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Provider, API, MCP, framework and protocol are different entities. These original source-linked notes are separate from the imported index and its counters; selection is editorial, not a performance ranking.

EDITORIAL · FRAMEWORK DOCUMENTATION · Agent frameworks

LangChain

LangChain documents a framework for composing models, tools and agent behaviour. It is a software framework, not a universal hosted API endpoint.

Official documentation ↗

Documentation reviewed 2026-10-28. No provider operation tested.

All editorial references and Datoka examples →

This count is registry listings, not unique companies or services tested by Datoka. One provider may have several integrations or endpoints.

72 indexed listings for “LangChain” · Reset filters
Use case: automation
Protocols: MCP
Pricing: Price not supplied by publisher

Run a prompt through a LangChain (system + human) chain over Gemini on Vertex AI; optional LangSmith

Listing info 65/100
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Use case: development · automation
Protocols: A2A
Pricing: Price not supplied by publisher

LLM Observability & Orchestration Agent: composes langchain-core + langsmith + openai — orchestration, observability, llm-client via A2A + MCP.

Listing info 50/100

Metadata needs editorial review. This listing is separate from the editorial selection; no service failure is inferred.

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Use case: automation · productivity
Protocols: A2A
Pricing: Price not supplied by publisher

Structured Output Agent: composes groq + instructor + langchain-community + opentelemetry-sdk — llm-client, structured-output, orchestration, …

Listing info 50/100

Metadata needs editorial review. This listing is separate from the editorial selection; no service failure is inferred.

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Use case: development · automation
Protocols: A2A
Pricing: Price not supplied by publisher

LLM Orchestration Agent (Langgraph): composes langchain-core + langgraph + mcp + openai — orchestration, agent-protocol, llm-client via A2A + …

Listing info 50/100

Metadata needs editorial review. This listing is separate from the editorial selection; no service failure is inferred.

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Use case: finance · automation
Protocols: A2A
Pricing: Price not supplied by publisher

Authenticated MCP Agent: composes bcrypt + langchain-core + mcp + opentelemetry-sdk + python-jose — crypto, orchestration, agent-protocol, obs…

Listing info 50/100

Metadata needs editorial review. This listing is separate from the editorial selection; no service failure is inferred.

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Use case: finance · automation
Protocols: A2A
Pricing: Price not supplied by publisher

Authenticated LLM Agent: composes bcrypt + langchain-openai + mcp + openai + python-jose — crypto, orchestration, agent-protocol, llm-client, …

Listing info 50/100

Metadata needs editorial review. This listing is separate from the editorial selection; no service failure is inferred.

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Use case: finance · development
Protocols: A2A
Pricing: Price not supplied by publisher

Auth Token MCP Service: composes bcrypt + langchain + mcp + opentelemetry-instrumentation-fastapi + python-jose — crypto, orchestration, agent…

Listing info 50/100

Metadata needs editorial review. This listing is separate from the editorial selection; no service failure is inferred.

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Use case: finance · development
Protocols: A2A
Pricing: Price not supplied by publisher

LLM Orchestration Agent (Cryptography): composes cryptography + langchain-core + mcp + opentelemetry-sdk + python-jose — crypto, orchestration…

Listing info 50/100

Metadata needs editorial review. This listing is separate from the editorial selection; no service failure is inferred.

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Use case: finance · development
Protocols: A2A
Pricing: Price not supplied by publisher

LLM Orchestration Agent (Mcp): composes cryptography + langchain-openai + mcp + openai + opentelemetry-sdk — crypto, orchestration, agent-prot…

Listing info 50/100

Metadata needs editorial review. This listing is separate from the editorial selection; no service failure is inferred.

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Use case: finance · development
Protocols: A2A
Pricing: Price not supplied by publisher

LLM Orchestration JWT Agent: composes cryptography + langchain-core + mcp + opentelemetry-api + python-jose — crypto, orchestration, agent-pro…

Listing info 50/100

Metadata needs editorial review. This listing is separate from the editorial selection; no service failure is inferred.

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Use case: other
Protocols: APIx402
Pricing: 0.216 USDC / call (eip155:8453)

Analyze AI agent execution traces (LangChain/CrewAI/AutoGen). Identifies failure points, root causes, token waste, and suggests fixes.

Listing info 80/100
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Use case: finance · automation
Protocols: A2A
Pricing: Price not supplied by publisher

Authenticated LLM Agent (Bcrypt): composes bcrypt + langchain-openai + mcp + openai + opentelemetry-sdk — crypto, orchestration, agent-protoco…

Listing info 50/100

Metadata needs editorial review. This listing is separate from the editorial selection; no service failure is inferred.

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Indexed listings, not certifications. Completeness is not proof of working service. Prices and protocols are publisher declarations. How the index works