export_pbit_url

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

With no annotations, the description carries the full burden. It reveals that the tool compiles, saves a .pbit to a server, and returns a URL, plus an environment variable dependency. However, it does not disclose side effects on the session, authorization needs, or whether multiple calls overwrite.

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?

The description is two sentences, front-loaded with the main action, and contains no unnecessary words. Every sentence adds value.

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?

The description covers the main action and a prerequisite. With an output schema present (but not shown), it likely covers the return. However, it omits details about session behavior after compilation, persistence of the URL, and authentication requirements, leaving some gaps for a complex tool.

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%, so the description must compensate. The only parameter session_id is not explained; the description mentions 'the current session' but does not clarify that session_id identifies it. This leaves the agent guessing about the parameter's role.

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?

The description uses specific verbs: 'Compile', 'save', 'return', and clearly identifies the resource: 'current session', '.pbit on the hosted server', 'public download URL'. It distinguishes from sibling export_pbit_file by specifying that the output is a URL rather than a file.

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 description mentions a prerequisite ('Set PUBLIC_BASE_URL on Railway') but does not explicitly compare this tool with alternatives like export_pbit_file or export_pbix. An agent could infer usage from the action (returning a URL) but lacks guidance on when not to use it.

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