Mcp Ts Core
A TypeScript framework for building MCP servers, not a server itself. You install it as a dependency and use its declarative builders to define tools, resources, and prompts with Zod schemas. The framework handles transports (stdio, HTTP), auth (JWT, OAuth), storage backends, OpenTelemetry tracing, and graceful shutdown. Two standout features: enrichment contracts that automatically populate both structuredContent and content arrays so Claude Code and Claude Desktop both get context, and typed error contracts where you declare failure modes upfront and the linter checks your handler against them. Runs on Bun, Node, and Cloudflare Workers. Reach for this when you want to build domain logic without writing plumbing code.
- GitHub stars
- 153
- tool
- 1
- transport
- STDIO, HTTP
- env vars
- 6
- last updated
- Nov 8, 2026
Tools
1 toolsPublic tool metadata for what this MCP can expose to an agent.
catalog_searchSearch catalog item names. An empty query lists all items.
Search catalog item names. An empty query lists all items.
No parameter schema in public metadata yet.
Sponsors
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MCP_LOG_LEVELdefault: infoSets the minimum log level for output (e.g., 'debug', 'info', 'warn').
MCP_TRANSPORT_TYPEdefault: httpSelects the HTTP transport.
MCP_HTTP_HOSTdefault: 127.0.0.1The hostname for the HTTP server.
MCP_HTTP_PORTdefault: 3010The port to run the HTTP server on.
MCP_HTTP_ENDPOINT_PATHdefault: /mcpThe endpoint path for the MCP server.
MCP_AUTH_MODEdefault: noneAuthentication mode to use: 'none', 'jwt', or 'oauth'.
Readme
@cyanheads/mcp-ts-core
Agent-native TypeScript framework for building MCP servers.
Runtime infrastructure for your server, and the agent skills to build, test, and ship it.
Build AI tools for anything you can describe
Details
- Repository
- github.com/cyanheads/mcp-ts-core
- Category
- AI & LLM Tools
- Package
@cyanheads/mcp-ts-core- Transport
- STDIO, HTTP
- Registry
- MCP registry, active
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