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pbs_s3_check

Check an S3 client configuration's connectivity and credentials against a Proxmox Backup Server endpoint. Dry-run by default; use confirm=true to execute a live probe.

Instructions

MUTATION: perform a basic sanity check for a PBS S3 client configuration.

RISK_LOW: PUT verb, but genuinely non-config-mutating (schema-confirmed: PBS's own state never changes, returns null) — this is a read-shaped probe that makes a REAL outbound network call to the configured S3 endpoint using its stored credentials. Confirm-gated anyway (verb is not the safety signal): this endpoint has no safe default to fall back on (unlike pbs_tape_media_list's update_status=False) — every invocation's whole purpose is the live probe; see proximo.pbs_s3 module docstring fact #6 for the full argued reasoning (weighed against both the pbs_tape_media_destroy and pbs_notification_target_test precedents). Dry-run by default (returns a PLAN, nothing is called); confirm=True executes (PUT /admin/s3/{s3-endpoint-id}/check) and returns {"status": "ok", "result": None}. Needs PROXIMO_PBS_* config.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
s3_idYesS3 client config id to check.
bucketYesBucket name for the S3 object store (3-63 chars). REQUIRED.
confirmNoFalse (default) returns a dry-run PLAN only; True runs the live check.
store_prefixNoStore prefix within the bucket for S3 object keys (commonly a datastore name).
proximo_targetNoWhich configured Proxmox target to run this call against — a target name from your multi-target config (a specific PVE/PBS/PMG/PDM box). Omit to use the single/default target from the environment; the selection applies only to this call.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior5/5

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

Exceptionally detailed: discloses PUT verb but non-mutating, returns null, makes real outbound call, confirm-gated with dry-run default, and requires PROXIMO_PBS_* config. No annotations exist, so description carries full burden and meets it thoroughly.

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

Conciseness2/5

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

Overly verbose with internal reasoning, cross-references to other tools, and argued precedents. While front-loaded with key point, significant trimming would improve readability for an AI agent.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers operation, dry-run behavior, config needs, and references. Output schema exists so return values not required. Somewhat complete but the verbose style undercuts clarity.

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 covers 100% of parameters, so baseline is 3. Description adds minor environmental context (PROXIMO_PBS_* config) but no additional parameter semantics beyond schema.

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?

Clearly states 'perform a basic sanity check for a PBS S3 client configuration' and explains the PUT verb's non-mutating nature. While effectively communicates purpose, lacks explicit differentiation from sibling S3 tools like pbs_s3_client_create.

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?

Implies usage for testing/debugging via dry-run and confirm flags, and mentions PROXIMO_PBS_* config requirement. However, no explicit guidance on when to use vs alternatives or when not to use.

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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