Skill: API contract drift check

x402 resource x402 REST

agent402.tools · agent402.tools · Productivity & Docs

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The 'did this API contract change in a way that breaks our integration?' workflow. Diff two OpenAPI snapshots structurally, lint the new one for agent-readiness regressions, extract the endpoint surface for inventory comparison, validate a known-good payload against the new contract, and summarize s

Price per call 0.008 USDC per call published unit: per call

Calls · 30d 9 counted by the source, no daily split

Buyers · 30d — Observed sending wallets · Base USDC · partial sender history · purchases unverified

Volume · 30d — Observed Base USDC inflows · not attributable or not measured

Inflow growth · 7d — not comparable (baseline under $1 or window incomplete)

Trx · 30d — Observed transfers · not attributable or not measured

Attribution blocked. The payout address is also published by 648 other service(s); the volume cannot be attributed to one of them.

Observed inflows · last 30 days

No inflow observed in this window

The payout address is also published by 648 other service(s); the volume cannot be attributed to one of them.

Observed inflows by window for Skill: API contract drift check.
Window	Observed	Transfers
Last complete day (2026-10-31)	—	—
Last 7 days	—	—
Last 30 days	—	—
Growth, 7d against the 7 before	not comparable

Source: on-chain transfer scan (USDC on Base) Window: 2026-10-02 → 2026-10-31 Scanned: 30/30 days Sample: 0 days with a measurement First seen: never Last update: 2026-10-31

Daily history →. Observed transfers show value arriving at the payout address; they do not establish service revenue.

Blockchain wallets

Full addresses · public payment evidence

Receiving wallets are payment addresses published for this service. Sending wallets transferred funds to an exclusive receiving address; this alone does not prove a purchase or identify an agent.

Receiving wallets · provider payment addresses

All published receiving wallet addresses for Skill: API contract drift check.
Network	Full wallet address	Evidence
Monad	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
EVM chain 4663	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
Optimism	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
Polygon	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
EVM chain 43114	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
Arbitrum	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
EVM chain 1329	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar
Base	0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0	Shared address · activity cannot be assigned to this serviceFrom source record · source: x402_bazaar

Sending wallets · observed counterparties

No sending wallet addresses have been retained for this service. Buyer wallets are unknown; daily totals and reported payer counts do not reveal their addresses.

Coverage includes retained scans only, not every historical transaction. Earlier daily totals cannot recover sender addresses. Sender lists exclude shared receiving wallets, whose transfers could belong to another service. A provider address does not establish wallet ownership.

Competitors & category benchmark

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Closest competitors Productivity & Docs

:workflowName 5,235 calls · 0.01 USDC per call —
Profile view 922 calls · 0.01 USDC per call —
Person dossier 374 calls · 0.001 USDC per call —
Makers 164 calls · 0.02 USDC per call —
Summary 83 calls · 0.02 USDC per call —

Sorted by source-measured calls, not by our opinion. The right-hand figure is observed inflow, which stays empty for peers whose address is shared.

Category benchmark 9,118 services in this category

With a measured call count	6,421 (70.4 %)
With a published price	7,133 (78.2 %)
With attributable inflows	32 (0.4 %)
Observed inflows · 30d	$36,566.28
Median measured calls	2
Median price per call	$0.01