# Vellum SEC Change Signal

> Vellum SEC Change Signal is a paid API for AI agents from x402-data-api.x402agent.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Returns a binary changed/unchanged signal for SEC filings since a specified date, including filing count, form types, and the latest EDGAR filing.

## Facts

- Endpoint: GET https://x402-data-api.x402agent.workers.dev/sec-change-signal?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vellum-sec-change-signal-dbee0fff
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kPRPnbVBHZSRm3VM1bpe_

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 vellum-sec-change-signal-dbee0fff
```

Example prompt: Has Apple filed anything new with the SEC in the last 14 days — just give me a true or false on whether there's been a change, the filing count, form types, and the latest EDGAR filing.

## When to prefer this

Choose this endpoint when you need a fast, lightweight boolean signal about whether a company has new SEC activity — ideal for triggering downstream workflows, portfolio monitors, or alert systems without pulling full filing content. Prefer this over vellum-filing-delta when you only need a yes/no changed flag rather than detailed financial fact deltas, and over vellum-sec-latest when you need to check across a date window rather than fetching a single most-recent filing.

## Known failure modes

- Unknown ticker symbol returns an error or empty result
- Invalid CIK format causes a 400-level response
- If neither ticker nor CIK is supplied, the request fails validation
- Future or unparseable 'since' date may cause an error
- Company with no recent filings returns changed: false with count 0
- Rate limits or EDGAR downtime may cause upstream failures

## How this service works

Binary SEC change signal since a date: changed true or false, filing count, form types and the latest official EDGAR filing.

## Output

A structured response indicating whether any SEC filings have been made since the specified date (changed: true/false), the total count of new filings, the distinct form types submitted (e.g. 10-K, 8-K, 4), and metadata about the most recent official EDGAR filing including form type, filing date, and accession number.

## 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",
     "required": [],
     "properties": {
      "cik": {
       "type": "string",
       "description": "SEC CIK number, alternative to ticker"
      },
      "days": {
       "type": "string",
       "description": "Lookback in days when since is omitted (default 7)"
      },
      "since": {
       "type": "string",
       "description": "Window start as YYYY-MM-DD"
      },
      "ticker": {
       "type": "string",
       "description": "Stock ticker symbol, e.g. AAPL"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vellum-sec-change-signal-dbee0fff/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-data-api.x402agent.workers.dev](https://www.zero.xyz/host/x402-data-api.x402agent.workers.dev/llms.txt)