Rank #8 · x402 · onchain-data

Base wallet balances

What does this Base wallet hold? ETH, USDC and about 25 widely held Base tokens, plus up to 20 ERC-20 contracts you name, with symbol, decimals, raw and formatted amounts and the block number read, live from Base RPC. Required: address. $0.002 USDC on Base. Failed read, no charge. No account, no API key. Base mainnet only; no prices or USD values; tokens outside the list and your extras are not discovered. By Ontario Protocol.

Agent decision Excellent

Payment test mode Unpaid challenge only

Evidence source fixture reports

91/100 benchmark score

excellent grade

1 report rows

0 paid settlements

Endpoint Surface

Request

GET https://ontarioprotocol.com/api/x402/base/balances

Price

0.002 USDC

Rail

exact / base

x402 manifest OpenAPI Benchmark JSON

Score Breakdown

Uptime 20/20

Availability is estimated from benchmark fixture observations; no paid retry is made.

X402 Payment Correctness 25/25

Payment correctness checks the unpaid challenge shape and declared x402 requirements, not settlement.

Schema Quality 15/15

Schema quality rewards crawler-readable manifests, OpenAPI coverage, and catalog metadata.

Price Clarity 15/15

Price clarity rewards machine-parseable atomic pricing and a human-readable USDC display value.

Network Asset Clarity 10/10

Network and asset clarity checks whether agents can choose the correct chain and token before signing.

Report History 6/15

Report history rewards signed evidence, repeat observations, and fresh readiness reports.

Payment Safety

Payment header signed

False

Facilitator settle called

False

Spends money

False

Report History

Source: fixture_reports. Matching: target_url exact, then normalized origin.

Report	Source	Grade	Score	Verified	Integrity
`fixture_ontario-base-balances`	fixture report	pending	100/100	2026-10-25T07:49:36+00:00	False