AgentsToolsHub

Reference database of HTTP response status codes with phrase, category and explanation. Look up a specific code or list a whole category (1xx–5xx). Use this when an agent needs to look up any HTTP status code's meaning. x402 price $0.002/call (USDC, eip155:8453).

Generate a valid RFC 5545 iCalendar file from JSON events: proper CRLF line endings, text escaping, line folding at 75 octets and a required DTSTAMP. The output imports cleanly into Google Calendar, Outlook and Apple Calendar. Use this when an agent needs to jSON events → valid .ics calendar file. x402 price $0.003/call (USDC, eip155:8453).

Parse iCalendar (.ics) content — meeting invites, conference calendars, exports from Google/Outlook — into structured event JSON: title, start/end, location, organizer and description. Use this when an agent needs to turn .ics calendar files into clean event JSON. x402 price $0.003/call (USDC, eip155:8453).

Convert ISO 8601 durations (P1DT2H30M) to total seconds and back — including weeks — with a component breakdown. The unambiguous duration math agents should use for retries, TTLs and scheduling instead of mental arithmetic. Use this when an agent needs to durations ↔ seconds, exact in both directions. x402 price $0.002/call (USDC, eip155:8453).

Validate JSON with precise error messages, pretty-print it with any indent, and inspect its top-level type and element counts. Use this when an agent needs to validate, pretty-print and inspect JSON. x402 price $0.002/call (USDC, eip155:8453).

Repairs broken JSON: trailing commas, single quotes, unquoted keys, Python literals (True/False/None), NaN, comments, smart quotes and truncated documents. Built for the most common agentic failure mode — parsing slightly-wrong JSON from an LLM or a human. Use this when an agent needs to fix LLM-mangled, truncated or sloppy JSON. x402 price $0.002/call (USDC, eip155:8453).

Validate a JSON document against a JSON Schema (draft 2020-12) with precise error paths — the exact check agents need before trusting structured output. Returns valid/invalid plus every violation with its JSON Pointer location and message. Use this when an agent needs to validate JSON against a draft 2020-12 schema. x402 price $0.003/call (USDC, eip155:8453).

Decode a JSON Web Token's header and payload to readable JSON. Pure decoding: signatures are NOT verified and no secret is needed. Accepts standard and URL-safe base64 with or without padding; claims like exp and iat are rendered as dates. Use this when an agent needs to decode header and payload — no verification. x402 price $0.003/call (USDC, eip155:8453).

Calculate the API cost of an LLM call: input and output tokens × published per-million prices for 15 current models (OpenAI, Anthropic, Google, DeepSeek, xAI, Meta). Batch multiplier included for monthly estimates. Use this when an agent needs to tokens × current per-model prices = USD. x402 price $0.002/call (USDC, eip155:8453).

Convert Markdown to HTML with GitHub-flavored markdown support (tables, task lists, strikethrough, autolinks). Deterministic — the same markdown always yields byte-identical HTML, unlike LLM-approximated conversions. Use this when an agent needs to gFM markdown → clean HTML, exact output. x402 price $0.002/call (USDC, eip155:8453).

Look up MIME content types by type substring or file extension, or list a category — covering text, application, image, audio, video, font and multipart types used in web APIs. Use this when an agent needs to content-Type lookup by type or file extension. x402 price $0.002/call (USDC, eip155:8453).

Parse natural-language date and time expressions — "in two weeks", "next friday at 3pm", "dec 25th" — into exact ISO 8601 dates. Deterministic parsing (no LLM guessing); relative expressions resolve against a reference moment you control. Use this when an agent needs to "next friday 3pm" → exact ISO dates. x402 price $0.002/call (USDC, eip155:8453).

Look up any package on the public npm registry: latest version, description, license, homepage, and publish dates for the first and most recent release. Agents use this to check dependencies before installing or to detect newly published versions. Use this when an agent needs to latest version, dates and metadata from the npm registry. x402 price $0.002/call (USDC, eip155:8453).

Convert integers between any bases from 2 to 36 — binary, octal, decimal, hexadecimal and beyond — with BigInt precision (no limit on magnitude). Use this when an agent needs to binary, octal, decimal, hex — any base 2–36. x402 price $0.002/call (USDC, eip155:8453).

Generate a 1200×630 social-card PNG from a title and description — the image size every link-preview crawler expects. Rendered server-side with satori and returned as a base64 data URI, ready to embed in meta tags or download. Use this when an agent needs to social card PNG generated from title + description. x402 price $0.005/call (USDC, eip155:8453).

Verify a claim about a web page's content: fetches the page (SSRF-guarded) and reports whether the expected text appears, with the surrounding excerpt as evidence. The deterministic way for an agent to confirm 'the site says X' before acting on it. Use this when an agent needs to does this page actually say that? Checked, not guessed. x402 price $0.005/call (USDC, eip155:8453).

Fetch a PDF (by URL, SSRF-guarded) or accept it as base64 and extract all readable text with page count. Deterministic parsing — no language model, so nothing is invented. Text-based PDFs only; scanned images need OCR (not included). Use this when an agent needs to extract readable text from any PDF — agents can't read PDFs. x402 price $0.010/call (USDC, eip155:8453).

Compute readability metrics for a block of text: Flesch Reading Ease score, Flesch-Kincaid grade level, and word/sentence/syllable statistics. Deterministic formulas — useful for checking documentation, prompts and agent output clarity. Use this when an agent needs to flesch reading-ease and grade level for any text. x402 price $0.002/call (USDC, eip155:8453).

Test a regular expression against text and see every match: the matched substring, its index, and all capture groups. Deterministic — the same pattern and text always produce the same result, unlike LLM-simulated regex matching. Use this when an agent needs to pattern + text → every match, group and index. x402 price $0.002/call (USDC, eip155:8453).

Fetch a web page server-side (SSRF-guarded) and return every element matching a CSS selector as structured JSON: text content, attributes and HTML. Deterministic extraction for agents that need specific parts of a page without reading the whole document. Use this when an agent needs to fetch a page and extract elements matching a CSS selector. x402 price $0.005/call (USDC, eip155:8453).

Parse a semantic version into major/minor/patch/prerelease, test it against a SemVer range (^, ~, >=, *) and compare two versions with the exact upgrade class (major/minor/patch/prerelease). Deterministic — no approximating precedence rules from memory. Use this when an agent needs to parse, compare and range-test versions. x402 price $0.002/call (USDC, eip155:8453).

Extract every HTML table from a page (or raw HTML) as structured JSON: headers and rows kept intact. The deterministic answer to 'get the pricing table / comparison table / stats table from this page' — no vision model needed. Use this when an agent needs to hTML tables → structured JSON rows and columns. x402 price $0.010/call (USDC, eip155:8453).

Split text into retrieval-friendly chunks with a token budget and sentence-aware boundaries. Overlap between consecutive chunks preserves context across splits — the standard preparation step before embedding. Use this when an agent needs to rAG-ready chunks with token budgets and overlap. x402 price $0.005/call (USDC, eip155:8453).

Scan unstructured text and extract structured entities: email addresses, URLs, IPv4 addresses, phone numbers and domains. Deduplicated, categorized, machine-ready. Use this when an agent needs to pull emails, URLs, IPs, phones and domains from raw text. x402 price $0.005/call (USDC, eip155:8453).

Estimate how many tokens a text consumes for each major model family (GPT, Claude, Gemini, Llama, DeepSeek) using a character/word heuristic that is within ~10% of real BPE tokenizers — enough for context budgeting and cost math, with zero dependencies. Use this when an agent needs to approximate token counts per LLM family, ±10%. x402 price $0.002/call (USDC, eip155:8453).

Percent-encode text for safe inclusion in URLs and query strings, or decode percent-encoded text back. Uses the standard encodeURIComponent rules. Use this when an agent needs to percent-encoding for query strings and URLs. x402 price $0.002/call (USDC, eip155:8453).

Parse a URL into all its components: protocol, hostname, port, path segments, query parameters (as a clean object), hash and credentials. Exact — no guessing by eye. Use this when an agent needs to break any URL into protocol, host, path and params. x402 price $0.002/call (USDC, eip155:8453).

Fetch a web page server-side and convert it to clean markdown — headings, links, lists, tables and text, with scripts, styles and boilerplate stripped. The 'reader' pattern agents use to actually understand web pages. SSRF-guarded with redirects re-validated, 10s timeout, 1MB cap. Use this when an agent needs to fetch any page and get clean markdown an LLM can read. x402 price $0.010/call (USDC, eip155:8453).

Parse a User-Agent header into structured data: browser (name/version), rendering engine, operating system, and device type/vendor/model. Deterministic — the same string always parses identically. Use this when an agent needs to uA string → browser, engine, OS and device. x402 price $0.002/call (USDC, eip155:8453).

Generate cryptographically random UUIDv4s or time-sortable UUIDv7s from a real CSPRNG, and validate any UUID's format, version and variant bits. Use this when an agent needs to random v4, sortable v7, plus strict validation. x402 price $0.002/call (USDC, eip155:8453).

Convert YAML to JSON and JSON to YAML — the config-format bridge for CI files, Kubernetes manifests, docker-compose, agent configs and prompts. Parse errors are reported precisely; formatting is preserved via deterministic serialization. Use this when an agent needs to convert configs between YAML and JSON, both directions. x402 price $0.002/call (USDC, eip155:8453).

Full loan amortization: the exact monthly payment, a year-by-year principal/interest/balance table, total interest, and the effect of extra monthly payments — payoff months saved and interest saved. Deterministic mortgage math agents can quote line by line. Use this when an agent needs to full yearly schedule + extra-payment savings. x402 price $0.003/call (USDC, eip155:8453).

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 annualize returns. Use this when an agent needs to compound annual growth rate, time-normalized. x402 price $0.002/call (USDC, eip155:8453).

Validate an International Bank Account Number: country code, country-specific length and the ISO 7064 MOD 97-10 check digits — with the pretty-printed grouping returned when valid. Use this when an agent needs to structure, length and mod-97 checksum validation. x402 price $0.003/call (USDC, eip155:8453).

Calculate gross profit, profit margin (profit as % of price) and markup (profit as % of cost) from a unit cost and selling price — the two numbers people constantly mix up. Use this when an agent needs to profit margin vs markup, both computed. x402 price $0.002/call (USDC, eip155:8453).

European option pricing with the Black-Scholes-Merton model: exact price for calls and puts plus delta, gamma, theta, vega and rho, with dividend yield support. Deterministic closed-form math — the numbers agents should quote instead of hallucinating option values. Use this when an agent needs to black-Scholes price + all five Greeks. x402 price $0.003/call (USDC, eip155:8453).

Calculate return on investment: profit (or loss) and the percentage return relative to the initial amount invested. Use this when an agent needs to return on investment as a percentage. x402 price $0.002/call (USDC, eip155:8453).

Great-circle (haversine) distance between two latitude/longitude points in km, miles and nautical miles, plus initial bearing and the geographic midpoint. Deterministic spherical math on the IUGG mean Earth radius. Use this when an agent needs to great-circle distance and bearing between coordinates. x402 price $0.002/call (USDC, eip155:8453).

Validate any EU VAT number against VIES — the European Commission's live registry: validity, registered trader name and address by member state. The check every B2B invoice flow needs before applying the reverse charge. Use this when an agent needs to vIES-verified VAT numbers, live from the EU. x402 price $0.003/call (USDC, eip155:8453).

Where the sun is in the sky right now — or at any timestamp — for any coordinates: azimuth (compass bearing), elevation angle, cardinal direction, right ascension and declination, from the NOAA solar equations. Deterministic astronomy for shadow math, solar-panel orientation and photo planning. Use this when an agent needs to azimuth, altitude and cardinal direction, now or any time. x402 price $0.002/call (USDC, eip155:8453).

Compute sunrise, sunset, solar noon, civil dawn/dusk, golden hours and day length for any latitude/longitude and date — with the exact NOAA solar equations, accurate to about a minute. Answers agents repeatedly get wrong from memory. Use this when an agent needs to sun times, golden hour and day length for any place. x402 price $0.002/call (USDC, eip155:8453).

Live air quality by city or coordinates from Open-Meteo's CAMS models: US AQI and European AQI with PM2.5, PM10, ozone, NO2, SO2 and CO concentrations. No API key, cached 30 minutes — the air-quality check agents should run instead of recalling stale numbers. Use this when an agent needs to uS + European AQI, PM2.5 and ozone by city. x402 price $0.005/call (USDC, eip155:8453).

Count business days (Mon–Fri) between two dates, with weekend and holiday breakdown. Provide a country code and real public holidays (via Nager.Date) are excluded too. Use this when an agent needs to working days between dates, optionally minus public holidays. x402 price $0.003/call (USDC, eip155:8453).

Look up any English word: part-of-speech definitions with usage examples, IPA phonetics, pronunciation audio when available, and synonym/antonym lists. Live from the free Dictionary API — definitions agents can quote verbatim instead of inventing. Use this when an agent needs to definitions, phonetics and synonyms for a word. x402 price $0.003/call (USDC, eip155:8453).

Query live DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA) through Cloudflare's DNS-over-HTTPS resolver. Domain validation, email deliverability pre-checks and infrastructure discovery. Use this when an agent needs to real DNS records via Cloudflare DNS-over-HTTPS. x402 price $0.005/call (USDC, eip155:8453).

Recent earthquakes from USGS: filter by region (city or coordinates + radius), minimum magnitude and look-back window. Returns count, the largest event and a magnitude/place/depth table with links — live geophysical data agents cannot fabricate. Use this when an agent needs to recent quakes by region and magnitude from USGS. x402 price $0.005/call (USDC, eip155:8453).

Live foreign-exchange reference rates from the European Central Bank (via frankfurter.dev): a full rate table against any base currency, or cross-rate conversion of any amount. Refreshed every business day by the ECB, cached one hour. Use this when an agent needs to live ECB reference rates for 30 currencies. x402 price $0.005/call (USDC, eip155:8453).

Convert a place name into coordinates and location metadata via Open-Meteo's geocoding API: latitude, longitude, country, administrative region, timezone and population. The input every mapping/weather/travel agent needs first. Use this when an agent needs to city or place name → coordinates, country and timezone. x402 price $0.003/call (USDC, eip155:8453).

Live Hacker News data from the official Firebase API: top, new and best story lists with scores and comment counts, or the full detail of any item id. Fresh from the source — no scraping, cached a few minutes. Use this when an agent needs to top/new/best stories or any item, via the API. x402 price $0.005/call (USDC, eip155:8453).

List upcoming or full-year public holidays for any covered country via Nager.Date — names, dates and whether they're nationwide. Essential for scheduling agents. Use this when an agent needs to upcoming public holidays for ~110 countries. x402 price $0.005/call (USDC, eip155:8453).