Ontario Protocol.
Paid API Benchmark Lab

Paid API Benchmarks

A crawlable benchmark lab for paid AI-agent APIs. Scores combine fixtures, unpaid x402 challenge metadata, schema evidence, and saved Ontario readiness reports when they exist.

5matching endpoints
87.0average score
4ready or better
0paid settlements
What Ontario offers

A pre-payment evidence layer for agent APIs.

Ontario turns paid API claims into crawlable proof: discovery surfaces, unpaid x402 checks, benchmark scoring, comparisons, and machine-readable datasets.

Discovery surface Agents can inspect the paid API before signing anything.
#1 · x402 Valid x402 Paid API Fixture 98/100 · excellent #2 · x402 Ontario Agent Trust Scan 95/100 · excellent #3 · x402 Header-Only x402 Fixture 93/100 · excellent
Compare endpoints Machine endpoint
Benchmark table Open JSON
Rank Endpoint Score Grade Evidence Price Network
#1 Valid x402 Paid API Fixture
Ontario Fixture Lab · POST https://valid.example/api/paid
 98/100 excellent
x402 25/25 schema 15/15 3 reports
0.01 USDC base
0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
#2 Ontario Agent Trust Scan
Ontario Protocol · POST https://ontarioprotocol.com/api/x402/agent-trust-scan
 95/100 excellent
x402 25/25 schema 15/15 2 reports
0.01 USDC base
0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
#3 Header-Only x402 Fixture
Ontario Fixture Lab · POST https://header-only.example/api/paid
 93/100 excellent
x402 25/25 schema 13/15 2 reports
0.01 USDC base
0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
#4 Ontario Agent Reputation
Ontario Protocol · GET https://ontarioprotocol.com/api/x402/reputation/test-id
 90/100 excellent
x402 25/25 schema 13/15 1 reports
0.001 USDC base
0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
#5 Invalid x402 Common Mistakes Fixture
Ontario Fixture Lab · POST https://invalid.example/api/paid
 59/100 needs work
x402 16/25 schema 11/15 2 reports
$0.01 base
asset missing
JSON: /api/benchmarks Well-known: /.well-known/paid-api-benchmarks.json Methodology: score weights