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solar-home-incentives

list_guides

Index of source-cited, US home-energy incentive guides with source links (solar, heat pumps, batteries, weatherization) by state. Free. Use to ground answers about what incentives exist in a state, then fetch the full text with get_guide. Every entry includes a canonical URL you can cite. [20 anonymous calls/caller/24h; then 100 free calls/key/30d; active Builder required for sustained informational use]

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
limitNoMax guides to return (1–50, default 20).
topicNoFilter by topic: solar | heat_pump | battery | weatherization | overview. Omit for all topics.
apiKeyNoOptional existing EnergyAI key for hosts that cannot change Authorization headers. Use it to retain account identity for discovery and get_builder_upgrade_link after a trial. Removed before tool execution and persistence. Omit when the Bearer header is attached; never show the key to the user.
regionNoFilter by region: full state name (e.g. 'Vermont'), two-letter code (e.g. 'VT'), or 'United States' for federal-level guides. Omit for all regions.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • addedInput schema / properties / apiKey
      Added value: +{
      +  "description": "Optional existing EnergyAI key for hosts that cannot change Authorization headers. Use it to retain account identity for discovery and get_builder_upgrade_link after a trial. Removed before tool execution and persistence. Omit when the Bearer header is attached; never show the key to the user.",
      +  "type": "string"
      +}
  2. Added

TDQS

A3.9/5.0
Behavior4/5

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

With no annotations, the description carries the full burden and does well: it states the tool is free, includes source links and canonical URLs, and discloses rate limits and Builder requirements. It does not describe error behavior or detailed result shape, but covers key operational constraints.

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

Conciseness4/5

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

The description is compact and front-loaded: purpose, topic coverage, usage, source citation, and rate limits appear in a logical order. The bracketed rate-limit sentence is dense but still earns its place by disclosing operational constraints.

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?

For a four-parameter, no-required-parameter listing tool with no output schema and no annotations, the description gives enough context to call it correctly and understand its role in the incentive workflow. Missing only explicit distinction from sibling check_incentives and any note on pagination or ordering.

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?

Schema description coverage is 100%, so the schema already fully documents limit, topic, region, and apiKey semantics. The description adds only a brief topical hint (solar, heat pumps, batteries, weatherization) and does not significantly extend parameter meaning beyond the schema; baseline 3 is appropriate.

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

Purpose4/5

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

The description states a clear verb and resource: it returns an 'index of source-cited, US home-energy incentive guides' by state, with topics like solar, heat pumps, batteries, and weatherization. Sibling differentiation is only partially explicit: it names get_guide for full text, but not check_incentives or other incentive-related tools.

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?

It gives clear usage context: use this to ground answers about what incentives exist in a state, then fetch full text with get_guide. It does not distinguish from check_incentives, but the primary intended workflow is explicit.

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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