diff --git a/crates/agent/src/prompts/stale_files_prompt_header.txt b/crates/agent/src/prompts/stale_files_prompt_header.txt
new file mode 100644
index 0000000000..6686aba1e2
--- /dev/null
+++ b/crates/agent/src/prompts/stale_files_prompt_header.txt
@@ -0,0 +1 @@
+These files changed since last read:
diff --git a/crates/agent/src/prompts/summarize_thread_detailed_prompt.txt b/crates/agent/src/prompts/summarize_thread_detailed_prompt.txt
new file mode 100644
index 0000000000..30fab472af
--- /dev/null
+++ b/crates/agent/src/prompts/summarize_thread_detailed_prompt.txt
@@ -0,0 +1,6 @@
+Generate a detailed summary of this conversation. Include:
+1. A brief overview of what was discussed
+2. Key facts or information discovered
+3. Outcomes or conclusions reached
+4. Any action items or next steps if any
+Format it in Markdown with headings and bullet points.
diff --git a/crates/agent/src/prompts/summarize_thread_prompt.txt b/crates/agent/src/prompts/summarize_thread_prompt.txt
new file mode 100644
index 0000000000..f57644433b
--- /dev/null
+++ b/crates/agent/src/prompts/summarize_thread_prompt.txt
@@ -0,0 +1,4 @@
+Generate a concise 3-7 word title for this conversation, omitting punctuation.
+Go straight to the title, without any preamble and prefix like `Here's a concise suggestion:...` or `Title:`.
+If the conversation is about a specific subject, include it in the title.
+Be descriptive. DO NOT speak in the first person.
diff --git a/crates/agent/src/thread.rs b/crates/agent/src/thread.rs
index c00bc60bb4..0b0308340c 100644
--- a/crates/agent/src/thread.rs
+++ b/crates/agent/src/thread.rs
@@ -1428,7 +1428,7 @@ impl Thread {
         messages: &mut Vec<LanguageModelRequestMessage>,
         cx: &App,
     ) {
-        const STALE_FILES_HEADER: &str = "These files changed since last read:";
+        const STALE_FILES_HEADER: &str = include_str!("./prompts/stale_files_prompt_header.txt");
 
         let mut stale_message = String::new();
 
@@ -1440,7 +1440,7 @@ impl Thread {
             };
 
             if stale_message.is_empty() {
-                write!(&mut stale_message, "{}\n", STALE_FILES_HEADER).ok();
+                write!(&mut stale_message, "{}\n", STALE_FILES_HEADER.trim()).ok();
             }
 
             writeln!(&mut stale_message, "- {}", file.path().display()).ok();
@@ -1854,10 +1854,7 @@ impl Thread {
             return;
         }
 
-        let added_user_message = "Generate a concise 3-7 word title for this conversation, omitting punctuation. \
-            Go straight to the title, without any preamble and prefix like `Here's a concise suggestion:...` or `Title:`. \
-            If the conversation is about a specific subject, include it in the title. \
-            Be descriptive. DO NOT speak in the first person.";
+        let added_user_message = include_str!("./prompts/summarize_thread_prompt.txt");
 
         let request = self.to_summarize_request(
             &model.model,
@@ -1958,12 +1955,7 @@ impl Thread {
             return;
         }
 
-        let added_user_message = "Generate a detailed summary of this conversation. Include:\n\
-             1. A brief overview of what was discussed\n\
-             2. Key facts or information discovered\n\
-             3. Outcomes or conclusions reached\n\
-             4. Any action items or next steps if any\n\
-             Format it in Markdown with headings and bullet points.";
+        let added_user_message = include_str!("./prompts/summarize_thread_detailed_prompt.txt");
 
         let request = self.to_summarize_request(
             &model,
diff --git a/script/danger/dangerfile.ts b/script/danger/dangerfile.ts
index 227e574823..56441bea20 100644
--- a/script/danger/dangerfile.ts
+++ b/script/danger/dangerfile.ts
@@ -1,4 +1,4 @@
-import { danger, message, warn } from "danger";
+import { danger, message, warn, fail } from "danger";
 const { prHygiene } = require("danger-plugin-pr-hygiene");
 
 prHygiene({
@@ -57,3 +57,39 @@ if (includesIssueUrl) {
     ].join("\n"),
   );
 }
+
+const PROMPT_PATHS = [
+  "assets/prompts/content_prompt.hbs",
+  "assets/prompts/terminal_assistant_prompt.hbs",
+  "crates/agent/src/prompts/stale_files_prompt_header.txt",
+  "crates/agent/src/prompts/summarize_thread_detailed_prompt.txt",
+  "crates/agent/src/prompts/summarize_thread_prompt.txt",
+  "crates/assistant_tools/src/templates/create_file_prompt.hbs",
+  "crates/assistant_tools/src/templates/edit_file_prompt.hbs",
+  "crates/git_ui/src/commit_message_prompt.txt",
+];
+
+const PROMPT_CHANGE_ATTESTATION = "I have ensured the LLM Worker works with these prompt changes.";
+
+const modifiedPrompts = danger.git.modified_files.filter((file) =>
+  PROMPT_PATHS.some((promptPath) => file.includes(promptPath)),
+);
+
+for (const promptPath of modifiedPrompts) {
+  if (body.includes(PROMPT_CHANGE_ATTESTATION)) {
+    message(
+      [
+        `This PR contains changes to "${promptPath}".`,
+        "The author has attested the LLM Worker works with the changes to this prompt.",
+      ].join("\n"),
+    );
+  } else {
+    fail(
+      [
+        `Modifying the "${promptPath}" prompt may require corresponding changes in the LLM Worker.`,
+        "If you are ensure what this entails, talk to @maxdeviant or another AI team member.",
+        `Once you have made the changes—or determined that none are necessary—add "${PROMPT_CHANGE_ATTESTATION}" to the PR description.`,
+      ].join("\n"),
+    );
+  }
+}