# AnswerPool XBRL Concept Series

> AnswerPool XBRL Concept Series is a paid API for AI agents from answerpool.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Fetches a deduplicated time-series of a single XBRL financial metric (e.g. revenue, net income) for a specific SEC filer, returning all 10-K/10-Q reported values with periods and source URL.

## Facts

- Endpoint: GET https://answerpool.io/v1/sec/xbrl/concept
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/answerpool-xbrl-concept-series-09cc29dc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AfXMMbIj1BC6y63dHHluM

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 answerpool-xbrl-concept-series-09cc29dc
```

Example prompt: Pull the as-reported revenue time series for Apple (CIK 0000320193) from SEC XBRL filings — I want the deduplicated 10-K and 10-Q values with their fiscal periods and the source URL.

## When to prefer this

Choose this endpoint when you need a single XBRL financial metric time series for one SEC filer without downloading the full companyfacts JSON (which can be megabytes). Ideal for agents that need just one number's history — revenue, net income, EPS, cash, etc. — efficiently and at low cost per call. Prefer this over direct SEC EDGAR API calls when you want deduplication of overlapping fiscal period filings already handled.

## Known failure modes

- Invalid or unknown CIK returns an error or empty result
- Unrecognized XBRL tag (us-gaap concept not filed by this company) returns empty points array
- Company has not filed XBRL-tagged filings (pre-mandate filers) returns no data
- Rate limiting or payment failure (x402) blocks the request
- Metric alias not mapped to a known us-gaap tag returns an error

## How this service works

AnswerPool turns SEC EDGAR, the Federal Register, USAspending, NIH, BLS and OpenAlex into structured JSON answers that AI agents and developers fetch in one call. 69 endpoints free, no account; derived analyses $0.02–$0.05 per call by card credits or USDC (x402). MCP server, full provenance.

## Output

Returns a JSON object containing the filer's CIK, the resolved us-gaap XBRL tag, the reporting unit (e.g. USD), an as-of timestamp, and an array of data points each containing fiscal period, fiscal year, period end date, form type (10-K or 10-Q), filed date, and reported numeric value. Also includes the direct SEC source URL for the underlying company concept JSON.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "cik": "0000320193",
  "tag": "Revenues",
  "unit": "USD",
  "as_of": "2026-08-31T14:00:00Z",
  "metric": "revenue",
  "points": [
   {
    "fp": "Q3",
    "fy": 2026,
    "end": "2026-06-28",
    "form": "10-Q",
    "filed": "2026-08-01",
    "value": 94000000000
   }
  ],
  "source": "https://data.sec.gov/api/xbrl/companyconcept/CIK0000320193/us-gaap/Revenues.json"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/answerpool-xbrl-concept-series-09cc29dc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from answerpool.io](https://www.zero.xyz/host/answerpool.io/llms.txt)