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calebn

Podcast MCP

by calebn
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Python
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set_session_region_tool

Highlight a timeline region in the DAW and optionally start browser playback for podcast editing.

Instructions

Highlight a timeline region in the DAW; optionally start browser playback.

Input Schema

NameRequiredDescriptionDefault
queryNo
end_secYes
playingNo
selectionNo
start_secYes
project_pathNo

Output Schema

NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed6 schema fields changedv0.1.1
    • addedInput schema / properties / project_path / anyOf
      Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
    • addedInput schema / properties / project_path / default
      Added value: +null
    • removedInput schema / properties / project_path / type
      Removed value: -"string"
    • addedInput schema / properties / selection
      Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "title": "Selection"
+}
    • removedInput schema / properties / selection_json
      Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "null"
-    }
-  ],
-  "default": null,
-  "title": "Selection Json"
-}
    • changedInput schema / required
      Previous value: -[
-  "project_path",
-  "start_sec",
-  "end_sec"
-]New value: +[
+  "start_sec",
+  "end_sec"
+]
  2. First observedv0.1.0

TDQS

C2.7/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full behavioral burden. It discloses one side effect (optionally starting browser playback) but says nothing about whether the region persists in session state, whether it requires a loaded project, or how 'highlight' differs from an actual selection change.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single front-loaded sentence with no filler; every clause is doing work. It is concise, though its brevity contributes to the gaps scored under other dimensions.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists, so return values need not be described, but the description is inadequate for a six-parameter session mutation tool: three parameters (query, selection, project_path) get no coverage and no behavioral context is given beyond the playback flag.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0% across six parameters, so the description must compensate and largely does not. It implies the region bounds and maps loosely to 'playing', but leaves query, selection, and project_path entirely unexplained.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb ('Highlight') and resource ('a timeline region in the DAW'), which is enough to distinguish it from generic session tools. However it does not differentiate it from the closely related sibling set_session_selection_tool, and 'highlight' undersells that this actually sets region boundaries (start_sec/end_sec).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no guidance on when to use this versus set_session_selection_tool, seek_session_tool, or set_session_playing_tool, despite those siblings covering adjacent concerns. The only conditional hint is the word 'optionally' for playback.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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