ToolMessage

Artifact of the Tool execution which is not meant to be sent to the model.

Should only be specified if it is different from the message content, e.g. if only a subset of the full tool output is being passed as message content but the full output is needed in other parts of the code.

Content block identifier, which can be either

• generated by the provider (e.g., a provider-specific ID)
• generated by LangChain upon creation (a uuid prefixed with 'lc-')

A path to the module that contains the class, eg. ["langchain", "llms"] Usually should be the same as the entrypoint the class is exported from.

Metadata for this call and any sub-calls (eg. a Chain calling an LLM). Keys should be strings, values should be JSON-serializable.

The name of the tool being called

Metadata about the message

The status of the server tool call

Type of the content block