Crate tools_core

Re-exports§

CallId
CollectionBuilder: Builder for ToolCollection with support for shared context injection. Construct via ToolCollection::builder().
DeserializationError: Specific deserialization errors
FunctionCall: Represents a function call with name and arguments
FunctionDecl: Function declaration for LLM consumption
FunctionResponse: Represents a function response with name and arguments
MetaValidationError: Per-tool attribute validation error. Reported by validate_tool_attrs and validate_tool_attrs_for.
NoMeta: Default metadata type for ToolCollection. Empty struct that deserializes from any JSON object, ignoring all fields. Use this when you don’t care about per-tool attributes.
Tool: Represents a tool that can be called
ToolCollection: Collection of registered tools, parameterized by a metadata type M.
ToolEntry: One entry in a ToolCollection: callable function, schema, and the metadata typed against the collection’s M parameter.
ToolMetadata: Metadata about a tool function
ToolRegistration: Tool registration for inventory collection. Constructed via struct literal in macro-generated code; field additions are minor-version breaking changes.
TypeSignature: Runtime type signature information

MetaArg: Helper trait that lets ToolCollection::register accept either a real M or () when M = NoMeta. Passing () to a typed collection fails at compile time — there’s no silent default.
ToolSchema: Trait for types that can generate a JSON Schema representation of themselves.

validate_tool_attrs: Validate every registered tool’s #[tool(...)] attributes against M, accumulating all failures. Use in CI tests to catch attribute typos before they hit collect_tools at runtime.
validate_tool_attrs_for: Like validate_tool_attrs but only checks the named subset. Useful for workspaces with multiple metadata schemas, each gating a different group of tools. Returns an error for any name that does not match a registered tool — typos in the test list are as bad as typos in the attributes.