Apollo GraphQL MCP

Apollo GraphQL MCP is Apollo's Model Context Protocol server for GraphQL APIs. Instead of hand-writing a bespoke tool for every backend call, it turns GraphQL operations into MCP tools an agent can invoke. You point the server at a schema and a set of operation files, or at a persisted query manifest published to Apollo GraphOS, and each operation becomes a named tool whose input signature is derived from the operation's variables and whose output is the GraphQL response. The operations you choose to expose define the blast radius, so teams control exactly which reads and writes an agent can reach. It also ships introspection-oriented tools for cases where the operation set is not known in advance. An agent can search the schema for relevant types and fields, retrieve the definitions it needs, then compose and execute an operation against the graph. That path suits exploration and prototyping, while the curated operation path suits production, where predictable, reviewed queries matter more than open-ended access. The server sits in front of an Apollo Router supergraph or another GraphQL endpoint, forwards client headers so existing authentication and authorization rules still apply, and supports both local stdio and remote HTTP transports. It is aimed at platform and API teams who already run a federated graph and want agents to consume it through the same contract, governance, and observability as their other clients.