LangChain Advanced

C

cost-reportruvnet

89

Generate a cost report showing token usage and USD costs by agent and model

A

agent-modePhyAgentOS

88

Unified tool for managing agent LLM modes (add, remove, update, list, switch).

F

frontend-api-contractsOpenHands

87

This skill should be used when the user asks to "add an API call", "change a backend", "update settings persistence", "change conversation events", "fix backend auth", "add Agent Server support", or changes src/api, backend registry, Cloud/runtime transport, settings, secrets, compatibility, or conversation resume behavior.

A

audit-agentsdzhng

87

Audit or rewrite AGENTS.md so it holds only lasting principles. Run it only when the user asks for it by name; never invoke it on your own.

A

agent-delegationQwenLM

86

Reference for briefing a subagent or a fork — what to put in the prompt, what not to delegate, and a worked example. Load before writing a delegation prompt; the Agent tool's own description carries the launch rules and the background-agent rules.

D

datachain-coredatachain-ai

85

Use ONLY for abstract DataChain SDK questions — API usage, method signatures, or code patterns — when no specific dataset or bucket is referenced. If the request mentions creating, saving, listing, exploring datasets or buckets, use datachain-knowledge instead.