Best Facebook Data APIs for AI Agents in 2026

"Facebook API" isn't one thing to evaluate. Ad spend, page identity, and marketplace listings live on three different surfaces with three different input shapes, three different price points, and three different maintenance problems if you try to pull them yourself. Picking one vendor for "Facebook data" without checking which surface it actually covers is how a team ends up with an ads tool when what they needed was a marketplace price feed.

If you're an agent (or building one) reading this rather than a human, the full machine-readable schema for every endpoint below lives at mindcase.co/skills.md.

What should you actually check before picking a Facebook API?

Four things, in order of how often they get skipped:

• Which surface it covers. Ads, pages, and marketplace are separate products on Facebook's own backend. A vendor that's strong on ad transparency data may have never built a marketplace scraper at all.
• Whether it batches. Some inputs take one URL per call; others take a whole list in one request. That difference changes how you'd architect a daily pull across dozens of pages.
• Whether it needs a login. Facebook gates a lot behind an authenticated session. An API that needs one inherits every session problem a DIY scraper has — expiring cookies, account flags, CAPTCHAs.
• What it actually returns. "Ad data" can mean a headline and a CTA, or it can mean full EU transparency disclosures and reach breakdowns. Check the field list, not the marketing copy.

How do you check whether an API needs a login?

Try pulling one row without ever authenticating. If the vendor's own docs require you to connect a Facebook account before the first call works, that's a session dependency you're inheriting, not one you're avoiding.

curl -X POST "https://api.mindcase.co/v1/data/facebook/pages/run?wait=true" \
-H "Authorization: Bearer $MINDCASE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
  "params": {
    "pageUrls": ["nike", "adidas", "puma"]
  }
}'

# $0.01 per page

No login step, no account to connect — just a page handle in, a row back. That's true across all three Facebook APIs covered here: Ads, Pages, and Marketplace all run against public data only.

Why does batching matter more than it sounds?

Say you're benchmarking three competitor brands across all three surfaces — ads, page identity, and marketplace listings — once a week. The Pages endpoint takes an array, so three brands is one call. Ads and Marketplace each take a single URL per call, so the same three-brand sweep is three separate ad-library calls and, if each brand runs its own marketplace storefront, three more. The batching difference doesn't change what data you get — it changes whether your weekly job is 1 request or 7.

What does each endpoint actually return?

Facebook Ads returns 21 fields per ad — headline, body text, CTA, destination URL, format, start/end dates, days active, and EU reach data where Meta discloses it. It's built for one page's ad library at a time: urls takes a single page handle or URL, with activeStatus to filter for currently-running vs. retired ads.

Facebook Pages returns 31 fields — followers, category, contact details, business hours, review count, whether the page is currently running ads, and links out to the brand's other social profiles. pageUrls takes an array, so this is the one endpoint here built for a batch pull from the start.

Facebook Marketplace returns 21 fields per listing — price, condition, location, delivery options, photos. It takes one category or search URL per call, so covering multiple cities or categories means one call each.

Which endpoint should you use for which job?

What can't you get from any of these?

Two cases.

Private pages and groups. Every endpoint here reads public data only — a private profile, a closed group, or a page that's blocked from public view returns nothing, by design, not a gap in coverage.

Ad data outside what a page discloses. The Ads endpoint returns what's actually in the public Ad Library for a given page. It doesn't reconstruct spend figures Meta itself doesn't publish for commercial (non-political) ads — that level of detail simply isn't public anywhere.

FAQ