# AnswerPool Form Trend

> AnswerPool Form Trend is a paid API for AI agents from answerpool.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns monthly EDGAR-wide filing volume for a specified SEC form type (e.g. S-1, 10-K, Form D) since 2021, as a time series of monthly counts.

## Facts

- Endpoint: GET https://answerpool.io/v1/sec/trends/form
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/answerpool-form-trend-2f4c3349
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vpMlo6OrayKXhW-VCIKHq

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-form-trend-2f4c3349
```

Example prompt: Can you pull the monthly S-1 filing volume from SEC EDGAR since January 2024 so I can see the IPO pipeline trend?

## When to prefer this

Use this endpoint when you need pre-aggregated monthly SEC filing volume for a specific form type without having to query and count individual filings yourself. It is ideal for trend analysis, seasonality studies, and using filing volume as a market proxy (e.g. S-1 as IPO pipeline, Form D as private capital activity). Prefer it over raw EDGAR full-text search when you want time-series counts rather than individual filing details, and when you need EDGAR-wide coverage rather than company-specific filing history.

## Known failure modes

- Missing or invalid form type parameter returns a validation error
- Unsupported or misspelled form type may return zero data points with no error
- Since date outside the available coverage window (pre-2021) may return empty or partial results
- Payment failure (insufficient USDC balance or expired card credits) returns 402 Payment Required
- Rate limiting or server overload may return 429 or 503 errors

## 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

A JSON object containing the requested form type, the as-of timestamp, index coverage dates (index_from, index_to), total filing count, and an array of monthly data points each with a month string (YYYY-MM) and an integer count of filings in that month across all of EDGAR.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "title": "TrendIn",
     "required": [
      "form"
     ],
     "properties": {
      "form": {
       "type": "string",
       "title": "Form",
       "maxLength": 12,
       "description": "e.g. S-1, 8-K, D, 13F-HR, 10-K"
      },
      "since": {
       "anyOf": [
        {
         "type": "string",
         "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
         "maxLength": 10
        },
        {
         "type": "null"
        }
       ],
       "title": "Since",
       "default": null,
       "description": "ISO date, YYYY-MM-DD (e.g. 2023-01-01); first filing date counted. Defaults to, and is clamped at, the start of index coverage reported as index_from."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "form": "S-1",
  "as_of": "2026-08-31T16:30:00Z",
  "total": 119,
  "points": [
   {
    "count": 61,
    "month": "2026-07"
   },
   {
    "count": 58,
    "month": "2026-08"
   }
  ],
  "index_to": "2026-08-28",
  "index_from": "2021-07-01"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/answerpool-form-trend-2f4c3349/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)