Generate a prefilled URL without running calculation
| Name | Required | Description | Default |
|---|---|---|---|
| inputs | Yes | Input values for URL | |
| strict | No | If true, reject invalid or unknown input fields instead of dropping them | |
| calculator | Yes | Calculator slug |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It only states a negative behavior ('without running calculation') and does not mention side effects, prerequisites, return format, or validation behavior. The 'strict' parameter behavior is only explained in the schema, not the description.
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 a single, front-loaded sentence with no filler. Every word earns its place, clearly stating the action and the key differentiator ('without running calculation'). This is exemplary conciseness.
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?
Given the tool has no output schema and no annotations, the description should explain what the returned URL looks like and when to use the tool. It only provides a minimal statement. The nested 'inputs' object and 'strict' parameter are not contextualized. The description is too sparse for a tool with this complexity, leaving agents without enough information to invoke it confidently.
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%, so the baseline is 3. The description adds no additional parameter information beyond the schema, and the schema's descriptions are adequate for the params (calculator slug, input values, strict flag). No extra semantics are needed.
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 clearly states the tool's purpose: 'Generate a prefilled URL' with the explicit qualifier 'without running calculation'. This distinguishes it from sibling calculation tools like calculate and calculate_cas. The verb 'generate' is specific and the resource 'prefilled URL' is well-defined in context.
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 phrase 'without running calculation' implies a use case distinct from the calculate siblings, but it does not explicitly state when to use this tool vs alternatives. No exclusions or prerequisites are mentioned, so guidance is only implied rather than explicit.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
calculate_cas and calculate_cas_headless are explicitly aliases, creating two tools for the same purpose. Also, calculate and generate_prefilled_url both produce prefilled URLs, so their boundaries are not fully distinct.
Most tools follow a verb_noun pattern (calculate, create_session, get_session_state, list_calculators). The main deviation is calculate_cas_headless, which still fits the pattern but is an awkward alias name.
The 10-tool count is reasonable for a calculator service with session management. However, the alias tool is redundant and could be removed without losing functionality.
The tool set covers listing calculators, getting schemas, running calculations (standard and CAS), managing sessions, and generating URLs. Minor gaps like a dedicated way to delete sessions are addressed by close_session, so coverage is adequate.