2s Io MCP Server

Client SDK + MCP server for 2s.io - the (most) everything API. One pay-per-call API giving AI agents ground-truth data across hundreds of endpoints, paid per call in USDC on Base or Solana via x402. It runs locally over stdio via the published package.

People connecting API integration tools to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-08-21 · ★ 6 · #25 OF 250 MAINTAINED API INTEGRATION · VERIFIED 2026-08-25

MIT · TypeScript servers · how we verify → /methodology

01 · Install 2s Io MCP Server

before you install - you'll need

EVM_PRIVATE_KEY

Environment variables documented in the project's README - it lists which are required and which have defaults.

Claude Code

claude mcp add 2s-io-sdk -- npx -y @2sio/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "2s-io-sdk": {
      "command": "npx",
      "args": [
        "-y",
        "@2sio/mcp"
      ]
    }
  }
}

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 MIT - declared in the repository

npm package @2sio/mcp - the @2sio scope differs from the repo owner (2s-io); confirm it's the project's official package

registry namespace io.github.2s-io is GitHub-verified and matches the repo owner

03 · What 2s Io MCP Server can do

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

Latest releases

v1.82.0 · 2026-08-21

Stable release matching @2sio/[email protected] on npm. · Live endpoint catalog: · npm install @2sio/sdk · pip install 2sio[evm] · npx -y @2sio/mcp

v1.81.0 · 2026-08-03

Stable release matching @2sio/[email protected] on npm. · Live endpoint catalog: · npm install @2sio/sdk · pip install 2sio[evm] · npx -y @2sio/mcp

v1.80.4 · 2026-07-20

Stable release matching @2sio/[email protected] on npm. · Live endpoint catalog: · npm install @2sio/sdk · pip install 2sio[evm] · npx -y @2sio/mcp

04 · Who maintains 2s Io MCP Server

mcp is maintained by 2s-io. It's the only MCP server we track from this author; the repo dates to May 2026.

05 · Facts

repository: github.com/2s-io/sdk
website: https://2s.io/
category: API integration - ranked #25 of 250 actively-maintained API integration servers as of 2026-08-25.
release cadence: 10+ releases in the last 90 days (latest 2026-08-21)
registry: io.github.2s-io/mcp (active, first published 2026-05-30 · 88 versions)
packages: npm:@2sio/mcp

06 · 2s Io MCP Server FAQ

What is 2s Io MCP Server?

Is 2s Io MCP Server still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-21 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install 2s Io MCP Server?

Run `npx -y @2sio/mcp`. The README documents one environment variable (EVM_PRIVATE_KEY) to set first. You can also paste the ready-made client config above.

Does 2s Io MCP Server 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 2s Io MCP Server

Alternatives to 2s Io MCP Server

Maintained API integration servers if 2s Io MCP Server isn't the fit.

More API integration MCP servers · Open Library · Airflow MCP Server · Google Search Console · Fathom MCP Server · Companies House

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