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data_generate_from_schema

Generate realistic sample data from a JSON schema, TypeScript interface, or database schema. Choose count and format—JSON, CSV, or SQL—to populate test systems.

Instructions

Generate sample data from a JSON schema, TypeScript interface, or database schema

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
countNoNumber of records to generate
formatNoOutput format: 'json', 'csv', or 'sql'
schemaYesJSON schema, TypeScript interface, or SQL table definition
api_keyNoAPI key for authentication
Behavior2/5

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It doesn't mention whether an external API call occurs, why api_key is needed, what side effects exist, or what happens with invalid schemas. The description only states the high-level action, leaving important behavior undisclosed.

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, focused sentence with no filler or redundant phrasing. It front-loads the core action and input types, making it easy for an agent to quickly parse.

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?

For a tool with 4 parameters, no annotations, and no output schema, the description is too sparse. It doesn't explain return format, default behavior, how api_key is used, or when to prefer this over the many similar generation tools. An agent would lack critical context for correct invocation.

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%, and each parameter is already described in the input schema. The description adds no extra meaning about count, format, api_key, or the schema parameter beyond the schema itself. Baseline 3 applies because the schema does the heavy lifting.

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 clearly states the verb 'generate' and the resource 'sample data', and specifies the accepted input types (JSON schema, TypeScript interface, database schema). It distinguishes the core function from many sibling tools, though it doesn't explicitly differentiate from closely related tools like data_generate_realistic or seed_from_schema.

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?

The description provides no guidance on when to use this tool versus alternatives. There is no mention of exclusions, prerequisites, or conditions that would route an agent to a sibling like data_generate_edge_cases or seed_from_schema. The agent must infer usage from the name alone.

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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