AgentIndex — measured reliability for agent services

get_demand_preview

Free preview of the AgentIndex Builder Demand Report: the top three themes builders are asking about right now, with signal counts. The full report -- evidence, supply gaps, release inventory and recommendations -- is the priced tool get_demand_report.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "get_demand_preview"
  }
}

Input Schema

Name	Required	Description	Default
`days`	No	Window in days, 1-90 (default 7)

Schema Changelog

Changes observed during successful MCP inspections.

AddedAug 22, 2026

TDQS

A4/5.0

Behavior3/5

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

There are no annotations, so the description must disclose behavior. It states the tool is 'free' and returns specific data (top three themes with signal counts). However, it does not explicitly state whether the operation is read-only, whether any authentication is required, or any rate limits. For a simple preview tool these omissions are minor, but the description could be more explicit about the scope of data (only top 3) and the fact that it's a summary, not live data.

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

Conciseness5/5

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

Two sentences, front-loaded with the core purpose, then a clear contrast with the full report. No wasted words or repetition.

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?

The description covers what the tool returns, what it excludes, and how to access the full version. Given the tool's simplicity (one optional parameter, no output schema), this is nearly complete. A minor gap is not specifying whether the preview reflects live data or a sample, but this is likely not critical for a preview.

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?

The only parameter 'days' is fully documented in the schema with its range and default. The description does not mention the parameter, but with 100% schema coverage the baseline of 3 applies, and no additional meaning is needed.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly identifies the tool as a free preview of the AgentIndex Builder Demand Report and specifies the content (top three themes with signal counts). Differentiates from sibling get_demand_report by explicitly stating what the full report contains and that it's priced. This makes the tool's purpose unambiguous.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description directly contrasts the preview with the full get_demand_report tool, indicating that users seeking comprehensive data should use get_demand_report instead. It does not explicitly state a condition for using the preview, but the free/priced distinction implies usage for quick insights without paying. This provides clear routing to the alternative.

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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