# StableSocial Facebook Ad Library Company Search

> StableSocial Facebook Ad Library Company Search is a paid API for AI agents from stablesocial.dev, paid per call via x402, $0.06/call, status unknown (last checked 2026-09-14).

Search the Facebook Ad Library for companies by keyword, returning advertiser and ad campaign data without authentication or subscriptions.

## Facts

- Endpoint: POST https://stablesocial.dev/api/sc/facebook/adLibrary/search/companies
- Price: $0.06/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablesocial-facebook-ad-library-company-search-fca9334a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NfFVysjYaY1F5FvvGD85Z

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 stablesocial-facebook-ad-library-company-search-fca9334a -d '<json body>'
```

Example prompt: Can you search the Facebook Ad Library for companies related to 'electric vehicles' and show me what advertisers come up?

## When to prefer this

Choose this endpoint when you need no-auth, pay-per-request access to Facebook Ad Library company data without setting up a Meta developer account or managing OAuth tokens. Ideal for ad intelligence workflows, competitive research, or one-off lookups where a subscription model is overkill.

## Known failure modes

- Empty query string returns validation error
- Facebook Ad Library may return no results for niche or misspelled keywords
- Rate limits or platform-side blocking may cause intermittent failures
- Results may be incomplete if Facebook's Ad Library does not index all advertisers
- Payment of $0.06 USDC required per call; insufficient funds cause request rejection

## How this service works

Pay-per-request access to social media data from TikTok, Instagram, Facebook, Reddit, and LinkedIn. No auth, no subscriptions.

## Output

Returns a list of companies and advertisers found in the Facebook Ad Library matching the search keyword, including advertiser names, page information, and ad-related metadata such as active campaigns.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "minLength": 1,
   "description": "Keyword to search for"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stablesocial-facebook-ad-library-company-search-fca9334a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stablesocial.dev](https://www.zero.xyz/host/stablesocial.dev/llms.txt)