Free Tools for OpenClaw Builders
A collection of free calculators, generators, and testers to help you build, deploy, and optimize your AI agents. No signup required.
How to Use These Tools
Three simple steps to get started
Choose a Tool
Browse our collection of 15+ tools organized by category. Each tool is designed for a specific OpenClaw workflow.
Enter Your Data
Fill in the required information. AI-powered tools use free OpenRouter models by default, or bring your own API key.
Export Results
Get your results instantly. Export as Markdown, JSON, or copy to clipboard. Use directly in your OpenClaw projects.
All Tools
Browse by category or view all
API Cost Calculator
Estimate daily and monthly API costs for your OpenClaw deployment. Supports all major models including GPT-4o, Claude, and Gemini.
Token Counter
Count tokens in your prompts and estimate costs before sending. Supports multiple tokenizers.
Agent Name Generator
Generate memorable, thematic names for your AI agents. Local generation for instant results or AI mode for unique creativity.
Identity MD Generator
Create complete IDENTITY.md files for your agents. Define personality, tone, and boundaries.
Persona Generator
AI-powered detailed persona creation. Generate realistic agent personalities with backstories, traits, and communication styles.
API Endpoint Tester
Test OpenClaw gateway endpoints. Debug sessions, models, cron jobs, and memory queries with an intuitive interface.
Webhook Tester
Test and debug webhooks for your OpenClaw integrations. Verify signatures, inspect payloads, and simulate events.
A2A Message Sender
Send Agent-to-Agent messages for testing workflows. Debug multi-agent orchestration and message routing.
MCP Server Tester
Test MCP (Model Context Protocol) server connections. Send JSON-RPC requests and inspect responses.
JSON Schema Validator
Validate OpenClaw configuration files and message payloads. Catch errors before deployment.
Cron Expression Builder
Build and test cron expressions for scheduled tasks. Visual builder with natural language descriptions.
Regex Tester
Test regex patterns for agent parsing and extraction. Real-time matching with capture group display.
Base64 / Encoding Converter
Encode and decode data for agent workflows. Base64, URL encoding, HTML entities, hex, and binary.
Diff Viewer
Compare text and configuration versions. Side-by-side or inline diff with syntax highlighting.
Environment Variable Formatter
Format and validate .env files. Convert between .env, JSON, YAML, Docker, and shell formats.
Generate with AI
Our AI-powered tools use free OpenRouter models by default. Want better results? Add your own API key and choose from premium models like GPT-4o or Claude 3.5 Sonnet.
Frequently Asked Questions
Common questions about our tools
Are these tools free?
Yes, all tools are completely free to use. AI-powered tools use free OpenRouter models by default. You can optionally add your own API key for premium models.
Do I need an OpenClaw account?
No, all tools work without any account. However, tools like the API Endpoint Tester need your OpenClaw gateway URL to test against.
Can I export the results?
Absolutely. Every tool supports exporting results as Markdown, JSON, or plain text. Use them directly in your OpenClaw projects.
Are my inputs stored?
No. All processing happens in your browser. We don't store or log any of your inputs or generated content. Your data stays private.
Missing a Tool?
We're constantly adding new tools based on community feedback. Join our Discord to suggest new tools or vote on upcoming features.