diff --git a/src/codegen/extensions/service_docs.py b/src/codegen/extensions/service_docs.py
new file mode 100644
index 000000000..e271b15ca
--- /dev/null
+++ b/src/codegen/extensions/service_docs.py
@@ -0,0 +1,79 @@
+"""Codegen Service Documentation Tool
+
+This module provides information about how the Codegen service works,
+including how to add repositories, connect to Linear, pricing, and more.
+"""
+
+from typing import Any, Optional
+
+
+def codegen_service_docs(query: Optional[str] = None) -> dict[str, Any]:
+    """Returns information about how the Codegen service works.
+
+    Args:
+        query: Optional query to filter the information returned.
+
+    Returns:
+        A dictionary containing information about the Codegen service.
+    """
+    # This is a placeholder. The actual content will be filled in by the user.
+    service_docs = {
+        "description": "Codegen is an AI-powered software engineering assistant that helps developers with code analysis, refactoring, and development tasks.",
+        "repositories": {
+            "adding_repos": "To add an extra repository to Codegen, please contact the Codegen team with the repository details.",
+            "supported_platforms": ["GitHub", "GitLab", "Bitbucket"],
+        },
+        "integrations": {
+            "linear": {
+                "setup": "To connect Codegen to Linear, you need to configure the Linear API token in your Codegen settings.",
+                "capabilities": ["View issues", "Create issues", "Comment on issues", "Update issue status"],
+            },
+            "slack": {
+                "setup": "Codegen integrates with Slack through the Slack App Directory. Install the Codegen app to your workspace.",
+                "capabilities": ["Respond to messages", "Create threads", "Share code snippets"],
+            },
+            "github": {
+                "setup": "Codegen connects to GitHub repositories through GitHub Apps. Install the Codegen GitHub App to your organization.",
+                "capabilities": ["View code", "Create PRs", "Review PRs", "Comment on issues"],
+            },
+        },
+        "pricing": {
+            "plans": [
+                {"name": "Free", "description": "Limited access to Codegen features"},
+                {"name": "Pro", "description": "Full access to Codegen features for individual developers"},
+                {"name": "Team", "description": "Codegen for teams with collaboration features"},
+                {"name": "Enterprise", "description": "Custom Codegen deployment with advanced security and support"},
+            ],
+            "contact": "For pricing details, please contact sales@codegen.sh",
+        },
+        "support": {
+            "documentation": "https://docs.codegen.sh",
+            "contact": "support@codegen.sh",
+        },
+    }
+
+    # If a query is provided, try to find the relevant information
+    if query:
+        query = query.lower()
+
+        # Handle common queries
+        if "repo" in query or "repository" in query or "add" in query:
+            return {"repositories": service_docs["repositories"]}
+
+        if "linear" in query or "connect" in query:
+            return {"linear": service_docs["integrations"]["linear"]}
+
+        if "cost" in query or "price" in query or "pricing" in query:
+            return {"pricing": service_docs["pricing"]}
+
+        if "slack" in query:
+            return {"slack": service_docs["integrations"]["slack"]}
+
+        if "github" in query:
+            return {"github": service_docs["integrations"]["github"]}
+
+        if "support" in query or "help" in query:
+            return {"support": service_docs["support"]}
+
+    # Return all information if no query or no match
+    return service_docs