MCP servers for ad research: let your AI assistant find winning Meta ads
Published 13 Nov 2026. Data read Poseidon server card and docs read 2026-11-13; competitors' public pages read 2026-11-12; example answers from API 1.2.0 on 2026-11-12. Source: Meta's Ad Library (EU transparency data), read by Poseidon, unless the text names another source.
An MCP server lets your AI assistant (Claude, Cursor, VS Code, an OpenAI agent) search ad data by itself when you ask a question in plain words. For Meta ads, Poseidon is a remote MCP server listed in the official MCP registry: one address and one key, and your assistant can find winning e-commerce ads with Meta's own EU reach, their scripts and the brands' own A/B tests.
Set it up
Get a free key with 100 credits at askposeidon.app/early-access. Then give your assistant Poseidon's address and your key: one line for Claude Code, Cursor, VS Code, Claude Desktop or an OpenAI agent, copied from the setup page. Nothing to install.
The 7 tools your assistant gets
| Tool | What it does | Cost |
|---|---|---|
| Filters | What it can filter on, with live counts: niches, formats, countries, ages | Free |
| Search winners | Winning e-commerce ads (live 21+ days) with EU reach, country and age × gender split | €0.05 |
| A/B tests | The brands' own A/B tests and which version won | €0.05 |
| One ad | One ad in full: Ad Library link, copy, reach history, script in sections | €0.02 |
| One brand | A brand: its shop, its ads, its winners | €0.05 |
| Weights | Weights per format, with the sample size | €0.10 |
| Your account | Credits left, prices, last calls | Free |
A search that finds nothing costs nothing. Credits never expire.
What you can ask, with real answers
Asked through Poseidon on 12 November 2026:
| Question | What came back |
|---|---|
| "Spoken script of the longest-running weight-loss video in France" | epycure.com, EU reach 2,766,753, 100% of Meta's breakdown in France, script in sections |
| "Ads launched in Italy in the last 60 days with 500,000+ EU reach" | 35 ads; the biggest from Kijimea, 3,466,782 |
| "Ads in Germany where women 45–54 are 30%+ of the breakdown" | Essential.beauty first, 2,555,982, women 45–54 33% |
| "Brands' own A/B tests in weight loss, France" | Epycure, the same text on three videos, 527,300 against 127,920 |
Other ad tools with an MCP
From each tool's own pages, read 12 November 2026: TrendTrack (Pro and Business, daily limits), BrandSearch (5,000 or 10,000 calls a month), Foreplay (10,000 credits a month included), Atria (600 MCP calls a month on Core) and AdTruffle (from $66 a month) list an MCP. None of them lists Meta's age × gender reach per ad or the brands' own A/B tests on its pages. See ad spy tool APIs compared.
FAQ
What is an MCP server?
The Model Context Protocol is an open standard that lets an AI assistant call outside tools. A remote MCP server is one you connect by its address, with nothing to install.
Does it work with ChatGPT?
With OpenAI's Responses API, yes (setup in the docs). ChatGPT's own connectors are coming.
Can my assistant make up numbers?
Poseidon returns only measured data, each figure with the day it was read, and nothing below 30 ads for averages. What your assistant writes around it is up to the assistant, so ask it to quote the ad links.
Connect Poseidon to your assistant. askposeidon.app/docs/mcp