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mc_set_block_glow

Highlight a specific block in Minecraft with a yellow outline or remove the highlight. Useful for drawing attention to signs, chests, or other blocks during development.

Instructions

Highlight a block in-world (yellow outline on 1.19, vanilla test-highlight on 1.21.11) or remove the highlight. Useful for pointing a specific sign / chest / etc. out to the user. Pair with mc_nearby_blocks to find positions; use mc_clear_block_glow to clear all highlights at once.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
xYes
yYes
zYes
glowYestrue to highlight, false to remove this position.
Behavior4/5

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

No annotations provided, so description carries full burden. It reveals version-specific behavior (1.19 vs 1.21.11) and the ability to add or remove highlights. Lacks details on persistence or side effects, but sufficient for a simple highlight tool.

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 sentences, front-loaded with core purpose, efficient. No wasted words.

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

Completeness5/5

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

For a tool with no output schema and 4 parameters, description covers purpose, usage, version-specific behavior, and cross-tool references. Complete and self-contained.

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 description coverage is only 25% (only glow described). Description mentions position parameters implicitly via 'block in-world' and cross-reference to mc_nearby_blocks, but does not add detailed parameter semantics. Some compensation but not full.

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?

Description clearly states the tool highlights a block in-world or removes the highlight, specifying version-dependent visual behavior. It distinguishes itself from sibling mc_clear_block_glow.

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

Usage Guidelines5/5

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

Explicit guidance: useful for pointing out specific blocks, recommends pairing with mc_nearby_blocks for position finding, and directs to mc_clear_block_glow for clearing all highlights.

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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