agent402.tools
Developer tools API on Base, Arbitrum, Avalanche, Celo, Monad, Optimism, Polygon and Sei, paid per request with x402.
- Endpoints4,845
- Price per requestfrom $0.001
- Outside payers · 7dn/a
- Answer 4020 of 8
Overview
- Seller wallet
- 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
- Chains
- BaseArbitrumAvalancheCeloMonadOptimismPolygonSei
- Hosts
- agent402.tools
- CategoriesCategoriesAssigned automatically from the seller’s own listing text. A filter hint, not a claim about the service.
- Developer tools1,088Market data872Onchain data704Other577AI models416Web data296Media272Identity240Search144Agents124Security96Commerce16
- First seen
- 2026-10-05 · last seen 2026-10-06
Endpoints
EndpointsDescriptions are the seller's own words from the catalogue and are not checked by us. A listed price is a registration, not an observed charge.https://agent402.tools/api/feedback/summary
What paying buyers said about each tool on this server: good and bad counts and the number of distinct wallets behind them, over a window you choose. Every verdict counted here was written by the wallet that paid for th…
AvalancheOnchain datan/a/ request
2026-09-30
https://agent402.tools/api/feedback/summary
What paying buyers said about each tool on this server: good and bad counts and the number of distinct wallets behind them, over a window you choose. Every verdict counted here was written by the wallet that paid for th…
SeiOnchain datan/a/ request
2026-09-30
https://agent402.tools/api/feedback/summary
What paying buyers said about each tool on this server: good and bad counts and the number of distinct wallets behind them, over a window you choose. Every verdict counted here was written by the wallet that paid for th…
MonadOnchain datan/a/ request
2026-09-30
https://agent402.tools/api/feedback/summary
What paying buyers said about each tool on this server: good and bad counts and the number of distinct wallets behind them, over a window you choose. Every verdict counted here was written by the wallet that paid for th…
PolygonOnchain datan/a/ request
2026-09-30
https://agent402.tools/api/feedback/summary
What paying buyers said about each tool on this server: good and bad counts and the number of distinct wallets behind them, over a window you choose. Every verdict counted here was written by the wallet that paid for th…
OptimismOnchain datan/a/ request
2026-09-30
https://agent402.tools/api/feedback/summary
What paying buyers said about each tool on this server: good and bad counts and the number of distinct wallets behind them, over a window you choose. Every verdict counted here was written by the wallet that paid for th…
CeloOnchain datan/a/ request
2026-09-30
https://agent402.tools/api/feedback/summary
What paying buyers said about each tool on this server: good and bad counts and the number of distinct wallets behind them, over a window you choose. Every verdict counted here was written by the wallet that paid for th…
ArbitrumOnchain datan/a/ request
2026-09-30
https://agent402.tools/api/fema-disasters
Recent FEMA disaster declarations for a US state (openFEMA): title, incident type, declaration type, and date - the federal emergency picture by state, de-duplicated by disaster. Live gov data, no key.
PolygonOthern/a/ request
2026-09-30
https://agent402.tools/api/fema-disasters
Recent FEMA disaster declarations for a US state (openFEMA): title, incident type, declaration type, and date - the federal emergency picture by state, de-duplicated by disaster. Live gov data, no key.
MonadOthern/a/ request
2026-09-30
https://agent402.tools/api/fema-disasters
Recent FEMA disaster declarations for a US state (openFEMA): title, incident type, declaration type, and date - the federal emergency picture by state, de-duplicated by disaster. Live gov data, no key.
AvalancheOthern/a/ request
2026-09-30
https://agent402.tools/api/fema-disasters
Recent FEMA disaster declarations for a US state (openFEMA): title, incident type, declaration type, and date - the federal emergency picture by state, de-duplicated by disaster. Live gov data, no key.
ArbitrumOthern/a/ request
2026-09-30
https://agent402.tools/api/fema-disasters
Recent FEMA disaster declarations for a US state (openFEMA): title, incident type, declaration type, and date - the federal emergency picture by state, de-duplicated by disaster. Live gov data, no key.
OptimismOthern/a/ request
2026-09-30
https://agent402.tools/api/fema-disasters
Recent FEMA disaster declarations for a US state (openFEMA): title, incident type, declaration type, and date - the federal emergency picture by state, de-duplicated by disaster. Live gov data, no key.
SeiOthern/a/ request
2026-09-30
https://agent402.tools/api/fema-disasters
Recent FEMA disaster declarations for a US state (openFEMA): title, incident type, declaration type, and date - the federal emergency picture by state, de-duplicated by disaster. Live gov data, no key.
CeloOthern/a/ request
2026-09-30
https://agent402.tools/api/fetch-json
Fetch a public URL and return its JSON response body as parsed JSON, with the final URL after redirects and the content type. GET only, up to 2MB, private and internal addresses refused (including after redirects). The …
OptimismWeb datan/a/ request
2026-10-06
https://agent402.tools/api/fetch-json
Fetch a public URL and return its JSON response body as parsed JSON, with the final URL after redirects and the content type. GET only, up to 2MB, private and internal addresses refused (including after redirects). The …
CeloWeb datan/a/ request
2026-10-06
https://agent402.tools/api/fetch-json
Fetch a public URL and return its JSON response body as parsed JSON, with the final URL after redirects and the content type. GET only, up to 2MB, private and internal addresses refused (including after redirects). The …
AvalancheWeb datan/a/ request
2026-10-06
https://agent402.tools/api/fetch-json
Fetch a public URL and return its JSON response body as parsed JSON, with the final URL after redirects and the content type. GET only, up to 2MB, private and internal addresses refused (including after redirects). The …
SeiWeb datan/a/ request
2026-10-06
https://agent402.tools/api/fetch-json
Fetch a public URL and return its JSON response body as parsed JSON, with the final URL after redirects and the content type. GET only, up to 2MB, private and internal addresses refused (including after redirects). The …
ArbitrumWeb datan/a/ request
2026-10-06
https://agent402.tools/api/fetch-json
Fetch a public URL and return its JSON response body as parsed JSON, with the final URL after redirects and the content type. GET only, up to 2MB, private and internal addresses refused (including after redirects). The …
MonadWeb datan/a/ request
2026-10-06
https://agent402.tools/api/fetch-json
Fetch a public URL and return its JSON response body as parsed JSON, with the final URL after redirects and the content type. GET only, up to 2MB, private and internal addresses refused (including after redirects). The …
PolygonWeb datan/a/ request
2026-10-06
https://agent402.tools/api/finance
Financial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a loan).
CeloOthern/a/ request
2026-09-30
https://agent402.tools/api/finance
Financial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a loan).
AvalancheOthern/a/ request
2026-09-30
https://agent402.tools/api/finance
Financial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a loan).
MonadOthern/a/ request
2026-09-30
https://agent402.tools/api/finance
Financial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a loan).
ArbitrumOthern/a/ request
2026-09-30
https://agent402.tools/api/finance
Financial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a loan).
SeiOthern/a/ request
2026-09-30
https://agent402.tools/api/finance
Financial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a loan).
OptimismOthern/a/ request
2026-09-30
https://agent402.tools/api/finance
Financial math. op: "compound" (future value of principal at a rate) or "loan" (monthly payment + total for a loan).
PolygonOthern/a/ request
2026-09-30
https://agent402.tools/api/food-recalls
Search FDA food recall / enforcement records (openFDA): recalling firm, classification, reason (allergen, contamination, etc.), distribution, and dates. Live FDA data, no key.
CeloAI modelsn/a/ request
2026-09-30
https://agent402.tools/api/food-recalls
Search FDA food recall / enforcement records (openFDA): recalling firm, classification, reason (allergen, contamination, etc.), distribution, and dates. Live FDA data, no key.
AvalancheAI modelsn/a/ request
2026-09-30
https://agent402.tools/api/food-recalls
Search FDA food recall / enforcement records (openFDA): recalling firm, classification, reason (allergen, contamination, etc.), distribution, and dates. Live FDA data, no key.
OptimismAI modelsn/a/ request
2026-09-30
https://agent402.tools/api/food-recalls
Search FDA food recall / enforcement records (openFDA): recalling firm, classification, reason (allergen, contamination, etc.), distribution, and dates. Live FDA data, no key.
MonadAI modelsn/a/ request
2026-09-30
https://agent402.tools/api/food-recalls
Search FDA food recall / enforcement records (openFDA): recalling firm, classification, reason (allergen, contamination, etc.), distribution, and dates. Live FDA data, no key.
SeiAI modelsn/a/ request
2026-09-30
https://agent402.tools/api/food-recalls
Search FDA food recall / enforcement records (openFDA): recalling firm, classification, reason (allergen, contamination, etc.), distribution, and dates. Live FDA data, no key.
ArbitrumAI modelsn/a/ request
2026-09-30
https://agent402.tools/api/food-recalls
Search FDA food recall / enforcement records (openFDA): recalling firm, classification, reason (allergen, contamination, etc.), distribution, and dates. Live FDA data, no key.
PolygonAI modelsn/a/ request
2026-09-30
https://agent402.tools/api/forecast-eval
Backtest a forecasting method on the input series by holding out the last `testSize` observations, forecasting them, and computing MAPE (mean absolute percentage error) + RMSE (root mean squared error). Lets an agent pi…
AvalancheMarket datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-eval
Backtest a forecasting method on the input series by holding out the last `testSize` observations, forecasting them, and computing MAPE (mean absolute percentage error) + RMSE (root mean squared error). Lets an agent pi…
PolygonMarket datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-eval
Backtest a forecasting method on the input series by holding out the last `testSize` observations, forecasting them, and computing MAPE (mean absolute percentage error) + RMSE (root mean squared error). Lets an agent pi…
ArbitrumMarket datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-eval
Backtest a forecasting method on the input series by holding out the last `testSize` observations, forecasting them, and computing MAPE (mean absolute percentage error) + RMSE (root mean squared error). Lets an agent pi…
MonadMarket datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-eval
Backtest a forecasting method on the input series by holding out the last `testSize` observations, forecasting them, and computing MAPE (mean absolute percentage error) + RMSE (root mean squared error). Lets an agent pi…
SeiMarket datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-eval
Backtest a forecasting method on the input series by holding out the last `testSize` observations, forecasting them, and computing MAPE (mean absolute percentage error) + RMSE (root mean squared error). Lets an agent pi…
OptimismMarket datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-eval
Backtest a forecasting method on the input series by holding out the last `testSize` observations, forecasting them, and computing MAPE (mean absolute percentage error) + RMSE (root mean squared error). Lets an agent pi…
CeloMarket datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt
Holt's linear trend method - level + trend (no seasonality). Two smoothing parameters: alpha (level) and beta (trend). Forecast extrapolates as a straight line from the last fitted level along the last fitted trend, so …
PolygonWeb datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt
Holt's linear trend method - level + trend (no seasonality). Two smoothing parameters: alpha (level) and beta (trend). Forecast extrapolates as a straight line from the last fitted level along the last fitted trend, so …
SeiWeb datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt
Holt's linear trend method - level + trend (no seasonality). Two smoothing parameters: alpha (level) and beta (trend). Forecast extrapolates as a straight line from the last fitted level along the last fitted trend, so …
AvalancheWeb datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt
Holt's linear trend method - level + trend (no seasonality). Two smoothing parameters: alpha (level) and beta (trend). Forecast extrapolates as a straight line from the last fitted level along the last fitted trend, so …
MonadWeb datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt
Holt's linear trend method - level + trend (no seasonality). Two smoothing parameters: alpha (level) and beta (trend). Forecast extrapolates as a straight line from the last fitted level along the last fitted trend, so …
ArbitrumWeb datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt
Holt's linear trend method - level + trend (no seasonality). Two smoothing parameters: alpha (level) and beta (trend). Forecast extrapolates as a straight line from the last fitted level along the last fitted trend, so …
OptimismWeb datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt
Holt's linear trend method - level + trend (no seasonality). Two smoothing parameters: alpha (level) and beta (trend). Forecast extrapolates as a straight line from the last fitted level along the last fitted trend, so …
CeloWeb datan/a/ request
2026-09-30
https://agent402.tools/api/forecast-holt-winters
Holt-Winters triple exponential smoothing - level + trend + seasonal component. Use for series with a repeating cycle (weekly retail traffic, monthly utility usage, quarterly revenue). Additive seasonality (constant amp…
PolygonDeveloper toolsn/a/ request
2026-09-30
Evidence
Answers HTTP 402
Answers HTTP 402Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.0 of 8
0 of 8 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-09-19
x402-style payments, last 7 days (Base)
x402-style paymentsMethod: counted when the transaction carries a signed USDC authorization (EIP-3009), the settlement x402's exact scheme uses. Some non-x402 gasless sends use it too.unknown
unknown. the 7-day payments read on Base did not complete (ranges over 10000 blocks are not supported on free plan)
window ended 2026-10-06
By chain
| Chain | Seller wallet | Endpoints | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 603 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. the 7-day payments read on Base did not complete (ranges over 10000 blocks are not supported on free plan) |
| Arbitrum | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 606 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Avalanche | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 606 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Celo | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 606 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Monad | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 606 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Optimism | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 606 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Polygon | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 606 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
| Sei | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 606 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
One seller wallet, each chain read on its own. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.
Pricing
The price each endpoint registered in the x402 catalogue. A listed price is a registration, not an observed charge.
Claim this merchant
Sign a message from the payout address 0xabf4fa…e2a9d0 to claim this page or download its payment ledger. Claiming proves control of the payout key. It says nothing about the service behind the address, and it does not change how this merchant is ranked. No email, no account: the signature is the whole credential, and signing a message costs no gas and moves nothing.
Data CC-BY-4.0, attribution: data by satohub.ai. Data: x402-list.com (CC BY 4.0). Data as of 2026-10-06. Appearing here is not an endorsement. Check an endpoint with the doctor.