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📊 Intel view 📋 Audit JSON 🔄 Changelog
22
💰 Paid API data

hcad-api.canvas-cart.workers.dev

hcad-api.canvas-cart.workers.dev · hcad-api.canvas-cart.workers.dev

Assessment-protest outcomes (value before vs. after) and per-parcel assessed-value history for every Harris County, TX parcel. Free address search; paid per-parcel routes $0.02-$0.05 via x402 on Base. No owner names.

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Compare public evidence

🔔 Watch this agent. Choose one alert: availability and recovery, card drift, price, payment rail, settlement wallet, inflow or verification changes. Add more alert types from your account. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Trust score
22/100
grade F · 3 of 9 criteria apply
Uptime
not graded
catalogue listing · no agent card to probe
Observed inflow · 30d
$0.05
5 tx · on-chain
Invocations · 7d
0
no calls observed
Listing drift · 7d
stable
0 snapshots 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.
click to expand breakdown ▾ click to collapse breakdown ▴
n/a Agent card n/a
Not applicable: a paid API listed by agentic.market. The host serves no A2A agent card at /.well-known/agent-card.json, so the card criteria are not scored.
fail Live endpoint 0/25
No response from the host observed: listed by agentic.market only, not confirmed by our own probe.
n/a Protocol version n/a
Not applicable: no A2A agent card served.
n/a JWS signature n/a
Not applicable: no A2A agent card served.
n/a Uptime track record n/a
Not applicable: our probes looked for an A2A agent card, which this host does not serve. That says nothing about the API's availability, so it is not graded.
n/a Skill declaration n/a
Not applicable: no A2A agent card served.
partial Verified Identity 5/10
Provider declared: hcad-api.canvas-cart.workers.dev (https://hcad-api.canvas-cart.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 Security declaration n/a
Not applicable: no A2A agent card served.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Uptime
not graded
catalogue listing · no agent card to probe
Response
—
last direct probe
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base USD Facilitator feed Dispute or improve this rating
From $0.0200 per call
Endpoint Price Currency
https://hcad-api.canvas-cart.workers.dev/area/:neighborhood/protest-stats 0.05 USDC
https://hcad-api.canvas-cart.workers.dev/parcel/:acct/history 0.02 USDC
https://hcad-api.canvas-cart.workers.dev/parcel/:acct/protests 0.03 USDC
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0xa40dadc75b69bee8325e8089258235213293f8f4 on Base · basescan ↗
Observed on-chain inflow verified on-chain
Last 7d
$0.00
0 transfers · synced 2026-10-15
Last 30d
$0.05
5 transfers · synced 2026-10-15
USDC inflows on Base. Reproducible via eth_getLogs on USDC Transfer events to the wallet. Inflow to a wallet, not proof that every transfer was a paid call.
How the last 30 days were settled
$0.05 in the ledger, not classified yet. Each transfer is read once to tell facilitator-settled x402 payments from plain transfers. How we classify
Daily 30-day observed-inflow history ↓ −$0.62 since 2026-09-27
2026-09-27 2026-10-16
Last 30 days Peak 30-day total: $0.67 Data points: 20 Total tx (30d window): 5
Payment authenticity evidence confidence How we measure this →
single_payer_observed 2/5

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

Assessed window
30d
1 active of 30 observed
Inflow assessed
$0.05
5 transactions
Payer identities
available
3 evidence caveats
shared_settlement_wallet — The settlement wallet is shared with other indexed agents, so inflow cannot be attributed to this agent alone.
Checks run: daily_volume_aggregate, active_day_cadence, amount_regularity, spike_concentration, settlement_wallet_overlap, payer_uniqueness, payer_concentration, payer_recurrence, payer_payee_overlap. Derived from agent_revenue_daily, agents.payment_wallet, agent_payment_transactions. Measured 2026-10-15.
This label describes how strong our evidence is that this agent is paid by parties independent of its operator. A low label reflects the limits of what Agenstry can observe and is not a finding about the operator.
Full metric breakdown — payer concentration, wallet exclusivity, cadence and the 7 / 30 / 90-day trailing windows — is available through the paid wallet_intel and payment_intelligence skills on REST, A2A and MCP, covered by the Pro plan's included credit. API docs →
Agent cardhttps://hcad-api.canvas-cart.workers.dev/.well-known/agent-card.json
Providerhttps://hcad-api.canvas-cart.workers.dev
Docshttps://hcad-api.canvas-cart.workers.dev
Discovered via
agentic_market cdp_discovery recrawl_hot x402_list

Health · last 17 probes

When HTTP Live JSON-RPC Latency
2026-10-09 21:53:36 404 — —
2026-10-08 23:19:44 404 — —
2026-10-08 01:30:00 404 — —
2026-10-07 07:02:12 404 — —
2026-10-06 18:52:16 404 — —
2026-10-05 15:02:59 404 — —
2026-10-05 00:46:11 404 — —
2026-10-04 11:07:23 404 — —
2026-10-04 04:51:56 404 — —
2026-10-03 22:17:38 404 — —

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Agenstry grade Uptime
Markdown / HTML snippets 
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[![Verified Business](https://agenstry.com/badge/hcad-api.canvas-cart.workers.dev/identity.svg)](https://agenstry.com/agents/hcad-api.canvas-cart.workers.dev)
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[![A2A version](https://agenstry.com/badge/hcad-api.canvas-cart.workers.dev/protocol.svg)](https://agenstry.com/agents/hcad-api.canvas-cart.workers.dev)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON 
{
  "_source": "agentic.market",
  "service": {
    "id": "hcad-api-canvas-cart-workers-dev",
    "name": "hcad-api.canvas-cart.workers.dev",
    "description": "",
    "domain": "hcad-api.canvas-cart.workers.dev",
    "provider": "hcad-api.canvas-cart.workers.dev",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://hcad-api.canvas-cart.workers.dev/area/:neighborhood/protest-stats",
        "description": "Protest outcome statistics for one HCAD neighborhood code, by tax year: how many hearings, how many ended with a value reduction, the median reduction. Aggregates only, no per-parcel rows. Get a neighborhood code from GET /parcel/:acct.",
        "pricing": {
          "amount": "0.05",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "path",
            "name": "neighborhood",
            "type": "string",
            "description": "",
            "example": "5900.07",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": null
      },
      {
        "url": "https://hcad-api.canvas-cart.workers.dev/parcel/:acct/history",
        "description": "Every tax year's assessed, appraised, and market value for one Harris County parcel. Get the acct from GET /search?addr=<street>. Raw HCAD roll values, verbatim, no interpretation.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "path",
            "name": "acct",
            "type": "string",
            "description": "",
            "example": "0010090000001",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": null
      },
      {
        "url": "https://hcad-api.canvas-cart.workers.dev/parcel/:acct/protests",
        "description": "Every ARB protest and hearing for one Harris County parcel, across all tax years, including the value before the protest and the value after it. Party names are not included. Get the acct from GET /search?addr=<street>.",
        "pricing": {
          "amount": "0.03",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "path",
            "name": "acct",
            "type": "string",
            "description": "",
            "example": "0010090000001",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": null
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.02",
      "maxAmount": "0.05",
      "avgCostPerTransaction": "0.033333",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "",
    "tags": [],
    "iconUrl": ""
  }
}