agent402.tools
Base, Arbitrum, Avalanche, Celo, Monad, Optimism, Polygon, Sei · payout 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0
Answers HTTP 402
0 of 8 probed endpoints answered HTTP 402 with a parseable payment payload
checked 2026-09-19
Method: one unpaid request per listed endpoint. A 402 with a payment payload a client could parse counts. Nothing is paid.
x402-style payments, last 7 days (Base)
2324 x402-style payments from 88 distinct payers, $45.65 USDC in the last 7 days (Base, exact read)
window ended 2026-10-05
- Payments
- 2,324
- Outside payers
- 88
- USDC
- 45.65
All USDC received at this payout address: $45.66 (includes payments that are not x402)
Method: 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.
Reading: x402-style payments to this payout address on Base, exact read of the 7 days to 2026-10-05, every block of the window: 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; Sato Hub's own payer wallets are left out
Delivery is not measured. We never send a payment, so we never observe what a paid call returns. Unknown means we hold no reading, not that anything failed.
Chains · one payout address, each chain read on its own
| Chain | Payout address | Listings | Answers 402 | x402-style payments |
|---|---|---|---|---|
| Base | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 600 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | 2324 x402-style payments from 88 distinct payers, $45.65 USDC in the last 7 days (Base, exact read) |
| Arbitrum | 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 | 603 | 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 | 603 | 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 | 603 | 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 | 603 | 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 | 603 | 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 | 603 | 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 | 603 | 0 of 1 probed endpoints answered HTTP 402 with a parseable payment payload 2026-09-19 | unknown. not measured on this chain yet |
- Hosts
- agent402.tools
- Listings
- 4,821 registered in the x402 catalogue
- Price range
- $0.0010 to $2.00 per call, as registered
- Categories (auto)
- Developer tools (1096), Market data (840), Onchain data (704), Other (585), Inference (416), Web data (312), Media (248), Identity (224), Search (136), Agents (124), Security (120), Commerce (16)
- First seen
- 2026-10-05 · last seen 2026-10-05
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.
Registrations · 4,821
| Endpoint | Chain | Category | Price | Catalogue date |
|---|---|---|---|---|
https://agent402.tools/api/a2a-card-fetch Discover and fetch a site's A2A (Agent2Agent protocol) Agent Card - tries /.well-known/agent-card.json then /.well-known/agent.json (or fetches a direct .json URL as-is) - and validate it against the spec v0.3 structura… | Sei | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-fetch Discover and fetch a site's A2A (Agent2Agent protocol) Agent Card - tries /.well-known/agent-card.json then /.well-known/agent.json (or fetches a direct .json URL as-is) - and validate it against the spec v0.3 structura… | Avalanche | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-fetch Discover and fetch a site's A2A (Agent2Agent protocol) Agent Card - tries /.well-known/agent-card.json then /.well-known/agent.json (or fetches a direct .json URL as-is) - and validate it against the spec v0.3 structura… | Optimism | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-fetch Discover and fetch a site's A2A (Agent2Agent protocol) Agent Card - tries /.well-known/agent-card.json then /.well-known/agent.json (or fetches a direct .json URL as-is) - and validate it against the spec v0.3 structura… | Polygon | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-fetch Discover and fetch a site's A2A (Agent2Agent protocol) Agent Card - tries /.well-known/agent-card.json then /.well-known/agent.json (or fetches a direct .json URL as-is) - and validate it against the spec v0.3 structura… | Celo | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-fetch Discover and fetch a site's A2A (Agent2Agent protocol) Agent Card - tries /.well-known/agent-card.json then /.well-known/agent.json (or fetches a direct .json URL as-is) - and validate it against the spec v0.3 structura… | Monad | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-fetch Discover and fetch a site's A2A (Agent2Agent protocol) Agent Card - tries /.well-known/agent-card.json then /.well-known/agent.json (or fetches a direct .json URL as-is) - and validate it against the spec v0.3 structura… | Arbitrum | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-validate Validate an A2A (Agent2Agent protocol) Agent Card: required fields, skill shape, transport names, capability flags - spec v0.3 structural core. Returns errors, interop warnings, and a normalized summary (skills, interfa… | Optimism | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-validate Validate an A2A (Agent2Agent protocol) Agent Card: required fields, skill shape, transport names, capability flags - spec v0.3 structural core. Returns errors, interop warnings, and a normalized summary (skills, interfa… | Celo | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-validate Validate an A2A (Agent2Agent protocol) Agent Card: required fields, skill shape, transport names, capability flags - spec v0.3 structural core. Returns errors, interop warnings, and a normalized summary (skills, interfa… | Polygon | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-validate Validate an A2A (Agent2Agent protocol) Agent Card: required fields, skill shape, transport names, capability flags - spec v0.3 structural core. Returns errors, interop warnings, and a normalized summary (skills, interfa… | Avalanche | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-validate Validate an A2A (Agent2Agent protocol) Agent Card: required fields, skill shape, transport names, capability flags - spec v0.3 structural core. Returns errors, interop warnings, and a normalized summary (skills, interfa… | Arbitrum | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-validate Validate an A2A (Agent2Agent protocol) Agent Card: required fields, skill shape, transport names, capability flags - spec v0.3 structural core. Returns errors, interop warnings, and a normalized summary (skills, interfa… | Monad | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/a2a-card-validate Validate an A2A (Agent2Agent protocol) Agent Card: required fields, skill shape, transport names, capability flags - spec v0.3 structural core. Returns errors, interop warnings, and a normalized summary (skills, interfa… | Sei | Agents | unknown | 2026-09-30 |
https://agent402.tools/api/action-gate Deterministic preflight check for a proposed AI agent action - a tool call, payment, fetch, or write - before it executes. Evaluates up to four independent checks (prompt-injection scan on action text/untrusted text, UR… | Sei | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/action-gate Deterministic preflight check for a proposed AI agent action - a tool call, payment, fetch, or write - before it executes. Evaluates up to four independent checks (prompt-injection scan on action text/untrusted text, UR… | Avalanche | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/action-gate Deterministic preflight check for a proposed AI agent action - a tool call, payment, fetch, or write - before it executes. Evaluates up to four independent checks (prompt-injection scan on action text/untrusted text, UR… | Monad | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/action-gate Deterministic preflight check for a proposed AI agent action - a tool call, payment, fetch, or write - before it executes. Evaluates up to four independent checks (prompt-injection scan on action text/untrusted text, UR… | Polygon | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/action-gate Deterministic preflight check for a proposed AI agent action - a tool call, payment, fetch, or write - before it executes. Evaluates up to four independent checks (prompt-injection scan on action text/untrusted text, UR… | Arbitrum | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/action-gate Deterministic preflight check for a proposed AI agent action - a tool call, payment, fetch, or write - before it executes. Evaluates up to four independent checks (prompt-injection scan on action text/untrusted text, UR… | Optimism | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/action-gate Deterministic preflight check for a proposed AI agent action - a tool call, payment, fetch, or write - before it executes. Evaluates up to four independent checks (prompt-injection scan on action text/untrusted text, UR… | Celo | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/add-time Add (or subtract) a duration to a date. duration like "2d", "-3h", "1w 2d", "90m". Returns the resulting UTC ISO timestamp. | Monad | Other | unknown | 2026-09-30 |
https://agent402.tools/api/add-time Add (or subtract) a duration to a date. duration like "2d", "-3h", "1w 2d", "90m". Returns the resulting UTC ISO timestamp. | Avalanche | Other | unknown | 2026-09-30 |
https://agent402.tools/api/add-time Add (or subtract) a duration to a date. duration like "2d", "-3h", "1w 2d", "90m". Returns the resulting UTC ISO timestamp. | Optimism | Other | unknown | 2026-09-30 |
https://agent402.tools/api/add-time Add (or subtract) a duration to a date. duration like "2d", "-3h", "1w 2d", "90m". Returns the resulting UTC ISO timestamp. | Celo | Other | unknown | 2026-09-30 |
https://agent402.tools/api/add-time Add (or subtract) a duration to a date. duration like "2d", "-3h", "1w 2d", "90m". Returns the resulting UTC ISO timestamp. | Polygon | Other | unknown | 2026-09-30 |
https://agent402.tools/api/add-time Add (or subtract) a duration to a date. duration like "2d", "-3h", "1w 2d", "90m". Returns the resulting UTC ISO timestamp. | Arbitrum | Other | unknown | 2026-09-30 |
https://agent402.tools/api/add-time Add (or subtract) a duration to a date. duration like "2d", "-3h", "1w 2d", "90m". Returns the resulting UTC ISO timestamp. | Sei | Other | unknown | 2026-09-30 |
https://agent402.tools/api/address-label Label a known EVM address from a curated, committed dataset: major stablecoin + token contracts (the USDC and USDG contracts of every EVM chain we settle on, USDC on Ethereum, USDT, DAI, WETH, WBTC), DEX routers (Uniswa… | Celo | Onchain data | unknown | 2026-10-05 |
https://agent402.tools/api/address-label Label a known EVM address from a curated, committed dataset: major stablecoin + token contracts (the USDC and USDG contracts of every EVM chain we settle on, USDC on Ethereum, USDT, DAI, WETH, WBTC), DEX routers (Uniswa… | Avalanche | Onchain data | unknown | 2026-10-05 |
https://agent402.tools/api/address-label Label a known EVM address from a curated, committed dataset: major stablecoin + token contracts (the USDC and USDG contracts of every EVM chain we settle on, USDC on Ethereum, USDT, DAI, WETH, WBTC), DEX routers (Uniswa… | Sei | Onchain data | unknown | 2026-10-05 |
https://agent402.tools/api/address-label Label a known EVM address from a curated, committed dataset: major stablecoin + token contracts (the USDC and USDG contracts of every EVM chain we settle on, USDC on Ethereum, USDT, DAI, WETH, WBTC), DEX routers (Uniswa… | Monad | Onchain data | unknown | 2026-10-05 |
https://agent402.tools/api/address-label Label a known EVM address from a curated, committed dataset: major stablecoin + token contracts (the USDC and USDG contracts of every EVM chain we settle on, USDC on Ethereum, USDT, DAI, WETH, WBTC), DEX routers (Uniswa… | Optimism | Onchain data | unknown | 2026-10-05 |
https://agent402.tools/api/address-label Label a known EVM address from a curated, committed dataset: major stablecoin + token contracts (the USDC and USDG contracts of every EVM chain we settle on, USDC on Ethereum, USDT, DAI, WETH, WBTC), DEX routers (Uniswa… | Polygon | Onchain data | unknown | 2026-10-05 |
https://agent402.tools/api/address-label Label a known EVM address from a curated, committed dataset: major stablecoin + token contracts (the USDC and USDG contracts of every EVM chain we settle on, USDC on Ethereum, USDT, DAI, WETH, WBTC), DEX routers (Uniswa… | Arbitrum | Onchain data | unknown | 2026-10-05 |
https://agent402.tools/api/age Compute a precise age (years, months, days) from a birth date to today (or a given date), plus total days. | Optimism | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/age Compute a precise age (years, months, days) from a birth date to today (or a given date), plus total days. | Sei | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/age Compute a precise age (years, months, days) from a birth date to today (or a given date), plus total days. | Avalanche | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/age Compute a precise age (years, months, days) from a birth date to today (or a given date), plus total days. | Polygon | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/age Compute a precise age (years, months, days) from a birth date to today (or a given date), plus total days. | Celo | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/age Compute a precise age (years, months, days) from a birth date to today (or a given date), plus total days. | Monad | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/age Compute a precise age (years, months, days) from a birth date to today (or a given date), plus total days. | Arbitrum | Developer tools | unknown | 2026-09-30 |
https://agent402.tools/api/amortization Build the full per-period amortization schedule for a fully-amortizing loan. Each row reports the period number, payment, the principal vs. interest split for that payment, and the remaining balance after that payment. … | Monad | Other | unknown | 2026-09-30 |
https://agent402.tools/api/amortization Build the full per-period amortization schedule for a fully-amortizing loan. Each row reports the period number, payment, the principal vs. interest split for that payment, and the remaining balance after that payment. … | Optimism | Other | unknown | 2026-09-30 |
https://agent402.tools/api/amortization Build the full per-period amortization schedule for a fully-amortizing loan. Each row reports the period number, payment, the principal vs. interest split for that payment, and the remaining balance after that payment. … | Arbitrum | Other | unknown | 2026-09-30 |
https://agent402.tools/api/amortization Build the full per-period amortization schedule for a fully-amortizing loan. Each row reports the period number, payment, the principal vs. interest split for that payment, and the remaining balance after that payment. … | Avalanche | Other | unknown | 2026-09-30 |
https://agent402.tools/api/amortization Build the full per-period amortization schedule for a fully-amortizing loan. Each row reports the period number, payment, the principal vs. interest split for that payment, and the remaining balance after that payment. … | Polygon | Other | unknown | 2026-09-30 |
https://agent402.tools/api/amortization Build the full per-period amortization schedule for a fully-amortizing loan. Each row reports the period number, payment, the principal vs. interest split for that payment, and the remaining balance after that payment. … | Sei | Other | unknown | 2026-09-30 |
https://agent402.tools/api/amortization Build the full per-period amortization schedule for a fully-amortizing loan. Each row reports the period number, payment, the principal vs. interest split for that payment, and the remaining balance after that payment. … | Celo | Other | unknown | 2026-09-30 |
https://agent402.tools/api/annuity Present and future value of a level annuity (equal periodic payments). Supports an ordinary annuity (payments at period end) and an annuity-due (payments at period start). | Avalanche | Other | unknown | 2026-09-30 |
Descriptions 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.
Data CC-BY-4.0, attribution: data by satohub.ai. Collector run 2026-10-05. Appearing here is not an endorsement. Check an endpoint with the doctor.