Terms of service

Last updated 8 October 2026

The short version

  • You buy credit and spend it on ads, at the price on the pricing page when the job starts.
  • We fetch from Meta's public Ad Library when you ask. We don't promise it will always be reachable, and we publish no uptime number.
  • What you do with the data is your responsibility, within the acceptable use policy.
  • Belgian law applies.

This summary isn't the contract. The full terms below are.

1. Who we are

AdSentinel is run by Full Stack Marketing SRL, Rue Beeckman 21, 1180 Brussels, Belgium, company number BCE 0780.799.718 ("we", "us"). Full details are in the legal notice. These terms apply to anyone who creates an account or uses AdSentinel's website, API, command-line tool, MCP server or plugin ("you").

2. The service

AdSentinel fetches ads from Meta's public Ad Library when you ask for them and returns them in a structured form. Each answer is fetched at the moment of the request; we don't keep a stored copy of the Ad Library. AdSentinel is not affiliated with, endorsed by or sponsored by Meta Platforms, Inc., and it is not Meta's API.

3. Your account and keys

You need an account to use AdSentinel. You can create several named API keys. Keep them secret: you are responsible for everything done with your keys, including by agents or scripts you give them to. If a key leaks, revoke it from your account page.

4. Credit and payment

Prices are in euros and exclude VAT, which is added at checkout where it applies. We are the seller; payments are processed by Stripe.

Credit is money on your account, in euros, and sits in up to three places, spent in this order:

  1. Pro credit: the €20 of your Pro subscription each month. It ends with the month.
  2. Free credit: €2 given once when you sign up. It never expires and can't be refunded.
  3. Balance: your top-ups, from €10. It never expires.

When a job starts, we reserve credit for the most it can cost (its ceiling) and tell you that amount before anything is fetched. When it finishes, you are charged for the ads delivered and the rest is released.

5. What we charge for

You pay for ads delivered, at the price per ad shown on the pricing page when the job starts. A job that is cancelled or blocked partway delivers and charges for the ads it reached. Resuming it never charges again for ads you already received. A job that delivers no ads costs nothing. Looking up an advertiser, reading a result again and downloading it are free.

6. Pro

Pro costs €20 a month and adds €20 of credit each month, plus the New ads only and Refresh features. It renews monthly until you cancel. You can cancel any time; Pro stays active until the end of the month you paid for, and the month already started isn't refunded. If we pause a feature for more than 72 hours, the end date of that month's Pro credit moves back by the length of the pause.

7. Refunds and your right to withdraw

Unspent top-ups can be refunded within 30 days of purchase. The refund policy has the details, including the right of EU consumers to withdraw.

8. Availability

AdSentinel depends on Meta's Ad Library, which Meta can change or restrict at any time. We make no promise of availability and publish no uptime figure. When a change would make our results wrong, we pause the affected feature, refuse new jobs with a clear message, and charge nothing for them. If Meta puts the Ad Library behind a login, we may stop the service. Apart from the Pro extension in section 6, we don't offer service credits.

9. Your use of the data

You may use the data you receive for your own purposes, within the acceptable use policy. Ads can contain personal data, such as the names of people who run a page or pay for an ad. When you use that data, you are responsible for having a lawful basis to do so.

10. Liability

We provide AdSentinel with reasonable care but without guarantees about the completeness or accuracy of what Meta publishes. To the extent the law allows, our total liability to you is limited to what you paid us in the 12 months before the event, and we are not liable for indirect losses such as lost profit. Nothing in these terms limits liability that can't be limited by law, or your rights as a consumer.

11. Ending the agreement

You can close your account at any time from your account page; unspent top-ups within their 30 days are refunded. We may suspend or close an account that breaks these terms or the acceptable use policy, and we will tell you why.

12. Changes

We may change these terms. For a change that matters, we email you at least 30 days before it takes effect. Using AdSentinel after that date means you accept the new terms.

13. Law and disputes

Belgian law applies. Disputes go to the courts of Brussels, unless you are a consumer, in which case you keep the protection of the law and courts where you live.

Questions: hello@adsentinel.eu

Set up your agent

Any agent: paste this

Set up AdSentinel so you can get Meta Ad Library ads for me.

1. Read https://adsentinel.eu/docs/quickstart.md
2. Run `npx adsentinel login` and show me the link it prints.
   I'll approve it in my browser.
3. Add the MCP server `npx -y adsentinel mcp` to your config,
   or use the `adsentinel` CLI if you have a shell.
4. Test it for free: look up the advertiser "Zalando" in Spain
   and show me the candidates. Don't fetch any ads yet.

Claude Code: install the plugin

/plugin marketplace add adsentinel-eu/adsentinel
/plugin install adsentinel@adsentinel

Paste the prompt into an agent that runs in a terminal, such as Claude Code, Codex, Hermes or Gemini CLI, not into a chat window: the agent has to run `npx adsentinel login`. Either way, you approve the sign-in once in your browser. It's the one step an agent can't do for you. New accounts get €2 of free credit.