Openclaw Skills provides a free REST API reference for fast, secure integration across AI/ML, payments, and communication services.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install api-free
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install api-free using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is REST API Reference Free Edition?
Openclaw Skills is a developer-focused REST API reference handbook that helps AI agents and engineers quickly identify authentication patterns, endpoint examples, basic curl commands, and common error handling for core third-party services.
It is designed as a documentation-only integration aid for AI/ML, payments, and communication APIs, with a clear boundary between free coverage and paid advanced capabilities like rate limiting strategy, pagination modes, webhook signature verification, and multi-account credential naming.
REST API Reference Free Edition Use Cases
- Looking up REST API authentication patterns for AI/ML, payments, or communication services
- Generating quick curl examples for endpoint testing and integration
- Reviewing Content-Type requirements before sending POST, PUT, or PATCH requests
- Debugging common API issues such as 401, 429, 504, or malformed requests
- Finding the correct free-version service index file for a target provider
- Using Openclaw Skills inside an AI agent workflow to speed up API integration research
- Preparing a team-facing integration guide for common third-party APIs
How REST API Reference Free Edition Works
- Identify the target service category from the request, such as AI/ML, payments, or communication.
- Locate the matching documentation file in the free service index, for example
apis/ai-ml.md,apis/payments.md, orapis/communication.md. - Read the file index with
headorsed, then jump to the relevant service section using line numbers. - Extract the key integration details: authentication method, endpoint path, HTTP method, required parameters, and common pitfalls.
- Use the provided curl example and error guidance to construct a correct request or troubleshoot the integration.
- If the request requires advanced capabilities such as pagination, webhook signatures, or rate limit strategy, upgrade to access the paid documentation set.
REST API Reference Free Edition Setup
- Ensure your environment supports the required runtime and tooling.
- Install the Python dependencies used by the documentation workflow.
- Keep API keys in environment variables, not in URLs or source files.
- Use the skill from an AI agent conversation by supplying a service name, endpoint, and method.
pip install requests markdown sktool skskill
# Example: set secrets safely
export OPENAI_API_KEY="your-key-here"
export STRIPE_API_KEY="your-key-here"
# Example: inspect a documentation file
head -n 40 apis/ai-ml.md
sed -n '1,120p' apis/payments.md
Notes:
- The skill is documentation-only and does not execute user API requests.
- Compatible with Windows, macOS, and Linux.
- Python 3.6+ is required for the documented workflow.
REST API Reference Free Edition Data Schema & Taxonomy
Openclaw Skills organizes its content as a documentation index plus service-specific markdown files.
| Field / Artifact | Type | Purpose | Notes |
|---|---|---|---|
slug |
string | Stable skill identifier | api-free |
name |
string | Internal skill name | api-free |
displayName |
string | Human-readable title | REST API reference free edition |
summary |
string | Short skill overview | Covers AI/ML, payments, communication |
tags |
array | Search and classification metadata | Includes API, bearer, content-type |
tools |
array | Allowed agent actions | read, exec, write |
apis/ai-ml.md |
markdown file | AI/ML service index | OpenAI, Anthropic, Cohere, Groq, Mistral |
apis/payments.md |
markdown file | Payments service index | Stripe, PayPal, Square, Plaid |
apis/communication.md |
markdown file | Communication service index | Twilio, SendGrid, Slack, Discord, Telegram |
Typical section taxonomy inside service docs:
- Authentication mode: API key, Bearer token, OAuth token refresh
- Endpoint reference: path, HTTP method, and request shape
- Request rules:
Content-Type: application/jsonfor write operations - Error guidance: 401, 429, 504, and network failure remediation
- Example payloads: curl snippets and JSON request/response examples
Free edition boundary:
- Core coverage: 3 service families
- Paid-only coverage: pagination, webhook signatures, rate-limit strategy, idempotency, multi-account credential naming, and full 16-category reference set
REST API Reference Free Edition Advanced Features
- Openclaw Skills supports agent-assisted service lookup, reducing manual API document searching.
- Provides ready-to-use curl examples for fast integration scaffolding.
- Includes authentication guidance for API keys, Bearer tokens, and OAuth refresh flows.
- Adds common error diagnostics for faster troubleshooting of bad requests and expired tokens.
- Clearly separates free core coverage from paid advanced features, making upgrade paths explicit.
- Works across Windows, macOS, and Linux in documentation-driven workflows.
- Designed for AI agent consumption, with structured input/output examples that simplify automation.
SKILL.md
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