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Alibaba Cloud RDS OpenAPI MCP Server

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by aliyun

allocate_instance_public_connection

Allocate a public connection string for an Alibaba Cloud RDS instance, enabling external access to the database.

Instructions

allocate db instance public connection.
Args:
    region_id: The region ID of the RDS instance.
    db_instance_id: The ID of the RDS instance.
    connection_string_prefix: The prefix of connection string.
Returns:
    dict[str, Any]: The response.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
region_idYes
db_instance_idYes
connection_string_prefixNo
portNo3306
Behavior2/5

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

No annotations are provided, and the description only says 'allocate' without disclosing side effects, authorization needs, or behavioral impact. As a mutation tool, more transparency is needed.

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

Conciseness4/5

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

The description is concise and front-loaded, with a single sentence and a structured Args/Returns format. It wastes no words, though it could be slightly more informative without losing brevity.

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 no output schema and 4 parameters with 0% coverage, the description is insufficient for an agent to use the tool correctly. It lacks details on return behavior, constraints, or outcomes of allocation.

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?

Schema description coverage is 0%, so the description must compensate, but it only lists three parameters without explaining format or constraints. 'connection_string_prefix' is ambiguous, and the 'port' parameter is missing from the description.

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 action 'allocate db instance public connection' with a specific verb and resource, distinguishing it from sibling tools like describe or modify operations.

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?

No guidance is provided on when to use this tool versus alternatives, such as prerequisites, conditions, or when allocation is appropriate. The agent receives no context for decision-making.

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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