Endpoint · actionPOSTagent402.tools /api/captcha-generate
Mint a stateless captcha challenge to gate your OWN endpoint: returns a human prompt plus a salted sha256 answer hash you keep and verify later (sha256(salt + normalized answer)…
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Mint a stateless captcha challenge to gate your OWN endpoint: returns a human prompt plus a salted sha256 answer hash you keep and verify later (sha256(salt + normalized answer) === answerHash) - no server state, no shared secret. Types: math (arithmetic) or alnum (character code), difficulty 1–3. Deterministic tooling for running bot protection, not defeating it.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.001 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://agent402.tools/api/captcha-generate
MCP server on this host: io.github.MikeyPetrillo/agent402
Seen
first 29 days ago · last 9 hr ago
53 free handshakes
Payment
Pays through
x402 · MPP evm, tempo
Offered on?
algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=, eip155:10, eip155:1329, Polygon, eip155:143, Arbitrum, eip155:42220, Avalanche, Robinhood Chain, Base USDC, Solana, stellar:pubnet, Tempo USDC.e
Listed on?
Polygon, Arbitrum, Avalanche, Base, Solana
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.762 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held back by sample size, not by the seller · gap to 1.000 is 0.238: 0.182 uncertain ? + 0.056 short ? · 0.038 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.72 | 0.188 | 0.038 | −0.056 | −0.107 | |
| liveness it answered at all |
0.60 | 1.00 | 0.875 | 0.525 | 0 | −0.075 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.762 | gap to 1.000 = 0.238 · 0.056 short · 0.182 uncertain | 0.762 | −0.056 | −0.182 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.188 latency p95
+ 0.600 × 0.875 liveness
+ 0.200 × 1.000 price stability
= 0.762 → UNRATED: 49 of 30 paid calls weights 2026.09.6 · 49 samples · seed cap_01M1RD9B3XM4Q3JW4J6HN71PNG|2026-09-01T01:37:36.029Z|2026.09.6
Verify it yourself
npx teppi-check https://agent402.tools/api/captcha-generatecurl -s https://api.teppi.xyz/v1/trust/cap_01M1RD9B3XM4Q3JW4J6HN71PNG