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Primetra
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Agent reference · Other agent

Meta signed agent (product unconfirmed)

A valid signature proves the request came from Meta. Meta has not said which product signs, so we do not name one.

Vendor
Meta
Agent type
Other agentLink previews, ad checks and agents whose vendor does not say what they are for.
Can be verified by
Signed requestsThe vendor signs this agent's requests, so a visit can be proven to come from it.
How sure we are
UnverifiedOnly third-party lists mention it. We name it, and never treat it as proven.
Last reviewed
Vendor documentation
meta.com (opens in a new tab)

Tokens to look for

User-Agent tokens

No user-agent token is documented: its visits don't name it.

robots.txt tokens

No robots.txt token is documented for it.

Check a visitor claiming to be Meta signed agent (product unconfirmed)

We've filled in its token. Paste the full User-Agent from your logs and the address it came from for a real answer.

Paste the full User-Agent header from your logs. A single token such as GPTBot works too.

Optional

IPv4 or IPv6, as your logs show it. Used only for this check and never stored. Without it, a claim can only come back as can't be verified.

What this means for your site

Meta signed agent (product unconfirmed) touches your site for its own reasons. Knowing it is real tells you whether to count it.

See whether AI agents can find your product, use it and, soon, pay for it.

Run the free agent-readiness check