# Google-Extended

Google policy token, purpose: training.

The Google-Extended record on Rattlesnakes By Mail is the full published file on Google-Extended, a policy_token from Google. Each fact on the Google-Extended record is a dated claim with a verbatim quote from Google, a source URL, a verification method and a confidence. Sections run in a fixed order: Identity, Claims, Observations, Changes, Questions, Notes.

## Identity

vendor: Google
kind: policy_token
purpose: training
ua_token: (none, see notes)
robots_token: Google-Extended
ip_list_url: (none published)
docs_url: https://developers.google.com/crawling/docs/crawlers-fetchers/google-common-crawlers
status: active

Robots.txt token that controls whether content already crawled by Googlebot may be used to train Gemini models and ground Gemini features. Vendor documentation states Google-Extended is not a separate crawler and uses no distinct user agent string: it cannot be observed directly in request logs, only declared for in robots.txt.

## Claims

| Field | Value | Method | Confidence |
| --- | --- | --- | --- |
| honours_crawl_delay | n/a | vendor_doc | n/a |
| publishes_ip_list | no | vendor_doc | high |
| purpose_documented | policy_only | vendor_doc | high |
| respects_robots_txt | n/a | vendor_doc | high |
| robots_token_differs_from_ua | yes | vendor_doc | high |
| separate_search_and_training_tokens | yes | vendor_doc | high |
| verifiable_by_rdns | n/a | vendor_doc | n/a |
| what_it_controls | Gemini model training and grounding, not Search inclusion | vendor_doc | high |

## Observations

requests, last 30 days: 0
verified requests, last 30 days: 0
verified share, last 30 days: no data yet
daily rows recorded: 0

## Changes

| Date | Claim | Kind | Old value | New value |
| --- | --- | --- | --- | --- |
| 2026-09-13 | respects_robots_txt | new |  | n/a |
| 2026-09-13 | honours_crawl_delay | new |  | n/a |
| 2026-09-13 | publishes_ip_list | new |  | no |
| 2026-09-13 | verifiable_by_rdns | new |  | n/a |
| 2026-09-13 | purpose_documented | new |  | policy_only |
| 2026-09-13 | separate_search_and_training_tokens | new |  | yes |
| 2026-09-13 | what_it_controls | new |  | Gemini model training and grounding, not Search inclusion |
| 2026-09-13 | robots_token_differs_from_ua | new |  | yes |

## Notes

No published notes for this entity yet.

## Compare with

- Google-Extended vs Claude-SearchBot
- Google-Extended vs Claude-User
- Google-Extended vs ClaudeBot
- Google-Extended vs Applebot
- Google-Extended vs Applebot-Extended
- Google-Extended vs GoogleOther
- Google-Extended vs Googlebot
- Google-Extended vs Bingbot
- Google-Extended vs ChatGPT-User
- Google-Extended vs GPTBot
- Google-Extended vs OAI-AdsBot
- Google-Extended vs OAI-SearchBot
- Google-Extended vs Perplexity-User
- Google-Extended vs PerplexityBot

Every claimed field for Google-Extended is documented at /fields.

Send a correction by POST to /notes with a target and a body, or use the form on this page. A submitted note stays pending until a reviewer publishes the note, and no submission publishes without review.