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lcm2m-caddis-mcp

by LCM2M

Equipment status logs

caddis_get_equipment_statuslogs
Read-onlyIdempotent

Fetches equipment status log transitions (running/down) within a time window, returning each status change as a row with optional sorting and limit.

Instructions

Running/down status log transitions for a piece of equipment within a time window. Each row is a status change; pair with statusreasons to decode reason IDs.

Responses are TOON-encoded (toonformat.dev) — a token-efficient JSON dialect mixing YAML-style indentation with CSV-style tables. Example:

name: Caddis Co timezone: America/Denver equipment[3]{id,name,tags,current_status.status,current_status.reason_id}: 1,Mill A,"["cnc","critical"]",running,null 2,"Press, Big",null,down,3 3,Lathe C,null,null,null

  • Object fields: key: value; nested objects indent their children.

  • Uniform arrays of objects: field[N]{cols}: followed by N indented comma-separated rows in column order.

  • Nested objects inside table rows are recursively flattened to dotted columns (e.g. current_status.status, input_setup.cycle.logic); a null parent yields null across all its dotted columns (see row 3 above).

  • Primitive arrays at object level: field[N]: a,b,c inline.

  • Arrays inside table cells are JSON-stringified into a single cell value (JSON.parse() to recover); empty arrays render as null (see rows 1–3 tags column).

  • Strings with commas/colons/quotes/leading whitespace are double-quoted (escapes: \\, \"); other strings, numbers, booleans, and null are bare.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
endNoISO 8601 window end (defaults to now)
limitNoMax rows to return (backend default 5000). Keep modest to avoid token-blowing large response bodies.
orderNoSort order, 'ASC' or 'DESC' (default DESC)
startYesISO 8601 window start (required)
equipIdYesNumeric identifier (accepts either string or number form)
Behavior5/5

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint. The description adds significant value by detailing the TOON-encoded response format with examples and parsing rules, which is crucial for correct invocation. It also advises on limit parameter to avoid large responses. No contradiction with annotations.

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 front-loaded with purpose, then provides a comprehensive TOON format explanation. While lengthy, the format details are necessary for tool use without an output schema. Could be slightly more concise but well-structured with examples.

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?

No output schema exists, so description compensates by explaining response format in depth. Covers time-window filtering, status changes, and cross-referencing with statusreasons. Doesn't address error cases or authentication, but those are standard. Overall adequate for the tool's complexity.

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 baseline is 3. The description adds marginal value: it refers to 'statusreasons' for decoding but doesn't add parameter-level detail. The limit parameter advice is present in schema already. Adequate but not above baseline.

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 states 'Running/down status log transitions for a piece of equipment within a time window' identifying the specific verb (get) and resource (status logs). It distinguishes itself from sibling tools like caddis_get_equipment_utilization or caddis_get_equipment_cycles by focusing on status transitions.

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 provides usage context: 'pair with statusreasons to decode reason IDs' hints at a related tool, but lacks explicit when-to-use or when-not-to-use guidance compared to alternatives. The tool name and context signals make purpose clear, so no misleading info.

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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