API Tester MCP Server

by ryudi84 Your server? Claim it

local only

API Tester runs on your own machine — the client starts it, so there is no endpoint to ping. 31 installs a week from npm. Last commit 25 Feb 2026.

MCP server for API testing: HTTP requests, cURL generation, health checks.

Installs per day peak 10 · avg 2 · -4% w/w

a month agotoday

Installs / week

npm · sovereign-api-tester-mcp

Stars

0 open issues

25 Feb 2026

Last commit

0 releases in 90 days

—

License

JavaScript

What the code does

We read the source, 20 h ago · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Runs with shell=True mcp_forge.py:201

        subprocess.run(["npm", "install"], cwd=str(server_dir), capture_output=True, timeout=60, shell=True)

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add api-tester -- npx -y sovereign-api-tester-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "api-tester": {
      "args": [
        "-y",
        "sovereign-api-tester-mcp"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.api-tester]
command = "npx"
args = ["-y", "sovereign-api-tester-mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "api-tester": {
      "args": [
        "-y",
        "sovereign-api-tester-mcp"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "api-tester": {
      "args": [
        "-y",
        "sovereign-api-tester-mcp"
      ],
      "command": "npx"
    }
  }
}

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API Tester — questions

Answers built from our own checks of this server.

Why is there no uptime for API Tester?

API Tester runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package sovereign-api-tester-mcp was installed 31 times last week.

How do I connect API Tester?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls sovereign-api-tester-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use API Tester?

The npm package sovereign-api-tester-mcp was installed 31 times in the last week. Week over week that is -4%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is API Tester open source?

We cannot say either way: written in JavaScript and 1 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.