Optional
callbacksOptional
metadataMetadata for this call and any sub-calls (eg. a Chain calling an LLM). Keys should be strings, values should be JSON-serializable.
Optional
tagsTags for this call and any sub-calls (eg. a Chain calling an LLM). You can use these to filter calls.
Callbacks for this call and any sub-calls (eg. a Chain calling an LLM). Tags are passed to all callbacks, metadata is passed to handle*Start callbacks.