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Monitor Facebook Marketplace for changes

Watch any Facebook Marketplace page for the things that matter, and act the instant it changes. Monitors check as fast as every 10s on Scale; see the per-plan floors below.

Build a Facebook Marketplace monitor How Watch-and-Act works
Writ runs on your own accounts, with your own credentials and data, on sites you are authorized to use.
●Succeedinglast checked 8s ago

Watching on Facebook Marketplace

  • ◍new listing for a query
  • ◍price drop
  • ◍new listing in an area
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create

Build a Facebook Marketplace monitor in minutes

Point the recorder at a Facebook Marketplace page, mark new listing for a query or any selector, and Writ builds a Monitor that checks on a schedule and fires a workflow on a change, running on your own account, on a page you are authorized to use.

  1. 1
    Open the Facebook Marketplace page in the recorder

    Point the recorder at the Facebook Marketplace page you care about and mark what to watch: new listing for a query, a CSS selector, or a visual baseline. Writ renders Facebook Marketplace in real Chromium, so it sees values that load with JavaScript.

  2. 2
    Set the schedule and threshold

    Choose how often Writ checks (as fast as every 10s, 10s on Enterprise) and what counts as a change worth acting on.

  3. 3
    Connect a workflow to the change

    On a real change, an automation trigger runs a workflow: notify a channel, log the new value, or take an action on your own authenticated Facebook Marketplace account.

Build a Facebook Marketplace monitor See how it works

See how Watch-and-Act works, build on workflows, or search for another site. Free to start. See pricing.

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Track the Facebook Marketplace changes that matter

These are the signals teams most often watch on Facebook Marketplace. Each can trigger a workflow when it changes.

◍ new listing for a query◍ price drop◍ new listing in an area
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types

Three ways Writ monitors Facebook Marketplace

Content, availability, and dynamic values, all rendered in a real browser.

◈Content changeTrack a selector, the full page, or a visual baseline and get notified the moment Facebook Marketplace changes what you're watching.
◈Uptime & SSLCheck that a Facebook Marketplace page or your own Facebook Marketplace integration is reachable, with response-time and certificate-expiry alerts.
◈JS-rendered valuesWrit renders Facebook Marketplace in real Chromium, so it sees prices, stock, and status that load dynamically, not just the raw HTML.
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frequency

How fast Writ checks Facebook Marketplace, by plan

A faster cadence is a paid capability: a lightweight HTTP check costs far less than a full JS render, so the tightest intervals live on higher plans.

Plan Static page Dynamic (JS-rendered)
Free 5 min 15 min
Starter 60s 10 min
Growth 30s 5 min
Scale 10s 2 min

Enterprise checks down to 10s. Local and BYO runs carry no compute charge; cloud checks are metered from your plan’s included usage, and past it from your wallet.

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From a Facebook Marketplace change to an action in seconds

A Monitor detects the change; an automation trigger runs your workflow.

  1. 1
    Watch Facebook Marketplace

    Pick the Facebook Marketplace page and the change you care about: new listing for a query, a selector, or a visual baseline.

  2. 2
    Detect the change

    Monitors check as fast as every 10s (10s on Enterprise). On a real change, an automation trigger fires.

  3. 3
    Act in seconds

    The trigger runs a workflow: notify a channel, extract the new value, or take an action on your own Facebook Marketplace account.

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Notify any channel. Route a Facebook Marketplace change to any of six providers (Email, SMS, WhatsApp, Signal, Pushover, or a custom webhook), or run a full workflow that takes an action on your own account.

Built on the same engine as the recorder and workflows.

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other ways

Other ways to work with Facebook Marketplace

Turn Facebook Marketplace into an APICall Facebook Marketplace as a REST endpoint.REST Facebook Marketplace MCP toolsExpose Facebook Marketplace as MCP tools for your agent.For AI agents Automate Facebook MarketplaceBuild Facebook Marketplace actions without an API.Automation
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Monitoring Facebook Marketplace questions

How fast can Writ check Facebook Marketplace?
It depends on your plan. Static-page checks run every 5 min on Free, 60s on Starter, 30s on Growth, and 10s on Scale; JS-rendered pages are slower (15 min down to 2 min), and Enterprise checks down to 10s. A detected change fires the connected workflow in seconds, so you act on Facebook Marketplace changes almost as they happen.
Is there a ready-made Facebook Marketplace monitor I can install?
Point the recorder at the Facebook Marketplace page, mark what to watch (new listing for a query, a selector, or a visual baseline), and Writ builds a Monitor that checks on a schedule and fires a workflow on a change. It takes minutes.
What can I monitor on Facebook Marketplace?
Common targets include new listing for a query, price drop, new listing in an area. You can watch a specific element, the whole page, or a visual baseline, and Writ renders Facebook Marketplace in a real browser so it catches values that load with JavaScript.
What happens when Facebook Marketplace changes?
A change becomes an automation trigger that runs a workflow you choose: send a notification through one of six providers, extract the new data, push it to a destination, or take an action on your own authenticated Facebook Marketplace account.
Is it allowed to monitor Facebook Marketplace?
Use Writ on your own Facebook account and on content you are authorized to access. Respect its Terms of Service. These are Monitors and change detection on pages you are authorized to access. Writ runs on your own accounts, with your own credentials and data, on sites you are authorized to use.
rec ▸ ready ●

Watch Facebook Marketplace. Act the instant it changes.

Set up a Monitor, connect a workflow, and let Writ do the watching. Get started free.

Get started