Every agent-payable API.

Resume a task: read back the latest version of every key you wrote under a given taskId via /api/agent-memory, or that another agent explicitly granted you read access to. Priced below a write on purpose -- reads are cheaper than writes here; this price is a provisional first cut, not a settled policy.

Where did this address's money come from, and would it have arrived if the address had not sent it first? Give any Base address, get a live read: distinct payers, how many of them this address funded inside the window, the USDC left once those are removed, and how many funded wallets sent back the exact amount they were given, and how fast. One seller in our weekly reading took in 339.20 USDC, and 338.70 of it was its own money coming back.

Is this x402 seller actually paid? Give a payTo address, get its verdict from our own read of Base: paid, single-payer, self-funded, dust-only or silent, with the number of payers, how many of them the seller itself funded, and the USDC that arrived in a fixed window every seller is measured over. The catalogue's own call counts are not payments: across 1 397 sellers we read both ways, 312 are called and receive nothing on chain.

Identify what an EVM address IS in one keyless call: contract/protocol identity (entity, name, category) from Open Labels Initiative attestations with trusted-attester consensus, plus on-chain truth (is_contract, code_hash), reverse ENS/Basename, sanctions (OFAC/UK/EU/UN) and scam-drainer flags. Cited provenance; unknown addresses answer with empty labels, never a 404.

Recent transaction history for an address, normalized across Ethereum, Base, Bitcoin, and Solana -- direction, counterparty, and value where the chain's data model makes that derivable.

AI-search visibility (AEO) audit of a website for answer engines and agents. Fetches the target's own public surface and computes a composite visibility score 0-100 with a rating (poor, fair, good, excellent) across six axes: answerability, structured data, AI-crawler access, crawlability, llms.txt readiness and MCP well-known readiness, plus a prioritized list of fixes. Deterministic, no LLM. Visibility indicators, not a guarantee.

Focused check of a site's /llms.txt and /llms-full.txt: presence, size and llmstxt.org structural validity (an H1 title, a blockquote summary, sections of markdown links). Returns a readiness score plus fixes. Cheap sub-check of the full AEO audit.

Tweets from X (Twitter) for one account or a search query. {"mode":"profile","query":"nasa"} returns that account's tweets, mode search takes keywords, and limit is 1-20. Each tweet has text, createdAt, url, lang, likeCount, retweetCount, replyCount, quoteCount, viewCount, isReply, isRetweet and an author object with userName, name, followers and isBlueVerified. No X developer account needed; pay per call in USDC.

Google Search results (SERP) for a query, as JSON. Each record is one results page with organicResults (position, title, url, displayedUrl, description), paidResults, relatedQueries, peopleAlsoAsk and searchQuery metadata. Body: {query, limit}. limit (1-20) is rounded up to whole pages of about 10 results, so 1-10 returns one page and 11-20 returns two. Useful for rank checks, source discovery and grounding answers in search results.

Look up one public LinkedIn profile per call. Pass {query} as a username (williamhgates), a profile URL or a URN; there is no limit field. The normalized object holds name, first_name, last_name, headline, about, location, country_code, current_company, followers, connections, avatar, plus experience (title, company, start_year, end_year, is_current) and education (school, degree, field, years). Email addresses are not returned.

Indeed jobs search API for AI agents: send a job title and an optional location and country and get up to 50 job listings as JSON: title, employer, location, posting date, job types, benefits, salary range when listed and the listing's description. Filter by how recently a job was posted; 60 countries. Jobs you paid for but did not get are refunded.

Screenshot API for AI agents: send {url} and get a JPEG, PNG, WebP or PDF of the page as base64 in JSON, with final URL, byte size and pixel size. Pick a desktop, mobile or tablet viewport, full page, dark mode, a delay or one element by CSS selector. It shows what a normal browser sees and does not get past bot protection (use unblock for those pages' text). A page that can't be captured, or renders blank, is not charged.

Unblocker for AI agents: send {url} and get the page back as clean Markdown, with title, description, language, final URL and HTTP status. Gets through Cloudflare and other common bot protection and can render JavaScript-heavy pages. Set format to html or text for those instead. A page that can't be fetched (blocked, error status or empty) is not charged. No API key, proxy or account: pay per call in USDC over x402 (Base, Polygon) or MPP (Base).

YouTube comments API for AI agents: send the URL of a video and get its comments as JSON: text, time, likes and reply count. Up to 100 comments per call. The commenters' names and handles are not returned. Pay per call in stablecoins; comments you paid for but did not get are refunded.

LinkedIn jobs search API for AI agents: send a job title or keywords and an optional location and get up to 50 public job listings as JSON: title, company, location, posting date, employment type, seniority, salary when listed, the listing's URL and its description. Filter by how recently a job was posted. Recruiter names are not returned. Jobs you paid for but did not get are refunded.

Google Maps reviews API for AI agents: send a place_id or a Google Maps place URL and get up to 50 reviews as JSON: stars, text and its translation, date, likes, the owner's reply, plus the place's name, address and rating. Sort by newest, relevant, highest or lowest. Reviewer names, profiles and photos are not returned. A place with no reviews is not charged; reviews you paid for but did not get are refunded.

Amazon product reviews API for AI agents: send an ASIN or an Amazon product URL and get up to 50 customer reviews as JSON: rating, title, text, date, verified-purchase flag and helpful votes. Sort by recent or helpful, filter by stars, and pick the marketplace (US, UK, DE, FR, IT, ES, CA, JP). Reviewer names and photos are not returned. A product with no reviews is not charged.

Facebook page API for AI agents: send the URL of a public Facebook page and get its public details as JSON: name, category, followers, intro, website, and the email, phone and address when the page lists them. One page per call; pay per call in stablecoins. A page that is private, unknown or not a page is not charged.

Meta ad library API for AI agents, for competitor research: send a keyword or an advertiser (name or page id) and get its public ads as JSON: advertiser, start and end date, whether it is still running, platforms, text, title, call to action, link, format and image URLs. Filter by country and by active or all ads; up to 100 per call, each ad once. Pay per call in stablecoins; an empty search is not charged and ads you paid for but did not get are refunded.

Web search with page content for AI agents: send keywords and get the top results with each page read as clean Markdown, in one call: title, URL, a short description and the page's text. Up to 5 results, each page cut at 20,000 characters. Pages that cannot be fetched are dropped and refunded. Pay per call in stablecoins.

Look up one public Instagram account by username. Get its biography, website, follower and following counts, post count, business category and verification status as JSON. Use it for account research and creator comparisons; a profile that cannot be read is not charged.

LinkedIn profile with a verified work email for AI agents: send one LinkedIn profile URL and get the public profile (headline, about, location, current and past positions, education, skills) plus the work email of its owner that passed a deliverability check (not a catch-all domain), with its status and quality score. Pay per profile in stablecoins; a profile with no verified email is not charged.

YouTube transcript API for AI agents: send a video URL or 11-character id and get its published subtitles as timed JSON segments, plain text, SRT or WebVTT, with title, channel, duration, views and publish date. Choose one of ten subtitle languages or any. No speech-to-text. A video without subtitles in that language is not charged.

TikTok comments API for AI agents: send the URL of a video and get its comments as JSON: text, time, likes and reply count. Up to 100 comments per call. The commenters' names and handles are not returned. Pay per call in stablecoins; comments you paid for but did not get are refunded.

Website contact finder API for AI agents: send up to 5 websites and get, for each, the emails, phone numbers and social profile links printed on its home, contact and about pages, as JSON with the contact page that was found. Pay per website in stablecoins; a site where no contact was found is not charged and you are refunded for it.

Shopify store products API for AI agents: send a store's domain and get up to 250 of its public products as JSON: title, vendor, product type, price range, compare-at price, sale and availability flags, tags, image, description and variants with SKU and price. A site that is not a Shopify store, or has no public products, is not charged; products you paid for but did not get are refunded. Pay per call in stablecoins.

Search API for AI agents: web or news search with up to 30 results per call, each with a title, URL and a query-relevant excerpt. Filter by site, or by category: developer (repos, issues, docs), GitHub or PDF. Fast, about a second. Pay per call in stablecoins.

Search Reddit or read a subreddit. Use mode hashtag with a subreddit name (no r/), profile with a username, or search with keywords, plus limit 1-20. Every record carries a normalized object with kind, title, body, author, subreddit, url, created_at, upvotes and comments_count. Comments are not fetched. upvotes and comments_count can be null, and subreddit mode may return the subreddit's own record (kind: community) with its description.

eBay sold listings API for AI agents: send a keyword and get confirmed sold items as JSON, for resale price comps: title, sold price and currency, shipping, total price, sale date, condition, listing type, bids and the seller's feedback percentage. Eight eBay marketplaces, the last 1 to 90 days, filter by new or used. Seller names and thumbnails are not returned. A search that returns nothing is not charged.

LinkedIn company enrichment API for AI agents: send up to 10 LinkedIn company page URLs and get one JSON record per company: name, website, employee and follower counts, founding year, tagline, description, industries, specialities, headquarters and locations, company type. Pay per company in stablecoins; a company that is not found is not charged.

What agents keep asking for that nobody serves yet: aggregated, qualified demand clusters from a live agent-demand board, with caller counts and how long each need has persisted. Use it when a seller or an agent is choosing what to build next and wants unmet demand with evidence instead of guesses.

Repair malformed JSON (trailing commas, single quotes, unquoted keys, code fences, truncated output) and optionally validate the result against a supplied JSON Schema. Returns the parsed value, the canonical text, a change log and validation errors.

Buy a 30-day verified agent listing for $0.01 USDC. AgentIndex audits reachability, x402 compatibility and discovery manifests, then publishes a machine-readable registry entry and score badge for buyer trust and SEO.

Amsterdam events: Use when a user asks what is on in Amsterdam on a date or in a district, plans travel, venues, staffing, security or deliveries around large events, or needs crowd sizes, road closures context or permit status before the event appears on ticket sites.

EU public tenders: Use when a user asks which public tenders or government contracts are open in an EU country or sector, wants bid opportunities by CPV code or keyword with a deadline, or needs to monitor what public buyers are procuring before the deadline passes.

Security advisories: Use when a user asks whether a CVE is actively exploited, which vulnerabilities in a vendor or product to patch first, whether it is used in ransomware campaigns, or needs CISA KEV due dates, required actions and FIRST EPSS exploit probability in one call.

EU funding calls and grants: Use when a user asks which EU grants, subsidies or Horizon Europe calls are open or coming up for a topic, sector or organisation type, needs the deadline, budget and call link for an EU funding opportunity, or looks for small cascade funding calls for SMEs and start-ups.

European CERT security advisories: Use when a user asks whether the Dutch, German or French national CERT or CERT-EU has warned about a CVE, vendor or product, needs the official European advisory ID and link for a patch or NIS2 report, or wants recent government advisories that cover known exploited (CISA KEV) vulnerabilities.

OpenAI-compatible chat completions on frontier models: GPT-6.1 Sol and Terra, GPT-5.5, Claude Sonnet 5.5 and Haiku 5.5, Gemini 3.8 Flash, Grok 4.7, GPT-6 Luna, gpt-oss.

Store the request body under {key} in box {box} (a box_ id, a channel name, or "me" for your wallet's box). Query ttl=seconds (60 to 604800, default 3600). Body up to 65536 bytes.

Block until {key} in box {box} has a seq greater than since (query since=, default 0), up to timeout= seconds (max 25). Returns the item, or {"value":null,"timed_out":true}.

Purchase dossier for the domain agentfive.ai: fixed price US$5,000,000 USD, every payment route (USDC on Base, escrow, marketplace), the transfer procedure and the seller's attestation. Use when an agent or its operator wants to buy this domain name.

Search company registries by name. Returns jurisdiction, status, filing history, officers, registered address.

Multi-source OSINT pack — GDELT + BBC + HN + Reddit, 4-layer verification layer, combined relevance scoring (research pack)

Search USPTO trademark database. Returns mark, owner, filing date, status, registration number, goods/services classes.

Regulatory pulse — SEC Atom + openFDA adverse + USPTO + FCC OET + FAA registry patterns for bio/tech markets

Business registry lookup: company identity and legal entity enrichment as structured JSON, by registration number, name and country, VAT number, LEI or website. Registers of Czechia, Norway, the United Kingdom, France, Finland, US SEC filers and every LEI holder. Use when: you need the official identity of one company.

Company due diligence in one call (KYB, vendor and supplier checks). Give a company name and country, a registry number, an EU VAT number, an LEI or a website domain. Returns the legal entity from the official register, LEI and parents, VAT validity, a sanctions screen (OFAC, EU, UK) of the company and officers, and the domain's age, mail and TLS, as signed pass/warn/fail checks with sources. Use when you must decide whether to trust an unknown company.

German commercial register (Handelsregister) record: register court and number, legal form, status, seat, capital, representation rules, officers and history. Slower (about a minute). Use when: the company is German.

Sanctions screening against the official OFAC SDN, EU consolidated and UK lists with fuzzy name matching, a score per hit, the programme and each list's publication date. Screen a company or person name (optionally with country or birth date) or a crypto wallet address. Use when: screening a counterparty, supplier, customer or wallet before a payment or onboarding. A screening aid, not a compliance determination.