# Signal Ledger Financial Filing Coverage Check

> Signal Ledger Financial Filing Coverage Check is a paid API for AI agents from payai.43-135-4-66.sslip.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Deterministically verifies whether a supplied financial filing text contains the required statements, reporting period, metric basis, and source provenance needed for reliable analysis, before committing to a full audit.

## Facts

- Endpoint: POST https://payai.43-135-4-66.sslip.io/v1/filings/coverage-check
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signal-ledger-financial-filing-coverage-check-d1ef6ed2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FZ1yOE5-tNGu6li7i-NRj

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability signal-ledger-financial-filing-coverage-check-d1ef6ed2 -d '<json body>'
```

Example prompt: Before I run a full audit, can you check whether this 10-K text from Apple Inc. (filed 2024-11-01, retrieved from https://www.sec.gov/Archives/edgar/data/320193/000032019324000123/aapl-20240928.htm, covering FY2024, GAAP basis) actually contains the financial statements, reporting period, and source info needed for reliable analysis?

## When to prefer this

Choose this endpoint when you need a cheap ($0.005), fast, deterministic pre-screening step before committing to an expensive full financial audit or AI-based analysis. It is ideal as a gatekeeping step in automated pipelines that process large volumes of filings and need to filter out incomplete or unprovable documents. Prefer it over manual review or AI-based coverage checks when reproducibility and cost predictability matter.

## Known failure modes

- reportText shorter than 200 characters returns a 400 validation error
- reportText exceeding 100,000 characters is rejected
- Invalid or missing required fields return schema validation errors
- sourceUrl not matching ^https?:// pattern causes a 400 error
- Coverage check returns false positives if filing text is garbled or truncated
- Non-English filings may return incomplete coverage results if statements are not clearly labeled

## How this service works

Financial statement coverage check / 财报可分析性检查. Verify whether supplied filing text contains the statements, period, metric basis and original source needed for reliable analysis before buying a full audit. Deterministic; no AI.

## Output

A deterministic pass/fail or partial-coverage assessment indicating whether the supplied filing text contains the required financial statements (e.g. income statement, balance sheet, cash flow), a valid reporting period, a declared metric basis, and traceable original source information — enabling the caller to decide whether to proceed with a full paid analysis.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "company": {
   "type": "string",
   "maxLength": 120,
   "description": "Optional company name"
  },
  "reportText": {
   "type": "string",
   "maxLength": 100000,
   "minLength": 200,
   "description": "Plain-text 10-K, 10-Q, annual report, quarterly report or financial statement supplied by the caller"
  },
  "sourceContext": {
   "type": "object",
   "properties": {
    "sourceUrl": {
     "type": "string",
     "pattern": "^https?://",
     "maxLength": 2048,
     "description": "Original regulator or issuer filing URL"
    },
    "sourceName": {
     "type": "string",
     "maxLength": 160
    },
    "metricBasis": {
     "type": "string",
     "maxLength": 160
    },
    "publishedAt": {
     "type": "string",
     "maxLength": 40,
     "description": "ISO 8601 publication timestamp"
    },
    "retrievedAt": {
     "type": "string",
     "maxLength": 40,
     "description": "ISO 8601 retrieval timestamp"
    },
    "reportPeriod": {
     "type": "string",
     "maxLength": 160
    },
    "crossCheckedSources": {
     "type": "array",
     "items": {
      "type": "string",
      "maxLength": 2048
     },
     "maxItems": 5
    }
   },
   "description": "Optional provenance metadata for report-period, freshness, metric-basis and source traceability checks",
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signal-ledger-financial-filing-coverage-check-d1ef6ed2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from payai.43-135-4-66.sslip.io](https://www.zero.xyz/host/payai.43-135-4-66.sslip.io/llms.txt)