From 7f23d59afcb762710e14b5f91b9796f9813f6ed7 Mon Sep 17 00:00:00 2001
From: Sam & Claude <hello@clawdie.si>
Date: Sat, 27 Jun 2026 13:54:50 +0200
Subject: [PATCH] feat(mcp): add colibri_list_task_costs tool + test assertion
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Dashboard-ready: agents list all tasks with cost data (tokens,
cost_usd, cache ratio) filtered by optional status. Complements
colibri_get_task (single task detail). Tool count: 11→12.
---
 crates/colibri-mcp/src/lib.rs             | 20 ++++++++++++++++++++
 crates/colibri-mcp/tests/tool_dispatch.rs |  4 +++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/crates/colibri-mcp/src/lib.rs b/crates/colibri-mcp/src/lib.rs
index 0225b1c..e9071ca 100644
--- a/crates/colibri-mcp/src/lib.rs
+++ b/crates/colibri-mcp/src/lib.rs
@@ -15,6 +15,8 @@
 //! | `colibri_create_task` | write-gated| Create a task                       |
 //! | `colibri_intake_task` | write-gated| Submit intake task with capabilities|
 //! | `colibri_set_cost_mode` | write-gated | Switch cost mode (fast/smart/max) |
+//! | `colibri_get_task`   | read-only  | Task details with cost data          |
+//! | `colibri_list_task_costs` | read-only | All tasks with cost (dashboard)  |
 //!
 //! Write tools require `COLIBRI_MCP_WRITE=1`.
 
@@ -156,6 +158,16 @@ pub fn tool_list() -> Vec<Value> {
                 "required": ["task_id"]
             })),
         ),
+        json_tool(
+            "colibri_list_task_costs",
+            "List all tasks with cost data (tokens, cost_usd, cache ratio, success). Dashboard-ready summary for web UI.",
+            Some(serde_json::json!({
+                "type": "object",
+                "properties": {
+                    "status": { "type": "string", "description": "Optional status filter: done, failed, or empty for all" }
+                }
+            })),
+        ),
         json_tool(
             "colibri_external_mcp_servers",
             "List configured external MCP servers from COLIBRI_MCP_EXTERNAL_CONFIG",
@@ -304,6 +316,14 @@ pub async fn dispatch_tool(
                 None => Err(McpError::not_found(format!("task not found: {task_id}"))),
             }
         }
+        "colibri_list_task_costs" => {
+            let status = arguments
+                .get("status")
+                .and_then(|v| v.as_str())
+                .map(|s| s.to_string());
+            let all_tasks = client.list_tasks(status.as_deref()).await.map_err(map_client_error)?;
+            Ok(tool_text(all_tasks))
+        }
         "colibri_external_mcp_servers" => {
             let registry = external::load_registry_if_present(&config.external_config_path).await?;
             Ok(tool_text(serde_json::json!({
diff --git a/crates/colibri-mcp/tests/tool_dispatch.rs b/crates/colibri-mcp/tests/tool_dispatch.rs
index f5119a4..c505c43 100644
--- a/crates/colibri-mcp/tests/tool_dispatch.rs
+++ b/crates/colibri-mcp/tests/tool_dispatch.rs
@@ -252,6 +252,8 @@ fn tool_list_has_all_phase1_tools() {
     assert!(names.contains(&"colibri_external_mcp_servers"));
     assert!(names.contains(&"colibri_external_mcp_list_tools"));
     assert!(names.contains(&"colibri_external_mcp_call_tool"));
+    assert!(names.contains(&"colibri_list_task_costs"));
+
     assert!(names.contains(&"colibri_get_task"));
-    assert_eq!(names.len(), 11);
+    assert_eq!(names.len(), 12);
 }