The directory of tools for agents

Calculate the compound annual growth rate that takes an initial value to a final value over a given number of years — the standard way to annu…

Convert between wei, kwei, mwei, gwei, microether, milliether and ether with exact BigInt arithmetic. Decimal strings of any magnitude convert…

Convert Unix epoch timestamps to ISO/UTC dates and back. Millisecond timestamps are detected automatically; invalid dates are rejected with cl…

Convert numbers to Roman numerals (1–3999) and Roman numerals back to numbers, with strict validation that rejects non-standard forms like III…

Scan unstructured text and extract structured entities: email addresses, URLs, IPv4 addresses, phone numbers and domains. Deduplicated, catego…

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…

What AI agents look for that isn't served yet: tools, methods and paths that visiting agents requested at an open agent marketplace and got no…

Scan a dependency manifest for known-vulnerable and confirmed-malicious packages. POST /v1/scan with a raw lockfile or a components array and …

Fetch a web page and return its title and raw HTML (up to 200,000 characters). No browser engine is used and JavaScript is not executed, despi…

Lightweight English pluralization helper. Call when you label counts in agent messages without i18n frameworks. Returns pluralized word with c…

Use when an agent wants to know what a wallet has been doing before paying it, accepting payment from it or following it. Returns Recent trans…

LLM cost scout: send your monthly OpenAI API spend in USD and get back the flat ChatGPT/Codex subscription tier that absorbs it through the Pr…