💰 Paid API verification

ZERO Payment Guard

zero-payment-guard.worker.beacon.host · zero-payment-guard.worker.beacon.host

Read-only payment safety checks for agents on Base: verify a tx paid native Circle USDC to a recipient ($0.002), and preflight any x402 endpoint before paying - asset is canonical Circle USDC, price/scheme/timeout sanity, payTo contract/balance ($0.005). Free samples at /sample/*.

Conformance

22/100

grade F · 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

F

Conformance score: 22/100

Catalogue listing, not an A2A agent: a paid API listed by x402_list. Scored on the 3 criteria that apply (9 of 40 points, scaled to 100); the A2A card criteria do not apply.

Show breakdown Hide breakdown

fail Live endpoint 0/25

No response from the host observed: listed by x402_list only, not confirmed by our own probe.

partial Verified Identity 5/10

Provider declared: zero-payment-guard.worker.beacon.host (https://zero-payment-guard.worker.beacon.host). 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
2026-11-13 16:50:53 current	`0191782fa2fc…`	view →

Endpoints

Pricing x402 on Base USD Facilitator feed

From $0.0020 per call

No per-endpoint prices published.

Try it ↗

Settlement wallet: 0x857b162e7817d385ed1dc895c3823bee42d0ebe5 on Base · basescan ↗

Listed by facilitators PayAI · 7

Agent card	`https://zero-payment-guard.worker.beacon.host`
Provider	https://zero-payment-guard.worker.beacon.host
Docs	https://zero-payment-guard.worker.beacon.host

Discovered via

x402 list

Health · last 0 probes

Probe log

When	HTTP	Live JSON-RPC	Latency
No direct probes in the last 30 days.

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Embed a badge

Updates itself and links back here.

[![Agenstry grade](https://agenstry.com/badge/zero-payment-guard.worker.beacon.host.svg)](https://agenstry.com/agents/zero-payment-guard.worker.beacon.host)
[![Verified Business](https://agenstry.com/badge/zero-payment-guard.worker.beacon.host/identity.svg)](https://agenstry.com/agents/zero-payment-guard.worker.beacon.host)
[![Uptime](https://agenstry.com/badge/zero-payment-guard.worker.beacon.host/uptime.svg)](https://agenstry.com/agents/zero-payment-guard.worker.beacon.host)
[![A2A version](https://agenstry.com/badge/zero-payment-guard.worker.beacon.host/protocol.svg)](https://agenstry.com/agents/zero-payment-guard.worker.beacon.host)

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": "zero-payment-guard",
  "endpoint_count": 2,
  "attribution": "Data: x402-list.com (CC BY 4.0)"
}