# Biblioteca de Anúncios — MCP server on mcp.ai
> Discover who is advertising on Instagram and Facebook about a topic, and read each ad's copy, call to action and landing page. Public data from Meta's ad library, hosted by the platform, no credentials required.

By: mcp.ai · official
Page: https://mcp.ai/ad_library

## Connect (MCP protocol)
Remote MCP endpoint (HTTP, streamable): https://api.mcp.ai/p_ad_library?ms=1788152220000
Add it as a custom/remote MCP connector, then authenticate when prompted.

## REST API (no MCP client required)
Every tool is also a REST endpoint, authed with a workspace API key.
Discover: GET https://api.mcp.ai/api/ad_library/_endpoints   # public; lists every endpoint
Call:     POST https://api.mcp.ai/api/ad_library/<endpoint>
  Authorization: Bearer sk_live_…   # create one at https://mcp.ai/settings/api-keys
  Content-Type: application/json
  Body: { …args }   →   { "ok": true, "tool": "<id>", "result": { … } }

## Developer docs
How to use (MCP or REST), markdown: https://mcp.ai/ad_library/skill.md
Postman collection (v2.1): https://mcp.ai/ad_library/postman.json

## Tools
- ad_library_company_ads(page_id: string, country?: string, limit?: integer, cursor?: string, page_ids?: string[]) — List every ad one specific advertiser is running, given its `page_id` (get it from ad_library_search_advertisers). Use it to map a single competitor's whole campaign: which offers, which copy, which l
- ad_library_search_ads(query: string, country?: string, limit?: integer, cursor?: string) — Find ads a competitor (or any company) is currently running on Instagram and Facebook for a keyword, using Meta's public ad library. Returns each ad's advertiser, copy, headline, call to action, landi
- ad_library_search_advertisers(query: string, limit?: integer) — Look up advertisers by company name and get their page id, category, follower/like counts and Instagram handle when available. Use it to turn a company name into the `page_id` that ad_library_company_

## Example prompts
- "Who is advertising about "meal delivery" on Instagram in the US?"
- "List the ads Duolingo is running right now"
- "Compare the ad copy of competitors advertising "project management software""

## Links
Docs: https://mcp.ai/docs/mcps/ad_library
Website: https://mcp.ai/mcps/ad_library