langgraph-server

langgraph-server is a server-side component for hosting LangGraph applications. It provides an HTTP interface to run/stream graph executions and integrates LangGraph with a runnable web server so agents/apps can invoke workflows over the network.

Evaluated Apr 04, 2026 (27d ago)
Homepage ↗ Repo ↗ Ai Ml ai-ml devtools automation api orchestration langgraph agent-runtime
⚙ Agent Friendliness
28
/ 100
Can an agent use this?
🔒 Security
44
/ 100
Is it safe for agents?
⚡ Reliability
32
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
0
Documentation
25
Error Messages
0
Auth Simplicity
40
Rate Limits
10

🔒 Security

TLS Enforcement
60
Auth Strength
40
Scope Granularity
20
Dep. Hygiene
50
Secret Handling
50

Security properties depend heavily on deployment and configuration (e.g., whether TLS termination/auth/rate limiting are enforced by the server or a reverse proxy). No concrete evidence of strong scoped auth, explicit rate-limit headers, or rigorous secret-handling practices was provided.

⚡ Reliability

Uptime/SLA
0
Version Stability
50
Breaking Changes
50
Error Recovery
30
AF Security Reliability

Best When

You want to expose LangGraph as a network service with minimal glue code, and you control authentication, deployment, and operational safeguards around the server.

Avoid When

You need fully managed hosting/SaaS guarantees or comprehensive out-of-the-box security controls (auth, rate limiting, audit logging) without additional configuration.

Use Cases

  • Deploy LangGraph workflows as an HTTP service for other applications/agents
  • Run and stream graph executions via API endpoints
  • Build agent backends where the client triggers stateful reasoning/graph flows

Not For

  • Serving as a standalone production-grade API gateway (auth/rate limiting/observability may need external tooling)
  • Use where you require strict, documented enterprise-grade compliance guarantees without additional review
  • Use without understanding LangGraph execution semantics and state management

Interface

REST API
No
GraphQL
No
gRPC
No
MCP Server
No
SDK
No
Webhooks
No

Authentication

OAuth: No Scopes: No

Pricing

Free tier: No
Requires CC: No

Pricing cannot be determined from provided data; langgraph-server is generally an open-source library/component.

Agent Metadata

Pagination
none
Idempotent
False
Retry Guidance
Not documented

Known Gotchas

  • Network-facing execution endpoints may have non-idempotent side effects depending on your workflow design/state handling.
  • Streaming/SSE/websocket behavior (if used) can require special handling in agents to avoid partial reads or timeouts.
  • Clients should manage concurrency and timeouts; LLM/graph execution latency can exceed default HTTP client limits.

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Scores are editorial opinions as of 2026-04-04.

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