List visible S3 buckets with pagination to browse storage. Use max_keys and continuation_token to page through results and discover available buckets.
List visible buckets with pagination.
| Name | Required | Description | Default |
|---|---|---|---|
| max_keys | No | ||
| continuation_token | No |
Changes observed during successful MCP inspections.
v0.1.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full behavioral burden. It discloses 'visible' buckets and pagination, which adds useful context beyond the schema, but omits auth requirements, return format, and whether visibility is account-scoped or permission-scoped.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
One short sentence with no waste, front-loading the action and resource. It is appropriately sized for a simple list operation.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a tool with no annotations, no output schema, and zero schema description coverage on 2 parameters, the description is minimal. It leaves parameter meaning, return shape, and pagination mechanics unexplained.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0% and the description mentions only 'pagination', which loosely corresponds to max_keys and continuation_token. It does not explain the relationship between the parameters or their syntax, leaving most semantics undocumented.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
States a specific verb and resource: listing buckets. It is distinguishable from siblings like s3_list_objects or s3_list_object_versions by the resource 'buckets'. However, it doesn't call out the distinction explicitly, so an agent must infer it from the resource name.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The mention of 'visible' and 'pagination' implies usage context, but no explicit when-to-use, when-not-to-use, or sibling alternatives are given. An agent gets a weak signal without direction.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.