UCAI MCP Server

🙇‍♀️ Universal Contract AI Interface ☑️ UCAI in Anthropic MCP Registry 🌐 Try the Web Builder →. It runs locally over stdio via the published package.

People who work with abi, arbitrum and blockchain and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-09-15 · ★ 37 · #269 OF 945 MAINTAINED OTHER · VERIFIED 2026-09-18

NOASSERTION · Python servers · how we verify → /methodology

01 · Install UCAI

before you install - you'll need

RPC_URL

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

Claude Code

claude mcp add nirholas-ucai -- uvx abi-to-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "nirholas-ucai": {
      "command": "uvx",
      "args": [
        "abi-to-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 no standard license detected - usage rights unclear; check the repo before commercial use

pypi package abi-to-mcp - check the name against the project README before installing (PyPI has no namespace ownership)

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

03 · Who maintains UCAI

UCAI is maintained by nirholas. We track 66 MCP servers from nirholas - 65 actively maintained, 7,838 combined GitHub stars, oldest repo from Feb 2024. Full record: all servers from nirholas.

04 · Facts

repository: github.com/nirholas/ucai
category: other - ranked #269 of 945 actively-maintained other servers as of 2026-09-18.
registry: io.github.nirholas/abi-to-mcp (active, first published 2026-01-05 · 2 versions)
packages: pypi:abi-to-mcp

05 · UCAI FAQ

What is UCAI?

🙇‍♀️ Universal Contract AI Interface ☑️ UCAI in Anthropic MCP Registry 🌐 Try the Web Builder →. It runs locally over stdio via the published package.

Is UCAI still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-15. We re-verify nightly.

How do I install UCAI?

Run `uvx abi-to-mcp`. The README documents one environment variable (RPC_URL) to set first. You can also paste the ready-made client config above.

Does UCAI run locally?

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

06 · Alternatives to UCAI

Alternatives to UCAI

Maintained other servers if UCAI isn't the fit.

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