Model Context Protocol server for GraphQL schemas
Model Context Protocol server for GraphQL schemas. Exposed over MCP by the mcp graphql schema mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.
A Model Context Protocol (MCP) server that exposes GraphQL schema information to Large Language Models (LLMs) like Claude. This server allows an LLM to explore and understand GraphQL schemas through a set of specialized tools.
The server ships on npm as mcp-graphql-schema, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.
Everything the assistant can do here goes through one of these:
list-query-fields — Lists all available root-level fields for GraphQL queriesget-query-field — Gets detailed definition for a specific query field in SDL formatlist-mutation-fields — Lists all available root-level fields for GraphQL mutationsget-mutation-field — Gets detailed definition for a specific mutation field in SDL formatlist-subscription-fields — Lists all available root-level fields for GraphQL subscriptions (if present in schema)get-subscription-field — Gets detailed definition for a specific subscription field (if present in schema)list-types — Lists all types defined in the GraphQL schema (excluding internal types)get-type — Gets detailed definition for a specific GraphQL type in SDL formatget-type-fields — Gets a simplified list of fields with their types for a specific GraphQL object typesearch-schema — Searches for types or fields in the schema by name pattern (case-insensitive regex)This sits in the payments and commerce group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. MCP Graphql Schema's toolset — list-query-fields, get-query-field, list-mutation-fields and 7 more — is a fair guide to whether it matches your workflow. It is maintained by hannesj; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| list-query-fields | Lists all available root-level fields for GraphQL queries |
| get-query-field | Gets detailed definition for a specific query field in SDL format |
| list-mutation-fields | Lists all available root-level fields for GraphQL mutations |
| get-mutation-field | Gets detailed definition for a specific mutation field in SDL format |
| list-subscription-fields | Lists all available root-level fields for GraphQL subscriptions (if present in schema) |
| get-subscription-field | Gets detailed definition for a specific subscription field (if present in schema) |
| list-types | Lists all types defined in the GraphQL schema (excluding internal types) |
| get-type | Gets detailed definition for a specific GraphQL type in SDL format |
| get-type-fields | Gets a simplified list of fields with their types for a specific GraphQL object type |
| search-schema | Searches for types or fields in the schema by name pattern (case-insensitive regex) |
{
"mcpServers": {
"graphql-schema": {
"command": "npx",
"args": ["-y", "mcp-graphql-schema"]
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
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