Endpoint · otherPOSTphion.systems /v1/paid/trust/a2a-transaction-bridge
Bind A2A task identity to a transaction while preserving explicit authority gaps
Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.004 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
URL
https://phion.systems/v1/paid/trust/a2a-transaction-bridge
MCP server on this host: systems.phion/evidence-engine
Seen
first 12 days ago · last 4 days ago
21 free handshakes
Payment
Pays through
x402
Offered on?
Polygon, Arbitrum, Base USDC, Solana
Listed on?
Polygon, Arbitrum, Base, Solana
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.775 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 0.225: 0.184 uncertain ? + 0.041 short ? · 0.025 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.60 | 1.00 | 0.693 | 0.416 | 0 | −0.184 | |
| latency p95 it answered as fast as its class |
0.20 | 0.80 | 0.797 | 0.159 | −0.041 | 0 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.775 | gap to 1.000 = 0.225 · 0.041 short · 0.184 uncertain | 0.775 | −0.041 | −0.184 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.600 × 0.693 liveness
+ 0.200 × 0.797 latency p95
+ 0.200 × 1.000 price stability
= 0.775 → UNRATED: 20 of 30 paid calls weights 2026.09.6 · 20 samples · seed cap_01M33T9MA73WMK6TJENC53KN9F|2026-09-03T19:37:39.367Z|2026.09.6
Verify it yourself
npx teppi-check https://phion.systems/v1/paid/trust/a2a-transaction-bridgecurl -s https://api.teppi.xyz/v1/trust/cap_01M33T9MA73WMK6TJENC53KN9F