Every agent-payable API.

Who owns this NFT? Calls ownerOf(tokenId) on any ERC-721 contract on Ethereum, Base, Polygon, Arbitrum, or Optimism. Complements nft-holdings (which lists a WALLET's NFTs) - this answers by TOKEN. Keyless multi-endpoint failover. ?contract=0x…&tok...

Explorer-grade profile of any address on any Blockscout-hosted chain: native balance, contract vs EOA, verification status, token/NFT flags, ENS, public tags - bought per call from Blockscout's Pro API over x402, no API key anywhere in the chain. ...

All token balances for any address in one call, from Coinbase's indexed data API — ERC-20 + native on EVM, SPL on Solana; no per-token contract calls, no RPC wrangling. Networks: base, ethereum, base-sepolia, solana, solana-devnet. Symbols/decimal...

Mint a stateless captcha challenge to gate your OWN endpoint: returns a human prompt plus a salted sha256 answer hash you keep and verify later (sha256(salt + normalized answer) === answerHash) — no server state, no shared secret. Types: math (ari...

AgentCore-compatible Oblique seller router: paid ranked top-three shortlist with live health, prices, x402 and MPP rails, MCP schemas, qualified session handoff and receipt binding

Every tokenized US equity we track, ranked by off-hours peg risk: p95 and max deviation bps, market-open deviation as control, median liquidity. Dead pools are excluded rather than reported as perfect pegs.

Full market state in one call: prices, funding, fear/greed, positioning, liquidations

BTC spot price via Pyth

SOL spot price via Pyth

Peg deviation for a tokenized US equity on Solana: on-chain DEX price vs the underlying last real trade, in bps, with 24h stats split into market-open and off-hours. Sampled every 5 minutes by our own collector; this tape exists nowhere else.

1h/24h liquidation totals for the 5 majors (SOL/BTC/ETH/XRP/DOGE), long/short split, biggest print, per-exchange breakdown

SPL token metadata via Helius DAS

Fetch a public HTTPS page, extract compact agent-ready text, flag direct or obfuscated prompt injection, quarantine unsafe text, and return a signed receipt.

Agent-native encrypted key-value store, paid per request over x402 — no signup, no API key. The payer's wallet (or an ak_ account key) is the namespace; values are client-side encrypted. Write $0.005, read $0.003; prepay $1 = 10,000 credits at 1/10 the per-op price (POST /v1/credits/deposit). SDK: npm i @agentkv/client. Docs: https://agentx402.ai

Agent-native encrypted key-value store, paid per request over x402 — no signup, no API key. The payer's wallet (or an ak_ account key) is the namespace; values are client-side encrypted. Write $0.005, read $0.003; prepay $1 = 10,000 credits at 1/10 the per-op price (POST /v1/credits/deposit). SDK: npm i @agentkv/client. Docs: https://agentx402.ai

Agent-native encrypted key-value store, paid per request over x402 — no signup, no API key. The payer's wallet (or an ak_ account key) is the namespace; values are client-side encrypted. Write $0.005, read $0.003; prepay $1 = 10,000 credits at 1/10 the per-op price (POST /v1/credits/deposit). SDK: npm i @agentkv/client. Docs: https://agentx402.ai

Agent-native encrypted key-value store, paid per request over x402 — no signup, no API key. The payer's wallet (or an ak_ account key) is the namespace; values are client-side encrypted. Write $0.005, read $0.003; prepay $1 = 10,000 credits at 1/10 the per-op price (POST /v1/credits/deposit). SDK: npm i @agentkv/client. Docs: https://agentx402.ai

Agent-native encrypted key-value store, paid per request over x402 — no signup, no API key. The payer's wallet (or an ak_ account key) is the namespace; values are client-side encrypted. Write $0.005, read $0.003; prepay $1 = 10,000 credits at 1/10 the per-op price (POST /v1/credits/deposit). SDK: npm i @agentkv/client. Docs: https://agentx402.ai

Agent-native encrypted key-value store, paid per request over x402 — no signup, no API key. The payer's wallet (or an ak_ account key) is the namespace; values are client-side encrypted. Write $0.005, read $0.003; prepay $1 = 10,000 credits at 1/10 the per-op price (POST /v1/credits/deposit). SDK: npm i @agentkv/client. Docs: https://agentx402.ai

Agent-native encrypted key-value store, paid per request over x402 — no signup, no API key. The payer's wallet (or an ak_ account key) is the namespace; values are client-side encrypted. Write $0.005, read $0.003; prepay $1 = 10,000 credits at 1/10 the per-op price (POST /v1/credits/deposit). SDK: npm i @agentkv/client. Docs: https://agentx402.ai

Agent-native encrypted key-value store, paid per request over x402 — no signup, no API key. The payer's wallet (or an ak_ account key) is the namespace; values are client-side encrypted. Write $0.005, read $0.003; prepay $1 = 10,000 credits at 1/10 the per-op price (POST /v1/credits/deposit). SDK: npm i @agentkv/client. Docs: https://agentx402.ai

Agent-native encrypted key-value store, paid per request over x402 — no signup, no API key. The payer's wallet (or an ak_ account key) is the namespace; values are client-side encrypted. Write $0.005, read $0.003; prepay $1 = 10,000 credits at 1/10 the per-op price (POST /v1/credits/deposit). SDK: npm i @agentkv/client. Docs: https://agentx402.ai

Agent-native encrypted key-value store, paid per request over x402 — no signup, no API key. The payer's wallet (or an ak_ account key) is the namespace; values are client-side encrypted. Write $0.005, read $0.003; prepay $1 = 10,000 credits at 1/10 the per-op price (POST /v1/credits/deposit). SDK: npm i @agentkv/client. Docs: https://agentx402.ai

AgentNOMOS Agent-Card & A2A Readiness Check: Deterministic assessment of a public agent card or A2A discovery URL across eight dimensions — fetch/parse, identity, skills, protocol, auth, commercial, trust and privacy. Returns decision READY, WARN or NOT_READY, a readiness_level, findings with severity critical or warn, and machine-readable improvement suggestions. Automated assessment only — not a certification, not regulator-approved, not a penetration test.

Explicit pre-warm for AgentRAG over x402 — index URLs, same-origin crawl roots, or raw documents (text with no URL) ahead of querying, or force a refresh of already-indexed pages. The only way to index raw text directly. Ingest $0.005/page; prepay $1 = 10,000 credits, spent at 80% of the per-op price (20% off). Docs: https://agentx402.ai

Agent-native retrieval over x402 — send a query and, optionally, source URLs to index: get back ranked, cited chunks. Hybrid retrieval by default (dense vectors + BM25 keyword search, fused and reranked) beats vector-only search on exact tokens (error codes, API symbols, config keys). Pay-on-success: a query that matches nothing settles nothing. Ask $0.008; prepay $1 = 10,000 credits, spent at 80% of the per-op price (20% off). Docs: https://agentx402.ai

Verified-delivery trust data for any x402 service: full history of real PAID test purchases against the endpoint (not free 402 probes) - delivery rate, response validity, latency, price stability. Free aggregate at /leaderboard; this endpoint returns the complete per-check history for one resource. Untracked resources return 404 and you are NOT charged. Use it before wiring an unknown x402 service into your agent.

OFAC sanctions screening: fuzzy-match a person/entity/vessel name (transliteration-aware - Arabic and Slavic romanization variants) or look up a crypto address against the official OFAC SDN and Consolidated lists. Returns verdict (match/possible_match/clear), scored matches with programs and aliases, and full list-version provenance. Lists re-ingested every 6 hours.

Extract the full text of a PDF from a URL. Returns plain text, page count and word count. Handles reports, papers and documentation up to 25 MB.

AI summarization of any web page, raw text or HTML. Send JSON with one of url/text/html plus optional style (bullets|paragraph|tldr) and maxWords. Returns a dense, factual summary that preserves key numbers, names and conclusions. Powered by Claude.

AI structured-data extraction: turn any web page, text or HTML into JSON matching YOUR schema. Send JSON with one of url/text/html plus 'schema' (a JSON Schema object) and optional 'instructions'. Returns validated JSON. Powered by Claude with guaranteed schema conformance.

Convert raw HTML you already have into clean markdown. Send JSON {"html": "..."} and get back markdown with scripts, styles and boilerplate stripped. Cheaper than /read when the agent has already fetched the page.

Extract structured metadata from any web page: title, description, canonical URL, Open Graph and Twitter card tags, favicons, JSON-LD types, language and headings. Useful for link previews, content classification and SEO analysis.

Parse an XML sitemap or sitemap index into JSON: up to 5000 URLs with lastmod and priority, or the list of child sitemaps. Useful for agents planning site crawls or auditing site structure.

Extract the main article from any web page as clean, LLM-ready markdown. Returns title, byline, site name, publish date, excerpt and markdown body with boilerplate (nav, ads, footers) removed. Ideal for agents that need page content without burning tokens on raw HTML.

Parse an XML sitemap or sitemap index into JSON: up to 5000 URLs with lastmod and priority, or the list of child sitemaps. Useful for agents planning site crawls or auditing site structure.

Extract all hyperlinks from a web page as structured JSON: absolute URL, anchor text, internal/external classification and nofollow flag, up to 2000 unique links. Useful for crawling, SEO analysis and site mapping.

DNS lookup over Cloudflare DoH: query A, AAAA, CNAME, MX, NS, TXT, SOA, SRV, CAA or PTR records for any domain and get structured JSON answers with TTLs. Useful for domain research, email validation and infrastructure checks.

DNS lookup over Cloudflare DoH: query A, AAAA, CNAME, MX, NS, TXT, SOA, SRV, CAA or PTR records for any domain and get structured JSON answers with TTLs. Useful for domain research, email validation and infrastructure checks.

Extract the full text of a PDF from a URL. Returns plain text, page count and word count. Handles reports, papers and documentation up to 25 MB.

Parse any RSS, Atom or RDF feed into normalized JSON: feed title, description and up to 100 items with title, link, publish date, author, summary and categories. Ideal for agents monitoring news sources, blogs and changelogs.

Extract structured metadata from any web page: title, description, canonical URL, Open Graph and Twitter card tags, favicons, JSON-LD types, language and headings. Useful for link previews, content classification and SEO analysis.

Parse any RSS, Atom or RDF feed into normalized JSON: feed title, description and up to 100 items with title, link, publish date, author, summary and categories. Ideal for agents monitoring news sources, blogs and changelogs.

Convert raw HTML you already have into clean markdown. Send JSON {"html": "..."} and get back markdown with scripts, styles and boilerplate stripped. Cheaper than /read when the agent has already fetched the page.

Extract the main article from any web page as clean, LLM-ready markdown. Returns title, byline, site name, publish date, excerpt and markdown body with boilerplate (nav, ads, footers) removed. Ideal for agents that need page content without burning tokens on raw HTML.

Agent-native site crawler over x402 — send a URL and a page budget, get back clean markdown for every page plus a manifest: no signup, no API key, no SDK. Settles the WHOLE max_pages budget UPFRONT, quoted as max_pages × price (a crawl outruns the ~10-min payment authorization, so it cannot pay per page); unused pages are REFUNDED AS CREDITS on completion. Crawl $0.004/page; prepay $1 = 10,000 credits at 20% off. Docs: https://agentx402.ai

Agent-native structured extraction over x402 — send a URL and a JSON Schema, get back schema-valid JSON pulled from the page: no signup, no API key, no SDK. Pay-on-success: an extraction that can't produce schema-valid output settles nothing. Extract $0.020; prepay $1 = 10,000 credits, spent at 80% of the per-op price (20% off). Docs: https://agentx402.ai

Honeypot.is buy/sell simulation for any Base or Ethereum ERC-20. Returns is_honeypot verdict, buy/sell/transfer tax %, simulation success flag, and a reason string when a honeypot is detected. Use before every swap to detect sell-blocking risk.

Generates video from a text prompt via fal.ai Bytedance Seedance. Duration, aspect ratio, and resolution are configurable. Returns a hosted MP4 URL plus fal request id and seed. Use it for AI video, Seedance generation, generative video, and cinematic clips from a prompt.

Looks up a person from an email, name, domain, or company and returns a normalized public-data record (alias of people-enrich). Includes inferred display name, free-email detection, MX records, and optional public company context. Public-data only; no private people databases or LinkedIn scraping. Use it as a people lookup, people API, or person lookup.