Endpoint · onchainPOSTx402.fairseal.io /v1/notarize
Anchor an AI agent decision or audit record to Base mainnet.
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Anchor an AI agent decision or audit record to Base mainnet. Submit {schema, payload_hash (SHA-256 hex, 64 chars), metadata}; service queues into a Merkle batch and returns a receipt with pending_anchor status immediately. Full Merkle proof and on-chain anchor_tx available via free GET /v1/notarize/:receipt_id after batch anchors (within batch_threshold receipts or 120s). Include Idempotency-Key header to prevent double-charges on retry.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.02 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://x402.fairseal.io/v1/notarize
Seen
first 18 days ago · last 4 days ago
33 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.658 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.342: 0.142 uncertain ? + 0.200 short ? · 0.142 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.00 | 0.000 | 0.000 | −0.200 | 0 | |
| liveness it answered at all |
0.60 | 1.00 | 0.764 | 0.458 | 0 | −0.142 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.658 | gap to 1.000 = 0.342 · 0.200 short · 0.142 uncertain | 0.658 | −0.200 | −0.142 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.000 latency p95
+ 0.600 × 0.764 liveness
+ 0.200 × 1.000 price stability
= 0.658 → UNRATED: 26 of 30 paid calls weights 2026.09.6 · 26 samples · seed cap_01M2MBX8232DMEC2578Q11GCCY|2026-08-30T18:10:25.680Z|2026.09.6
Verify it yourself
npx teppi-check https://x402.fairseal.io/v1/notarizecurl -s https://api.teppi.xyz/v1/trust/cap_01M2MBX8232DMEC2578Q11GCCY