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Pipeworx numbersapi
by
Bruce Gutman
· GitHub ↗
· v1.0.0
· MIT-0
66
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Install in OpenClaw
/install pipeworx-numbersapi
Description
NumbersAPI MCP — wraps numbersapi.com (free, no auth)
Usage Guidance
This skill instructs the agent to run `npx mcp-remote@latest` and connect to https://gateway.pipeworx.io — meaning it will download and execute code from the npm registry and communicate with an external service. Before installing, consider: 1) Require the publisher to pin a specific mcp-remote version (avoid @latest) and provide the package source or a checksum so you can audit it. 2) Ask for the `npx`/Node prerequisite to be declared. 3) Verify what data the gateway receives and whether traffic is encrypted and logged. 4) If you cannot audit the remote package or trust the gateway, run the skill only in a tightly sandboxed environment or decline installation.
Capability Analysis
Type: OpenClaw Skill
Name: pipeworx-numbersapi
Version: 1.0.0
The skill is a standard MCP (Model Context Protocol) wrapper for the NumbersAPI, facilitating access to number-related facts. It utilizes 'npx' to execute 'mcp-remote' and connects to a remote gateway at 'https://gateway.pipeworx.io/numbersapi/mcp'. No malicious logic, data exfiltration, or prompt injection attempts were identified in the SKILL.md or _meta.json files.
Capability Assessment
Purpose & Capability
The skill claims to wrap numbersapi.com, which is consistent with the listed tools (number_fact, date_fact, math_fact, random_fact). However, the SKILL.md instructs the agent to run `npx mcp-remote@latest https://gateway.pipeworx.io/numbersapi/mcp` while the registry metadata lists no required binaries or install steps. Declaring no required binaries is inconsistent with an instruction that requires `npx`/Node.
Instruction Scope
The runtime instructions will cause the agent to download and execute a remote npm package (mcp-remote@latest) and connect to an external MCP gateway (gateway.pipeworx.io). That can result in arbitrary code execution and network traffic to an endpoint outside the described API (numbersapi.com). The SKILL.md does not describe what data will be sent to the gateway or whether the remote code is sandboxed.
Install Mechanism
There is no formal install spec, but the connect block relies on `npx` to fetch `mcp-remote@latest` from the public npm registry at runtime. Using `@latest` means arbitrary new code can be executed later; runtime download/exec from an external registry is a higher-risk install mechanism and is not made explicit in the metadata.
Credentials
The skill declares no environment variables, credentials, or config paths, and its stated purpose does not require secrets. The lack of declared credentials is proportionate, but the SKILL.md still initiates a network connection to an external gateway which could receive context or data.
Persistence & Privilege
always is false and autonomous invocation is allowed (the platform default). The skill does not request permanent presence or system-wide configuration changes. No additional persistence or elevated privileges are declared.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install pipeworx-numbersapi - After installation, invoke the skill by name or use
/pipeworx-numbersapi - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release
Metadata
Frequently Asked Questions
What is Pipeworx numbersapi?
NumbersAPI MCP — wraps numbersapi.com (free, no auth). It is an AI Agent Skill for Claude Code / OpenClaw, with 66 downloads so far.
How do I install Pipeworx numbersapi?
Run "/install pipeworx-numbersapi" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Pipeworx numbersapi free?
Yes, Pipeworx numbersapi is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Pipeworx numbersapi support?
Pipeworx numbersapi is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Pipeworx numbersapi?
It is built and maintained by Bruce Gutman (@b-gutman); the current version is v1.0.0.
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