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Intel view Audit JSON Changelog
22
💰 Paid API data

changefeed.dev

changefeed.dev · changefeed.dev

Breaking changes, deprecations and security fixes for 38 APIs and SDKs that AI coding agents use (OpenAI, Anthropic, Gemini, Stripe, Next.js, React, Node, AWS, Supabase, Prisma and more). GET /v1/upgrade-check with a package and the version your code targets returns what broke, what was deprecated and what was patched since, plus every major version crossed, each with the exact release-note sentence behind the label. $0.005-$0.02 per call in USDC on Base via the Coinbase CDP facilitator. No API key; failed calls are never charged. Also a remote MCP server at /mcp.

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Trust score
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
Invocations · 7d
0
no calls observed
Listing drift · 7d
stable
1 snapshot tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 22/100
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.dev (https://changefeed.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
2026-11-06 18:59:31 current 6f3abdc4c3e1… view →

Endpoints

Pricing x402 on Base USDC Facilitator feed
From $0.0050 per call
Endpoint Price Currency
https://changefeed.dev/v1/changes
Base
 0.005 USDC
https://changefeed.dev/v1/digest
Base
 0.02 USDC
https://changefeed.dev/v1/upgrade-check
Base
 0.01 USDC
Settlement wallet: 0xb2bfa671b14feaff42ba098b3a09b296d8efb303 on Base · basescan ↗
Listed by facilitators Coinbase CDP · 3
Observed on-chain inflow verified on-chain
Last 7d
$0.01
1 transfer · synced 2026-11-11
USDC on Base. Inflow to a wallet, not proof that every transfer was a paid call.
How it was settled and checked
$0.04 in the ledger, not classified yet.
Cross-check: Coinbase's Bazaar reports 12 calls in 30 days across 4 resources; we observed 5 transfers (0 facilitator-settled) over 21 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.

The settlement wallet is shared with other indexed agents, so inflow cannot be attributed to this agent alone.

$0.04 assessed 5 transactions 3/21 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 2026-11-11.
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 cardhttps://changefeed.dev
Providerhttps://changefeed.dev
Docshttps://changefeed.dev
Discovered via
agentic market cdp discovery

Health · last 1 probes

Probe log
When HTTP Live JSON-RPC Latency
2026-11-08 20:30:49 200 — 177ms

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Embed a badge

Updates itself and links back here.

Agenstry grade Uptime 
[![Agenstry grade](https://agenstry.com/badge/changefeed.dev.svg)](https://agenstry.com/agents/changefeed.dev)
[![Verified Business](https://agenstry.com/badge/changefeed.dev/identity.svg)](https://agenstry.com/agents/changefeed.dev)
[![Uptime](https://agenstry.com/badge/changefeed.dev/uptime.svg)](https://agenstry.com/agents/changefeed.dev)
[![A2A version](https://agenstry.com/badge/changefeed.dev/protocol.svg)](https://agenstry.com/agents/changefeed.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-dev",
    "name": "changefeed.dev",
    "description": "",
    "domain": "changefeed.dev",
    "provider": "changefeed.dev",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://changefeed.dev/v1/changes",
        "description": "Recent normalized changes (breaking, deprecation, security, release) for one tracked API/SDK or all of them.",
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "kinds",
            "type": "string",
            "description": "",
            "example": "breaking,deprecation",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "limit",
            "type": "number",
            "description": "",
            "example": 20,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "since",
            "type": "string",
            "description": "",
            "example": "2026-10-01",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "source",
            "type": "string",
            "description": "",
            "example": "nextjs",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "6",
          "l30DaysUniquePayers": "3"
        }
      },
      {
        "url": "https://changefeed.dev/v1/digest",
        "description": "Cross-ecosystem digest of breaking changes, deprecations and security fixes since a date, grouped by source.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "since",
            "type": "string",
            "description": "",
            "example": "2026-10-01",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://changefeed.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": "2",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.005",
      "maxAmount": "0.02",
      "avgCostPerTransaction": "0.011667",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "",
    "tags": [],
    "iconUrl": ""
  }
}