_load_api_chain() — langchain Function Reference

Architecture documentation for the _load_api_chain() function in loading.py from the langchain codebase.

Function python AgentOrchestration ClassicChains calls 2

Entity Profile

AgentOrchestration→ ClassicChains→ _load_api_chain() — langchain Function Reference

Dependency Diagram

graph TD
  baec4dc6_c098_0906_f5a2_599bba168193["_load_api_chain()"]
  61dd5a0b_3bf7_b973_6dac_edfd465b21fb["loading.py"]
  baec4dc6_c098_0906_f5a2_599bba168193 -->|defined in| 61dd5a0b_3bf7_b973_6dac_edfd465b21fb
  7c915b91_f326_1908_9969_d0cb1f4f7e34["load_chain_from_config()"]
  baec4dc6_c098_0906_f5a2_599bba168193 -->|calls| 7c915b91_f326_1908_9969_d0cb1f4f7e34
  ab90e794_4e78_646b_dee9_e87a00250d94["load_chain()"]
  baec4dc6_c098_0906_f5a2_599bba168193 -->|calls| ab90e794_4e78_646b_dee9_e87a00250d94
  style baec4dc6_c098_0906_f5a2_599bba168193 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/chains/loading.py lines 594–621

def _load_api_chain(config: dict, **kwargs: Any) -> APIChain:
    if "api_request_chain" in config:
        api_request_chain_config = config.pop("api_request_chain")
        api_request_chain = load_chain_from_config(api_request_chain_config, **kwargs)
    elif "api_request_chain_path" in config:
        api_request_chain = load_chain(config.pop("api_request_chain_path"))
    else:
        msg = "One of `api_request_chain` or `api_request_chain_path` must be present."
        raise ValueError(msg)
    if "api_answer_chain" in config:
        api_answer_chain_config = config.pop("api_answer_chain")
        api_answer_chain = load_chain_from_config(api_answer_chain_config, **kwargs)
    elif "api_answer_chain_path" in config:
        api_answer_chain = load_chain(config.pop("api_answer_chain_path"), **kwargs)
    else:
        msg = "One of `api_answer_chain` or `api_answer_chain_path` must be present."
        raise ValueError(msg)
    if "requests_wrapper" in kwargs:
        requests_wrapper = kwargs.pop("requests_wrapper")
    else:
        msg = "`requests_wrapper` must be present."
        raise ValueError(msg)
    return APIChain(
        api_request_chain=api_request_chain,
        api_answer_chain=api_answer_chain,
        requests_wrapper=requests_wrapper,
        **config,
    )