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Apiclaw

by @nordsym

Discover APIs and execute authenticated calls through local MCP, Remote MCP, CLI, HTTP, or SKILL.md.

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Install Apiclaw

Pick your client, then add it in one click or paste the config.

STDIONode.js
~/Library/Application Support/Claude/claude_desktop_config.json
claude_desktop_config.json
{
  "mcpServers": {
    "nordsym-apiclaw": {
      "command": "npx",
      "args": [
        "-y",
        "@nordsym/apiclaw"
      ]
    }
  }
}

Settings → Developer → Edit Config, merge this into mcpServers, then fully quit and reopen Claude Desktop.

Automated check passed— started and listed 14 tools correctly (Today).

Overview

@nordsym/apiclaw provides an authenticated API discovery and execution layer for AI agents. It supports local MCP, Remote MCP, CLI, HTTP gateway, and SKILL.md access, with credentials retained server-side after browser sign-in. Use it when an agent needs to find APIs by capability and call supported services without managing each provider's SDK or credentials. API access can also route across configured model providers through a selectable parameter.

Use cases

  • Discover APIs by capability for an AI agent
  • Execute authenticated API calls without exposing provider credentials
  • Connect desktop agents through local MCP
  • Call supported APIs from a CLI or HTTP workflow
  • Submit OpenAPI definitions for workspace discovery

Key features

  • API catalog discovery
  • Authenticated API execution
  • Local and Remote MCP access
  • CLI and HTTP gateway interfaces
  • Browser-based sign-in with shared credentials
  • OpenAPI URL or file submissions

Tools14

What Apiclaw lets your agent do. Expand a tool for its parameters.

Verified live~3.4k tokens of context

Security & health

What it can reach and how reliably it runs — from our own checks, not the maintainer’s claims.

ActiveLast checked Today

Recent health check succeeded.

What it can do

From the 14 tools this server returned when we ran it.

Runs commands · 14Makes network requests · 14
Network at startup4 connections
Files written at startup2
Install scriptspostinstall
npm provenanceSigned build
Package age262 days
Maintainers1

Observed 2026-11-06 in an isolated sandbox. A description of reach, not a security audit.

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 11h ago via OSV.dev · @nordsym/apiclaw (npm)

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars8Stargazers on the source repository.
npm downloads1.6kPackage downloads in the last 30 days.
Last commitTodayMost recent push to the default branch.
Availability100%Our rolling endpoint + install checks that succeeded.
Install checkPassedOur sandbox started it and listed its tools.
Tools exposed14Callable tools this server registers over MCP.

How Apiclaw works

What @nordsym/apiclaw does

@​nordsym/apiclaw gives AI agents a common way to discover and invoke external APIs. Agents can search a catalog of API definitions, identify callable services, and execute requests through authenticated provider connections. The service is designed around one sign-in rather than separate credentials for every API, while execution credentials remain on the server side.

Access is available through several interfaces: a local MCP process, a hosted Remote MCP endpoint, a command-line interface, an HTTP gateway, or the hosted SKILL.md instructions. This makes the package suitable for desktop agents, terminal workflows, hosted agents, and applications that prefer direct HTTP calls.

How it works

For a local installation, the package stores the authenticated account configuration in ~/.apiclaw.toml. A browser-based login establishes the credential, which can then be reused across the local MCP, CLI, HTTP, and Remote MCP paths. The CLI can confirm the authenticated account with whoami before making a request.

Headless and cloud environments use a different sign-in flow. An unsigned first run returns a browser URL in the form https://apiclaw.cloud/auth/cli?authId=…; the user authorizes that URL, after which the same chat or workflow can continue with identity checks and API calls.

API discovery can include workspace submissions imported from OpenAPI URLs or JSON/YAML files. Submitted entries go through operator review before their metadata becomes searchable. Discovery status and execution availability are separate concerns: finding an API does not by itself make it callable.

Setup and configuration

Install the package globally for local MCP and CLI use, then authenticate on a machine where the user can open a browser:

Terminal
npm install -g @nordsym/apiclaw
npx @nordsym/apiclaw auth login
npx @nordsym/apiclaw whoami

The hosted entry points are the Remote MCP endpoint at https://apiclaw.cloud/mcp, the HTTP execution endpoint at https://api.apiclaw.cloud/v1/execute, and the setup instructions at https://apiclaw.cloud/SKILL.md. HTTP requests use a bearer key. A workspace is optional.

Tools and capabilities

  • Discover API definitions by capability, including workspace-listed APIs.
  • Execute supported APIs through authenticated provider connections.
  • Call the CLI with an API identifier and JSON parameters.
  • Expose the same account across local MCP, Remote MCP, CLI, and HTTP access.
  • Route across supported model providers, including OpenAI, Anthropic, OpenRouter, xAI, Groq, Mistral, and DeepInfra, or use a configured endpoint.
  • Submit OpenAPI-based API listings for review through the workspace catalog.

Limitations and notes

API discovery is broader than execution. Source verification provides discovery evidence and is not proof that a request will execute. Listing an API does not enable execution, credential custody, or billing, and approved metadata still does not guarantee a callable integration.

Free access includes discovery and zero-cost APIs, plus a limited number of managed calls after login. Paid APIs use provider cost plus a 15% margin and require a card; actions without an exact billing adapter remain blocked. The project is MIT licensed.

Read the full README View source on GitHub

Reviews

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Frequently Asked Questions about Apiclaw

@nordsym/apiclaw is an MCP server that connects AI agents to a catalog of external API definitions and authenticated provider endpoints. Its main capabilities are discovering APIs by capability and executing supported API calls, with access also available through the CLI, HTTP gateway, Remote MCP, and SKILL.md.

Install it globally with `npm install -g @nordsym/apiclaw`, then run `npx @nordsym/apiclaw auth login` on a machine where the user can open a browser. The package can then provide local MCP and CLI access, while hosted users can use the Remote MCP endpoint.

Use the browser authorization URL returned by an unsigned first run instead of running `auth login`. Open the displayed `https://apiclaw.cloud/auth/cli?authId=…` URL, complete authorization, and continue with `whoami` and the first call in the same chat or workflow.

Yes, Cursor is named as a supported local MCP client. Install the package and authenticate on a machine the user can access, then configure Cursor to use the local MCP server according to its MCP setup process.

No, discovery does not guarantee execution. Source verification is discovery evidence rather than proof of execution, and APIs without the required execution support or exact billing adapter may remain unavailable.

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