alexveley
55 lines
2.1 KiB
Markdown
55 lines
2.1 KiB
Markdown
# Firefox Agent Bridge
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A small Firefox add-on that exposes an **allowlisted** WebExtension API to local scripts and agents — after you issue them a secret from inside Firefox.
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This is **not** a bookmark sync engine. Firefox already has `browser.bookmarks`. The add-on is a bridge: while Firefox is open, a script on the same machine can call those functions over `http://127.0.0.1:17634` with a Bearer token.
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Agents: start at [AGENTS.md](AGENTS.md).
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## Why this exists
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Firefox will not let an outside process talk to Places. Editing `places.sqlite` while the browser is running loses deletes. The supported path is `browser.bookmarks` inside an extension, plus [native messaging](https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Native_messaging) so a localhost HTTP host can reach that extension.
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## Setup
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1. Register the native host (once):
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```powershell
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powershell -NoProfile -File tools\install-native-host.ps1
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```
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2. Load the add-on (`about:debugging` temporary, or a signed `.xpi` — [docs/signing.md](docs/signing.md)).
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3. Click the toolbar icon → **Manage clients** → name a client → **Generate secret**. Copy the `fab_…` token into whatever secret store you already use.
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4. Leave Firefox open. `GET http://127.0.0.1:17634/health` should return JSON.
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## Call it
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```powershell
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$env:FAB_TOKEN = "fab_…" # the value from the Manage clients modal
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python tools/client.py meta.methods
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python tools/client.py bookmarks.search '[{"title":"10.132.x.x"}]'
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```
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`curl` works the same: `Authorization: Bearer fab_…`.
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## Security
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- Binds **127.0.0.1** only. Browser `Origin` headers are rejected.
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- Each caller is an issued token. The add-on stores a hash, not the secret.
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- Only `bookmarks.*` (plus `meta.*`) in `extension/background.js`. No history, cookies, tabs, or `onMessageExternal`.
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## Pieces
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| Piece | Role |
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|-------|------|
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| `extension/` | Add-on, popup, Manage clients page |
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| `host/` | Native host: stdio to Firefox, HTTP to scripts |
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| `tools/client.py` | Bearer caller (`FAB_TOKEN`) |
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| `examples/replace_named_folder.py` | Sample folder replace |
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## License
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MIT.
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