# FacebookBot

> Meta's older speech- and language-corpus crawler, largely superseded by meta-externalagent but still listed as a valid robots token.

| field | value |
|---|---|
| operator | Meta |
| category | AI training crawlers |
| robots.txt token | `FacebookBot` |
| user-agent contains | `FacebookBot` |
| robots.txt | obeys robots.txt (documented) |
| verify by | no published verification method |
| published IP ranges | none published |
| prefixes mirrored | 0 IPv4 / 0 IPv6 |
| operator docs | https://developers.facebook.com/docs/sharing/webmasters/web-crawlers |
| last reviewed | 2026-09-01 |

## What blocking it costs you

Negligible today. Keep the rule; expect little traffic.

## Full user-agent string

```
FacebookBot/1.0 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)
```

## Block it

```
User-agent: FacebookBot
Disallow: /
```

## Allow it

```
User-agent: FacebookBot
Allow: /
```

JSON: https://www.pathwren.workers.dev/crawler/facebookbot.json · index: https://www.pathwren.workers.dev/llms.txt