get_pricing

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

With no annotations present, the description carries the full burden of disclosing behavior. It does so by stating that no API key is required, which is a meaningful auth/invocation detail, and by enumerating what will be returned (plans, pay-as-you-go rates, signup URLs). It does not mention return format or caching, but for a simple no-parameter information tool, the key behavioral facts are communicated.

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?

Two sentences with no filler. The main purpose is front-loaded, the contents are itemized, and the final sentence adds the authentication note. Every clause earns its place.

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 zero-parameter, no-schema, informational tool, the description covers all an agent needs: what info is returned (subscription plans, pay-as-you-go rates), what is included (signup URLs), and whether auth is required (no API key). No critical context is missing.

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?

The tool has zero parameters, and the schema is empty, so parameter-level documentation is unnecessary. Baseline for 0 parameters is 4, and the description appropriately focuses on what the tool returns rather than on parameters that do not exist.

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 states a specific verb and resource ('Get Scriptivox pricing information') and enumerates the specific contents (subscription plans, API rates, signup URLs). This distinguishes it clearly from sibling tools like get_product_info and get_api_docs, which target different kinds of information.

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 makes the use case obvious: retrieving pricing details for Scriptivox. It also adds a practical usage context with 'No API key required', signaling the tool is accessible without authentication. It does not explicitly state when not to use this tool or give alternatives, but for a zero-parameter, read-only info tool, this level of guidance is adequate.

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