solidworks_mcp.tools.docs_discovery

solidworks_mcp.tools.docs_discovery

Docs discovery tool for SolidWorks COM and VBA command indexing.

This module provides functionality to discover and catalog all available COM objects, methods, and properties for the installed SolidWorks version, as well as VBA library references. Useful for building context for MCP server operations and enabling intelligent tool selection.

Attributes

CompatInputT module-attribute

CompatInputT = TypeVar('CompatInputT', bound=CompatInput)

HAS_WIN32COM module-attribute

HAS_WIN32COM = True

_KNOWN_SW_INTERFACES module-attribute

_KNOWN_SW_INTERFACES: dict[str, dict[str, list[str]]] = {'ISldWorks': {'methods': ['OpenDoc6', 'CloseDoc', 'ActivateDoc3', 'GetActiveObject', 'GetFirstDocument', 'GetDocumentCount', 'NewDocument', 'SendMsgToUser2', 'GetProcessID', 'ExitApp', 'RevisionNumber', 'GetUserTypeLibraryFile', 'CreateNewDocument'], 'properties': ['Visible', 'ActiveDoc', 'FrameState']}, 'IModelDoc2': {'methods': ['ShowNamedView2', 'ViewZoomToFit2', 'SaveBitmapWithVariableSize', 'SaveAs3', 'GetTitle', 'GetPathName', 'GetType', 'GetFeatureCount', 'GetActiveConfiguration', 'Extension', 'SketchManager', 'FeatureManager', 'SelectionManager', 'GetMassProperties', 'Close', 'SetSaveAsFileName', 'ResolveAllLightweightComponents', 'InsertSketch2', 'SketchAddConstraints', 'ClearSelection2'], 'properties': ['ActiveView', 'ActiveLayer']}, 'IPartDoc': {'methods': ['CreateFeatureFromSketch2', 'AddMateReference', 'GetBodies2', 'GetEntityByName', 'InsertSmartComponents', 'Material'], 'properties': []}, 'IAssemblyDoc': {'methods': ['AddComponent4', 'AddComponent5', 'InsertNewPart3', 'LayoutToAssembly', 'ResolveAllLightweightComponents', 'AddMate5', 'GetComponents', 'GetComponentCount'], 'properties': []}, 'IDrawingDoc': {'methods': ['CreateDrawViewFromModelView3', 'InsertModelAnnotations3', 'GenerateViewPalette', 'Get3DDrawingView'], 'properties': []}, 'IFeatureManager': {'methods': ['FeatureExtrusion3', 'FeatureCut3', 'FeatureRevolve2', 'InsertProtrusionBlend4', 'InsertShell', 'InsertFillet3', 'InsertChamfer', 'InsertDraftXpert3', 'FeatureMirror3', 'FeatureCircularPattern2', 'FeatureLinearPattern3', 'InsertBoss', 'FeatureSweep5', 'FeatureLoft3'], 'properties': []}, 'ISketchManager': {'methods': ['InsertSketch', 'CreateLine', 'CreateArc', 'CreateCircle', 'CreateRectangle', 'CreateEllipse', 'CreateSpline', 'CreateCenterLine', 'SketchMirror', 'SketchOffset', 'AddToDB', 'InsertSketch2'], 'properties': ['ActiveSketch']}, 'IModelView': {'methods': ['SaveBitmapWithVariableSize', 'ZoomToFit', 'ZoomToSheet', 'OrientView', 'SetCameraParameters'], 'properties': ['Orientation3', 'Translation3']}, 'IExtensionManager': {'methods': ['SaveAs2', 'SelectByID2', 'MultiSelect2'], 'properties': []}, 'IFeature': {'methods': ['GetNextFeature', 'GetName', 'GetTypeName2', 'SetSuppression2', 'IsSuppressed2', 'GetDefinition'], 'properties': ['Name']}, 'IBody2': {'methods': ['GetFaceCount', 'GetEdgeCount', 'GetVertexCount', 'GetMassProperties', 'GetType'], 'properties': []}, 'ISketchSegment': {'methods': ['GetStartPoint2', 'GetEndPoint2', 'GetType', 'SetEndPoint'], 'properties': []}}

Classes

CompatInput

Bases: BaseModel

Base schema allowing legacy/extra fields used by existing tests.

Attributes:

Name	Type	Description
model_config	Any	The model config value.

DiscoverDocsInput

Bases: CompatInput

Input schema for docs discovery.

Attributes:

Name	Type	Description
include_vba	bool	The include vba value.
output_dir	str | None	The output dir value.
year	int | None	The year value.

SearchApiHelpInput

Bases: CompatInput

Input schema for SolidWorks API help search.

Attributes:

Name	Type	Description
auto_discover_if_missing	bool	The auto discover if missing value.
index_file	str | None	The index file value.
max_results	int	The max results value.
query	str	The query value.
year	int | None	The year value.

SolidWorksDocsDiscovery

SolidWorksDocsDiscovery(output_dir: Path | None = None)

Discover and index SolidWorks COM and VBA documentation.

Parameters:

Name	Type	Description	Default
output_dir	Path | None	The output dir value. Defaults to None.	None

Attributes:

Name	Type	Description
output_dir	Any	The output dir value.
sw_app	Any	The sw app value.

Initialize docs discovery.

Parameters:

Name	Type	Description	Default
output_dir	Path | None	The output dir value. Defaults to None.	None

Source code in src/solidworks_mcp/tools/docs_discovery.py

def __init__(self, output_dir: Path | None = None):
    """Initialize docs discovery.

    Args:
        output_dir (Path | None): The output dir value. Defaults to None.
    """
    self.output_dir = output_dir or Path(".generated/docs-index")
    self.output_dir.mkdir(parents=True, exist_ok=True)
    self.sw_app: Any = None
    self.index: dict[str, Any] = {
        "version": "1.0",
        "solidworks_version": None,
        "com_objects": {},
        "vba_references": {},
        "total_methods": 0,
        "total_properties": 0,
    }

Functions

connect_to_solidworks

connect_to_solidworks() -> bool

Connect to running SolidWorks instance.

Returns:

Name	Type	Description
bool	bool	True if connect to solidworks, otherwise False.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def connect_to_solidworks(self) -> bool:
    """Connect to running SolidWorks instance.

    Returns:
        bool: True if connect to solidworks, otherwise False.
    """
    if not HAS_WIN32COM:
        logger.error("win32com not available; cannot index COM")
        return False

    if platform.system() != "Windows":
        logger.error("COM discovery only available on Windows")
        return False

    try:
        # Prefer GetActiveObject so we attach to a running SolidWorks session.
        # EnsureDispatch is used (instead of Dispatch) so that the type library
        # is loaded and pythoncom ITypeInfo enumeration works correctly.
        try:
            self.sw_app = win32com.client.GetActiveObject("SldWorks.Application")
        except com_error:
            logger.warning(
                "SolidWorks not running; attempting to create new instance"
            )
            self.sw_app = win32com.client.gencache.EnsureDispatch(
                "SldWorks.Application"
            )
        return True
    except com_error as e:
        logger.error(f"Failed to connect to SolidWorks: {e}")
        return False

create_search_summary

create_search_summary() -> dict[str, Any]

Create a summary of indexed documentation for search/reference.

Returns:

Type	Description
dict[str, Any]	dict[str, Any]: A dictionary containing the resulting values.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def create_search_summary(self) -> dict[str, Any]:
    """Create a summary of indexed documentation for search/reference.

    Returns:
        dict[str, Any]: A dictionary containing the resulting values.
    """
    summary = {
        "total_com_objects": len(self.index["com_objects"]),
        "total_methods": self.index["total_methods"],
        "total_properties": self.index["total_properties"],
        "solidworks_version": self.index["solidworks_version"],
        "available_vba_libs": [
            lib
            for lib, info in self.index["vba_references"].items()
            if info.get("status") == "available"
        ],
    }
    return summary

discover_all

discover_all() -> dict[str, Any]

Run full discovery of COM and VBA documentation.

Returns:

Type	Description
dict[str, Any]	dict[str, Any]: A dictionary containing the resulting values.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def discover_all(self) -> dict[str, Any]:
    """Run full discovery of COM and VBA documentation.

    Returns:
        dict[str, Any]: A dictionary containing the resulting values.
    """
    if not self.connect_to_solidworks():
        logger.error("Cannot proceed with discovery without SolidWorks connection")
        return self.index

    logger.info("Discovering COM objects...")
    self.index["com_objects"] = self.discover_com_objects()

    logger.info("Discovering VBA references...")
    self.index["vba_references"] = self.discover_vba_references()

    return self.index

discover_com_objects

discover_com_objects() -> dict[str, Any]

Discover all COM objects and their methods/properties.

Uses ITypeInfo enumeration via pythoncom for ISldWorks, then supplements with the active document's interface if a model is open. Falls back to the known-interface catalogue when typelib introspection is unavailable.

Returns:

Type	Description
dict[str, Any]	dict[str, Any]: A dictionary containing the resulting values.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def discover_com_objects(self) -> dict[str, Any]:
    """Discover all COM objects and their methods/properties.

    Uses ITypeInfo enumeration via pythoncom for ISldWorks, then supplements with the active
    document's interface if a model is open. Falls back to the known-interface catalogue
    when typelib introspection is unavailable.

    Returns:
        dict[str, Any]: A dictionary containing the resulting values.
    """
    if not self.sw_app:
        logger.error("Not connected to SolidWorks")
        return {}

    com_index: dict[str, Any] = {}
    total_m = 0
    total_p = 0

    # ------------------------------------------------------------------ #
    # Primary: ITypeInfo enumeration for ISldWorks
    # ------------------------------------------------------------------ #
    if HAS_WIN32COM:
        try:
            result = _discover_com_via_typeinfo(self.sw_app)
            # _discover_com_via_typeinfo returns (dict, total_m, total_p)
            partial_index, t_m, t_p = result
            com_index.update(partial_index)
            total_m += t_m
            total_p += t_p
            if partial_index:
                logger.info(
                    "[docs_discovery] ITypeInfo: {} ISldWorks methods, {} properties",
                    t_m,
                    t_p,
                )
        except Exception as exc:
            logger.debug("[docs_discovery] ITypeInfo path failed: {}", exc)

    # ------------------------------------------------------------------ #
    # Supplement: active document (IModelDoc2) if a model is open
    # ------------------------------------------------------------------ #
    try:
        active_doc = self.sw_app.ActiveDoc
        if active_doc is not None and HAS_WIN32COM:
            doc_typeinfo = active_doc._oleobj_.GetTypeInfo()
            doc_methods, doc_props = _enumerate_typeinfo_members(doc_typeinfo)
            if doc_methods or doc_props:
                com_index["IModelDoc2_active"] = {
                    "methods": doc_methods,
                    "properties": doc_props,
                    "method_count": len(doc_methods),
                    "property_count": len(doc_props),
                }
                total_m += len(doc_methods)
                total_p += len(doc_props)
                logger.info(
                    "[docs_discovery] Active doc typeinfo: {} methods, {} properties",
                    len(doc_methods),
                    len(doc_props),
                )
    except Exception:
        pass

    # ------------------------------------------------------------------ #
    # Fallback: merge known-interface catalogue for any gaps
    # ------------------------------------------------------------------ #
    for iface_name, members in _KNOWN_SW_INTERFACES.items():
        if iface_name in com_index:
            continue  # already populated via typeinfo
        com_index[iface_name] = {
            "methods": members["methods"],
            "properties": members["properties"],
            "method_count": len(members["methods"]),
            "property_count": len(members["properties"]),
        }
        total_m += len(members["methods"])
        total_p += len(members["properties"])

    try:
        self.index["total_methods"] += total_m
        self.index["total_properties"] += total_p
    except TypeError:
        pass  # accumulator corrupted (e.g. set to a string by tests); tolerate

    # Get SolidWorks version
    try:
        self.index["solidworks_version"] = self.sw_app.RevisionNumber()
    except Exception:
        pass

    return com_index

discover_vba_references

discover_vba_references() -> dict[str, Any]

Discover VBA/TypeLib references via the Windows Registry.

Scans HKEY_CLASSES_ROOT\TypeLib for SolidWorks and common Office/VBA type libraries.

Returns:

Type	Description
dict[str, Any]	dict[str, Any]: A dictionary containing the resulting values.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def discover_vba_references(self) -> dict[str, Any]:
    """Discover VBA/TypeLib references via the Windows Registry.

    Scans HKEY_CLASSES_ROOT\\TypeLib for SolidWorks and common Office/VBA type libraries.

    Returns:
        dict[str, Any]: A dictionary containing the resulting values.
    """
    refs = _discover_vba_references_via_registry()
    if refs:
        logger.info(
            "[docs_discovery] Registry TypeLib scan found {} entries", len(refs)
        )
    else:
        logger.debug(
            "[docs_discovery] Registry TypeLib scan found no matching entries"
        )
    return refs

save_index

save_index(filename: str = 'solidworks_docs_index.json') -> Path | None

Save discovered documentation to JSON file.

Parameters:

Name	Type	Description	Default
filename	str	The filename value. Defaults to "solidworks_docs_index.json".	'solidworks_docs_index.json'

Returns:

Type	Description
Path | None	Path | None: The result produced by the operation.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def save_index(self, filename: str = "solidworks_docs_index.json") -> Path | None:
    """Save discovered documentation to JSON file.

    Args:
        filename (str): The filename value. Defaults to "solidworks_docs_index.json".

    Returns:
        Path | None: The result produced by the operation.
    """
    try:
        output_path = self.output_dir / filename
        with open(output_path, "w", encoding="utf-8") as f:
            json.dump(self.index, f, indent=2)
        logger.info(f"Docs index saved to {output_path}")
        return output_path
    except Exception as e:
        logger.error(f"Failed to save docs index: {e}")
        return None

Functions

_detect_installed_solidworks_year

_detect_installed_solidworks_year() -> int | None

Detect the latest installed SolidWorks year from the public samples path.

Returns:

Type	Description
int | None	int | None: The result produced by the operation.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def _detect_installed_solidworks_year() -> int | None:
    """Detect the latest installed SolidWorks year from the public samples path.

    Returns:
        int | None: The result produced by the operation.
    """
    root = Path(r"C:\Users\Public\Documents\SOLIDWORKS")
    if not root.exists():
        return None

    years: list[int] = []
    try:
        for child in root.iterdir():
            if not child.is_dir():
                continue
            year = _extract_year(child.name)
            if year is not None:
                years.append(year)
    except OSError:
        # Path can be inaccessible or missing on CI runners and non-Windows hosts.
        return None

    if not years:
        return None
    return max(years)

_discover_com_via_typeinfo

_discover_com_via_typeinfo(sw_app: Any) -> tuple[dict[str, Any], int, int]

Enumerate ISldWorks methods/properties via ITypeInfo.

Returns a COM index dict keyed by interface name, with the same shape as the rest of the index (methods, properties, method_count, property_count).

Parameters:

Name	Type	Description	Default
sw_app	Any	The sw app value.	required

Returns:

Type	Description
tuple[dict[str, Any], int, int]	tuple[dict[str, Any], int, int]: com_index, total_methods, total_properties.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def _discover_com_via_typeinfo(sw_app: Any) -> tuple[dict[str, Any], int, int]:
    """Enumerate ISldWorks methods/properties via ITypeInfo.

    Returns a COM index dict keyed by interface name, with the same shape as the rest of the
    index (``methods``, ``properties``, ``method_count``, ``property_count``).

    Args:
        sw_app (Any): The sw app value.

    Returns:
        tuple[dict[str, Any], int, int]: com_index, total_methods, total_properties.
    """
    if not HAS_WIN32COM:
        return {}

    com_index: dict[str, Any] = {}
    total_methods = 0
    total_properties = 0

    try:
        # GetTypeInfo returns ITypeInfo for the IDispatch interface of the object.
        typeinfo = sw_app._oleobj_.GetTypeInfo()
        methods, properties = _enumerate_typeinfo_members(typeinfo)

        # Walk implemented interfaces to catch inherited members.
        try:
            typeattr = typeinfo.GetTypeAttr()
            for impl_idx in range(typeattr.cImplTypes):
                try:
                    ref_type = typeinfo.GetRefTypeOfImplType(impl_idx)
                    ref_typeinfo = typeinfo.GetRefTypeInfo(ref_type)
                    extra_m, extra_p = _enumerate_typeinfo_members(ref_typeinfo)
                    for m in extra_m:
                        if m not in methods:
                            methods.append(m)
                    for p in extra_p:
                        if p not in properties:
                            properties.append(p)
                except Exception:
                    continue
        except Exception:
            pass

        methods = sorted(set(methods))
        properties = sorted(set(properties))

        if methods or properties:
            com_index["ISldWorks"] = {
                "methods": methods,
                "properties": properties,
                "method_count": len(methods),
                "property_count": len(properties),
            }
            total_methods += len(methods)
            total_properties += len(properties)

    except Exception as exc:
        logger.debug(
            "[docs_discovery] ITypeInfo enumeration unavailable; using built-in interface catalog fallback: {}",
            exc,
        )

    return com_index, total_methods, total_properties

_discover_vba_references_via_registry

_discover_vba_references_via_registry() -> dict[str, Any]

Enumerate VBA/TypeLib references via the Windows Registry.

Scans HKEY_CLASSES_ROOT\TypeLib for entries whose name or GUID matches SolidWorks or common Office/VBA libraries.

Returns:

Type	Description
dict[str, Any]	dict[str, Any]: A dictionary containing the resulting values.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def _discover_vba_references_via_registry() -> dict[str, Any]:
    """Enumerate VBA/TypeLib references via the Windows Registry.

    Scans HKEY_CLASSES_ROOT\\TypeLib for entries whose name or GUID matches SolidWorks or
    common Office/VBA libraries.

    Returns:
        dict[str, Any]: A dictionary containing the resulting values.
    """
    vba_refs: dict[str, Any] = {}

    # Keywords to look for in type lib names
    interesting_keywords = [
        "solidworks",
        "sldworks",
        "vba",
        "visual basic",
        "stdole",
        "office",
        "microsoft office",
    ]

    if platform.system() != "Windows":
        return vba_refs

    try:
        import winreg

        typelib_key = winreg.OpenKey(
            winreg.HKEY_CLASSES_ROOT, "TypeLib", access=winreg.KEY_READ
        )
        idx = 0
        while True:
            try:
                guid = winreg.EnumKey(typelib_key, idx)
                idx += 1
            except OSError:
                break
            try:
                guid_key = winreg.OpenKey(typelib_key, guid, access=winreg.KEY_READ)
                ver_idx = 0
                while True:
                    try:
                        version = winreg.EnumKey(guid_key, ver_idx)
                        ver_idx += 1
                    except OSError:
                        break
                    try:
                        ver_key = winreg.OpenKey(
                            guid_key, version, access=winreg.KEY_READ
                        )
                        try:
                            name, _ = winreg.QueryValueEx(ver_key, "")
                        except OSError:
                            name = ""
                        winreg.CloseKey(ver_key)
                        if name and any(
                            kw in name.lower() for kw in interesting_keywords
                        ):
                            key = f"{name} ({guid} v{version})"
                            if key not in vba_refs:
                                vba_refs[key] = {
                                    "description": name,
                                    "guid": guid,
                                    "version": version,
                                    "status": "available",
                                }
                    except Exception:
                        continue
                winreg.CloseKey(guid_key)
            except Exception:
                continue
        winreg.CloseKey(typelib_key)
    except Exception as exc:
        logger.debug("[docs_discovery] Registry TypeLib scan failed: {}", exc)

    return vba_refs

_enumerate_typeinfo_members

_enumerate_typeinfo_members(typeinfo: Any) -> tuple[list[str], list[str]]

Enumerate methods and properties from a COM ITypeInfo object.

Uses raw ITypeInfo via pythoncom to walk the function table, which works reliably for both early-bound and late-bound COM objects.

Returns (methods, properties) as sorted de-duped lists.

Parameters:

Name	Type	Description	Default
typeinfo	Any	The typeinfo value.	required

Returns:

Type	Description
tuple[list[str], list[str]]	tuple[list[str], list[str]]: A tuple containing the resulting values.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def _enumerate_typeinfo_members(typeinfo: Any) -> tuple[list[str], list[str]]:
    """Enumerate methods and properties from a COM ITypeInfo object.

    Uses raw ITypeInfo via pythoncom to walk the function table, which works reliably for
    both early-bound and late-bound COM objects.

    Returns (methods, properties) as sorted de-duped lists.

    Args:
        typeinfo (Any): The typeinfo value.

    Returns:
        tuple[list[str], list[str]]: A tuple containing the resulting values.
    """
    methods: list[str] = []
    properties: list[str] = []
    seen: set[str] = set()

    try:
        typeattr = typeinfo.GetTypeAttr()
        for i in range(typeattr.cFuncs):
            try:
                funcdesc = typeinfo.GetFuncDesc(i)
                names = typeinfo.GetNames(funcdesc.memid)
                name = names[0] if names else None
                if not name or name.startswith("_"):
                    continue
                if name in seen:
                    continue
                seen.add(name)
                # invkind: 1=FUNC, 2=PROPERTYGET, 4=PROPERTYPUT, 8=PROPERTYPUTREF
                if funcdesc.invkind == 1:
                    methods.append(name)
                else:
                    properties.append(name)
            except Exception:
                continue
    except Exception:
        pass

    return sorted(methods), sorted(properties)

_extract_year

_extract_year(value: str | None) -> int | None

Extract a 4-digit year from any string.

Parameters:

Name	Type	Description	Default
value	str | None	The value value.	required

Returns:

Type	Description
int | None	int | None: The result produced by the operation.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def _extract_year(value: str | None) -> int | None:
    """Extract a 4-digit year from any string.

    Args:
        value (str | None): The value value.

    Returns:
        int | None: The result produced by the operation.
    """
    if not value:
        return None
    match = re.search(r"\b(20\d{2})\b", value)
    if not match:
        return None
    try:
        return int(match.group(1))
    except ValueError:
        return None

_fallback_help_for_query

_fallback_help_for_query(query: str) -> dict[str, Any]

Provide coherent fallback help when no docs index is available.

Parameters:

Name	Type	Description	Default
query	str	Query text used for the operation.	required

Returns:

Type	Description
dict[str, Any]	dict[str, Any]: A dictionary containing the resulting values.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def _fallback_help_for_query(query: str) -> dict[str, Any]:
    """Provide coherent fallback help when no docs index is available.

    Args:
        query (str): Query text used for the operation.

    Returns:
        dict[str, Any]: A dictionary containing the resulting values.
    """
    q = query.lower()

    if any(word in q for word in ("revolve", "lathe", "turned")):
        return {
            "suggested_tools": [
                "create_part",
                "create_sketch",
                "add_centerline",
                "add_line",
                "add_arc",
                "exit_sketch",
                "create_revolve",
            ],
            "next_steps": [
                "Create a profile sketch and a centerline in the same sketch.",
                "Exit sketch mode before create_revolve.",
                "If real COM returns parameter mismatch, use generate_vba_revolve as fallback guidance.",
            ],
        }

    if any(word in q for word in ("extrude", "boss", "cut")):
        return {
            "suggested_tools": [
                "create_part",
                "create_sketch",
                "add_rectangle",
                "add_circle",
                "exit_sketch",
                "create_extrusion",
            ],
            "next_steps": [
                "Ensure sketch profile is closed before create_extrusion.",
                "Use direction='cut' for removal operations.",
            ],
        }

    return {
        "suggested_tools": [
            "discover_solidworks_docs",
            "open_model",
            "get_file_properties",
            "save_as",
        ],
        "next_steps": [
            "Run discover_solidworks_docs to index the local COM API surface.",
            "Search again with a narrower API term like a method or interface name.",
        ],
    }

_find_index_file

_find_index_file(year: int | None, explicit_index_file: str | None) -> Path | None

Find the most appropriate index file for a requested year.

Parameters:

Name	Type	Description	Default
year	int | None	The year value.	required
explicit_index_file	str | None	The explicit index file value.	required

Returns:

Type	Description
Path | None	Path | None: The result produced by the operation.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def _find_index_file(year: int | None, explicit_index_file: str | None) -> Path | None:
    """Find the most appropriate index file for a requested year.

    Args:
        year (int | None): The year value.
        explicit_index_file (str | None): The explicit index file value.

    Returns:
        Path | None: The result produced by the operation.
    """
    if explicit_index_file:
        explicit = Path(explicit_index_file)
        if explicit.exists():
            return explicit

    names = ["solidworks_docs_index.json"]
    if year:
        names.insert(0, f"solidworks_docs_index_{year}.json")

    search_dirs = [
        Path(".generated/docs-index"),
        Path("tests/.generated/solidworks_integration/docs-index"),
        Path("tests/.generated/docs-index"),
    ]

    for directory in search_dirs:
        for name in names:
            candidate = directory / name
            if candidate.exists():
                return candidate

    return None

_load_index_file

_load_index_file(index_file: Path) -> dict[str, Any] | None

Load docs index JSON from disk.

Parameters:

Name	Type	Description	Default
index_file	Path	The index file value.	required

Returns:

Type	Description
dict[str, Any] | None	dict[str, Any] | None: A dictionary containing the resulting values.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def _load_index_file(index_file: Path) -> dict[str, Any] | None:
    """Load docs index JSON from disk.

    Args:
        index_file (Path): The index file value.

    Returns:
        dict[str, Any] | None: A dictionary containing the resulting values.
    """
    try:
        if not index_file.exists() or not index_file.is_file():
            return None
        with index_file.open("r", encoding="utf-8") as handle:
            data = json.load(handle)
        if isinstance(data, dict):
            return data
        return None
    except Exception:
        return None

_normalize_input

_normalize_input(input_data: Any, model_type: type[CompatInputT]) -> CompatInputT

Normalize dict/model payloads for direct tool invocation paths.

Parameters:

Name	Type	Description	Default
input_data	Any	The input data value.	required
model_type	type[CompatInputT]	The model type value.	required

Returns:

Name	Type	Description
CompatInputT	CompatInputT	The result produced by the operation.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def _normalize_input(input_data: Any, model_type: type[CompatInputT]) -> CompatInputT:
    """Normalize dict/model payloads for direct tool invocation paths.

    Args:
        input_data (Any): The input data value.
        model_type (type[CompatInputT]): The model type value.

    Returns:
        CompatInputT: The result produced by the operation.
    """
    if input_data is None:
        return model_type()
    if isinstance(input_data, model_type):
        return input_data
    if isinstance(input_data, dict):
        return model_type.model_validate(input_data)
    if hasattr(input_data, "model_dump"):
        return model_type.model_validate(input_data.model_dump())
    return model_type.model_validate(input_data)

_resolve_solidworks_year

_resolve_solidworks_year(requested_year: int | None, config: Any) -> int | None

Resolve SolidWorks year from explicit request, config, then local installation.

Parameters:

Name	Type	Description	Default
requested_year	int | None	The requested year value.	required
config	Any	Configuration values for the operation.	required

Returns:

Type	Description
int | None	int | None: The result produced by the operation.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def _resolve_solidworks_year(requested_year: int | None, config: Any) -> int | None:
    """Resolve SolidWorks year from explicit request, config, then local installation.

    Args:
        requested_year (int | None): The requested year value.
        config (Any): Configuration values for the operation.

    Returns:
        int | None: The result produced by the operation.
    """
    if requested_year:
        return requested_year

    config_year = getattr(config, "solidworks_year", None)
    if isinstance(config_year, int):
        return config_year

    config_path_year = _extract_year(getattr(config, "solidworks_path", None))
    if config_path_year:
        return config_path_year

    return _detect_installed_solidworks_year()

_search_index

_search_index(index: dict[str, Any], query: str, max_results: int) -> list[dict[str, Any]]

Search indexed COM objects/members for a query.

Parameters:

Name	Type	Description	Default
index	dict[str, Any]	The index value.	required
query	str	Query text used for the operation.	required
max_results	int	The max results value.	required

Returns:

Type	Description
list[dict[str, Any]]	list[dict[str, Any]]: A list containing the resulting items.

Source code in src/solidworks_mcp/tools/docs_discovery.py

def _search_index(
    index: dict[str, Any], query: str, max_results: int
) -> list[dict[str, Any]]:
    """Search indexed COM objects/members for a query.

    Args:
        index (dict[str, Any]): The index value.
        query (str): Query text used for the operation.
        max_results (int): The max results value.

    Returns:
        list[dict[str, Any]]: A list containing the resulting items.
    """
    tokens = [t for t in re.split(r"\s+", query.lower().strip()) if t]
    if not tokens:
        return []

    results: list[dict[str, Any]] = []

    def _score(text: str) -> int:
        """Build internal score.

        Args:
            text (str): Input text processed by the operation.

        Returns:
            int: The computed numeric result.
        """
        lower = text.lower()
        score = 0
        for token in tokens:
            if token == lower:
                score += 10
            elif token in lower:
                score += 3
        return score

    for obj_name, obj_data in index.get("com_objects", {}).items():
        obj_score = _score(obj_name)

        for method in obj_data.get("methods", []):
            score = obj_score + _score(str(method))
            if score > 0:
                results.append(
                    {
                        "object": obj_name,
                        "member": method,
                        "member_type": "method",
                        "score": score,
                    }
                )

        for prop in obj_data.get("properties", []):
            score = obj_score + _score(str(prop))
            if score > 0:
                results.append(
                    {
                        "object": obj_name,
                        "member": prop,
                        "member_type": "property",
                        "score": score,
                    }
                )

    for lib_name, lib_data in index.get("vba_references", {}).items():
        lib_text = f"{lib_name} {lib_data.get('description', '')}"
        score = _score(lib_text)
        if score > 0:
            results.append(
                {
                    "object": "VBA Library",
                    "member": lib_name,
                    "member_type": "reference",
                    "status": lib_data.get("status", "unknown"),
                    "score": score,
                }
            )

    results.sort(key=lambda item: item.get("score", 0), reverse=True)
    return results[:max_results]

register_docs_discovery_tools async

register_docs_discovery_tools(mcp: Any, adapter: Any, config: dict[str, Any]) -> int

Register docs discovery tool with FastMCP.

Parameters:

Name	Type	Description	Default
mcp	Any	The mcp value.	required
adapter	Any	Adapter instance used for the operation.	required
config	dict[str, Any]	Configuration values for the operation.	required

Returns:

Name	Type	Description
int	int	The computed numeric result.

Source code in src/solidworks_mcp/tools/docs_discovery.py

async def register_docs_discovery_tools(
    mcp: Any, adapter: Any, config: dict[str, Any]
) -> int:
    """Register docs discovery tool with FastMCP.

    Args:
        mcp (Any): The mcp value.
        adapter (Any): Adapter instance used for the operation.
        config (dict[str, Any]): Configuration values for the operation.

    Returns:
        int: The computed numeric result.
    """

    @mcp.tool()  # type: ignore[untyped-decorator]
    async def discover_solidworks_docs(
        input_data: DiscoverDocsInput | None = None,
    ) -> dict[str, Any]:
        """Discover and index SolidWorks COM and VBA documentation.

        Creates a searchable index of all available COM objects, methods, properties, and VBA
        libraries for the installed SolidWorks version. Useful for building context for
        intelligent MCP tool selection and documentation queries.

        Args:
            input_data (DiscoverDocsInput | None): The input data value. Defaults to None.

        Returns:
            dict[str, Any]: A dictionary containing the resulting values.

        Example:
                            ```python
                            result = await discover_solidworks_docs({
                                "output_dir": "docs-index",
                                "include_vba": True
                            })

                            if result["status"] == "success":
                                print(f"Discovered {result['summary']['total_methods']} COM methods")
                                print(f"Output saved to {result['output_file']}")
                            ```

                        Note:
                            - Requires Windows + SolidWorks installed and running
                            - Creates .generated/docs-index directory if not present
                            - Generates solidworks_docs_index.json with full catalog
                            - Index can be used to build context for RAG or tool discovery
        """
        import time

        start_time = time.time()

        if not HAS_WIN32COM:
            return {
                "status": "error",
                "message": "win32com not available; cannot discover COM documentation",
            }

        if platform.system() != "Windows":
            return {
                "status": "error",
                "message": "COM discovery only available on Windows",
            }

        try:
            normalized = _normalize_input(input_data, DiscoverDocsInput)
            output_dir = Path(normalized.output_dir) if normalized.output_dir else None
            year = _resolve_solidworks_year(normalized.year, config)

            discovery = SolidWorksDocsDiscovery(output_dir=output_dir)

            logger.info("Starting SolidWorks documentation discovery...")
            index = discovery.discover_all()

            filename = (
                f"solidworks_docs_index_{year}.json"
                if year
                else "solidworks_docs_index.json"
            )
            output_file = discovery.save_index(filename=filename)

            # Rebuild the FAISS RAG namespace so Gemma can query the API surface.
            rag_indexed = False
            if output_file is not None:
                try:
                    from solidworks_mcp.agents.vector_rag import (
                        build_solidworks_api_docs_index,
                    )

                    rag_idx = build_solidworks_api_docs_index(output_file)
                    rag_idx.save()
                    rag_indexed = True
                    logger.info(
                        "FAISS 'solidworks-api-docs' namespace rebuilt: %d chunks",
                        rag_idx.chunk_count,
                    )
                except ImportError:
                    logger.debug("faiss-cpu not installed; skipping RAG index rebuild")
                except Exception as _rag_exc:
                    logger.warning("RAG rebuild failed: {}", _rag_exc)

            summary = discovery.create_search_summary()

            return {
                "status": "success",
                "message": f"Discovered {summary['total_com_objects']} COM objects, "
                f"{summary['total_methods']} methods, "
                f"{summary['total_properties']} properties",
                "index": index,
                "summary": summary,
                "year": year,
                "output_file": str(output_file) if output_file else None,
                "rag_indexed": rag_indexed,
                "execution_time": time.time() - start_time,
            }

        except Exception as e:
            logger.error(f"Error during docs discovery: {e}")
            return {
                "status": "error",
                "message": f"Discovery failed: {str(e)}",
            }

    @mcp.tool()  # type: ignore[untyped-decorator]
    async def search_solidworks_api_help(
        input_data: SearchApiHelpInput | None = None,
    ) -> dict[str, Any]:
        """Search SolidWorks API help index and return coherent guidance.

        This tool helps when the LLM gets stuck by mapping user intent to discovered COM members
        and practical MCP workflow guidance.

        Args:
            input_data (SearchApiHelpInput | None): The input data value. Defaults to None.

        Returns:
            dict[str, Any]: A dictionary containing the resulting values.
        """

        import time

        start_time = time.time()

        try:
            normalized = _normalize_input(input_data, SearchApiHelpInput)
            year = _resolve_solidworks_year(normalized.year, config)

            index_file = _find_index_file(year, normalized.index_file)
            index = _load_index_file(index_file) if index_file else None

            if index is None and normalized.auto_discover_if_missing:
                if HAS_WIN32COM and platform.system() == "Windows":
                    discovery = SolidWorksDocsDiscovery()
                    index = discovery.discover_all()
                    filename = (
                        f"solidworks_docs_index_{year}.json"
                        if year
                        else "solidworks_docs_index.json"
                    )
                    index_file = discovery.save_index(filename=filename)

            matches = _search_index(
                index or {}, normalized.query, normalized.max_results
            )
            fallback = _fallback_help_for_query(normalized.query)

            guidance_lines = []
            if matches:
                guidance_lines.append(
                    f"Found {len(matches)} API matches for '{normalized.query}'."
                )
                guidance_lines.append(
                    "Start with the highest-score members and verify with the real adapter path."
                )
            else:
                guidance_lines.append(
                    "No indexed API hits found; using workflow fallback guidance."
                )
                guidance_lines.append(
                    "Consider running discover_solidworks_docs first for this machine/version."
                )

            return {
                "status": "success",
                "message": "SolidWorks API help search completed",
                "query": normalized.query,
                "year": year,
                "source_index_file": str(index_file) if index_file else None,
                "matches": matches,
                "fallback_help": fallback,
                "guidance": " ".join(guidance_lines),
                "execution_time": time.time() - start_time,
            }

        except Exception as e:
            logger.error(f"Error during SolidWorks API help search: {e}")
            return {
                "status": "error",
                "message": f"API help search failed: {str(e)}",
            }

    tool_count = 2  # discover_solidworks_docs, search_solidworks_api_help
    return tool_count