A local MCP server that runs the nl-openapi-mcp Python package. MCP is a way for an AI agent to connect to an external tool or service; this server uses an NL API key and an operating-system trust setting.

Use it when a project needs to connect to the nl-openapi-mcp service through a local MCP process. You must provide the required NL_API_KEY and NL_OS_TRUST environment variables.

It provides a configured connection to the service exposed by that package, so an agent can use it when the required environment variables are available. The supplied details do not specify which operations the service supports.

nl — MCP server for Claude Code and Codex by rubatoyd: A local MCP server that runs the nl-openapi-mcp Python…

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add mcp/rubatoyd/nl-openapi-mcp/nl

Clone the repo

git clone --depth 1 https://github.com/rubatoyd/nl-openapi-mcp

Made for: Claude Code, Codex, Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/mcp/rubatoyd/nl-openapi-mcp/nl.svg)](https://agentmods.dev/mcp/rubatoyd/nl-openapi-mcp/nl)

Your own site

<a href="https://agentmods.dev/mcp/rubatoyd/nl-openapi-mcp/nl"><img src="https://agentmods.dev/badge/mcp/rubatoyd/nl-openapi-mcp/nl.svg" alt="Measured on agentmods" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

nl scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.mcp.json · 15 lines

What it actually says

{
  "nl": {
    "type": "stdio",
    "command": "uvx",
    "args": [
      "--from",
      "git+https://github.com/rubatoyd/nl-openapi-mcp",
      "nl-mcp"
    ],
    "env": {
      "NL_API_KEY": "${NL_API_KEY:-}",
      "NL_OS_TRUST": "${NL_OS_TRUST:-1}"
    }
  }
}

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

3d ago First seen · 15 lines scan A 9e17ebae95e1

Subscribe to this mod's changes

nl is an MCP server published in the GitHub repository rubatoyd/nl-openapi-mcp (0 stars, last pushed 3d ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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