Ts Core MCP Server

Agent-native TypeScript framework for building MCP servers. Runtime infrastructure for your server, and the agent skills to build, test, and ship it. It runs locally over stdio via the published package.

People who work with opentelemetry, cloudflare workers and agent native and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-09-27 · ★ 152 · #3 OF 165 MAINTAINED CLOUD INFRASTRUCTURE · VERIFIED 2026-09-30

Apache-2.0 · TypeScript servers · how we verify → /methodology

01 · Install Ts Core

Claude Code

claude mcp add cyanheads-mcp-ts-core -- npx -y @cyanheads/mcp-ts-core

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "cyanheads-mcp-ts-core": {
      "command": "npx",
      "args": [
        "-y",
        "@cyanheads/mcp-ts-core"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license Apache-2.0 - declared in the repository

npm package @cyanheads/mcp-ts-core - published under the repo owner's npm scope (@cyanheads)

registry namespace io.github.cyanheads is GitHub-verified and matches the repo owner

03 · What Ts Core can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.13.10 · 2026-09-27

Consent-gate fix, request IDs on errors, multi-arch builds · ctx.inputs keeps only responses the client's declared capabilities and modes cover, so a client that did not declare elicitation, or declared only its URL…

v0.13.9 · 2026-09-26

Argument repairs, pacer fixes, private canvas scratch dirs · Canvas scratch files live in a private mkdtemp directory inside CANVAS_TEMP_PATH, now a parent directory, instead of the shared <tmpdir>/mcp-canvas (#554)…

v0.13.8 · 2026-09-26

client-safe error data, aligned error telemetry, OTLP log export · Marked breaking and security: caller-visible error codes change (-32007 → -32603 for output-contract and resource-limit failures, -32011 → -32004 for a…

04 · Who maintains Ts Core

mcp-ts-core is maintained by cyanheads. We track 137 MCP servers from cyanheads - 131 actively maintained, 1,856 combined GitHub stars, oldest repo from Dec 2024. Full record: all servers from cyanheads.

  1. obsidian-mcp-server Read, write, search, and surgically edit Obsidian notes, tags, and frontmatter via MCP. ★ 690
  2. git-mcp-server Comprehensive Git MCP server enabling native git tools including clone, commit, worktree, & more. ★ 240
  3. clinicaltrialsgov-mcp-server Search ClinicalTrials.gov - find studies, retrieve results, match patients to eligible trials. ★ 96
  4. openalex-mcp-server Access the OpenAlex academic research catalog - 270M+ publications. ★ 14
  5. mcp-ts-template TypeScript template for building MCP servers with declarative tooling, observability, and auth. ★ 152
  6. eur-lex-mcp-server Search EU legislation, CJEU case law, and treaties; traverse CELLAR graph; browse EuroVoc concepts. ★ 8

05 · Facts

category
cloud infrastructure - ranked #3 of 165 actively-maintained cloud infrastructure servers as of 2026-09-30.
release cadence
10+ releases in the last 90 days (latest 2026-09-27)
registry
io.github.cyanheads/mcp-ts-core (active, first published 2026-03-20 · 147 versions)
packages
npm:@cyanheads/mcp-ts-core · npm:@cyanheads/mcp-ts-core

06 · Ts Core FAQ

What is 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. It runs locally over stdio via the published package.

Is Ts Core still maintained?

Yes - as of 2026-09-30, its last commit was 2026-09-27 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Ts Core?

Run `npx -y @cyanheads/mcp-ts-core`. You can also paste the ready-made client config above.

Does Ts Core run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Ts Core

head to head · Ts Core vs Azure MCP Server · Kubernetes MCP Server vs Ts Core · Ts Core vs Coolify