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LCM2M

lcm2m-caddis-mcp

by LCM2M

Excessive downtimes under an org unit

caddis_list_org_unit_excessive_downtimes
Read-onlyIdempotent

Retrieve excessive downtime (XSF) events for all equipment under an organizational unit within a specified time window. Requires both start and end ISO 8601 timestamps.

Instructions

Excessive downtime (XSF) events across every piece of equipment under an org unit in a closed time window. Both start and end are required.

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
endYesISO 8601 window end (required)
startYesISO 8601 window start (required)
orgUnitIdYesNumeric identifier (accepts either string or number form)
Behavior4/5

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

Annotations already declare readOnlyHint, openWorldHint, and idempotentHint. The description adds valuable context on the TOON encoding format for response interpretation, which is a non-obvious behavioral trait. No contradictions 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.

Conciseness3/5

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

The description is lengthy due to the detailed TOON format explanation. While necessary for understanding the response, it could be more concise. The structure is clear: first line states purpose, then format details.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema is provided, so the description must explain return values. It explains TOON formatting with a generic example, but does not specify the fields specific to excessive downtime events (e.g., duration, reason). This leaves ambiguity about the actual response structure.

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 coverage is 100%; each parameter has a description. The description does not add new information beyond the schema, merely stating that start and end are required. Baseline score of 3 is appropriate.

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?

Title and description clearly state the tool lists excessive downtime events across equipment under an org unit within a closed time window. It distinguishes from sibling tools like caddis_list_equipment_excessive_downtimes (per equipment) and caddis_get_org_unit (org unit details).

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

Usage Guidelines3/5

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

The description implies usage for org-unit-level downtime data but lacks explicit guidance on when to use this tool vs. alternatives like caddis_list_equipment_excessive_downtimes. No 'when not' or alternative names are provided.

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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