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PrusaMCP

PrusaMCP

by Noosbai
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Hybrid

Envoyer un G-code à l'imprimante

upload_print

Upload G-code files to OctoPrint or PrusaConnect servers to start 3D printing. Requires server URL, API key, and file path.

Instructions

Upload un fichier G-code vers OctoPrint ou PrusaConnect pour lancer l'impression. Nécessite l'URL du serveur et une API key.

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": {
      "gcode_path": "<gcode_path>",
      "server_type": "<server_type>",
      "server_url": "<server_url>",
      "api_key": "<api_key>"
    },
    "name": "upload_print"
  }
}

Input Schema

NameRequiredDescriptionDefault
gcode_pathYesChemin du fichier G-code à envoyer
server_typeYesType de serveur d'impression
server_urlYesURL du serveur (ex: http://192.168.1.100:5000 pour OctoPrint)
api_keyYesClé API pour l'authentification
start_printNoLancer l'impression immédiatement après l'upload

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

B3.3/5.0
Behavior2/5

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

With no annotations provided, the description carries full burden for behavioral disclosure. It mentions authentication needs (API key) which is valuable, but fails to describe critical behaviors: whether this overwrites existing files, what happens if the print starts immediately, error handling for invalid G-code, or response format. For a tool that initiates physical printing, this leaves significant gaps in understanding its operational impact.

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 appropriately brief (two sentences) and front-loaded with the core purpose. Every sentence contributes essential information about the tool's function and requirements. While efficient, it could be slightly more structured by separating purpose from prerequisites.

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?

For a tool with 5 parameters, no annotations, and no output schema that initiates physical printing, the description is insufficient. It doesn't explain what happens after upload, how to verify success, error conditions, or safety considerations. The combination of mutation behavior (uploading and potentially starting prints) with minimal behavioral disclosure creates significant gaps for agent understanding.

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%, providing complete parameter documentation. The description adds minimal value beyond the schema, only mentioning server URL and API key requirements which are already covered in the schema. It doesn't explain parameter interactions or provide additional context about how parameters affect the upload/print process.

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 the specific action ('upload un fichier G-code') and target resources ('vers OctoPrint ou PrusaConnect'), with the explicit goal 'pour lancer l'impression'. It distinguishes this from sibling tools like 'slice_prusaslicer' or 'postprocess_gcode' by focusing on file transfer and print initiation rather than file creation or analysis.

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 context by mentioning server types and authentication requirements, but provides no explicit guidance on when to use this tool versus alternatives like 'print_wizard' or 'slice_prusaslicer'. It states prerequisites (URL and API key) but doesn't clarify exclusion scenarios or direct comparisons with sibling tools.

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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