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/crypto/wei-eth-converter$0.002Convert between wei, kwei, mwei, gwei, microether, milliether and ether with exact BigInt arithmetic. Decimal strings of any magnitude convert without floating-point error. Use this when an agent needs to exact Ethereum unit conversion — no float errors. On x402 Bazaar
• GET/dev/base64-encode$0.002Encode text to base64 or decode base64 back to text. Full UTF-8 support including emoji and non-Latin scripts. Use this when an agent needs to uTF-8 safe base64 in both directions. On x402 Bazaar
• GET/calculators/fuel-cost-calculator$0.002Calculate the liters of fuel a trip needs and its total cost from distance, consumption (L/100 km) and price per liter — with optional cost splitting between passengers. Use this when an agent needs to trip fuel and cost, splitable between people. On x402 Bazaar
• GET/calculators/reading-time-calculator$0.002Estimate reading time from a word count at any reading speed. Defaults to 200 words per minute — the typical silent-reading speed for adults. Use this when an agent needs to how long a text takes to read, by word count. On x402 Bazaar
• GET/live/business-days$0.003Count 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. On x402 Bazaar
• GET/converters/length-converter$0.002Convert between metric and imperial length units: kilometers, meters, centimeters, millimeters, micrometers, nanometers, miles, yards, feet, inches and nautical miles. Use this when an agent needs to metric and imperial distance units, instantly. On x402 Bazaar
• GET/crypto/tx-explain$0.015Explain what an EVM transaction would actually do: decodes the calldata (ERC-20 transfers/approvals via known ABIs, unknown selectors via the 4byte directory) and simulates the call against live chain state to report the outcome — including unlimited-approval warnings — without sending anything. Use this when an agent needs to decode and simulate a transaction — before signing it. On x402 Bazaar
• GET/calculators/tip-calculator$0.002Calculate the tip for any bill, the grand total, and how much each person pays when splitting. Defaults to a 15% tip. Use this when an agent needs to tip amount, total and per-person split. On x402 Bazaar
• GET/live/qr-code$0.003Generate a QR code for any text, URL or crypto address: returns ready-to-embed SVG markup and a data URI, with configurable size and error-correction level. Use this when an agent needs to any text or URL as a QR code (SVG + PNG data URI). On x402 Bazaar
• GET/security/mx-lookup—No price listedQuery the MX records for any domain via DNS-over-HTTPS: every mail exchanger with its priority, sorted so the primary (lowest number) comes first. The definitive check for 'can this domain receive email' before sending anything. Use this when an agent needs to mail exchangers by priority, live from DNS.
• GET/live/holidays$0.005List 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. On x402 Bazaar
• GET/dev/jwt-decoder$0.003Decode 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. On x402 Bazaar
• GET/calculators/compound-interest-calculator$0.003Project the future value of a deposit with compound interest: choose annual, semi-annual, quarterly, monthly, weekly or daily compounding and see total interest earned. Use this when an agent needs to future value with any compounding frequency. On x402 Bazaar
• GET/finance/margin-calculator$0.002Calculate 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. On x402 Bazaar
• GET/crypto/wallet-snapshot$0.01One-call on-chain profile of any Ethereum or Base wallet via Blockscout: native balance, transaction and transfer counts, activity recency, top token holdings, and most frequent recent counterparties — with fresh-wallet and high-volume flags. The 'who is this address?' conclusion, not raw RPC data. Use this when an agent needs to on-chain wallet profile: balance, activity, tokens, counterparties. On x402 Bazaar
• GET/converters/unix-timestamp-converter$0.002Convert Unix epoch timestamps to ISO/UTC dates and back. Millisecond timestamps are detected automatically; invalid dates are rejected with clear errors. Use this when an agent needs to epoch seconds ↔ human dates, both directions. On x402 Bazaar
• GET/media/color-convert—No price listedConvert any color between hex, RGB and HSL with WCAG relative luminance — exact integer/channel math, no drift. Accepts #abc, #aabbcc, rgb() and hsl() input and reports every representation plus a light/dark verdict. Use this when an agent needs to hex ↔ RGB ↔ HSL + luminance, exact.
• GET/nft/wallet-nfts$0.005Look up an address's NFT portfolio across collections: each collection held, quantity owned, sorted by size. The enrichment endpoint for agents profiling wallets — pairs with wallet-snapshot for the full picture. Use this when an agent needs to every NFT collection a wallet holds, in one call. On x402 Bazaar
• GET/security/cvss-calc—No price listedCompute a CVSS 3.1 base score from its vector string using the exact FIRST specification (weights, scope handling, and the rounding function). Pairs with cve-lookup: paste any vector and get the score, severity band, and metric breakdown. Use this when an agent needs to vector string → exact base score.
• GET/dev/page-verify$0.005Verify 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. On x402 Bazaar
• GET/dev/archive-lookup$0.005Query the Internet Archive's Wayback index for any URL: when it was first archived, the most recent snapshot, how many years it spans, and recent capture dates. Useful for fact-checking page history, finding deleted content and due-diligence. Use this when an agent needs to how the Internet Archive remembers a URL. On x402 Bazaar
• GET/crypto/yield-pools—No price listedLive lending/liquidity yields from DefiLlama: top pools by APY filtered by chain, stablecoin-only pairs, minimum TVL and a sane-APY cap that filters out runaway incentive numbers. Returns project, pair, chain, APY and TVL — the discovery step before reward-rate math. Use this when an agent needs to top APY pools filtered by chain, TVL and stability.
• GET/dev/semver-checker$0.002Parse 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. On x402 Bazaar
• GET/security/whois-lookup$0.003Full registration record for a domain via RDAP (the modern WHOIS): registrar, creation/expiration/last-updated dates with days-to-expiry, nameservers, EPP statuses and DNSSEC. Straight from the authoritative registry — the data agents should cite for domain diligence. Use this when an agent needs to registrar, dates, nameservers — registry data. On x402 Bazaar
• GET/dev/yaml-convert$0.002Convert 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. On x402 Bazaar

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