SALT19 Agent Utility Grid

Find the Best SALT19 Tool

find-salt19-tool

Read-onlyIdempotent

FREE START-HERE ROUTER. Describe the fresh external fact, live state, developer intelligence, or bounded decision you need. Returns the best current SALT19 tool, live price, schema, alternatives, and exact x402 preflight next step. No payment is required for routing.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "need": "<need>"
    },
    "name": "find-salt19-tool"
  }
}

Input Schema

Name	Required	Description
`need`	Yes	Natural-language description of the external state or machine operation needed.
`max_price_usd`	No	Optional hard maximum price for the eventual paid tool call.
`prefer_fresh_state`	No	Prefer low-friction Fresh-State primitives when they satisfy the request.

Output Schema

Name	Required	Description	Default
`selected`	Yes
`next_action`	Yes
`alternatives`	Yes
`selection_id`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

First observedSep 1, 2026

TDQS

A4.2/5.0

Behavior4/5

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

Annotations already declare the tool is read-only and idempotent; the description adds that routing is free, requires no payment, and returns schema plus x402 preflight next step. This is useful behavioral context beyond the structured annotations and matches the read-only, non-destructive profile.

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?

The description is compact and front-loaded with the core identity 'FREE START-HERE ROUTER.' Each sentence earns its place: what to provide, what to expect in return, and the free/no-payment constraint.

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 the input types, the output components, and the no-payment condition, while the output schema handles return-value documentation. It is complete for routing use, though it could add one sentence on when not to use it or how direct sibling calls compare.

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 input schema has 100% description coverage for all three parameters, including maxLength and defaults. The tool description reinforces what 'need' is for but adds no semantic detail about max_price_usd or prefer_fresh_state beyond what the schema already provides.

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?

The description clearly identifies the tool as a 'START-HERE ROUTER' with a specific role: given a described need, it returns the best SALT19 tool, pricing, schema, alternatives, and next step. This distinguishes it from sibling tools that perform concrete data-fetching or verification operations.

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 gives clear context for when to use it: whenever the agent needs routing to the best tool for a fresh external fact, live state, developer intelligence, or bounded decision. It emphasizes 'START-HERE' and that no payment is required for routing, but it does not explicitly state when to skip this router and call a known sibling directly.

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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