Every agent-payable API.

Query the Internet Archive Wayback Machine to check if a URL has ever been archived, get the closest snapshot to a given date, retrieve the most recent capture, and return archival history stats — so agents can access historical web content, verify past content claims, and recover deleted pages.

Parse and validate any phone number in any format, identify its country and line type (mobile/landline/VOIP/toll-free/premium for NANP + UK numbers; other countries return line_type unknown), and return all standard format variants (E.164, international, national) — catches fictional/unassigned NANP numbers (555 area code, 555-01XX range) so agents can validate contacts and normalize phone data without a paid telecom API.

Check an IP address against 15 major DNS blacklists (Spamhaus, Barracuda, SORBS, etc.) simultaneously — returns which lists it appears on, a reputation score, and a threat classification so agents can make block/allow decisions instantly.

Generate common typo and look-alike variations of a domain and check which are already registered — catches character swaps, omissions, additions, homoglyphs, and alternate TLDs so agents can detect typosquatting and brand-impersonation domains targeting a company.

Fetch and parse any XML sitemap or sitemap index file — returns URLs with their priority, change frequency, and last modified date, follows sitemap indexes one level deep (first 3 child sitemaps), and auto-discovers the sitemap from robots.txt or common paths when given a bare domain — so agents can enumerate site content for crawling, indexing, and SEO analysis.

Check username availability across 20+ social platforms and developer sites simultaneously — returns which platforms have a profile registered under that handle so agents can find people, verify identities, scout brand handles, or check name availability before registration.

Convert any amount between 32 fiat currencies (live European Central Bank rates) and major cryptocurrencies (BTC, ETH, USDC, SOL, ICP, CELO and more, live Coinbase spot rates) — fiat↔fiat, crypto↔fiat, and crypto↔crypto all work. Returns converted amount, exchange rate, inverse rate, rate date, and rate source so agents can price and invoice across fiat and crypto without a paid forex API.

Fetch a URL and detect the full technology stack from HTTP response headers, HTML meta tags, cookies, and script patterns — returns CMS, framework, CDN, server, analytics, and security tool detections so agents can profile any web target without a browser.

Fetches a URL and evaluates 10 security-critical response headers (CSP, HSTS, X-Content-Type-Options, X-Frame-Options, Referrer-Policy, Permissions-Policy, X-XSS-Protection, CORP, COEP, COOP), detects anti-patterns, and returns an overall security grade (A–F).

Check if a domain name is available for registration by querying RDAP and DNS — pass a bare name (e.g. mybrand) to sweep it across 10 popular TLDs simultaneously, or a full domain (e.g. mybrand.com) to check that single domain — returns registration status, expiry date if registered, and available/taken TLD lists so agents can find the best domain for a brand or project.

Fetch metadata for any npm package — download counts, latest version, version count, dependency/devDependency counts, maintainers, repository URL, license, and a health score based on maintenance signals — so agents can evaluate dependencies, audit package ecosystems, and assess supply chain risk. (Returns counts, not the full version/dependency lists.)

Decode and inspect any JWT token — extracts header algorithm, payload claims, expiry status, issued-at time, audience, issuer, and subject without requiring the secret — so agents can debug auth issues, check token expiry, and extract identity claims from tokens in pipelines.

DNS lookup / nslookup / dig API — resolve the common DNS record types (A, AAAA, MX, TXT, NS, CNAME, SOA, PTR) for a domain. Parses SPF/DMARC from TXT plus DKIM at the default._domainkey selector, and cross-checks A records across Google/Cloudflare/Quad9 resolvers for propagation consistency.

Reference registration/renewal/transfer pricing from a curated table of ~21 common TLDs — Mode A: price one TLD (typical register/renew/transfer cost + renewal-markup %); Mode B: price a name across all covered TLDs, sorted cheapest-first with cheapest/cheapest_premium picks. Reference prices, not live per-registrar quotes — for budgeting and spotting predatory renewal markups; TLDs outside the table return pricing:null.

Query the crt.sh certificate transparency log database to enumerate all SSL certificates ever issued for a domain — returns subdomains discovered, certificate issuers, validity periods, and a risk score flagging wildcard certs, expiring certs, and suspicious issuance patterns.

Resolves an IP address or domain to its Autonomous System Number (ASN), network owner, country, and hosting/cloud classification — agents get structured network ownership context plus a trust score to assess infrastructure risk.

One call combines domain availability, heuristic value appraisal, and TLD pricing into a single acquisition brief — tells an agent whether a name is available, what it's worth, and what it costs across TLDs, concurrently and with graceful partial-failure handling.

Estimate the market value tier of a domain name using transparent heuristics — length, TLD premium, dictionary-word presence, pronounceability, keyword value, and numeric/hyphen penalties — returns a value tier and 0-100 quality score so agents can triage domain portfolios and prioritize acquisitions without a paid appraisal service.

Query a domain's DNS record across 10 geographically distributed public resolvers simultaneously — returns what each resolver sees, whether results are consistent, propagation percentage, and a readiness score so agents can confirm DNS changes have fully propagated globally.

Check if a password has appeared in known data breaches using the HaveIBeenPwned Pwned Passwords API with k-anonymity — the full password is never transmitted, only a 5-character SHA-1 hash prefix — returns breach count and a risk classification so agents can enforce password policies without storing or exposing credentials.

Raw news articles from the last 14 days for a KRX-listed company. Returns title, summary, publisher, published date, and article URL. Use when you need the source articles rather than an analyzed summary.

Next transaction nonce for any Ethereum wallet via eth_getTransactionCount - how many txs it has sent

Octodamus — AI oracle for crypto and tokenized NYSE markets. BUY/SELL/HOLD signals, Polymarket edges, Fear & Greed, macro regime. Ed25519 signed.

Smart-money bundle for any US-listed company by ticker, in ONE call: SEC Form 4 insider activity (purchases vs sales — SEC codes P/S, net purchase-sale balance, who filed and their roles) PLUS trailing-twelve-month fundamentals (revenue + YoY, net income + YoY, diluted EPS) from XBRL filings. 4/A-amended insider windows withheld once detected (~1h lag): unpaid 503. Smart money, fundamentals. Public-domain SEC EDGAR. $0.006 per call.

Search DEX pools across Base, Ethereum, Solana, Polygon, BSC, Arbitrum, Optimism and Avalanche by token symbol, name, or contract address. Returns pool address, DEX, price USD, 24h volume, liquidity (TVL), FDV, 24h price change and 24h txns as flat JSON numbers — no nested joins. Pool search, pool finder, DEX pools, liquidity pools, onchain pool lookup. $0.001 per call.

Resolve any domain in one call: A/AAAA, MX, NS, CNAME, SOA and TXT records, plus parsed email-auth posture — SPF policy, DMARC policy, and detected DKIM selectors. A drop-in nslookup/dig replacement for agents, resolved over DNS-over-HTTPS (DoH) with redundant resolvers and automatic failover. Keyless, pay-per-call, structured JSON.

Is USDC/USDT/DAI holding its $1 peg, and is stablecoin supply growing or shrinking (risk-on vs risk-off)? Live peg deviation (bps), circulating supply + 1d/7d/30d flow, market dominance and chain spread for the top 30 USD stablecoins, plus downside depeg alerts for any coin trading >0.5% below peg. Sourced from DefiLlama (public). Refreshed hourly.

Best-available stablecoin yield deposit options: the highest-APY lending venue per stablecoin (USDC / USDT / DAI …), read directly on-chain from Aave / Morpho / Compound across supported chains, with APY basis, liquidity profile, reward-completeness and TVL. Returns the best available options (not yet personalized to a specific wallet's holdings).

Live DEX token price in USD by ticker symbol or contract address across Base, Ethereum, Solana, Polygon, BSC, Arbitrum, Optimism and Avalanche (bare 0x defaults to Base, else network:address). Symbols resolve to the canonical top-market-cap asset — squat-proof. Flat JSON: price, 24h change, volume, market cap, FDV, liquidity — echoes the matched deployment. Token price, crypto price, DEX price. $0.001 per call.

Registration data for any domain, straight from authoritative RDAP registries (the structured WHOIS successor): registrar, ICANN/EPP domain status codes, creation, last-updated and expiration dates, authoritative nameservers, and DNSSEC delegation. The fast, license-clean way for an agent to vet a domain, sender, or counterparty. Keyless, structured JSON, pay-per-call.

Trade and transaction history for a user's Otto AI Safe account — swaps, bridges, deposits, withdrawals with timestamps and explorer links.

DeFi yield farming markets with live APYs across Aave V3 and Morpho on Base, Ethereum, and other major chains. Find the best stablecoin yield (USDC) and ETH yield for idle capital: returns supply APY, TVL, and vault/market addresses per token, filterable by protocol, chain, or token symbol. Compare DeFi yield rates across lending markets and vaults before depositing.

Hyperliquid perpetuals market data: live mark/oracle price, funding rate, open interest, max leverage, and size specs for any tradable asset.

Is anything breaking right now? Composite crypto market-stress digest: a 0-100 score (low/moderate/elevated/high) blended from GLOBAL USD-stablecoin depeg health (DefiLlama) and BASE on-chain DEX exit-liquidity, with a per-leg breakdown and an AI risk line. Covers stablecoin systemic risk + Base liquidity microstructure (NOT derivatives or sentiment). Both legs required for a score. Hourly. $0.002 per call.

Multi-chain portfolio snapshot with token balances and yield positions for a user's Otto AI Safe accounts across Base, Ethereum, Arbitrum, Polygon, BSC, Avalanche, and Solana.

Real-time crypto market news with sentiment analysis and top headlines ranked by importance.

Hyperliquid perpetual trading account snapshot with open positions, margin, collateral, and active trigger orders (TP/SL/limit).

Paddock niche gap analysis — one-time query

Paid x402 endpoint for newly created prediction-market data and emerging betting topics.

Paid x402 endpoint for newly created prediction-market data and emerging betting topics.

Profile enrichment from LinkedIn URL

Evaluate a US property address for parcel match, FEMA flood zone, flood proximity, taxing entities, school district, permit history, zoning/land-use context, insurance red flags, due-diligence risk score, quality score, recommended next steps, and official source links.

Latest PulseChain block number and timestamp.

AI vision: describe any public image, including visible text (OCR-lite).

Word, sentence, and paragraph counts, reading time, and readability score for text.

Quick ZK Auth v1.0.1 — Semaphore ZK wallet ownership on Base plus USDC balance attestation at snapshot block (not ZK-hidden balance in v1). ERC-8004 bundles with x402 payment binding.

A user's profile info: id, name, bio, location, follower/following counts, verification. Example: GET /api/jack/info

$0.0003/MP. Adjust brightness, saturation, hue, lightness — or negate and tint — in one call. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny

$0.0005/MB. Mix multiple audio tracks down to one (amix), optional loudness normalize — voiceover + music in one call. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny

$0.0002/call. Convert colors between hex, RGB, and HSL — exact values back as JSON. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny