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The server implements schema discovery by either introspecting a live GraphQL endpoint using the GraphQL introspection query or reading a pre-cached local schema file, then serializes the complete type system (types, fields, arguments, directives) as a structured resource that LLM clients can reference in their context without re-fetching.","intents":["I need my LLM to understand the structure of a GraphQL API before writing queries","I want to expose a GraphQL schema to Claude/GPT without embedding it in every prompt","I need to cache a schema locally to avoid repeated introspection calls"],"best_for":["LLM application developers building agents that interact with GraphQL APIs","Teams integrating GraphQL backends with Claude/GPT via MCP","Developers wanting schema-aware code generation for GraphQL operations"],"limitations":["Schema is static at server startup — does not reflect real-time schema changes without server restart","Introspection queries may timeout on very large schemas (100+ types with deep nesting)","Local schema files must be manually kept in sync with actual endpoint schema"],"requires":["GraphQL endpoint accessible at ENDPOINT env var (default: http://localhost:4000/graphql) OR local schema file path via SCHEMA env var","MCP-compatible client (Claude Desktop, Cline, or other MCP host)","Node.js 16+ (TypeScript runtime)"],"input_types":["GraphQL endpoint URL (string)","Local GraphQL schema file (SDL or JSON introspection format)"],"output_types":["Structured GraphQL schema resource (JSON introspection format or SDL text)"],"categories":["tool-use-integration","memory-knowledge"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-blurrah-mcp-graphql__cap_1","uri":"capability://tool.use.integration.graphql.query.execution.with.variable.binding","name":"graphql query execution with variable binding","description":"Implements a query-graphql tool that accepts a GraphQL query string and optional variables object, then executes the query against a configured GraphQL endpoint using HTTP POST with proper header injection and response parsing. The tool validates query syntax before execution, binds variables to the query using GraphQL's variable substitution mechanism, and returns the full response (data + errors) to the LLM, enabling dynamic query construction and parameterized operations.","intents":["I want my LLM to fetch data from a GraphQL API by constructing and executing queries dynamically","I need to pass runtime parameters (filters, pagination, IDs) to GraphQL queries from the LLM","I want the LLM to execute read operations against a GraphQL backend and get structured results"],"best_for":["LLM agents that need to fetch data from GraphQL APIs as part of reasoning/planning loops","Developers building retrieval-augmented generation (RAG) systems backed by GraphQL","Teams using LLMs to query complex data models exposed via GraphQL"],"limitations":["Mutations are disabled by default (ALLOW_MUTATIONS=false) — requires explicit opt-in to prevent accidental data modification","No built-in query complexity analysis — LLMs can construct expensive queries that timeout or consume excessive resources","Variables must be passed as JSON; no support for file uploads or multipart requests","No automatic query caching — repeated identical queries hit the endpoint each time","Error messages from the GraphQL endpoint are passed through verbatim, which may expose internal schema details"],"requires":["ENDPOINT env var pointing to a live GraphQL endpoint","HEADERS env var (optional, JSON string) for authentication/custom headers","ALLOW_MUTATIONS=true if mutations are needed (default: false)","GraphQL endpoint must accept POST requests with application/json content-type"],"input_types":["GraphQL query string (text)","Variables object (JSON, optional)"],"output_types":["GraphQL response object with 'data' and 'errors' fields (JSON)"],"categories":["tool-use-integration","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-blurrah-mcp-graphql__cap_2","uri":"capability://tool.use.integration.mcp.server.lifecycle.management.with.stdio.transport","name":"mcp server lifecycle management with stdio transport","description":"Implements a full Model Context Protocol server using the @modelcontextprotocol/sdk that manages the complete MCP lifecycle: server initialization with name/version metadata, resource and tool registration, stdio-based bidirectional communication with MCP clients, and graceful shutdown. The server uses Node.js stdio streams (stdin/stdout) as the transport layer, enabling seamless integration with MCP-compatible clients like Claude Desktop and Cline without requiring HTTP/WebSocket infrastructure.","intents":["I want to expose GraphQL capabilities to Claude Desktop or other MCP clients without setting up a web server","I need my LLM tool to communicate with an MCP server using standard process I/O","I want to package GraphQL access as a reusable MCP server that multiple LLM clients can connect to"],"best_for":["Developers building Claude Desktop plugins or extensions","Teams deploying MCP servers in containerized environments (Docker, Kubernetes)","Solo developers prototyping LLM agents with local GraphQL backends"],"limitations":["Stdio transport is single-client only — cannot handle concurrent connections from multiple MCP clients","No built-in authentication/authorization — relies on process-level access control","Server crashes or hangs will break the stdio pipe, requiring client reconnection","Debugging stdio-based communication requires special tooling (not visible in standard logs)"],"requires":["Node.js 16+ runtime","@modelcontextprotocol/sdk package (installed via npm)","MCP-compatible client that can spawn and communicate with child processes"],"input_types":["MCP protocol messages (JSON-RPC format via stdin)"],"output_types":["MCP protocol responses (JSON-RPC format via stdout)"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-blurrah-mcp-graphql__cap_3","uri":"capability://automation.workflow.environment.driven.configuration.with.fallback.schema.support","name":"environment-driven configuration with fallback schema support","description":"Implements configuration management through environment variables (ENDPOINT, HEADERS, ALLOW_MUTATIONS, NAME, SCHEMA) that control server behavior at startup. The system supports a fallback mechanism where if a SCHEMA file path is provided, the server reads the local schema file instead of introspecting the live endpoint, enabling offline operation and schema caching. Headers are parsed from a JSON string in the HEADERS env var and injected into all GraphQL requests, supporting authentication tokens and custom headers without code changes.","intents":["I want to configure the GraphQL endpoint and auth headers without modifying code","I need to use a cached schema file when the GraphQL endpoint is unavailable","I want to control whether mutations are allowed via environment configuration"],"best_for":["DevOps teams deploying mcp-graphql in containerized environments","Developers wanting to switch between different GraphQL endpoints per deployment","Teams managing authentication tokens and headers via environment secrets"],"limitations":["Configuration is read only at server startup — changes require server restart","HEADERS must be valid JSON; malformed JSON will cause server startup failure","No support for environment variable interpolation or templating","SCHEMA file path is relative to current working directory; absolute paths recommended for reliability"],"requires":["Environment variables set before server startup (ENDPOINT, HEADERS, ALLOW_MUTATIONS, NAME, SCHEMA)","Valid JSON string for HEADERS env var if authentication is needed","Readable file at SCHEMA path if using local schema fallback"],"input_types":["Environment variables (strings)"],"output_types":["Server configuration object (internal)"],"categories":["automation-workflow","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-blurrah-mcp-graphql__cap_4","uri":"capability://safety.moderation.mutation.safety.enforcement.with.explicit.opt.in","name":"mutation safety enforcement with explicit opt-in","description":"Implements a security control that blocks GraphQL mutation operations by default (ALLOW_MUTATIONS=false) and only allows them when explicitly enabled via environment variable. The server validates incoming GraphQL queries to detect mutation operations (queries containing 'mutation' keyword or mutation root types) and rejects them with an error message if mutations are disabled, preventing accidental or malicious data modification through LLM-generated queries.","intents":["I want to prevent my LLM from accidentally modifying data in the GraphQL backend","I need to allow only read-only queries by default and opt-in to mutations for specific use cases","I want a safety guardrail that stops dangerous LLM operations at the MCP server level"],"best_for":["Production deployments where LLMs should only read data","Teams building LLM agents that should not modify backend state","Developers wanting defense-in-depth security (mutation blocking at server + endpoint-level permissions)"],"limitations":["Detection is string-based (looks for 'mutation' keyword) — may have false positives/negatives with unusual query formatting","Does not validate mutation permissions at the field level — only blocks all mutations or allows all","Requires explicit ALLOW_MUTATIONS=true to enable; no granular per-operation control","Does not prevent queries that indirectly cause side effects (e.g., expensive queries that trigger backend jobs)"],"requires":["ALLOW_MUTATIONS env var set to 'true' (string) to enable mutations; default is false"],"input_types":["GraphQL query string (text)"],"output_types":["Error response if mutation is blocked (JSON)"],"categories":["safety-moderation","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-blurrah-mcp-graphql__cap_5","uri":"capability://tool.use.integration.request.header.injection.with.authentication.support","name":"request header injection with authentication support","description":"Implements a header injection mechanism that parses a JSON string from the HEADERS environment variable and injects those headers into every HTTP request sent to the GraphQL endpoint. This enables passing authentication tokens (Bearer tokens, API keys), custom headers (User-Agent, X-Custom-Header), and other request metadata without modifying the query execution logic. Headers are applied uniformly to all introspection and query execution requests.","intents":["I need to authenticate requests to a GraphQL endpoint that requires Bearer tokens or API keys","I want to pass custom headers (like X-Request-ID or User-Agent) to the GraphQL endpoint","I need to inject authorization headers without embedding them in the MCP server code"],"best_for":["Developers integrating with authenticated GraphQL APIs (Auth0, JWT, API key-based)","Teams managing secrets via environment variables in containerized deployments","Enterprises requiring custom header injection for logging, tracing, or compliance"],"limitations":["HEADERS must be valid JSON; parsing errors will cause server startup failure with no fallback","Headers are static — cannot be rotated or refreshed without server restart","No support for header templating or dynamic values (e.g., timestamps, request IDs)","All headers are applied to all requests; no per-request customization","Header values are passed through as-is; no escaping or validation"],"requires":["HEADERS env var containing valid JSON object (e.g., '{\"Authorization\": \"Bearer token123\"}')","Proper JSON escaping if headers contain special characters"],"input_types":["JSON string in HEADERS env var"],"output_types":["HTTP headers injected into requests (internal)"],"categories":["tool-use-integration","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-blurrah-mcp-graphql__cap_6","uri":"capability://data.processing.analysis.graphql.response.error.passthrough.with.full.semantics","name":"graphql response error passthrough with full semantics","description":"Implements response handling that returns the complete GraphQL response object (including both 'data' and 'errors' fields) to the LLM, preserving GraphQL's native error semantics. When a GraphQL query returns errors (validation errors, resolver errors, authentication failures), the server passes the full error objects back to the LLM rather than throwing exceptions or flattening the response, allowing the LLM to reason about partial failures and retry logic.","intents":["I want my LLM to see both successful data and error information from GraphQL queries","I need the LLM to understand why a query failed (validation error vs resolver error vs auth failure)","I want to implement retry logic in the LLM based on the type of GraphQL error"],"best_for":["LLM agents that need to handle partial failures and retry logic","Developers building resilient GraphQL clients that reason about error types","Teams wanting LLMs to understand GraphQL-specific error semantics"],"limitations":["Error messages from the GraphQL endpoint are passed through verbatim — may expose internal schema details or sensitive information","No automatic error sanitization or redaction — requires additional security layer if endpoint errors contain secrets","LLM may misinterpret GraphQL errors as successful responses if it doesn't parse the 'errors' field","No built-in error categorization (e.g., retryable vs permanent) — LLM must infer from error message"],"requires":["GraphQL endpoint that returns proper GraphQL response format (data + errors fields)"],"input_types":["GraphQL query string"],"output_types":["GraphQL response object with 'data' and 'errors' fields (JSON)"],"categories":["data-processing-analysis","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"github_mcp-blurrah-mcp-graphql__cap_7","uri":"capability://memory.knowledge.local.schema.file.caching.with.sdl.json.support","name":"local schema file caching with sdl/json support","description":"Implements a schema fallback mechanism that reads GraphQL schema from a local file (specified via SCHEMA env var) instead of introspecting a live endpoint. The server supports both GraphQL SDL (Schema Definition Language) and JSON introspection format, allowing pre-cached schemas to be used for offline operation or to avoid repeated introspection calls. This enables the same server binary to work with cached schemas in development or when the endpoint is temporarily unavailable.","intents":["I want to use a cached GraphQL schema when the endpoint is offline or unavailable","I need to avoid repeated introspection calls to a slow or rate-limited GraphQL endpoint","I want to version control the GraphQL schema alongside my LLM application code"],"best_for":["Development teams working offline or with unreliable endpoint connectivity","Teams wanting to version control GraphQL schemas in git","Developers optimizing for startup time by avoiding introspection queries"],"limitations":["Schema file must be manually kept in sync with the actual endpoint — no automatic refresh","Both SDL and JSON formats are supported, but format detection is implicit (not explicit)","Large schema files (100+ types) may cause slow server startup due to file I/O","No schema validation — invalid schema files will cause runtime errors when LLM tries to use them","File path is relative to current working directory; absolute paths recommended"],"requires":["SCHEMA env var pointing to a readable GraphQL schema file (SDL or JSON introspection format)","File must be valid GraphQL schema (SDL or introspection JSON)"],"input_types":["GraphQL schema file (SDL text or JSON introspection format)"],"output_types":["Parsed GraphQL schema (internal representation)"],"categories":["memory-knowledge","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":36,"verified":false,"data_access_risk":"moderate","permissions":["GraphQL endpoint accessible at ENDPOINT env var (default: http://localhost:4000/graphql) OR local schema file path via SCHEMA env var","MCP-compatible client (Claude Desktop, Cline, or other MCP host)","Node.js 16+ (TypeScript runtime)","ENDPOINT env var pointing to a live GraphQL endpoint","HEADERS env var (optional, JSON string) for authentication/custom headers","ALLOW_MUTATIONS=true if mutations are needed (default: false)","GraphQL endpoint must accept POST requests with application/json content-type","Node.js 16+ runtime","@modelcontextprotocol/sdk package (installed via npm)","MCP-compatible client that can spawn and communicate with child processes"],"failure_modes":["Schema is static at server startup — does not reflect real-time schema changes without server restart","Introspection queries may timeout on very large schemas (100+ types with deep nesting)","Local schema files must be manually kept in sync with actual endpoint schema","Mutations are disabled by default (ALLOW_MUTATIONS=false) — requires explicit opt-in to prevent accidental data modification","No built-in query complexity analysis — LLMs can construct expensive queries that timeout or consume excessive resources","Variables must be passed as JSON; no support for file uploads or multipart requests","No automatic query caching — repeated identical queries hit the endpoint each time","Error messages from the GraphQL endpoint are passed through verbatim, which may expose internal schema details","Stdio transport is single-client only — cannot handle concurrent connections from multiple MCP clients","No built-in authentication/authorization — relies on process-level access control","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.3375026618741649,"quality":0.26,"ecosystem":0.55,"match_graph":0.25,"freshness":0.6,"weights":{"adoption":0.25,"quality":0.25,"ecosystem":0.15,"match_graph":0.23,"freshness":0.12}},"observed_outcomes":{"matches":0,"success_rate":0,"avg_confidence":0,"top_intents":[],"last_matched_at":null},"maintenance":{"status":"active","updated_at":"2026-05-24T12:16:22.064Z","last_scraped_at":"2026-05-03T14:23:38.364Z","last_commit":"2025-09-08T14:28:14Z"},"community":{"stars":383,"forks":58,"weekly_downloads":null,"model_downloads":null,"model_likes":null}},"distribution":{"claim_url":"https://unfragile.ai/submit?claim=mcp-blurrah-mcp-graphql","compare_url":"https://unfragile.ai/compare?artifact=mcp-blurrah-mcp-graphql"}},"signature":"1Y2DptR2XIozVkgv1u0KyVCPFsXslow//k0/kSHP4M2EmwVSToCoMmasuJKacbgdfOvMBtkOcV4F1wJ9zwoADA==","signedAt":"2026-06-20T10:50:54.990Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/mcp-blurrah-mcp-graphql","artifact":"https://unfragile.ai/mcp-blurrah-mcp-graphql","verify":"https://unfragile.ai/api/v1/verify?slug=mcp-blurrah-mcp-graphql","publicKey":"https://unfragile.ai/api/v1/trust-passport-public-key","spec":"https://unfragile.ai/trust","schema":"https://unfragile.ai/schema.json","docs":"https://unfragile.ai/docs"}}