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mame_save_state

Create a named save state in MAME to preserve and restore emulator progress during reverse engineering tasks.

Instructions

Save a MAME save state by name.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYes
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states the action and says nothing about overwrite behavior, storage location, failure conditions, or side effects. For a mutation operation, this is a significant transparency gap.

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?

A single, short sentence that immediately conveys the tool's purpose. Every word earns its place; there is no redundant information.

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

Completeness3/5

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

Given the tool's simplicity (one parameter, no output schema), the description is minimally adequate. However, it omits important context such as whether a game must be running, whether existing save states are overwritten, or how the save state is identified. For a novice agent, this could be insufficient.

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

Parameters2/5

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

The schema has one parameter (name) with zero description coverage. The description adds 'by name', which is almost tautological and does not clarify what the name represents or its format constraints. The parameter semantics are left largely unexplained.

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 uses a specific verb ('Save') and resource ('MAME save state') with a clear qualifier ('by name'). It unambiguously distinguishes from the sibling tool mame_load_state, which performs the inverse operation.

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

Usage Guidelines3/5

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

The description implies usage: use this when you want to create a save state with a specific name. However, it does not explicitly state when to prefer this over alternatives or mention any prerequisites (e.g., a running MAME session), so the guidance is only implicit.

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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