Catalogue listing, not an A2A agent: a paid API listed by agentic.market. 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 agentic.market only, not confirmed by our own probe.

partial Verified Identity 5/10

Provider declared: changefeed.anthonyzilar.workers.dev (https://changefeed.anthonyzilar.workers.dev). 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
2026-11-04 23:07:17 current	`76b3d5b082ac…`	view →

Endpoints

Pricing x402 on Base USDC Facilitator feed

From $0.0100 per call

Endpoint	Price	Currency
`https://changefeed.anthonyzilar.workers.dev/v1/upgrade-check` Base	0.01	USDC

Try it ↗

Settlement wallet: 0xb2bfa671b14feaff42ba098b3a09b296d8efb303 on Base · basescan ↗

Listed by facilitators Coinbase CDP · 1

Observed on-chain inflow verified on-chain

Last 7d

                  $0.02
                

2 transfers · synced 2026-11-05

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

How it was settled and checked

$0.02 in the ledger, not classified yet.

Cross-check: Coinbase's Bazaar reports 1 call in 30 days; we observed 2 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 →

Concentrated payers 3/5

Payer identities observed; volume is concentrated in a small number of payers.

Most observed volume landed on a single day of the window.

$0.02 assessed 2 transactions 1/7 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

2 evidence caveats · measured 2026-11-05.
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://changefeed.anthonyzilar.workers.dev`
Provider	https://changefeed.anthonyzilar.workers.dev
Docs	https://changefeed.anthonyzilar.workers.dev

Discovered via

agentic market

Health · last 1 probes

Probe log

When	HTTP	Live JSON-RPC	Latency
2026-11-04 23:09:40	200	—	187ms

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Embed a badge

Updates itself and links back here.

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

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": "agentic.market",
  "service": {
    "id": "changefeed-anthonyzilar-workers-dev",
    "name": "changefeed.anthonyzilar.workers.dev",
    "description": "",
    "domain": "changefeed.anthonyzilar.workers.dev",
    "provider": "changefeed.anthonyzilar.workers.dev",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://changefeed.anthonyzilar.workers.dev/v1/upgrade-check",
        "description": "Given a package and the version an agent's code targets, returns breaking changes and deprecations between that version and the latest tracked release.",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "from",
            "type": "string",
            "description": "",
            "example": "14.2.0",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "package",
            "type": "string",
            "description": "",
            "example": "next",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.01",
      "maxAmount": "0.01",
      "avgCostPerTransaction": "0.01",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "",
    "tags": [],
    "iconUrl": ""
  }
}