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Crypto & Web Data API for AI agents (pay-per-call, from $0.003)

https://api.agent-data.workers.dev/api/v1/arbitrage
● healthy crypto

Crypto market data and web tools for autonomous agents: read web pages, PDFs and YouTube transcripts, check domains and tokens. Every `/api/v1/*` call is paid per call: **$0.003** for simple reads, **$0.005-$0.01** for aggregates, **$0.02-$0.03** for token risk checks and reports (USDC or USDT). Each route's price is in `x-payment-info`. **x402 agents:** pay automatically. The 402 response car...

Category
crypto
Chains
base, solana
Price
$0.0100 USDC / call

Quality grade

How grading works
B+ 68.9 / 100
Availability 20.0 / 20
Endpoint responded (HTTP 402)
Payability 15.0 / 15
  • ✓ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✓ Price declared
Demand 11.4 / 35
15 distinct payers, 50 USDC transfers in the last 30 days; the wallet is shared by 2 listings, so each is credited 1/2
Performance 8.5 / 10
Last probe answered in 476 ms (full marks at 200 ms or less)
Readiness 14.1 / 15
Agent readiness 94/100
Owner verified 0.0 / 5
Nobody has claimed this listing yet
Endpoint last checked 18 h ago. On-chain activity last read 3 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass. This grade sets search order and leaderboards; the readiness score below is shown for reference only.

x402 readiness

A · 91/100

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 B+, 68.9/100), 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 25/25 Paid endpoint answers with an HTTP 402 challenge (476 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 8/8 probes succeeded over 30 days (100%).
Resource declaration 8/10 33 paid resources; 33 sampled lack a description.
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.
Applicable criteria total 75 points, scaled to 100.
Responsiveness: Responsive (476 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).
Payment evidence: x402_challenge — We sent a request and got a live HTTP 402 challenge. Also: x402_manifest, catalog_listing. Qualifies the payment claim; adds no points.
Measured 2026-11-11.
Nine criteria, the same as the A2A readiness score, read from our daily probe of the paid endpoint, its payment requirements and 30-day probe history. Signed descriptor and security declaration are n/a for x402 (payment is the access control), as is an x402 version we have not observed; the remaining points are scaled to 100. Grades: A>=90, B>=75, C>=60, D>=40, F<40. It also feeds 15 points of the x402 quality grade.

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 90% of peers
This listing 91 · peer median 78
Latency
Faster than 20% of peers
This listing 476 ms · peer median 205 ms

Where it loses the most points, and how to win them back

  • 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.
  • Resource declaration −2 — Declare each paid resource with its input and output schema.
    Now: 33 paid resources; 33 sampled lack a description.

How many agent tools actually work · All statistics

Paid endpoints

33 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://api.agent-data.workers.dev/api/v1/evm/call?to=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&sig=totalSupply()&returns=uint256&chain=base
https://api.agent-data.workers.dev/api/v1/evm/token/balance?token=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&address=0x2a991f1cf788ff7fb5df8f9d507cfc98b5b1bd4e&chain=base
https://api.agent-data.workers.dev/api/v1/evm/address?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
https://api.agent-data.workers.dev/api/v1/search?q=x402%20payment%20protocol
https://api.agent-data.workers.dev/api/v1/news/search?q=solana%20ETF&when=7d
https://api.agent-data.workers.dev/api/v1/company?domain=stripe.com
https://api.agent-data.workers.dev/api/v1/ens?name=vitalik.eth
https://api.agent-data.workers.dev/api/v1/evm/balance?address=0x2a991f1cf788ff7fb5df8f9d507cfc98b5b1bd4e&chain=all
https://api.agent-data.workers.dev/api/v1/evm/tx?hash=0x0000000000000000000000000000000000000000000000000000000000000000
https://api.agent-data.workers.dev/api/v1/polymarket?q=bitcoin
https://api.agent-data.workers.dev/api/v1/defi/yields?chain=Base&symbol=USDC&stablecoin=true
https://api.agent-data.workers.dev/api/v1/market/overview
https://api.agent-data.workers.dev/api/v1/token/report?mint=DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263
https://api.agent-data.workers.dev/api/v1/rss?url=https://hnrss.org/frontpage
https://api.agent-data.workers.dev/api/v1/fx?from=USD&to=EUR,UAH,BTC
https://api.agent-data.workers.dev/api/v1/wikipedia?q=Ethereum
https://api.agent-data.workers.dev/api/v1/email/[email protected]
https://api.agent-data.workers.dev/api/v1/fetch?url=https://en.wikipedia.org/wiki/Bitcoin
https://api.agent-data.workers.dev/api/v1/pdf?url=https://bitcoin.org/bitcoin.pdf
https://api.agent-data.workers.dev/api/v1/youtube/transcript?url=https://www.youtube.com/watch?v=jNQXAC9IVRw
https://api.agent-data.workers.dev/api/v1/domain?name=coinbase.com
https://api.agent-data.workers.dev/api/v1/evm/token/risk?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&chain=base
https://api.agent-data.workers.dev/api/v1/tokens/trending?chain=solana
https://api.agent-data.workers.dev/api/v1/price?symbol=BTCUSDT
https://api.agent-data.workers.dev/api/v1/prices?symbols=BTC,ETH,SOL
https://api.agent-data.workers.dev/api/v1/candles?symbol=ETHUSDT&interval=1h
https://api.agent-data.workers.dev/api/v1/funding?symbol=BTC
https://api.agent-data.workers.dev/api/v1/arbitrage
https://api.agent-data.workers.dev/api/v1/gas
https://api.agent-data.workers.dev/api/v1/news
https://api.agent-data.workers.dev/api/v1/token/risk?mint=DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263
https://api.agent-data.workers.dev/api/v1/token/price?mint=DezXAZ8z7PnrnRJjz3wXBoRgixCa6xjnB7YaB1pPB263
https://api.agent-data.workers.dev/api/v1/wallet?address=vines1vzrYbzLMRdu58ou5XTby4qAqVRLmqo36NKPTg

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X GET https://api.agent-data.workers.dev/api/v1/arbitrage  # expect HTTP 402 Payment Required (about 0.01 USDC/call)
/.well-known/x402.json
https://api.agent-data.workers.dev/.well-known/x402

Listed in

Directories this entry was found in.

x402scan since 2026-11-05