agentdata-api.sander-van-aard.workers.dev
https://agentdata-api.sander-van-aard.workers.devEU VAT number validation (VIES) with predictable behavior for agents. Validates any EU VAT number against the European Commission's VIES service. Two modes: fast validation (may serve a cached result, labeled with its timestamp) and consultation-proof mode (always live, returns the official consultation number, requires requester identification). 'Not confirmed' does not imply the company is in...
Paid verification
How it worksNo sponsored paid call yet.
Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.
Quality grade
How grading works- ✓ Answers a real HTTP 402 challenge
- ✓ Publishes a /.well-known/x402 descriptor
- ✓ Payment address on record
- ✓ Settlement network declared
- ✓ Price declared
x402 readiness
Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here A, 76.3/100), which weighs availability, payability and on-chain demand. How the two differ
| Valid payment requirements | 10/10 | Payment requirements carry a payee, a mainnet network and a price. |
| Live 402 challenge | 20/25 | Endpoint reachable; its 402 challenge was seen earlier (96 ms). |
| x402 version | n/a | x402 version not observed yet. |
| Signed descriptor | n/a | No x402 standard defines a signed descriptor. |
| Uptime (30 days) | 15/15 | 32/32 probes succeeded over 30 days (100%). |
| Resource declaration | 10/10 | Declares 53 paid resource(s). |
| Verified identity | 5/10 | Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control. |
| Freshness + modern flags | 5/5 | seen in a source within 7 days; declares x402. |
| Security declaration | n/a | Payment is the access control for an x402 resource. |
Compared with peers
Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.
- Readiness
- Higher than 75% of peers
- This listing 87 · peer median 78
- Latency
- Faster than 89% of peers
- This listing 96 ms · peer median 205 ms
Where it loses the most points, and how to win them back
- Live 402 challenge −5
— Answer the paid path with a valid 402 challenge.
Now: Endpoint reachable; its 402 challenge was seen earlier (96 ms).
- Verified identity −5
— Claim the listing and prove control of its domain.
Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
Paid endpoints
53 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.
https://agentdata-api.sander-van-aard.workers.dev/eu/vat
$0.0020 / call
EU VAT number validation (VIES) with predictable behavior for agents. Validates any EU VAT number against the European Commission's VIES service. Two modes: fast validation (may serve a cached result, labeled with its timestamp) and consultation-proof mode (always live, returns the official consulta
https://agentdata-api.sander-van-aard.workers.dev/nl/insolvency
$0.1500 / call
Dutch bankruptcy and insolvency check against the official Central Insolvency Register of the Dutch judiciary (rechtspraak.nl). Detects published bankruptcy (faillissement), suspension of payments (surseance) and debt restructuring procedures. Best results with a KVK number. Returns procedure type,
https://agentdata-api.sander-van-aard.workers.dev/eu/lei
$0.0050 / call
LEI lookup (Legal Entity Identifier) from the official GLEIF register. Look up by LEI code or search by legal name (optional jurisdiction filter). Returns the official legal name, entity status, registration status (ISSUED/LAPSED), jurisdiction, legal form and registered address, with a direct GLEIF
https://agentdata-api.sander-van-aard.workers.dev/eu/eurc-peg
$0.0020 / call
EURC peg monitor — unique combined signal: the official ECB euro reference rate (USD/EUR) versus the live on-chain EURC/USDC price from the deepest Uniswap v3 pool on Base, returned as a deviation in basis points with both source values and timestamps. Tells agents holding or pricing EURC how far th
https://agentdata-api.sander-van-aard.workers.dev/crypto/verdict
$0.0300 / call
Live crypto trading verdict for a coin (e.g. BTC-EUR), resold from an upstream signal system. Two layers: 'long' (positional ALLOW_LONG/EXIT/HOLD with confidence, summary and primary risk) and 'daytrade' (a 15m LONG/EXIT setup with entry range, stop-loss, take-profit and reward:risk). Pick layer lon
https://agentdata-api.sander-van-aard.workers.dev/crypto/track-record
$0.0100 / call
Measured track record of the strategies behind /crypto/verdict, resold from the upstream signal system. Give a window in days (default 30, clamped 1..365); returns per strategy the number of trades, wins, win rate and average net return over that window, with the measurement start. A factual measure
https://agentdata-api.sander-van-aard.workers.dev/crypto/scan
$0.0100 / call
Machine-readable crypto market intelligence: the currently published long opportunities from an upstream advice system, ranked by opportunity_score (0-100 heuristic, never a calibrated win probability). Per opportunity: signal_id, version, coin, classification (STRONG_LONG..AVOID), opportunity type,
https://agentdata-api.sander-van-aard.workers.dev/crypto/signal
$0.0100 / call
One complete crypto opportunity by signal_id (from /crypto/scan): classification, opportunity_score (0-100 heuristic, not a win probability), entry zone, stop-loss, take-profit, reward:risk, positive and negative factors, conditions and invalidation conditions, execution economics (net maker/taker),
https://agentdata-api.sander-van-aard.workers.dev/crypto/validate
$0.0100 / call
Is this crypto opportunity still valid right now? Give a signal_id and receive its live status (ACTIVE/STALE/INVALIDATED), remaining entry window in seconds, current price versus the entry zone, spread, data quality, maker/taker economics recomputed at the current price, whether the upstream executi
https://agentdata-api.sander-van-aard.workers.dev/crypto/evidence
$0.0100 / call
Historical evidence behind a crypto opportunity: for its strategy (and coin where enough samples exist) the measured populations — detected, blocked, published, expired without entry, completed, wins, losses, time exits — plus win rate over completed outcomes only with a Wilson interval, average/med
https://agentdata-api.sander-van-aard.workers.dev/crypto/check
$0.0100 / call
Cheap polling for a crypto opportunity you already retrieved: send signal_id plus the known_version you hold and receive whether it changed, the current version, live status (ACTIVE/STALE/INVALIDATED), which change types occurred (score, classification, entry zone, economics, execution blockers, sta
https://agentdata-api.sander-van-aard.workers.dev/crypto/feed
$2.0000 / call
Subscribe for 30 days to the change feed behind /crypto/scan: one cursor over the upstream advice ledger, all coins at once. Returns a handle and a cursor; polling is then free and unlimited: /crypto/feed/since returns every published change since your cursor — new signals, classification flips, sta
https://agentdata-api.sander-van-aard.workers.dev/crypto/feed/renew
$2.0000 / call
Extend an existing crypto change-feed subscription from /crypto/feed by 30 days, using the same feed_handle. Renewing before the expiry date adds the days on top of the remaining time, so polling never has a gap; renew late and the month starts today. Your cursor lives on your side and is unaffected
https://agentdata-api.sander-van-aard.workers.dev/web/search
$0.0100 / call
Google-quality web search for AI agents at $0.010 per search. Send a query, get back compact JSON built for LLM consumption: top organic results (position, title, url, snippet), the direct answer when one exists, a trimmed knowledge graph and related searches. Tune with num (1-10 results), country a
https://agentdata-api.sander-van-aard.workers.dev/news/search
$0.0100 / call
Google News search for AI agents at $0.010 per call, from the same Serper.dev source as /web/search. Send a query, get back compact JSON: top news results with position, title, url, snippet, publish date and source. Tune with num (1-10 results), country and language (2-letter codes). Zero results is
https://agentdata-api.sander-van-aard.workers.dev/web/images
$0.0100 / call
Google Images search for AI agents at $0.010 per call, from the same Serper.dev source as /web/search. Send a query, get back compact JSON: top image results with position, title, image URL, source page link and dimensions. Tune with num (1-10 results), country and language (2-letter codes). Zero re
https://agentdata-api.sander-van-aard.workers.dev/web/places
$0.0100 / call
Google Places (local businesses with rating, address and phone number) for AI agents at $0.010 per call, from the same Serper.dev source as /web/search. Send a query, get back compact JSON: top places with position, title, address, coordinates, rating, rating count, category, phone and website. Tune
https://agentdata-api.sander-van-aard.workers.dev/web/scholar
$0.0200 / call
Google Scholar search (papers with citation counts) for AI agents at $0.020 per call, from the same Serper.dev source as /web/search. Send a query, get back compact JSON: top papers with position, title, url, publication info, snippet, year and citation count. Tune with num (1-10 results), country a
https://agentdata-api.sander-van-aard.workers.dev/web/contents
$0.0030 / call
Read any web page as clean LLM-ready markdown for $0.003 — the natural companion to /web/search. Send a URL, get back the readable core: title, headings, paragraphs, lists and links, stripped of scripts, styles, navigation and other boilerplate. Choose markdown or plain text and cap the size with ma
https://agentdata-api.sander-van-aard.workers.dev/web/search-read
$0.0300 / call
Search and read in one call: a web search plus the full page text of the top results, for $0.030 — cheaper than a separate search and reads. Send a query, get back results (position, title, url, snippet) enriched with the page's readable content as markdown or text. You get the number of pages you a
https://agentdata-api.sander-van-aard.workers.dev/web/crawl
$0.0100 / call
Crawl one site in one paid call: start URL + max_pages (2-20); we follow same-host links breadth-first, returning each page as clean markdown (same extraction as /web/contents). Priced at $0.002 per requested page, quoted as max_pages up front — finding fewer pages is still a complete delivery. Fail
https://agentdata-api.sander-van-aard.workers.dev/llm/chat
$0.0020 / call
LLM chat completion per call — no account, no API key, no token math. Three flat-priced tiers: fast $0.002 (DeepSeek v4 Flash), smart $0.02 (GPT-5.4 mini), reasoning $0.03 (DeepSeek v4 Pro). Send OpenAI-style messages, get the assistant reply with finish_reason and token usage. Input capped per tier
https://agentdata-api.sander-van-aard.workers.dev/doc/markdown
$0.0500 / call
Document to clean markdown for AI agents, $0.05 per file: PDF, DOCX, XLSX, ODT, ODS, CSV, HTML or XML in, LLM-ready markdown (or plain text) out. One call: send a url or the file as base64 (max 10 MB) — no upload step, no polling. A PDF without a text layer (a scan) returns 400 and you pay nothing;
https://agentdata-api.sander-van-aard.workers.dev/doc/ocr
$0.2000 / call
OCR for AI agents, $0.20 per image: scans, photos and screenshots (PNG, JPEG, WebP, GIF, max 5 MB) to exact text with line breaks and reading order preserved. One call: send a url or base64 — no upload step, no polling. No text found means a 400 and you pay nothing. USDC on Base, no account, no API
https://agentdata-api.sander-van-aard.workers.dev/doc/extract
$0.2500 / call
Structured data from any document for AI agents, $0.25 per call: send a PDF, DOCX, XLSX, HTML, image or plain text plus a JSON Schema, get back one JSON object filled from the document — invoices, contracts, forms, CVs, receipts. Fields the document does not state come back null. One call, url or ba
https://agentdata-api.sander-van-aard.workers.dev/media/transcribe
$0.3000 / call
Speech to text for AI agents, $0.30 per file: MP3, WAV, M4A, OGG, FLAC or WebM audio (max 5 MB, about 5 minutes) to a transcript with timed segments, detected language and optional WebVTT subtitles. One call: send a url or base64 — no upload step, no polling. No speech found means a 400 and you pay
https://agentdata-api.sander-van-aard.workers.dev/relay/crypto-news
$0.0100 / call
Real-time crypto market news with sentiment analysis and top headlines ranked by importance, for $0.01 per call. One request, no parameters needed — get the latest market-moving stories as structured JSON, ready for trading agents and research pipelines. Relayed live from a proven upstream source; i
https://agentdata-api.sander-van-aard.workers.dev/relay/edgar-filings
$0.0100 / call
Latest SEC EDGAR filings for any US-listed company for $0.01 per call: 10-K annual reports, 10-Q quarterly reports and 8-K material events, by stock ticker or CIK, sourced live from data.sec.gov. Returns the parsed filing list (company, form type, filing date, direct document URL), filterable with '
https://agentdata-api.sander-van-aard.workers.dev/relay/reddit-search
$0.0500 / call
Keyword-search all of Reddit (or one subreddit) for $0.05 per call — social listening for AI agents without login or API key. Returns matching posts with title, author, subreddit, score, comment count, permalink and timestamp, sorted by relevance, top, new, hot or comments, with an optional time win
https://agentdata-api.sander-van-aard.workers.dev/eu/crypto-firm-check
$0.0300 / call
Is this crypto firm authorised in the EU? One call checks the official ESMA interim MiCA register of authorised crypto-asset service providers (CASPs) AND the EU non-compliant entities warning list. Search by firm name, platform website/domain, or LEI. Returns authorisation details (member state, co
https://agentdata-api.sander-van-aard.workers.dev/x402/counterparty-check
$0.0200 / call
Trust check before paying an unfamiliar x402 service, by pay_to address and/or service URL. Combines our own availability monitoring of the service's x402 endpoint (30-day uptime, last check, observed payTo/price and drift between our measurements), on-chain USDC payment history to the address on Ba
https://agentdata-api.sander-van-aard.workers.dev/x402/preflight
$0.0100 / call
Preflight before paying an x402 service: is it working right now, and did it work the past 30 days? One live probe of the exact resource URL you intend to pay (status, latency, x402 validity, the payTo/price the service itself publishes in its 402, manifest presence) plus our own monitoring history
https://agentdata-api.sander-van-aard.workers.dev/x402/service-report
$0.0500 / call
Full reliability report on one x402 service from our own availability monitoring (~2 probes/day per host): daily probe series over 30 days (probes, ok, avg/max latency), uptime 7d/30d, all observed change events (up/down transitions, payTo drift, price drift, manifest appearing/disappearing) and the
https://agentdata-api.sander-van-aard.workers.dev/x402/network-report
$0.0100 / call
Daily state-of-the-network report on the x402 ecosystem, built exclusively from our own probes (~2 per host per day): how many hosts we monitor, share of probes returning a valid 402 over 24h and 7d, host status breakdown (ok_402, HTTP errors, unreachable), manifest coverage, and counts of observed
https://agentdata-api.sander-van-aard.workers.dev/x402/network-feed
$2.0000 / call
Subscribe for 30 days to a change feed of the x402 network, from our own probes (~2 per host per day, 1500+ hosts). Returns a handle and a cursor; polling is then free and unlimited: /x402/network-feed/since returns all that changed since your cursor (down/up, payTo drift, price drift, manifest gain
https://agentdata-api.sander-van-aard.workers.dev/x402/network-feed/renew
$2.0000 / call
Extend an existing x402 network-feed subscription by 30 days using the same feed_handle. Renewing before the expiry date adds to the remaining time instead of restarting it, so polling never has a gap. Your cursor is kept.
https://agentdata-api.sander-van-aard.workers.dev/x402/settlement-attest
$0.2500 / call
For a seller receiving an agent payment: verify the settlement on-chain (tx confirmed, correct recipient and amount), report the payer wallet's on-chain history, screen the provided counterparty name against the EU and UN sanctions lists, and return an Ed25519-signed attestation you keep as your aud
https://agentdata-api.sander-van-aard.workers.dev/agent/board
$2.0000 / call
A live kanban board your agents work on and your human steers, for 30 days. One call returns an MCP endpoint, one key per agent, and a one-click link for your human. Your human connects that same MCP endpoint to their own chat — Claude, Gemini, Cursor — and reads every card, note and audit-log line
https://agentdata-api.sander-van-aard.workers.dev/agent/board/renew
$2.0000 / call
Extend an agent board from /agent/board by 30 days. Give the board_handle you were issued. Renew early and the days are added on top; renew late and the month starts today. An expired board is frozen, never deleted: your human keeps seeing it, every card and note survives, and agents simply cannot w
https://agentdata-api.sander-van-aard.workers.dev/agent/want
$0.0100 / call
File what you want to buy from an agent-facing API and cannot buy today. Optional kind is typically one of coin, country, vies_country, monitor_host, sms_service — free-form values possible. The $0.01 fee is there to keep intents honest, not to sell you anything: it is not a purchase of the capabili
https://agentdata-api.sander-van-aard.workers.dev/x402/demand-report
$0.0500 / call
What are agents asking for that they cannot buy yet, aggregated over 30 days. From our own measurements: calls we rejected on an uncovered value where the caller had already presented payment (kind is typically coin, country, vies_country, monitor_host or sms_service — free-form values possible), fr
https://agentdata-api.sander-van-aard.workers.dev/eu/sanctions-screen
$0.0150 / call
Screen a company or organisation name against two official sanctions lists in one call: the EU consolidated financial sanctions list AND the UN Security Council consolidated list (entity sections only — no persons). Normalised name matching across all registered aliases; returns per match the source
https://agentdata-api.sander-van-aard.workers.dev/eu/token-registry
$0.0100 / call
Is this crypto-asset or its issuer MiCA-notified in the EU? Searches the official ESMA interim MiCA register token lists — e-money token (EMT) issuers, asset-referenced token (ART) issuers, and notified crypto-asset white papers — by issuer name, LEI, or Digital Token Identifier (DTI). Returns issue
https://agentdata-api.sander-van-aard.workers.dev/uk/company
$0.0100 / call
Official UK company check from the Companies House register. Look up by company number (exact) or search by name (up to 5 candidates). Returns official name, status (active/dissolved/liquidation), type, incorporation and cessation dates, registered office, SIC codes, and the register's insolvency-hi
https://agentdata-api.sander-van-aard.workers.dev/fr/company
$0.0100 / call
Official French company check from the INSEE Sirene register (French government open data). Look up by SIREN (exact) or search by name (up to 5 candidates). Returns official legal name, administrative status (active/ceased), legal form and NAF activity codes, company size category, creation/cessatio
https://agentdata-api.sander-van-aard.workers.dev/fr/insolvency
$0.1000 / call
French insolvency check against BODACC, the official bulletin of civil and commercial announcements (DILA open data). Searches collective procedures (sauvegarde, redressement, liquidation judiciaire), conciliation and professional recovery announcements by SIREN. Returns judgment nature and date, co
https://agentdata-api.sander-van-aard.workers.dev/no/company
$0.0100 / call
Official Norwegian company check from the Enhetsregisteret (Brønnøysund Register Centre, open data). Look up by organisation number (exact) or search by name (up to 5 candidates). Returns official name, organisation form, industry code, employee count, registration date, business address and — direc
https://agentdata-api.sander-van-aard.workers.dev/cz/company
$0.0100 / call
Official Czech company check from the ARES register (Ministry of Finance, open data). Look up by ICO (exact) or search by name (up to 5 candidates). Returns official name, legal form code, VAT number (DIC), establishment and termination dates, registered address and NACE activity codes, with a direc
https://agentdata-api.sander-van-aard.workers.dev/fi/company
$0.0100 / call
Official Finnish company check from the YTJ register (PRH open data). Look up by Business ID (exact) or search by name (up to 5 candidates). Returns the current official name, company form, main business line, registration/end dates, address, raw YTJ status codes and registered company situations su
https://agentdata-api.sander-van-aard.workers.dev/pl/company
$0.0100 / call
Polish VAT whitelist check (official Ministry of Finance register). Verifies a company's VAT status by NIP and — uniquely — whether a given bank account number (NRB) is registered to that company in the tax register: the standard Polish invoice-fraud check before paying a supplier. Returns VAT statu
How to call
curl -sS -i -X GET https://agentdata-api.sander-van-aard.workers.dev # expect HTTP 402 Payment Required (about $0.002/call)
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