The directory of tools for agents

Generate cryptographically secure randomness: passwords with charset rules, hex keys of any byte length, and uniform random integers (rejectio…

Calculate X% of Y, what percent X is of Y, and the percent change between two values — with step-by-step working shown. Use this when an agent…

Reference database of all 250 countries and territories: ISO 3166-1 codes, capitals, regions, population, area, currencies, languages, TLDs an…

Reference database of HTTP response status codes with phrase, category and explanation. Look up a specific code or list a whole category (1xx–…

Convert between metric and imperial length units: kilometers, meters, centimeters, millimeters, micrometers, nanometers, miles, yards, feet, i…

Add VAT to a net amount or remove VAT from a gross amount. Standard VAT rates for 36 countries are built in, or override with any custom rate.…

Calculate the API cost of an LLM call: input and output tokens × published per-million prices for 15 current models (OpenAI, Anthropic, Google…

Calculate a person's exact age in calendar years, months and days from their date of birth, plus total days lived. Reference date defaults to …

Read a public HTML page as bounded Markdown with title, source URL and links. No JavaScript rendering, login or CAPTCHA bypass. Treat retrieve…

Trust infrastructure for AI agents. Look up a registered agent by the exact URL you are about to call and receive its reliability score, endpo…

Trust-minimized payment and verification rail for agent-to-agent work. Lock XRP or RLUSD in XRPL crypto-condition escrow, submit proof of work…

Quality verification for AI agents and MCP servers. 6-axis scoring, adversarial probes.