Skip to main content
Glama

vibo_comment_on_song

Destructive

Leave a comment or note for the DJ on a specific song, with a confirmation step before the comment is submitted.

Instructions

Leave a comment / note for the DJ on a specific song. Asks the user to confirm first: a confirmation prompt where the client supports one; otherwise the first call returns a preview and a confirmToken, and only a repeat call with that token proceeds (see MCP_CONFIRM_MODE).

Input Schema

NameRequiredDescriptionDefault
songIdYesSong _id (from vibo_get_section_songs).
eventIdYesEvent id.
messageYesThe comment text.
sectionIdYesSection id.
confirmTokenNoONLY for the two-step confirmation fallback (a client without MCP elicitation). The confirmToken from this same tool's phase-1 "confirmation-required" response, passed back ONLY after the user has seen that preview and explicitly approved it in chat — never on the first call, never invented, never reused. Call again with the same arguments. Ignored when the client supports elicitation.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv2.3.1
    • removedInput schema / properties / confirm
      Removed value: -{
      -  "description": "Must be true to proceed. Without this, the tool returns a preview.",
      -  "type": "boolean"
      -}
    • addedInput schema / properties / confirmToken
      Added value: +{
      +  "description": "ONLY for the two-step confirmation fallback (a client without MCP elicitation). The confirmToken from this same tool's phase-1 \"confirmation-required\" response, passed back ONLY after the user has seen that preview and explicitly approved it in chat — never on the first call, never invented, never reused. Call again with the same arguments. Ignored when the client supports elicitation.",
      +  "type": "string"
      +}
  2. Changed1 schema field changedv2.0.0
    • changedInput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
  3. Addedv1.5.3
  4. Removedv1.4.3
  5. First observedv1.3.1

TDQS

A4.3/5.0
Behavior5/5

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

Annotations only declare the safety profile (destructive, non-idempotent, open-world); the description adds the material behavior an agent cannot infer: a user-confirmation gate, a two-phase preview/confirmToken fallback, and the rule that only a repeat call with a valid token actually proceeds. That is exactly the extra context annotations leave out.

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?

Two sentences that front-load the core action before the confirmation mechanics, with no filler. The second sentence is dense with parentheticals but every clause carries necessary behavior, so it stays within an acceptable size.

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

Completeness4/5

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

For a destructive, non-idempotent mutation with no output schema, the description covers the critical missing piece (the confirmation protocol) that the annotations and schema alone would not convey. It omits only minor detail such as the success response shape, which is a small gap given the tool's complexity.

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

Parameters3/5

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

Schema description coverage is 100%, so all five parameters (including the carefully documented confirmToken) are already explained in the schema, establishing a baseline of 3. The description references the confirmation mechanism but adds no parameter-level syntax or format detail beyond it.

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

Purpose5/5

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

States a specific verb and resource ('Leave a comment / note ... on a specific song'), which cleanly separates it from the sibling vibo_comment_on_section without opening either schema. The target object ('song') is named explicitly, so an agent can route on it.

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

Usage Guidelines4/5

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

Gives clear operational context for invoking the tool (confirm-first behavior, and the fallback path when a client lacks elicitation, mediated by MCP_CONFIRM_MODE). It does not, however, explicitly state when to prefer this over comment_on_section or when-not to use it, so it falls short of full alternative-routing guidance.

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