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📊 Intel view 📋 Audit JSON 🔄 Changelog
65
💰 Paid API

stackbill.app

stackbill.app · stackbill.app

Generate a finished, professional invoice PDF from JSON — recipient and line items in, a ready-to-send application/pdf out. Layouts: standard, legal, creative. Totals and tax are computed server-side so the numbers always add up. First payment auto-creates a wallet profile (token + API key in response headers); returning wallets get sequential invoice numbering and can save a sender letterhead. USD only.

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Verify the domain stackbill.app via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
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🔔 Watch this agent. Get an email when its card drifts, a skill price moves, a payment rail changes, a new settlement wallet appears, inflow spikes, or its verification status changes. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Our probe of this card is currently failing
Last probe error: response not JSON
Last attempt: 2026-09-08 16:36 Last success: 2026-09-08 Status: 200
Trust score
34/100
grade F · 9 criteria
Uptime
accumulating
2/5 direct probes · 30d
Observed inflow · 30d
$1.84
13 tx · on-chain
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
0 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 34/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
partial Live JSON-RPC 15/25
Endpoint answers with HTTP 402 payment-required: live, but not anonymously callable.
How to earn +10 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.
Docs →
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
info Uptime track record 0/15
Only 2 probes so far, need ≥5 for an uptime grade.
fail Skill declaration 0/10
No skills declared in card. Hard to route to.
How to earn +10 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: stackbill.app (https://stackbill.app). 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
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.

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
accumulating
2 direct probes · 30d
Response
—
no direct probe retained
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base per call USDC Facilitator feed Dispute or improve this rating
From $0.1000 per call
Endpoint Price Currency
https://stackbill.app/routes/x402/invoice-from-data 0.1 USDC
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0x1f2a484ef654d49c58c625b09e78b538501d652d · basescan ↗
Observed on-chain inflow verified on-chain
Last 7d
$0.00
0 calls
Last 30d
$1.84
13 calls
USDC inflows on Base. Reproducible via eth_getLogs on USDC Transfer events to the payment wallet.
Daily 30-day observed-inflow history ↑ +20.3% trend
2026-08-01 2026-09-07
Peak day: $1.84 Data points: 38 Total tx (30d window): 13
Payment authenticity evidence confidence How we measure this →
insufficient_evidence_of_independent_payers 1/5

Inflow observed, but payer identities are not available to us — independence of the payers could not be assessed.

Assessed window
30d
1 active of 4 observed
Inflow assessed
$0.87
5 transactions
Payer identities
not held
4 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. Derived from agent_revenue_daily, agents.payment_wallet. Measured 2026-08-27.
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 get_agent_full and payment_intelligence skills on REST, A2A and MCP. API docs →
Agent cardhttps://stackbill.app/.well-known/agent-card.json
Providerhttps://stackbill.app
Docshttps://stackbill.app
Discovered via
agentic_market cdp_discovery recrawl_hot recrawl_warm

Health · last 0 probes

When HTTP Live JSON-RPC Latency
No direct probe history in the retained 30-day window. Upstream catalogue observations do not count as uptime probes.

Who's calling this agent 30d

1 interactions captured (impressions + lookups + A2A calls)

By AI host (caller_kind) · top 3
curl 1 (100%)
Caller geography · top 3
NL 1
Via which API surface · top 3
rest 1

Public teaser: top-3 per dimension only. Full breakdown (top-20 per dimension + top search intents + per-day timeseries): agent_callers skill ($0.05/call, $0 on Enterprise). Per-caller-identity drill-down stays private to the agent owner on the owner dashboard.

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

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

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": "stackbill-app",
    "name": "stackbill.app",
    "description": "",
    "domain": "stackbill.app",
    "provider": "stackbill.app",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://stackbill.app/routes/x402/invoice-from-data",
        "description": "Generate a finished, professional invoice PDF from JSON \u2014 recipient and line items in, a ready-to-send application/pdf out. Layouts: standard, legal, creative. Totals and tax are computed server-side so the numbers always add up. First payment auto-creates a wallet profile (token + API key in response headers); returning wallets get sequential invoice numbering and can save a sender letterhead. USD only.",
        "pricing": {
          "amount": "0.1",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "body",
            "name": "currency",
            "type": "string",
            "description": "",
            "example": "USD",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "dueDate",
            "type": "string",
            "description": "",
            "example": "2026-08-01",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "invoiceNumber",
            "type": "string",
            "description": "",
            "example": "INV-2026-042",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "lineItems",
            "type": "array",
            "description": "",
            "example": [],
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "notes",
            "type": "string",
            "description": "",
            "example": "Payment due within 30 days.",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "recipient",
            "type": "object",
            "description": "",
            "example": null,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "sender",
            "type": "object",
            "description": "",
            "example": null,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "body",
            "name": "taxRate",
            "type": "number",
            "description": "",
            "example": 7.5,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "Stack Billing",
        "tags": [
          "invoice",
          "invoice-pdf",
          "invoice-generator",
          "billing",
          "pdf-generation"
        ],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.1",
      "maxAmount": "0.1",
      "avgCostPerTransaction": "0.1",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "Stack Billing",
    "tags": [
      "invoice",
      "invoice-pdf",
      "invoice-generator",
      "billing",
      "pdf-generation"
    ],
    "iconUrl": ""
  }
}