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lcm2m-caddis-mcp

by LCM2M

Equipment telemetry data points

caddis_get_equipment_telemetry
Read-onlyIdempotent

Retrieve raw telemetry data points for a piece of equipment within a specified time window. Use ISO 8601 start, optional end, limit, and sort order to control output.

Instructions

Raw telemetry data points for a piece of equipment within a time window. Very chatty — always scope with a tight window and limit.

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 indicate readOnly, openWorld, idempotent. Description adds vital behavioral context: chatty nature, TOON encoding format with detailed examples. 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.

Conciseness3/5

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

Front-loaded with warning and purpose, but then a large block of encoding specification (which is necessary for understanding output). Could be more concise, but structure is logical.

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

Completeness5/5

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

No output schema, so description fully compensates by explaining the TOON encoding format with examples. Covers output structure comprehensively. Annotations provide safety context. Complete for a data retrieval tool.

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%, so baseline is 3. Description echoes 'tight window and limit' but adds no new semantic meaning beyond schema descriptions.

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 states 'Raw telemetry data points for a piece of equipment within a time window.' Specific verb+resource: 'get' + 'telemetry'. Easily distinguished from siblings like utilization, schedule, cycles, statuslogs.

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?

Explicitly warns 'Very chatty — always scope with a tight window and limit.' Provides clear usage context. Does not explicitly name alternative tools for non-telemetry needs, but that's acceptable given sibling list.

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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