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backblaze-labs

Backblaze B2 MCP Server

Official

s3_delete_object

Destructive

Delete an object from a Backblaze B2 bucket using the S3 API. Optionally specify a version ID to remove a specific version.

Instructions

Delete an object from a B2 bucket. Optionally specify a version ID to delete a specific version.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
keyYesThe object key to delete.
bucketYesThe bucket name.
confirmNoConfirm this destructive/irreversible operation. Required when the server destructive policy is 'confirm' (the default).
versionIdNoVersion ID of the specific version to delete.
Install Server

TDQS

A3.5/5.0
Behavior3/5

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

Annotations already declare destructive and non-read-only behavior. The description adds minimal extra context by noting that version ID selects a specific version, but it does not disclose consequences like irreversibility or behavior in versioned buckets. This is acceptable but not rich.

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?

Two short sentences, front-loaded with the action and resource. Every word earns its place; no filler or unnecessary detail.

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 destructive 4-parameter tool with annotations and full schema coverage, this is minimally sufficient. However, it omits behavior on missing objects, versioning edge cases, and the bulk-delete alternative. Without an output schema, a bit more context would round it out.

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 coverage is 100%, and the description does not add meaning beyond what the schema already provides. The version-ID mention in the description only restates the schema field description, so the baseline of 3 applies.

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 states a specific verb ('Delete'), a clear resource ('an object from a B2 bucket'), and the optional version-ID behavior. It is immediately distinguishable from the sibling s3_delete_objects by the singular object scope.

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 given on when to use this tool versus alternatives. In particular, the sibling tool s3_delete_objects provides bulk deletion, and the description does not mention that distinction or any other selection criteria.

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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