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scratch-unified-mcp

scratch-unified-mcp

by blessed0x
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

Sb3 Rename Target

sb3_rename_target

Rename a sprite or stage in a Scratch project by supplying the existing name and the desired new name.

Instructions

Rename a sprite/stage target. (proxied)

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": {
      "name": "<name>",
      "newName": "<newName>"
    },
    "name": "sb3_rename_target"
  }
}

Input Schema

NameRequiredDescriptionDefault
nameYes
newNameYes

Output Schema

NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.4/5.0
Behavior2/5

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

With no annotations, the description carries full responsibility for behavioral disclosure. It only says 'Rename' and '(proxied)', which implies mutation but offers no details on side effects, error conditions, or what happens on conflicts. The 'proxied' hint is cryptic and unexplained.

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

Conciseness2/5

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

The description is extremely short, but this is under-specification rather than conciseness. It lacks structure, offers no front-loaded critical details, and leaves the 'proxied' note unexplained. The one-sentence format is not a model of efficiency when key information is missing.

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

Completeness2/5

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

Given the low complexity (two string params) and presence of an output schema, a fuller description is expected. The description omits how to identify the target, what 'proxied' means, any constraints on naming, and what the return value represents. It is not complete enough for reliable invocation.

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

Parameters1/5

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

The input schema has no descriptions (coverage 0%), and the description provides no explanation of 'name' and 'newName'. Although the names are intuitive, the description adds zero semantic value beyond the schema itself, and with 0% coverage, the description fails to compensate.

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

Purpose4/5

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

The description states a clear action: 'Rename a sprite/stage target.' It identifies the resource (target) and the operation (rename). While it doesn't explicitly differentiate from sibling tools like sb3_patch_target or sb3_set_sprite, the name and verb make its purpose fairly unambiguous.

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

Usage Guidelines2/5

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

No guidance is provided on when to use this tool versus alternatives. There is no mention of prerequisites, how to specify a target (by name? by ID?), or what the 'proxied' qualifier means. An agent would have no idea when this is the right choice over sb3_patch_target or other target-modifying tools.

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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