# Internet, AI & productivity

> A network of 8 focused, deterministic tools. Every tool has a human page, a JSON API, an OpenAPI description and an MCP tool that all return the same result (inputs, result, units, assumptions, sources, timestamps).

## Machine interfaces
- Tool catalog (JSON): https://internet.usefulweb.site/api/v1/tools
- OpenAPI (all tools): https://internet.usefulweb.site/openapi.json
- MCP server (all tools + workflows): https://internet.usefulweb.site/mcp
- Pick a tool for a natural-language request: POST https://internet.usefulweb.site/api/v1/tools/prompt-to-tool-router/calculate {"request": "..."}

## Tools
- [AI Answer Verifier](https://aianswerverifier.usefulweb.site/): Split an AI answer into claims and see which ones your sources actually support. API: POST https://internet.usefulweb.site/api/v1/tools/ai-answer-verifier/calculate
- [Error Message Translator](https://errormessagetranslator.usefulweb.site/): Paste a technical error and get the plain-English cause and troubleshooting steps. API: POST https://internet.usefulweb.site/api/v1/tools/error-message-translator/calculate
- [File Format Doctor](https://fileformatdoctor.usefulweb.site/): Find out what a file really is from its bytes, why it will not open and how to convert it. API: POST https://internet.usefulweb.site/api/v1/tools/file-format-doctor/calculate
- [Privacy Policy Decoder](https://privacypolicydecoder.usefulweb.site/): What a privacy policy says it collects, shares, sells and keeps — with quoted evidence. API: POST https://internet.usefulweb.site/api/v1/tools/privacy-policy-decoder/calculate
- [Prompt-to-Tool Router](https://prompttotoolrouter.usefulweb.site/): Describe your problem in plain words and get the right tools and order to use them. API: POST https://internet.usefulweb.site/api/v1/tools/prompt-to-tool-router/calculate
- [Scam Signal Checker](https://scamsignalchecker.usefulweb.site/): Check a message or link for common scam and phishing warning signs — without clicking. API: POST https://internet.usefulweb.site/api/v1/tools/scam-signal-checker/calculate
- [Screenshot to Steps](https://screenshottosteps.usefulweb.site/): Turn a screenshot of an app or website into numbered steps for what you want to do. API: POST https://internet.usefulweb.site/api/v1/tools/screenshot-to-steps/calculate
- [Website Change Explainer](https://websitechangeexplainer.usefulweb.site/): Compare two versions of a page and see which changes matter: prices, terms, dates, links. API: POST https://internet.usefulweb.site/api/v1/tools/website-change-explainer/calculate

## Workflows