mcp-registry-spec-sdk

Creates a strongly-typed client instance for querying the official Model Context Protocol Registry API with full TypeScript type safety. The SDK wraps raw HTTP endpoints with a typed interface layer, enabling IDE autocomplete and compile-time validation of registry queries without manual endpoint URL construction or response parsing.

Queries the registry to retrieve detailed metadata about registered MCP servers including their capabilities, configuration schemas, supported protocols, and version information. The SDK deserializes registry responses into typed objects that expose server capabilities as structured data, enabling programmatic inspection of what tools, resources, and prompts each server provides.

Automatically validates and deserializes HTTP responses from the MCP Registry API against the official schema, converting raw JSON into strongly-typed TypeScript objects. The SDK handles response parsing, error detection, and type coercion, ensuring that invalid or malformed registry responses fail fast with clear error messages rather than silently producing incorrect data.

Retrieves version information and compatibility metadata for MCP servers from the registry, including supported MCP protocol versions, minimum client requirements, and breaking changes across versions. The SDK exposes version data as typed objects, enabling clients to determine compatibility before attempting to connect to a server.

Handles pagination of registry API responses to enable efficient bulk listing of all available MCP servers without memory overload. The SDK abstracts pagination logic (cursor-based or offset-based), allowing developers to iterate through large server lists using async iterators or batch fetch methods while maintaining type safety across paginated results.

Retrieves and exposes the JSON Schema for MCP server configuration parameters from the registry, enabling clients to validate and generate configuration UI forms before instantiating servers. The SDK deserializes configuration schemas as typed objects, allowing programmatic inspection of required fields, default values, validation constraints, and field descriptions.

Provides robust error handling for MCP Registry API failures with automatic exponential backoff retry logic, timeout management, and detailed error messages. The SDK distinguishes between transient errors (network timeouts, rate limits) and permanent errors (invalid server ID, authentication failure), retrying only when appropriate. Includes circuit breaker patterns to prevent cascading failures when the registry is unavailable.

Provides chainable methods to filter and transform MCP registry query results, enabling developers to narrow results by capability, language, implementation type, or custom predicates without making additional API calls. The SDK supports map, filter, and reduce operations on result sets, as well as sorting and pagination of client-side results. Useful for applications that need to apply complex filtering logic beyond what the registry API supports.