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lrferr

mysql-mcp-server

by lrferr

get_foreign_keys

Retrieve all foreign keys for a specified MySQL table by connection and table name, so you can inspect relationships and constraints.

Instructions

Lista todas as chaves estrangeiras de uma tabela

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
tableNameYesNome da tabela
databaseNameNoNome do banco de dados
connectionNameYesNome da conexão

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.2.5

TDQS

B3.1/5.0
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, and it offers none beyond the word 'list'. It does not confirm the operation is read-only, say whether the connection must already exist, or describe scope/format of the returned list.

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 front-loaded sentence with zero redundancy. Nothing could be removed without losing meaning.

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?

For a simple read-only lookup tool with a fully documented schema and no output schema, the description is minimally sufficient. It falls short of explaining the relationship to overlapping constraint/structure tools or any filtering behavior.

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%, so tableName, databaseName, and connectionName are all documented in the schema itself. The description adds no additional parameter meaning, so the baseline of 3 applies.

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 states a specific verb and resource: listing all foreign keys of a table, which is clear and actionable. It does not, however, differentiate itself from similar siblings such as get_constraints or get_table_structure, which plausibly overlap with this information.

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?

There is no indication of when to use this tool versus get_constraints, get_table_info, or get_table_structure, nor any stated prerequisites. The agent must infer usage purely from the name.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.