# 13 things to build with Facebook data.

> Ideas to build with public Facebook data: ad trackers, page review monitors, event finders and Marketplace price checks, each with the operations used.

Canonical: https://apiforagents.dev/ideas/facebook-data · Updated 2026-10-21

Facebook data is good for watching what pages post and advertise, reading reviews, and finding events and Marketplace listings. Each idea below names the operations it calls, so you can quote it and run it.

- Operations: 10
- Price: from $0.0022 per record
- Free to start: $0.10

## The ideas

- **[A competitor ad tracker](https://apiforagents.dev/platforms/facebook/ad-library-api).** For growth teams and agencies. It reads every active ad a rival page runs, with creative, headline, call to action and dates, and flags new ones. Uses ads.
- **[A local business lead list](https://apiforagents.dev/platforms/facebook/page-api).** For agencies selling to small businesses. From a list of page URLs it reads category, contact, hours and whether the page runs ads. Uses pages.
- **[A page review monitor](https://apiforagents.dev/platforms/facebook/reviews-api).** For multi-location businesses. It reads new reviews and recommendations and sends low ones to the right manager. Uses reviews.
- **[A local events finder](https://apiforagents.dev/platforms/facebook/events-api).** For people looking for things to do. It searches events by keyword and shows date, venue, how many are going and ticket links. Uses events.
- **[An event vendor lead list](https://apiforagents.dev/platforms/facebook/events-api).** For caterers, photographers and venues. It finds events in their field and reads the host pages for public contact details. Uses events and pages.
- **[A Marketplace price check](https://apiforagents.dev/platforms/facebook/marketplace-api).** For buyers. It reads listings from a Marketplace search URL and shows price, condition and location so a fair price is clear. Uses marketplace.
- **[A resale pricing dataset](https://apiforagents.dev/platforms/facebook/marketplace-api).** For resellers and analysts. It reads listings in a category each week and keeps a table of asking prices by condition. Uses marketplace.
- **[A page growth dashboard](https://apiforagents.dev/platforms/facebook/page-api).** For social teams. It reads page cards on a schedule and charts the stored followers, talking-about and recommend series, which are free to read. Uses pages and history.
- **[A content benchmark](https://apiforagents.dev/platforms/facebook/posts-api).** For marketers. It reads a rival page's recent posts with reactions by type, shares and views. Uses posts.
- **[A reels performance tracker](https://apiforagents.dev/platforms/facebook/reels-api).** For video teams. It reads a page's recent reels with plays and duration and ranks them. Uses reels.
- **[A comment triage helper](https://apiforagents.dev/platforms/facebook/comments-api).** For community managers. It reads new comments on the page's posts, with replies, and lists the ones that need an answer. Uses comments.
- **[A public group digest](https://apiforagents.dev/platforms/facebook/posts-api).** For members of busy public groups. It reads the group's recent posts and writes a weekly summary with links. Uses posts.
- **[An ad activity signal for agencies](https://apiforagents.dev/platforms/facebook/page-api).** For ad agencies. It checks which pages on a list run ads and reads the live ones, so outreach can start from what a business already does. Uses pages and ads.

## Each idea and what it calls

| Idea | Operations | One call returns | Main operation price |
|---|---|---|---|
| A competitor ad tracker | ads | Up to 100 ads | ads: $0.0045 per record |
| A local business lead list | pages | Up to 10 pages | pages: $0.009 per record |
| A page review monitor | reviews | Up to 100 reviews | reviews: $0.0022 per record |
| A local events finder | events | Up to 100 events | events: $0.009 per record |
| An event vendor lead list | events, pages | Up to 100 events | events: $0.009 per record |
| A Marketplace price check | marketplace | Up to 100 listings | marketplace: $0.009 per record |
| A resale pricing dataset | marketplace | Up to 100 listings | marketplace: $0.009 per record |
| A page growth dashboard | pages, history | Up to 10 pages | pages: $0.009 per record |
| A content benchmark | posts | Up to 100 posts | posts: $0.0045 per record |
| A reels performance tracker | reels | Up to 100 reels | reels: $0.0045 per record |
| A comment triage helper | comments | Up to 100 comments | comments: $0.0022 per record |
| A public group digest | posts | Up to 100 posts | posts: $0.0045 per record |
| An ad activity signal for agencies | pages, ads | Up to 10 pages | pages: $0.009 per record |

## How to start

1. Sign up. An agent registers itself with one POST and starts with $0.10 of free credit; a person can sign up on the site instead.
2. Quote the first call for free: send the pages request with "estimateOnly": true and read the price before anything is spent.
3. Run the same call with "maxUsd" set as a ceiling, and keep the rows it returns.
4. Schedule it: repeat the call daily or weekly, and read the stored series with history, which is free.

## Operations used

- [Facebook Page API](https://apiforagents.dev/platforms/facebook/page-api): $0.009 per record. Page cards for up to ten pages by URL or handle.
- [Facebook Ad Library API](https://apiforagents.dev/platforms/facebook/ad-library-api): $0.0045 per record. Every ad a page runs in Meta's Ad Library.
- [Facebook Events API](https://apiforagents.dev/platforms/facebook/events-api): $0.009 per record. Events by keyword.
- [Facebook Marketplace API](https://apiforagents.dev/platforms/facebook/marketplace-api): $0.009 per record. Marketplace listings from a category or search URL.
- [Facebook Posts API](https://apiforagents.dev/platforms/facebook/posts-api): $0.0045 per record. Recent posts of a page, profile or group.
- [Facebook Reviews API](https://apiforagents.dev/platforms/facebook/reviews-api): $0.0022 per record. Reviews/recommendations on up to five pages.
- [Facebook Reels API](https://apiforagents.dev/platforms/facebook/reels-api): $0.0045 per record. Recent reels of a page.
- [Facebook Comments API](https://apiforagents.dev/platforms/facebook/comments-api): $0.0022 per record. Comments on up to five posts, reels or photos by permalink.

## Questions

### Can I read private profiles or private groups?

No. Only public pages, public posts and public listings are read.

### Do I need a Facebook account to build these?

No. The API reads public data and never asks for your login, password or cookie.

### What does a run cost?

Facebook records are priced from $0.0022 per record. A call can carry a minimum, so send it first with "estimateOnly": true. The quote is free and is the most the call can cost.

### Can an AI agent build and run these on its own?

Yes. It signs itself up with one call and gets $0.10 free, quotes each call before it spends, and pays from a prepaid balance. "maxUsd" caps every call, and only a person can add money.

## Why API for Agents

- One key for 26 platforms: social, commerce, jobs, places, search and contacts, with one request shape and one response shape.
- A free quote before any spend: add "estimateOnly": true to any call and see the most it can cost.
- Pay per record in US dollars. No subscription, nothing expires, top-ups from $5.
- $0.10 free to try, no card. An AI agent can sign itself up in one request; a person claims it later.
- Measured, not estimated: every answer says when each row was measured, whether it was fresh or a recent capture, and how sure to be of each field.
- Partial success is success: anything that could not be fetched is named with a reason, and the charge settles to what came back, never above the quote.
- Typed fields that keep their names whichever source answered, and a details object last with everything else the source sent, under our own field names.
- Try any endpoint in the playground and download the answer as CSV or JSON.

## Start

The playground runs any endpoint by hand: pick a platform and what you want from it, fill a short form named in plain words (or press Use sample input), see the free quote on the Run button, run it, then read the answer as a table or JSON and download it as CSV or JSON. The same call is written out as cURL, Python and Node while you type. Open it at https://apiforagents.dev/dashboard/run (sign in first).

Agents register at https://apiforagents.dev/auth.md (one POST, $0.10 free). People: https://apiforagents.dev/docs#start. Prices: https://apiforagents.dev/pricing.md