Display a Base64-encoded PNG on a MindReset device screen by device ID, with optional tap-to-jump link and border color.
Display PNG image on a MindReset device screen
| Name | Required | Description | Default |
|---|---|---|---|
| link | No | HTTP/HTTPS link or Scheme URL for tap-to-jump | |
| image | Yes | Base64 encoded PNG image data (296px*152px) | |
| border | No | 0 for white border, 1 for black border | |
| deviceId | Yes | Device serial number |
Changes observed during successful MCP inspections.
v1.0.0Does 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 states that an image is displayed, but does not explain device-side effects, whether the image replaces current content, error behavior, or any other operational trait beyond what the schema already documents.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single, front-loaded sentence with no wasted words. It is appropriately sized for the core action.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With no annotations and no output schema, the description should provide more context for a device-mutating tool. It omits when to use this versus sibling text tools and gives no behavioral details about the display action beyond the basic purpose.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the schema fully documents deviceId, image, link, and border. The description adds no parameter meaning beyond the schema, making the baseline score of 3 appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description gives a clear verb and resource: display a PNG image on a MindReset device screen. The resource type distinguishes it from the sibling text tools, but it does not explicitly name or contrast those alternatives.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
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 tool versus the sibling text-display tools or any other alternative. Usage is only implied by the purpose statement.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.