Trainzilla Coach MCP

create_community_post

Publish a text post to a community — visible to every member immediately, so only after the coach approves the wording. (Photos/videos are added in the app.) (confirm-gated: previews until confirm: true)

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "input": "<input>"
    },
    "name": "create_community_post"
  }
}

Input Schema

Name	Required	Description	Default
`input`	Yes
`confirm`	No	Must be true to actually execute. If false/omitted, returns a preview only.

Schema Changelog

Changes observed during successful MCP inspections.

AddedOct 29, 2026

TDQS

A4/5.0

Behavior4/5

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

Adds real behavioral context beyond the bare readOnlyHint=false: posts are immediately visible to every member, and the call is confirm-gated so it previews by default. This is exactly the kind of irreversible-effect warning a create tool needs, though the confirm-gating detail is partly duplicated in the schema's confirm description.

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?

Three short clauses, front-loaded with the action and its consequence. Parenthetical stacking is slightly choppy but nothing is wasted.

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 2-parameter mutation with no output schema, the description covers visibility, approval prerequisite, media exclusion, and the preview/confirm cycle. The remaining gap is identifier semantics (scopeId format), which both the schema and description leave undocumented.

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 coverage is only 50%: scopeType has a description but text and scopeId have none. The description says 'text post' but never covers the 2000-character limit, what scopeId should contain, or how scopeType maps to it, so it fails to compensate for the coverage gap.

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 (publish a text post to a community) and implicitly scopes it to text-only, which separates it from the sibling create_community_post_with_media. The parenthetical 'photos/videos are added in the app' makes the boundary explicit.

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 a clear precondition ('only after the coach approves the wording') and rules out media attachments. It does not name create_community_post_with_media as the alternative route, so the routing is inferred rather than stated.

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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