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letta_list_tools

List all tools available in the Letta system, with optional filtering by name, description, or tags.

Instructions

List all available tools in the Letta system.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
filterNoText filter for tool names/descriptions
tagsNoFilter by tool tags

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior3/5

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

No annotations are provided, so the description carries the full burden. It states 'List all available tools,' which implies a read-only operation, but does not disclose any behavioral traits such as authentication requirements, rate limits, or potential side effects. For a simple listing, this is adequate but lacks depth.

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?

The description is a single, concise sentence that front-loads the core functionality without unnecessary words. Every part earns its place.

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?

Given the tool has two optional parameters and an output schema, the description is reasonably complete. It could mention that results can be filtered by text or tags, but those details are already in the schema. The description is sufficient for a simple list tool.

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 100%, with both parameters ('filter' and 'tags') described in the input schema. The tool description does not add any additional meaning beyond what the schema provides, so the baseline score of 3 is appropriate.

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 clearly states 'List all available tools in the Letta system,' using a specific verb and resource. It distinguishes from sibling tools like letta_list_agents by focusing on tools.

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 use when wanting to list tools, but provides no explicit guidance on when to use this tool versus alternatives (e.g., letta_get_agent_tools) or when not to use it. No exclusions or conditions are mentioned.

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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