Trainzilla Coach MCP

confirm_direct_payment_claim

Confirm a client's direct payment arrived: activates their plan (creating the account if needed) and records the payment. Only after the coach has seen the money. (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": {
      "id": "<id>"
    },
    "name": "confirm_direct_payment_claim"
  }
}

Input Schema

Name	Required	Description	Default
`id`	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

A4.4/5.0

Behavior5/5

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

Adds substantial behavior beyond the readOnlyHint=false annotation: it discloses the side effects (plan activation, account creation, payment recording) and the two-phase confirm-gated semantics (previews until confirm:true). This is exactly the mutation/irreversibility context an agent needs.

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

Conciseness5/5

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

Tight, front-loaded sentences: purpose first, precondition second, gating semantics last. Every clause carries useful information with no waste.

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 mutation tool with no output schema, the description adequately covers side effects and the preview/confirm gate. The remaining gap is the unspecified id parameter, but the core behavior is complete enough to invoke correctly.

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 coverage is 50%: the confirm parameter is already documented in the schema, and the description only echoes the confirm-gate behavior. The id parameter (the claim identifier) is undocumented in both schema and description, so no added meaning beyond structured data.

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 ('Confirm a client's direct payment claim') and enumerates the concrete effects (activates plan, creates account if needed, records the payment). This clearly distinguishes it from siblings like reject_direct_payment_claim and list_direct_payment_claims.

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?

'Only after the coach has seen the money' provides a clear precondition for use. It does not explicitly name the reject alternative or spell out when-not to use it, but the implied confirm/reject decision flow is legible.

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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