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sevoniva

OceanBase MCP

by sevoniva

Generate Schema Documentation

ob_generate_schema_doc

Generate JSON or Markdown documentation for visible tables in a database schema, including relationships and column details.

Instructions

Generate bounded JSON or Markdown documentation for visible tables in one schema.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
titleNo
formatNomarkdown
schemaNo
profileNo
maxTablesNo
tablePatternNo
relationshipLimitNo
maxColumnsPerTableNo
includeRelationshipsNo
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 only says 'Generate bounded JSON or Markdown documentation' without explaining what 'bounded' means operationally (e.g., limits enforced by maxTables, relationshipLimit, etc.), nor does it mention read-only nature, permissions, or performance implications.

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

Conciseness3/5

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

The description is a single sentence and not verbose, but its brevity sacrifices necessary detail. It could be restructured to front-load the purpose while still including key parameter hints. As is, it is minimally acceptable in length but inadequate in content.

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 tool's complexity (9 parameters, no annotations, no output schema), the description is severely incomplete. It does not explain the 'bounded' concept, parameter roles, or output format structure. The agent would need to guess how to use the tool effectively.

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 9 parameters with 0% schema description coverage. The description adds no meaning to any parameter; it only loosely references 'one schema' which corresponds to the 'schema' parameter. Critical parameters like title, format, maxTables, tablePattern, etc., are left entirely unexplained, leaving the agent without guidance on how to populate them.

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 the tool generates bounded JSON or Markdown documentation for visible tables in one schema. The verb 'Generate' and resource 'schema documentation' are specific, and the mention of 'JSON or Markdown' clarifies output format. Among many sibling 'generate' tools, this one is distinct as it pertains to schema-level documentation, not table or query-level.

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 provides implicit usage context by mentioning 'one schema' and 'visible tables', but it does not explicitly state when to use this tool versus alternatives like ob_generate_table_doc or ob_generate_data_dictionary. No when-not-to-use or alternative guidance is given.

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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