Digital Maker AI

get_animation_pack_link

A secure checkout link for an Animation Pack, for when the user wants more animated scenes than they have left. Nothing is charged unless the user opens the link and pays. Packs: starter 5 scenes $9, creator 11 scenes $19, studio 43 scenes $69. They never expire.

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": {
      "pack": "<pack>"
    },
    "name": "get_animation_pack_link"
  }
}

Input Schema

Name	Required	Description	Default
`pack`	Yes	Which pack.
`video_id`	No	Optional: the video being animated, so the user lands back on it after paying.

Schema Changelog

Changes observed during successful MCP inspections.

First observedOct 17, 2026

TDQS

A4.4/5.0

Behavior4/5

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

With no annotations, the description carries the full behavioral burden and does well on the highest-risk point: 'Nothing is charged unless the user opens the link and pays' and 'They never expire' tell the agent this is a non-destructive, non-committal action. It omits how the link is returned, whether it is single-use, or any auth/account coupling.

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?

Three tight sentences, front-loaded with the purpose, followed by the billing reassurance and the pricing tiers. Every clause carries information the agent or user needs; nothing is padded.

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 simple two-parameter purchase-link tool with no output schema, the description covers purpose, trigger, pricing, and the no-charge guarantee. It does not describe what the caller receives back (presumably a URL) or whether the link is tied to the requesting account, which is the remaining gap.

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

Parameters4/5

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

Schema coverage is 100%, so the baseline is 3, but the description goes beyond the bare 'Which pack.' schema text by mapping each enum value to its scene count and price (starter 5 scenes $9, creator 11/$19, studio 43/$69), which helps the agent pick the right tier. The optional video_id is left to the schema's own explanation.

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?

The description names a specific deliverable — a secure checkout link for an Animation Pack — and states the triggering situation (the user wants more animated scenes than they have left). That condition implicitly separates it from the animate_scenes sibling, which consumes scenes rather than selling more, so an agent can route correctly without opening the schema.

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?

It gives a clear when-to-use trigger ('when the user wants more animated scenes than they have left'), which is exactly the context an agent needs. It does not name an explicit alternative tool or state when not to use it, so it stops short of the top score.

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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