diff --git a/fern/products/docs/pages/ask-fern/what-is-ask-fern.mdx b/fern/products/docs/pages/ask-fern/what-is-ask-fern.mdx
index 12be79ac1..49fb98ced 100644
--- a/fern/products/docs/pages/ask-fern/what-is-ask-fern.mdx
+++ b/fern/products/docs/pages/ask-fern/what-is-ask-fern.mdx
@@ -121,7 +121,7 @@ Ask Fern can [mask structured personally identifiable information](/learn/docs/c
## Privacy and data handling
-Each request sends the conversation, the documentation passages retrieved for the question, the site domain, and any system prompt you configure to the model. Retrieval respects the viewer's [roles](/learn/docs/authentication/features/rbac), so answers draw only from content that viewer can read. Fern stores end-user queries and answers, including questions asked in Slack, to power analytics, and retains them indefinitely unless you set a [query log retention](#features) window. Fern doesn't use your documentation content or your end users' queries to train AI models.
+Each request sends the conversation, the documentation passages retrieved for the question, the site domain, and any system prompt you configure to the model. Retrieval respects the viewer's [roles](/learn/docs/authentication/features/rbac), so answers draw only from content that viewer can read. Fern stores end-user queries and answers, including questions asked in Slack, to power analytics, and retains them indefinitely unless you set a [query log retention](#features) window. Fern doesn't use your documentation content or your end users' queries to train AI models. Every answer carries an AI disclaimer, and you can [replace the default wording](/learn/docs/configuration/site-level-settings#ask-fern-configuration) with `ai-search.disclaimer`.
## Disable Ask Fern
diff --git a/fern/products/docs/pages/changelog/2026-09-11.mdx b/fern/products/docs/pages/changelog/2026-09-11.mdx
new file mode 100644
index 000000000..6f4d8a864
--- /dev/null
+++ b/fern/products/docs/pages/changelog/2026-09-11.mdx
@@ -0,0 +1,12 @@
+## Custom Ask Fern disclaimer
+
+ai, docs.yml
+
+You can now replace the default Ask Fern disclaimer ("Responses are generated using AI and may contain mistakes.") with your own wording. Set `ai-search.disclaimer` in `docs.yml` and the text appears beneath answers in the chat panel, standalone modal, mobile drawer, and search widget, so the disclaimer can match your legal or privacy requirements.
+
+```yaml docs.yml
+ai-search:
+ disclaimer: Answers are generated by a third-party AI model and may be inaccurate.
+```
+
+
diff --git a/fern/products/docs/pages/navigation/site-level-settings.mdx b/fern/products/docs/pages/navigation/site-level-settings.mdx
index b9bb4c57c..b2cb6c60f 100644
--- a/fern/products/docs/pages/navigation/site-level-settings.mdx
+++ b/fern/products/docs/pages/navigation/site-level-settings.mdx
@@ -1220,6 +1220,7 @@ Specify [Ask Fern](/learn/docs/ai-features/ask-fern/overview) to control where i
```yaml docs.yml
ai-search:
mask-pii: true
+ disclaimer: Answers are generated by a third-party AI model and may be inaccurate. Verify against the reference docs.
datasources:
- url: https://example.com/additional-docs
title: Additional documentation
@@ -1254,6 +1255,10 @@ ai-search:
See Anthropic's [prompting guide](https://docs.anthropic.com/en/docs/build-with-claude/prompt-engineering/overview) for ideas and examples.
+
+ Custom text for the disclaimer shown beneath Ask Fern answers in the chat panel, standalone modal, mobile drawer, and search widget. Replaces the default text, "Responses are generated using AI and may contain mistakes." Use it to match your legal or privacy requirements, for example to name the AI provider. A blank value shows the default text.
+
+
## Agents configuration
Configure directives and custom files for [AI agent consumption](/learn/docs/ai-features/llms-txt). By default, Fern auto-generates `llms.txt` and prepends a directive to every page served to AI agents. Use the `agents` key to customize this behavior: