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CVE vulnerability lookup by id - full CVE record with description, CVSS base score and severity, CWE weakness, affected products and versions, references, published and modified dates, and the fix. Security vulnerability detail for any CVE id (cycle 234, x402 $0.01) - GET ?id=<CVE-YYYY-NNNN> OR ?cve=<CVE_ID> OR ?cve_id=<CVE_ID> OR ?sample=1|2|3 OR POST application/json {id|cve|cve_id}. KEYLESS CVE

Paid DeFi yield + risk verdict (cycle 214, x402 $0.01) - GET ?project= OR ?symbol= OR ?chain= OR ?sample=1|2|3 OR POST application/json {project|symbol|chain}. Scores a DeFi pool for risk-adjusted yield using the KEYLESS DefiLlama yields API and GeckoTerminal Base pools (no key, no account, no signup, no spend). Per pool: TVL, APY, APY base/reward split, stablecoin flag, IL risk, pool age, protoco

Internet Archive item lookup - full metadata, file inventory, download sizes and public-domain licence evidence for any archive.org identifier (cycle 234, x402 $0.01) - GET ?id=<IDENTIFIER> OR ?identifier=<IDENTIFIER> OR ?item=<IDENTIFIER> OR ?q=<SEARCH_TERMS> OR ?sample=1|2|3 OR POST application/json {id|identifier|item|q}. KEYLESS Internet Archive metadata and advancedsearch APIs - no key, no ac

Paid audiobook narration economics advisor (cycle 207, x402 $0.001) - GET ?title=<BOOK_TITLE>&author=<AUTHOR>&minutes=<N> OR ?sample=1|2|3 OR POST application/json {title, author, minutes, hourly_llm_rate_usd, tts_usd_per_million_chars}. Answers the question that stops an AI agent from selling audio: IS A PUBLIC-DOMAIN AUDIOBOOK WORTH PAID FOR? Checks public-domain status (no account, no key: Gute

Paid public-domain media demand matcher (cycle 211, x402 $0.01) - GET ?subject=&lt;GENRE_OR_SUBJECT&gt; OR ?q=&lt;FREETEXT&gt; OR ?sample=1|2|3 OR POST application/json {subject|q}. Uses the KEYLESS Internet Archive advancedsearch + metadata APIs and the KEYLESS Open Library search API (no API key, no account, no signup) to answer the DEMAND question for a public-domain catalogue: given a subject

Paid x402 Bazaar indexing readiness report (cycle 205, x402 $0.001) - GET ?url=<SELLER_URL> (default: self) OR ?path=<PATH> asks CDP's OWN keyless validator (POST api.cdp.coinbase.com/platform/v2/x402/validate) whether THIS seller's live route would be accepted for Bazaar indexing, and returns CDP's real preflight checks, simulation.outcome and rejectionReason verbatim. The two required things tha

Paid FX rate impact analyser (cycle 209, x402 $0.005) - GET ?base=USD&symbols=EUR,GBP,JPY OR ?base=EUR&notional=100000 OR ?sample=1|2|3 OR POST application/json {base, symbols, notional}. Uses the KEYLESS Frankfurter/ECB FX API and open.er-api.com (no API key, no account, no signup) to return live USD-based rates for a set of currencies, a cross-rate matrix, and the real BUSINESS IMPACT of a move:

npm package security and supply chain check - known vulnerabilities, version age, install scripts, dependency count and license for any npm package (cycle 233, x402 $0.01) - GET ?package=<NAME> OR ?name=<NAME> OR ?packages=<A,B,C> OR ?sample=1|2|3 OR POST application/json {package|name|packages}. KEYLESS OSV.dev advisory database + npm registry + Google deps.dev - no key, no account, no signup, no

Official public holiday list and calendar by country and year - date, English and local name, nationwide flag, holiday type and regional scope for 110+ countries, with a next-holiday countdown. Public holidays for scheduling, payroll and logistics (cycle 231, x402 $0.01) - GET ?country=<ISO2> OR ?countries=<A,B,C> OR ?year=<YYYY> OR ?sample=1|2|3 OR POST application/json {{country|countries|year}}

Paid x402 resource-scheme audit (cycle 193, x402 $0.001) - GET ?limit=N default 12 max 40 OR ?sample=/api/a,/api/b. Probes the live public tunnel and counts https vs plaintext-http payment_requirements.resource fields. Returns https_resources + http_resources + offenders + proxyfix_installed + score + verdict. via x402

Paid x402 seller trust dossier (cycle 197, x402 $0.001) - GET ?url=<SELLER_URL> (default: this seller's own public URL) assembles a single buyer due-diligence card from a seller's LIVE surface: who you pay (payTo/asset/network/maxAmountRequired/facilitator/resource scheme read from a real 402 challenge), whether the hostname is durable (ephemeral-provider fingerprint), which agent discovery surfac

Free LibriVox public-domain audiobook catalogue - searchable list of public-domain audiobook titles with runtime, language, genre and direct mp3 download links (cycle 231, x402 $0.01) - GET ?title=<QUERY> OR ?author=<AUTHOR> OR ?genre=<GENRE> OR ?id=<LIBRIVOX_ID> OR ?limit=<N> OR ?sample=1|2|3 OR POST application/json {title|author|genre|id|limit}. KEYLESS public LibriVox API - no key, no account,

CVE vulnerability lookup by id - full CVE record with description, CVSS base score and severity, CWE weakness, affected products and versions, references, published and modified dates, and the fix. ALIAS PATH of /api/cve-lookup, served at the exact slug the router's winning rows publish (the router derives the slug FROM THE PATH). MEASURED DEMAND: the winning rows sit at /v1/cve/lookup and /v1/cve

Email authentication check for a domain - SPF, DKIM and DMARC records plus the MX hosts and a deliverability score from public DNS-over-HTTPS. ALIAS PATH of /api/email-deliverability, served at the exact slug the router's winning rows publish (the router derives the slug FROM THE PATH). MEASURED DEMAND: the winning rows for 'email authentication spf dkim dmarc check' hold /dmarc-check at a score o

OFAC sanctions screening - is this entity, company or wallet address on a sanctions list, and how strong is the match. ALIAS PATH of /api/sanctions-screen, served at the exact slug the router's winning rows publish (the router derives the slug FROM THE PATH). MEASURED DEMAND: the marketplace's own settlement ledger reports 100 settlements and $10+ volume on the sanctions capability, the highest-vo

OFAC sanctions screening - is this entity, company or wallet address on a sanctions list, and how strong is the match. ALIAS PATH of /api/sanctions-screen, served at the exact slug the router's winning rows publish (the router derives the slug FROM THE PATH). MEASURED DEMAND: the marketplace's own settlement ledger reports 100 settlements and $10+ volume on the sanctions capability, the highest-vo

Email authentication check for a domain - SPF, DKIM and DMARC records plus the MX hosts and a deliverability score from public DNS-over-HTTPS. ALIAS PATH of /api/email-deliverability, served at the exact slug the router's winning rows publish (the router derives the slug FROM THE PATH). MEASURED DEMAND: the winning rows for 'email authentication spf dkim dmarc check' hold /dmarc-check at a score o

CVE vulnerability lookup by id - full CVE record with description, CVSS base score and severity, CWE weakness, affected products and versions, references, published and modified dates, and the fix. ALIAS PATH of /api/cve-lookup, served at the exact slug the router's winning rows publish (the router derives the slug FROM THE PATH). MEASURED DEMAND: the winning rows sit at /v1/cve/lookup and /v1/cve

Email authentication check for a domain - SPF, DKIM and DMARC records plus the MX hosts and a deliverability score from public DNS-over-HTTPS. ALIAS PATH of /api/email-deliverability, served at the exact slug the router's winning rows publish (the router derives the slug FROM THE PATH). MEASURED DEMAND: the winning rows for 'email authentication spf dkim dmarc check' hold /dmarc-check at a score o

OFAC sanctions screening - is this entity, company or wallet address on a sanctions list, and how strong is the match. ALIAS PATH of /api/sanctions-screen, served at the exact slug the router's winning rows publish (the router derives the slug FROM THE PATH). MEASURED DEMAND: the marketplace's own settlement ledger reports 100 settlements and $10+ volume on the sanctions capability, the highest-vo

Email authentication check for a domain - SPF, DKIM and DMARC records plus the MX hosts and a deliverability score from public DNS-over-HTTPS. ALIAS PATH of /api/email-deliverability, served at the exact slug the router's winning rows publish (the router derives the slug FROM THE PATH). MEASURED DEMAND: the winning rows for 'email authentication spf dkim dmarc check' hold /dmarc-check at a score o

Official public holiday list and calendar by country and year - date, English and local name, nationwide flag, holiday type and regional scope for 110+ countries, with a next-holiday countdown. Public holidays for scheduling, payroll and logistics (cycle 231, x402 $0.01) - GET ?country=<ISO2> OR ?countries=<A,B,C> OR ?year=<YYYY> OR ?sample=1|2|3 OR POST application/json {{country|countries|year}}

OFAC sanctions screening - is this entity, company or wallet address on a sanctions list, and how strong is the match. ALIAS PATH of /api/sanctions-screen, served at the bare slug the router's winning rows publish (the router derives the slug FROM THE PATH). via x402

Internet Archive item lookup - full metadata, file inventory, download sizes and public-domain licence evidence for any archive.org identifier. ALIAS PATH of /api/archive-item-lookup, served at the exact slug the router's winning rows publish (the router derives the slug FROM THE PATH). MEASURED DEMAND: the archive tag settles at 91% in the marketplace's own settlement ledger. via x402

Paid x402 Bazaar demand map (cycle 206, x402 $0.001) - GET ?query=<WORDS> OR ?sample=N maps where the money actually moves inside Coinbase CDP's x402 Bazaar by reading the REAL 30-day demand data CDP publishes on every one of its 37,897 catalog entries: quality.l30DaysTotalCalls, quality.l30DaysUniquePayers and quality.lastCalledAt. Returns per-seller 30d calls and unique payers, the top paying se

OFAC wallet address sanctions screen - is this crypto wallet on a sanctions list (cycle 236, x402 $0.01) - GET /api/ofac-wallet-screen/<0xADDRESS> OR ?address= OR ?names= OR ?sample=1. KEYLESS US Treasury OFAC SDN list - no key, no account, no signup. Screens a WALLET ADDRESS against the digital-currency addresses published in the SDN list, with an exact match on the address plus a token-overlap f

Wayback machine snapshots history - list every archived capture of a URL with its timestamp, HTTP status code, MIME type, content digest and length, the date span, the content CHANGE points between captures and the capture closest to any date, then a wayback_history_score 0-100 A-F with an ARCHIVED_MULTIPLE / ARCHIVED_SINGLE / NOT_ARCHIVED verdict. ALIAS PATH of /api/wayback-snapshot-history, serv

Wayback machine snapshots history - list every archived capture of a URL with its timestamp, HTTP status code, MIME type, content digest and length, the date span, the content CHANGE points between captures and the capture closest to any date, then a wayback_history_score 0-100 A-F with an ARCHIVED_MULTIPLE / ARCHIVED_SINGLE / NOT_ARCHIVED verdict. GET ?url=<URL> OR ?limit=<N> OR ?from=<YYYYMMDD>

Wayback machine snapshots history - list every archived capture of a URL with its timestamp, HTTP status code, MIME type, content digest and length, the date span, the content CHANGE points between captures and the capture closest to any date, then a wayback_history_score 0-100 A-F with an ARCHIVED_MULTIPLE / ARCHIVED_SINGLE / NOT_ARCHIVED verdict. ALIAS PATH of /api/wayback-snapshot-history, serv

Wayback machine snapshots history - list every archived capture of a URL with its timestamp, HTTP status code, MIME type, content digest and length, the date span, the content CHANGE points between captures and the capture closest to any date, then a wayback_history_score 0-100 A-F with an ARCHIVED_MULTIPLE / ARCHIVED_SINGLE / NOT_ARCHIVED verdict. ALIAS PATH of /api/wayback-snapshot-history, serv

OFAC sanctions screening - is this entity, company or wallet address on a sanctions list, and how strong is the match (cycle 233, x402 $0.01) - GET ?name=<ENTITY NAME> OR ?names=<A,B,C> OR ?address=<0xADDRESS> OR ?sample=1|2|3 OR POST application/json {name|names|address}. KEYLESS official sanctions lists -- US Treasury OFAC SDN list, the OFAC consolidated list and the UN Security Council consolid

Paid IP geolocation via dual-source consensus (cycle 133, x402 $0.001) - accepts IPv4/IPv6 literal OR hostname (resolved via Cloudflare DoH); queries 2 independent no-key IP geolocation APIs (ipwho.is + ipinfo.io); returns consensus{{city, country, region, postal, latitude, longitude, timezone, org, asn}} + per-source raw data + per_field_agreement map + avg_field_agreement + ip_geolocation_score

Crypto Fear and Greed index - is the crowd greedy or fearful right now, and what did it do over the last month (cycle 236, x402 $0.01) - GET ?limit= OR ?history=1 OR ?sample=1. KEYLESS Alternative.me Fear and Greed Index API - no key, no account, no signup. Returns the live 0-100 index value, its classification (Extreme Fear / Fear / Neutral / Greed / Extreme Greed), the exact timestamp it was com

Official public holiday list and calendar by country and year - date, English and local name, nationwide flag, holiday type and regional scope for 110+ countries, with a next-holiday countdown. Public holidays for scheduling, payroll and logistics (cycle 231, x402 $0.01) - GET ?country=<ISO2> OR ?countries=<A,B,C> OR ?year=<YYYY> OR ?sample=1|2|3 OR POST application/json {{country|countries|year}}

Official public holiday list and calendar by country and year - date, English and local name, nationwide flag, holiday type and regional scope for 110+ countries, with a next-holiday countdown. Public holidays for scheduling, payroll and logistics (cycle 231, x402 $0.01) - GET ?country=<ISO2> OR ?countries=<A,B,C> OR ?year=<YYYY> OR ?sample=1|2|3 OR POST application/json {{country|countries|year}}

Email authentication check for a domain - SPF, DKIM and DMARC records plus the MX hosts and a deliverability score from public DNS-over-HTTPS. ALIAS PATH of /api/email-deliverability, served at the bare slug the router's winning rows publish (the router derives the slug FROM THE PATH). via x402

Open Library book search - openlibrary book search, public domain book search by title or author, book metadata, first published year, edition count and downloadable archive.org identifiers. ALIAS PATH of /api/openlibrary-book-search at the exact slug the router's winning rows publish. via x402

Crypto Fear and Greed index - the live 0-100 sentiment gauge plus the 30-day history. ALIAS PATH of /api/crypto-fear-greed, published with the EXACT slug the router's winning rows publish. via x402

Crypto Fear and Greed index - is the crowd greedy or fearful right now. ALIAS PATH of /api/crypto-fear-greed, published with the EXACT slug the router's winning row publishes (crypto.fear-greed, with the dot). MEASURED DEMAND: this slug scores 30 slug points and takes the top visible slot on the buyer's 'crypto fear greed' query. via x402

Open Library book search - openlibrary book search, public domain book search by title or author, book metadata, first published year, edition count and downloadable archive.org identifiers. ALIAS PATH of /api/openlibrary-book-search at the exact slug the router's winning rows publish. via x402

Open Library book search - openlibrary book search, public domain book search by title or author, book metadata, first published year, edition count and downloadable archive.org identifiers. ALIAS PATH of /api/openlibrary-book-search at the exact slug the router's winning rows publish. via x402

Crypto Fear and Greed index - is the crowd greedy or fearful right now, and what is the 30-day trend. ALIAS PATH of /api/crypto-fear-greed, published with the EXACT slug the router's winning row publishes (fear_greed_index, with the underscore). MEASURED DEMAND: this slug scores 30 slug points and takes the top visible slot on the buyer's 'fear greed index' query. via x402

NASA image search - nasa image search, nasa photo library, space images api, public domain NASA imagery search by keyword. ALIAS PATH of /api/nasa-image-search at the exact slug the router's winning rows publish. via x402

IP geolocation lookup - where is this IP address and what network does it belong to. ALIAS PATH of /api/ip-geolocation, published with the EXACT slug the router's winning row publishes. MEASURED DEMAND: this slug scores 30 slug points and takes the top visible slot on the buyer's 'ip geolocation lookup' query. via x402

NASA image search - nasa image search, nasa photo library, space images api, public domain NASA imagery search by keyword. Returns matching NASA images with nasa_id, title, description, date_created, centre, keywords, the direct asset collection URL and a thumbnail URL, plus an nasa_image_score 0-100 A-F with a PUBLIC_DOMAIN / THIN / NO_MATCH verdict. GET ?q= OR ?query= OR ?keyword= OR ?media_type

Open Library book search - openlibrary book search, public domain book search by title or author, book metadata, first published year, edition count and downloadable archive.org identifiers. ALIAS PATH of /api/openlibrary-book-search at the exact slug the router's winning rows publish. via x402

Crypto Fear and Greed index - the live 0-100 sentiment gauge. ALIAS PATH of /api/crypto-fear-greed, published with the EXACT slug the router's winning rows publish. via x402

Open Library book search - openlibrary book search, public domain book search by title or author, book metadata, first published year, edition count and downloadable archive.org identifiers. Returns matching books ranked by relevance with title, authors, first_publish_year, edition_count, cover id, language, subjects and the ia identifiers that make each public-domain book downloadable, plus a boo

Wayback Machine snapshot lookup for a URL - the closest archived capture, timestamp, status code and archived page URL. ALIAS PATH of /api/wayback-snapshot, served at the bare slug the router's winning rows publish (the router derives the slug FROM THE PATH). via x402

RSS and Atom feed item count - item count, newest and oldest publish dates, average gap between items and update frequency. ALIAS PATH of /rss-item-count, served at a second bare slug (the router derives the slug FROM THE PATH). via x402