💰 Paid API verification

CertBeforePay

certbeforepay.com · certbeforepay.com

CertBeforePay is a pay-per-check API for AI agents. Before an agent pays a wallet, loads a skill or MCP server, or trusts a peer, it can call CertBeforePay over x402 (USDC on Base, no account). Routes include a wallet check against the ScamSniffer scam/phishing list, an OWASP-mapped self-check, a skill/MCP gate, and a short-lived signed Agent Trust Certificate of the scan result. The certificate is not a legal CA or PKI. The wallet check is a scam/phishing signal, not an OFAC/sanctions screen.

Conformance

60/100

grade C · 3 of 9 criteria apply

Uptime

not graded

catalogue listing · no agent card to probe

Observed inflow · 30d

not yet measured

wallet declared · scan pending

Dispute or improve this rating

C

Conformance score: 60/100

Catalogue listing, not an A2A agent: a paid API listed by x402_list. Scored on the 3 criteria that apply (24 of 40 points, scaled to 100); the A2A card criteria do not apply.

Show breakdown Hide breakdown

partial Live endpoint 15/25

Our probe received an HTTP 402 payment challenge from the host: live, but paid.

partial Verified Identity 5/10

Provider declared: certbeforepay.com (https://certbeforepay.com). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.

How to earn +5 points

Verify your domain ownership

Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.

Docs

pass Freshness + modern flags 4/5

seen in upstream source within 0d

n/a Agent card · Protocol version · JWS signature · Uptime track record · Skill declaration · Security declaration

Activity

last 24h · 0 invocations No personal data recorded

No activity in the last 7 days.

Listing history

1 snapshot

Snapshots

Agent card snapshots
Captured	Hash	Snapshot
2026-11-12 18:58:41 current	`684e29f64203…`	view →

Endpoints

Pricing x402 on Base USDC Verified live · 402 challenge

From $0.0020 per call

Endpoint	Price	Currency
`https://certbeforepay.com/v1/gate` Base · live 402	0.015	USDC
`https://certbeforepay.com/v1/feed` Base · live 402	0.002	USDC
`https://certbeforepay.com/v1/self-check` Base · live 402	0.05	USDC
`https://certbeforepay.com/v1/cert/issue` Base · declared in manifest	—	USDC
`https://certbeforepay.com/v1/peer/attest` Base · declared in manifest	—	USDC
`https://certbeforepay.com/v1/peer/challenge` Base · declared in manifest	—	USDC
`https://certbeforepay.com/v1/wallet/check` Base · declared in manifest	—	USDC

Try it ↗

Settlement wallet: 0xfcae7e8373264acf7f7d00e9d0171671dcdb095c on Base · basescan ↗

Listed by facilitators Coinbase CDP · 7

Observed on-chain inflow verified on-chain

Last 7d

                  $0.19
                

13 transfers · synced 2026-11-12

USDC on Base. Inflow to a wallet, not proof that every transfer was a paid call.

How it was settled and checked

$0.19 in the ledger, not classified yet.

Cross-check: Coinbase's Bazaar reports 3 calls in 30 days across 3 resources; we observed 13 transfers (0 facilitator-settled) over 7 of 30 scanned days. Neither counter is assumed correct.

Reproducible via eth_getLogs on USDC Transfer events to the wallet. How we classify

Payment authenticity How we measure this →

Single payer observed 2/5

Payer identities observed; a single payer accounts for effectively all observed volume.

$0.19 assessed 13 transactions 4/7 days active · 30d window Payer identities available

A low label reflects what we can observe, not a finding about the operator.

How this was checked

0 evidence caveats · measured 2026-11-13.
Checks: daily volume aggregate, active day cadence, amount regularity, spike concentration, settlement wallet overlap, payer uniqueness, payer concentration, payer recurrence, payer payee overlap.
Sources: agent revenue daily, agents payment wallet, agent payment transactions.

Payer concentration and 7 / 30 / 90-day windows: wallet_intel, payment_intelligence · included in Pro

Agent card	`https://certbeforepay.com`
Provider	https://certbeforepay.com
Docs	https://certbeforepay.com

Discovered via

agentic market x402 list

Health · last 1 probes

Probe log

When	HTTP	Live JSON-RPC	Latency
2026-11-13 01:30:48	404	—	—

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Embed a badge

Updates itself and links back here.

[![Agenstry grade](https://agenstry.com/badge/certbeforepay.com.svg)](https://agenstry.com/agents/certbeforepay.com)
[![Verified Business](https://agenstry.com/badge/certbeforepay.com/identity.svg)](https://agenstry.com/agents/certbeforepay.com)
[![Uptime](https://agenstry.com/badge/certbeforepay.com/uptime.svg)](https://agenstry.com/agents/certbeforepay.com)
[![A2A version](https://agenstry.com/badge/certbeforepay.com/protocol.svg)](https://agenstry.com/agents/certbeforepay.com)

Audit evidence

JSON for vendor reviews. Signed copy verifies against our JWKS.

audit.json audit.json (JWS-signed) verification history

Raw agent card JSON

{
  "_source": "x402_list",
  "slug": "certbeforepay",
  "endpoint_count": 5,
  "attribution": "Data: x402-list.com (CC BY 4.0)"
}