Turn any podcast identifier into an OP3 show uuid

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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, openWorld), and the description adds genuinely useful context: it reports which identifier kind was recognized, and it explains what a failure implies (the feed lacks the OP3 prefix, so OP3 has no data). This failure-mode disclosure goes beyond the annotations.

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?

Three short sentences, front-loaded with the core purpose, then usage ordering, then failure interpretation — every sentence earns its place with zero redundancy.

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?

No output schema exists, so the description wisely notes that the response reports which identifier kind was recognized. For a single-param resolver with full annotation coverage this is nearly complete, though it could say more about the returned uuid payload shape.

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 description coverage is 100% and the schema already documents the three accepted identifier forms with format detail (32 hex chars, dashed GUID, URL). The description restates the same three forms at a coarser level, adding little beyond the schema. Baseline 3 applies.

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 transformation ('turn any podcast identifier into an OP3 show uuid') and enumerates the accepted identifier kinds, so the agent knows exactly what the tool does. It is clearly distinct from siblings like op3_get_show (which presumably consumes a uuid) and op3_verify_prefix.

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?

'Use this first when you have a feed URL and need the uuid every other tool wants' gives an explicit ordering and trigger condition relative to siblings. It also explains the failure case (no OP3 prefix, hence no data), which is strong guidance, but it does not name a specific alternative tool to try instead.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.