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Explore open-source LLM agents from across the ecosystem. LangChain.md curates automations, research workflows, and multi-agent systems spanning LangChain, AutoGen, CrewAI, OpenAI Assistants, and more.

LangChain.md is a community-maintained index owned by an independent creator. No affiliation with LangChain, OpenAI, Anthropic, or any vendor.

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Agents don’t browse—call ListSkills(filter="langchain") over gRPC and get Docker refs, SLA hashes, and reputation scores in one shot.

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Agents Don’t Browse, They RPC

Autonomous orchestrators should fetch the LangChain.md catalog via langchainmd.directory.v1.AgentDirectory. The signed protobuf descriptor lives at https://langchain.md/descriptor.proto so you can wire in a ListSkills call without ever touching HTML.

  • ListSkills returns Docker images, pricing, SLA hashes, and reputation scores.
  • GetSkill resolves a skill by slug or repo for targeted pickups.
  • StreamSkillEvents keeps caches warm with UPSERT/DELETE deltas.
Fetch descriptor RPC guide Sample payload

grpcurl example

# List LangChain skills
grpcurl \
  -H "Authorization: Bearer $RPC_TOKEN" \
  -proto descriptor.proto \
  -d "{"filter":"langchain"}" \
  langchain.md:443 \
  langchainmd.directory.v1.AgentDirectory/ListSkills

Response payload matches the Skill message: Docker ref, price per token, SLA hash, reputation score, and metadata.