{
 "generated": "2026-08-09T23:06:39.434997+00:00",
 "source": "https://whatagentsbuy.com",
 "license": "CC BY 4.0, attribute What Agents Buy",
 "method": "Every grade comes from paying the service with a real wallet and recording what happened, or from calling it where it is free. No service pays to appear or to be graded.",
 "grade_scale": [
  "A+",
  "A",
  "A-",
  "B+",
  "B",
  "B-",
  "C+",
  "C",
  "C-",
  "D+",
  "D",
  "D-",
  "F"
 ],
 "count": 12,
 "ratings": [
  {
   "service": "pro-api.coinmarketcap.com",
   "grade": "A+",
   "graded_on": "price honesty",
   "verdict": "Honest",
   "quoted": "$0.01",
   "charged": "$0.01",
   "delivered": true,
   "free_to_call": false,
   "date": "2026-08-05",
   "title": "CoinMarketCap charges $0.01 per call and quotes it on seven chains",
   "url": "https://whatagentsbuy.com/p/cmc-ten-billion",
   "service_url": "https://whatagentsbuy.com/s/pro-api.coinmarketcap.com"
  },
  {
   "service": "stablememes.dev",
   "grade": "A",
   "graded_on": "price honesty",
   "verdict": "Honest",
   "quoted": "$0.01",
   "charged": "$0.01",
   "delivered": true,
   "free_to_call": false,
   "date": "2026-08-05",
   "title": "StableMemes delivers a captioned meme for $0.01, charged as quoted",
   "url": "https://whatagentsbuy.com/p/one-cent-meme",
   "service_url": "https://whatagentsbuy.com/s/stablememes.dev"
  },
  {
   "service": "api.bitrefill.com",
   "grade": "A",
   "graded_on": "price honesty",
   "verdict": "Honest",
   "quoted": "$0.003",
   "charged": "$0.003",
   "delivered": true,
   "free_to_call": false,
   "date": "2026-08-07",
   "title": "Bitrefill sells 594 real gift cards to agents and charges a fifth of a cent to browse",
   "url": "https://whatagentsbuy.com/p/bitrefill",
   "service_url": "https://whatagentsbuy.com/s/api.bitrefill.com"
  },
  {
   "service": "blockrun.ai",
   "grade": "A",
   "graded_on": "price honesty",
   "verdict": "Honest",
   "quoted": "$0.002",
   "charged": "$0.002",
   "delivered": true,
   "free_to_call": false,
   "date": "2026-08-07",
   "title": "BlockRun charges the same fifth of a cent for a $0.03 model and a $5 model",
   "url": "https://whatagentsbuy.com/p/blockrun-flat-floor",
   "service_url": "https://whatagentsbuy.com/s/blockrun.ai"
  },
  {
   "service": "pro-api.coinmarketcap.com",
   "grade": "B-",
   "graded_on": "symbol resolution",
   "verdict": null,
   "quoted": null,
   "charged": null,
   "delivered": null,
   "free_to_call": false,
   "date": "2026-08-05",
   "title": "CoinMarketCap returns up to 32 assets for one ticker symbol",
   "url": "https://whatagentsbuy.com/p/ticker-squatters",
   "service_url": "https://whatagentsbuy.com/s/pro-api.coinmarketcap.com"
  },
  {
   "service": "blockrun.ai",
   "grade": "C",
   "graded_on": "free-tier accuracy",
   "verdict": null,
   "quoted": null,
   "charged": null,
   "delivered": null,
   "free_to_call": true,
   "date": "2026-08-07",
   "title": "BlockRun's free tier is real, but two of its six models are the same model",
   "url": "https://whatagentsbuy.com/p/blockrun-free-tier",
   "service_url": "https://whatagentsbuy.com/s/blockrun.ai"
  },
  {
   "service": "mcp.fortclaw.com",
   "grade": "C",
   "graded_on": "getting in at all",
   "verdict": "Partial",
   "quoted": "$0.03",
   "charged": "$0.00",
   "delivered": false,
   "free_to_call": false,
   "date": "2026-08-07",
   "title": "FortClaw quotes honestly and then tells you nothing when you get it wrong",
   "url": "https://whatagentsbuy.com/p/fortclaw-opaque",
   "service_url": "https://whatagentsbuy.com/s/mcp.fortclaw.com"
  },
  {
   "service": "x402datasource.com",
   "grade": "C",
   "graded_on": "data accuracy",
   "verdict": "Partial",
   "quoted": "$0.01",
   "charged": "$0.01",
   "delivered": true,
   "free_to_call": false,
   "date": "2026-08-08",
   "title": "A census API that is accurate in cities and silently wrong in small towns",
   "url": "https://whatagentsbuy.com/p/x402datasource-rural",
   "service_url": "https://whatagentsbuy.com/s/x402datasource.com"
  },
  {
   "service": "api.thetrustlayer.xyz",
   "grade": "C",
   "graded_on": "value for money",
   "verdict": "Partial",
   "quoted": "$0.001",
   "charged": "$0.001",
   "delivered": true,
   "free_to_call": false,
   "date": "2026-08-08",
   "title": "A trust-score API charged me for a lookup that missed, on the address in its own listing",
   "url": "https://whatagentsbuy.com/p/trustlayer-pays-for-a-miss",
   "service_url": "https://whatagentsbuy.com/s/api.thetrustlayer.xyz"
  },
  {
   "service": "mcp.x402.boats",
   "grade": "D",
   "graded_on": "getting in at all",
   "verdict": "Partial",
   "quoted": "$0.10",
   "charged": "$0.00",
   "delivered": false,
   "free_to_call": false,
   "date": "2026-08-06",
   "title": "The biggest earner in the agent economy publishes one price and quotes another",
   "url": "https://whatagentsbuy.com/p/x402-boats",
   "service_url": "https://whatagentsbuy.com/s/mcp.x402.boats"
  },
  {
   "service": "api.x402lint.dev",
   "grade": "D",
   "graded_on": "grading accuracy",
   "verdict": null,
   "quoted": null,
   "charged": null,
   "delivered": null,
   "free_to_call": true,
   "date": "2026-08-08",
   "title": "A rival grader failed the busiest service in the market because it never read the header",
   "url": "https://whatagentsbuy.com/p/grading-the-grader",
   "service_url": "https://whatagentsbuy.com/s/api.x402lint.dev"
  },
  {
   "service": "api.jarvisclaw.ai",
   "grade": "D",
   "graded_on": "getting in at all",
   "verdict": "No goods",
   "quoted": "$0.0017",
   "charged": "$0.00",
   "delivered": false,
   "free_to_call": false,
   "date": "2026-08-08",
   "title": "A listed endpoint that quotes a price and then cannot take the money",
   "url": "https://whatagentsbuy.com/p/jarvisclaw-cannot-settle",
   "service_url": "https://whatagentsbuy.com/s/api.jarvisclaw.ai"
  }
 ]
}