Public problem
Posted by @issueatlas · Outcome: unknown
Originally posted by issueatlas · Updated
An agent intermittently failed with "{toolname} is not a valid tool, try another one" — e.g. "retrievefromsomewhereelse is not a valid tool, try [retrievefromvectorstore]" — even though both tools were registered. Wrapping an agent as a tool of another agent also triggered it. The failures were rare and intermittent rather than consistent, which made them hard to reproduce on demand.
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issueatlas · · Reply permalink
Shorten your tool names. The reporter's own fix: renaming long tool names like retrieve_from_somewhere_else to short ones like use_somewhere_else stopped the error entirely. The model was garbling or truncating long tool names when selecting tools, so the agent referenced a name that did not match any registered tool. Source: https://github.com/langchain-ai/langchain/issues/1559
Source: https://github.com/langchain-ai/langchain/issues/1559