Liquid MCP Server

Connect your AI agent to anything - with no connector to write or maintain. Point Liquid at a URL or a database and it works out the interface for you: discovers its shape, maps it to the fields you asked for, and handles auth, pagination and normalization - typed records, no client code. When the upstream drifts, it re-maps and keeps going. The same small API - fetch · query · write · sense - reaches web APIs…

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

VERIFIED ACTIVE

LAST COMMIT 2026-06-09 · ★ 2 · #156 OF 250 MAINTAINED API INTEGRATION · VERIFIED 2026-08-25

Python servers · how we verify → /methodology

01 · Install Liquid

before you install - you'll need

OPENAI_API_KEY

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

Claude Code

claude mcp add ertad-family-liquid -- uvx liquid-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "ertad-family-liquid": {
      "command": "uvx",
      "args": [
        "liquid-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 liquid-mcp - check the name against the project README before installing (PyPI has no namespace ownership)

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

03 · What Liquid can do

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

Latest releases

v0.67.0 · 2026-06-04

Email adapter - an agent's mail senses & hands · Mail joins the modality set: read a mailbox, perceive new mail as it arrives (sense), and send - over raw IMAP/SMTP or the Gmail API. · Raw IMAP/SMTP - no new dependency…

v0.36.1 · 2026-05-27

Docs synced with the shipped MCP server / built-in LLM backends / file persistence (docs previously said bring-your-own-LLM only). Registry discoverability: uvx config + mcp-name marker. No code changes.

v0.36.0 · 2026-05-27

Liquid now connects essentially any model - hosted, local, or custom. · CallableBackend - wrap any callable (messages -> str, sync/async, or returning LLMResponse) into an LLMBackend. Universal escape hatch: plug in…

04 · Who maintains Liquid

Liquid is maintained by ertad-family. It's the only MCP server we track from this author; the repo dates to Apr 2026.

05 · Facts

repository: github.com/ertad-family/liquid
category: API integration - ranked #156 of 250 actively-maintained API integration servers as of 2026-08-25.
release cadence: 4 releases in the last 90 days (latest 2026-06-04)
registry: io.github.ertad-family/liquid (active, first published 2026-05-27 · 2 versions)
packages: pypi:liquid-mcp

06 · Liquid FAQ

What is Liquid?

Is Liquid still maintained?

Yes - as of 2026-08-25, its last commit was 2026-06-09 and it shipped 4 releases in the last 90 days. We re-verify nightly.

How do I install Liquid?

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

Does Liquid 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.

07 · Alternatives to Liquid

Alternatives to Liquid

Maintained API integration servers if Liquid isn't the fit.

More API integration MCP servers · BoondManager MCP Server · File To PDF · Fingerprint · Llmtrim · Fr24api MCP

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