MCP GraphQL

MCP server that lets LLMs dynamically discover and query any GraphQL API by introspecting its schema, executing queries, and optionally executing mutations against a configured endpoint.

Evaluated Mar 06, 2026 (0d ago) vlatest

Homepage ↗ Repo ↗ Developer Tools graphql api schema-introspection queries typescript developer-tools

⚙ Agent Friendliness

/ 100

Can an agent use this?

🔒 Security

/ 100

Is it safe for agents?

⚡ Reliability

/ 100

Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality

Documentation

Error Messages

Auth Simplicity

Rate Limits

🔒 Security

TLS Enforcement

Auth Strength

Scope Granularity

Dep. Hygiene

Secret Handling

GraphQL MCP server. Auth depends on GraphQL schema and resolvers. Introspection should be disabled in production. Query depth/complexity limits prevent DoS.

⚡ Reliability

Uptime/SLA

Version Stability

Breaking Changes

Error Recovery

Best When

You have a GraphQL endpoint and want an AI agent to self-discover what queries are possible and execute them without you writing the queries manually.

Avoid When

You need strict query control, cost/complexity limiting on GraphQL operations, or your API requires mTLS or complex multi-step auth flows not supported by a static HEADERS env var.

Use Cases

• Enabling an AI agent to explore and query an internal GraphQL API without hardcoded query definitions
• Prototyping GraphQL queries interactively through Claude for API development and testing
• Bridging AI workflows to GraphQL-backed services (e.g., Shopify, GitHub, Contentful)
• Schema exploration for developers onboarding to an unfamiliar GraphQL API

Not For

• REST-only APIs (no OpenAPI/REST support)
• Production environments needing fine-grained query whitelisting or cost controls
• Users who need mutations enabled by default (disabled for safety)

Interface

REST API

GraphQL

Yes

gRPC

MCP Server

Yes ↗

SDK

Webhooks

Authentication

Methods: api_key bearer_token custom_headers

OAuth: No Scopes: No

Auth is passed as a JSON string in the HEADERS environment variable (e.g., {"Authorization":"Bearer token"}). No OAuth flow support — static headers only. Suitable for API key and bearer token scenarios.

Pricing

Model: open_source

Free tier: Yes

Requires CC: No

Open source. Costs depend entirely on the GraphQL API being queried.

Agent Metadata

Pagination

none

Idempotent

Partial

Retry Guidance

Not documented

Known Gotchas

⚠ Mutations disabled by default via ALLOW_MUTATIONS flag — must explicitly enable for write operations
⚠ Schema introspection must be enabled on the target GraphQL server (some production APIs disable it)
⚠ Static HEADERS env var means no dynamic token refresh — tokens must be rotated manually
⚠ No query complexity or depth limiting — agents could generate expensive queries

Alternatives

mcp-rest-api mcp-link graphql-playground

Full Evaluation Report

Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for MCP GraphQL.

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Scores are editorial opinions as of 2026-03-06.