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Aliyun RDS Supabase MCP Server

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by aliyun

list_storage_objects

Retrieve a list of objects stored in a Supabase storage bucket, with optional prefix filtering to target specific folders or paths.

Instructions

Lists objects within a specific storage bucket, optionally filtering by prefix.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNoMax number of objects to return
offsetNoNumber of objects to skip
prefixNoFilter objects by a path prefix (e.g., 'public/')
bucket_idYesThe ID of the bucket to list objects from.
Behavior3/5

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

No annotations are provided, so the description carries full burden. It mentions listing and optional prefix filtering but does not disclose pagination behavior (despite limit/offset in schema), auth requirements, or potential side effects. Adequate but has gaps.

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 sentence with 11 words, front-loading the core functionality. No redundancy or fluff.

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 and no output schema, the description is minimal. It does not describe the return format (e.g., list of object names, metadata) or any other behavioral details, leaving the agent underinformed.

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 baseline is 3. The description adds no extra meaning beyond what is in the schema; it simply reiterates the prefix filter without additional context.

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 verb 'lists', the resource 'objects within a specific storage bucket', and the optional 'prefix' filter, which distinguishes it from sibling tools like list_storage_buckets.

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 usage for listing objects in a bucket but does not provide explicit guidance on when to use versus alternatives like list_storage_buckets, nor any when-not-to-use conditions.

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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