AgentsToolsHub

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://agentstoolshub.com/api/v1

• GET/dev/case-converter$0.002Convert text between nine letter cases: UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE. camelCase boundaries are split automatically. Use this when an agent needs to camelCase, snake_case, kebab-case and more.
• GET/nft/holder-distribution$0.01Top holders of any NFT collection with exact quantities, individual and cumulative ownership percentages, and concentration statistics — the distribution picture agents need before valuing or recommending a collection. Use this when an agent needs to who owns the collection, and how concentrated is it.
• GET/dev/text-chunker$0.005Split 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.
• GET/geo-time/sunrise-sunset$0.002Compute 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.
• GET/dev/domain-availability$0.003Check whether a domain name is registered or available, via the official RDAP registry protocol (404 = available). For registered domains it also returns the registrar and creation/expiration dates — useful when an agent needs to name a product or verify how long a business has existed. Use this when an agent needs to is this domain taken? Registry answer, not a landing page.
• GET/dev/url-parser$0.002Parse 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.
• GET/dev/api-health-check$0.005Probe a GET endpoint several times and report status codes and latency statistics (min/avg/max). The cheap way for an agent to verify an API — for example one found on the x402 Bazaar — responds before spending real money calling it. Use this when an agent needs to status and latency stats — test an API before relying on it.
• GET/dev/ics-generate$0.003Generate 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.
• GET/security/password-strength$0.002Scores a password by information entropy: character-pool size, length, crack-time against an offline attack (10^10 guesses/s), and common-password/pattern detection. Evaluated in memory only, never stored or logged — the honest math behind 'is this password good?'. Use this when an agent needs to entropy bits + realistic crack-time estimate.
• GET/live/ip-lookup$0.005Geolocate any IPv4/IPv6 address (or the caller's own IP when omitted) via ipwho.is: country, region, city, coordinates, timezone, ASN/network owner and currency. Cached 24 hours per IP. Use this when an agent needs to where is an IP address? Country, city, ASN, timezone.
• GET/live/timezone-convert$0.002Convert a specific wall-clock time between any two IANA time zones with DST-aware, exact offsets — the scheduling-agent operation that LLMs get wrong constantly. Shows both ISO timestamps and the offsets applied. Use this when an agent needs to a specific time, converted between any two zones.
• GET/dev/cron-next-runs$0.002List the next N executions of a cron expression with exact timestamps — from now or from any reference datetime. Complements cron-describe (which explains what an expression means) with the concrete schedule agents need when scheduling their own work. Use this when an agent needs to exact upcoming executions for a cron expression.
• GET/finance/cagr-calculator$0.002Calculate 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.
• GET/calculators/loan-payment-calculator$0.003Calculate the fixed monthly payment for a loan from its principal, annual interest rate and term in years, plus total repaid and total interest (annuity formula). Use this when an agent needs to monthly payment, total cost and interest for any loan.
• GET/dev/useragent-parse$0.002Parse 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.
• GET/media/contrast-check$0.002Compute the WCAG 2.1 contrast ratio between a text and background color with pass/fail against every accessibility threshold: AA and AAA for normal and large text, plus the 3:1 UI-component minimum. Exact luminance math — the check every design system needs. Use this when an agent needs to contrast ratio + AA/AAA pass/fail.
• GET/crypto/apr-apy$0.002Convert APR (nominal annual rate) to APY (effective annual yield) for any compounding frequency including continuous — the exact DeFi math that decides whether a 10% APR pool really pays 10%. Deterministic closed-form, no approximations. Use this when an agent needs to nominal rate → effective yield, any compounding.
• GET/converters/area-converter$0.002Convert area units: square millimeters, centimeters, meters and kilometers, hectares, acres, square feet and square miles. Use this when an agent needs to square meters, feet, acres, hectares.
• GET/databases/countries$0.003Reference database of all 250 countries and territories: ISO 3166-1 codes, capitals, regions, population, area, currencies, languages, TLDs and calling codes. Look up a single country or list by region. Use this when an agent needs to 250 countries: codes, capitals, currencies, populations.
• GET/dev/url-reader$0.01Fetch 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.
• GET/security/totp-generator$0.003Generate the current TOTP two-factor code (RFC 6238) from a base32 secret — the same codes authenticator apps produce. Supports 6/8 digits, 30/60-second steps and SHA-1/256/512. Deterministic HMAC via Web Crypto; nothing is stored. Use this when an agent needs to rFC 6238 2FA codes from a base32 secret.
• GET/calculators/age-calculator$0.002Calculate a person's exact age in calendar years, months and days from their date of birth, plus total days lived. Reference date defaults to today (UTC). Use this when an agent needs to exact age in years, months and days.
• GET/dev/token-estimator$0.002Estimate 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%.

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