Skip to content

PrintPal

by printpal.io · remote · no sign-in to list tools · v1.0.0 · published by io.printpal

3D printing: printable models, calculators, troubleshooting wiki, build guides, AI 3D + CAD design.

Changes · 7
CompareRegistry entry

16 tools: 7 change things and 9 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http printpal https://printpal.io/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warncalculate_filament_usage

    The server marks "calculate_filament_usage" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "convert": a word for a change.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

16 tools

Changes things 7Claude Code: ask
  • calculate_filament_usageConvert filament grams to metres (and back), compute volume and cost, and estimate how much is left on a spool from its gross weight.1 finding

    Why it is in this group

    • The description's first verb is "convert": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "calculate_filament_usage" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "convert": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Convert filament grams to metres (and back), compute volume and cost, and estimate how much is left on a spool from its gross weight. Knows densities for PLA, PETG, ABS, ASA, TPU, Nylon, PC, CF blends. Give either `grams` or `meters`.

    Annotations the server declares

    • title: Filament weight ⇄ length ⇄ cost
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • calculate_layer_heightsCompute the Z-axis "magic number" layer heights for a printer from its stepper step angle, microstepping and lead-screw pitch/starts, filtered to what suits the nozzle.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Compute the Z-axis "magic number" layer heights for a printer from its stepper step angle, microstepping and lead-screw pitch/starts, filtered to what suits the nozzle. Defaults match most Ender/Prusa-style printers (1.8°, 1/16, T8 2 mm × 4 starts → 0.04 mm steps).

    Annotations the server declares

    • title: Layer height magic numbers
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • calculate_print_costEstimate what an FDM print costs (material, electricity, machine wear, labor, failure allowance) and a suggested selling price.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Estimate what an FDM print costs (material, electricity, machine wear, labor, failure allowance) and a suggested selling price. Needs the print weight in grams and time in hours from the slicer; all other inputs have sensible defaults (1 kg spool at $20, 120 W printer, $0.12/kWh, 5% failures).

    Annotations the server declares

    • title: Calculate 3D print cost
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • calculate_volumetric_flowCheck whether a hotend can keep up: volumetric flow (mm³/s) = layer height × line width × speed, compared against the hotend limit, plus the maximum safe speed.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Check whether a hotend can keep up: volumetric flow (mm³/s) = layer height × line width × speed, compared against the hotend limit, plus the maximum safe speed. Accepts a hotend preset name (stock, v6, bambu, volcano, rapido, high-flow, goliath…) or an explicit max flow.

    Annotations the server declares

    • title: Volumetric flow / max speed check
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • check_3d_generationPoll a PrintPal AI generation started with `generate_3d_model` in API-key mode.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Poll a PrintPal AI generation started with `generate_3d_model` in API-key mode. Returns status (queued/processing/completed/failed) and, when completed, a time-limited download URL for the mesh.

    Annotations the server declares

    • title: Check AI 3D generation status / get download
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • design_parametric_cadFor mechanical / functional parts with exact dimensions — brackets, enclosures, adapters, gears, bins, knobs, mounts — open PrintPal's AI CAD agent with a ready-to-run brief.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    For mechanical / functional parts with exact dimensions — brackets, enclosures, adapters, gears, bins, knobs, mounts — open PrintPal's AI CAD agent with a ready-to-run brief. The agent writes editable OpenSCAD with parameter sliders, live 3D preview and STL/3MF/STEP export. This tool improves the user's description into a precise CAD brief (dimensions, tolerances, mounting, print orientation) and returns the link; the user clicks it to generate.

    Annotations the server declares

    • title: Design a parametric part with the AI CAD agent
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • generate_3d_modelTurn a text prompt or an image into a print-ready 3D mesh (STL/GLB/OBJ geometry) with PrintPal's AI generator.No findings

    Why it is in this group

    • The name "generate_3d_model" says "generate": a word for a change.
    Description, as the server wrote it
    Turn a text prompt or an image into a print-ready 3D mesh (STL/GLB/OBJ geometry) with PrintPal's AI generator. Without a PrintPal API key this returns a link that opens the generator on printpal.io with the prompt prefilled; nothing is generated until the user clicks it. With an API key header (`Authorization: Bearer pp_live_…`) it submits the job to the user's own account, spends that account's credits, and returns a `generation_uid` that `check_3d_generation` accepts. Suited to organic/sculptural objects (figurines, animals, props); exact-dimension mechanical parts are handled by `design_parametric_cad`.

    Annotations the server declares

    • title: Generate a 3D model with AI (text or image → STL/GLB/OBJ)
    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
Only reads 9Claude Code: allow
  • fetchFetch the full content of a PrintPal item returned by `search` (or any id of the form `model:<uid>`, `tool:<slug>`, `wiki:<slug>`, `doc:<slug>`, `resource:<slug>`, `project:<slug>`…No findings

    Why it is in this group

    • The name "fetch" says "fetch": a word for reading.
    Description, as the server wrote it
    Fetch the full content of a PrintPal item returned by `search` (or any id of the form `model:<uid>`, `tool:<slug>`, `wiki:<slug>`, `doc:<slug>`, `resource:<slug>`, `project:<slug>`, `course:<slug>`). Returns the complete text (article body, transcript, build steps, BOM, model description and files) plus the canonical URL for citation.

    Annotations the server declares

    • title: Fetch a PrintPal item
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • find_3d_printing_toolRecommend the right free PrintPal browser tool for a task: print cost / resin cost / layer height (magic numbers) / E-steps / flow rate / volumetric flow / filament spool / drying …No findings

    Why it is in this group

    • The name "find_3d_printing_tool" says "find": a word for reading.
    Description, as the server wrote it
    Recommend the right free PrintPal browser tool for a task: print cost / resin cost / layer height (magic numbers) / E-steps / flow rate / volumetric flow / filament spool / drying / shrinkage / Vref / Etsy profit calculators; generators for lithophanes, vases, name plates, 3D text, QR codes, bins, puzzles, mold boxes, flexi models, fidget clickers, Desk Pal, terrain maps, Minecraft maps; mesh repair, model splitter, converter, viewer, G-code viewer, AMS/multicolor painters; AI generators. Returns matching tools with links. Pass an empty task to list every tool.

    Annotations the server declares

    • title: Find a PrintPal tool or calculator
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_3d_modelGet full details for one PrintPal model by uid: description, license, file formats, author, stats, and the page URL to download it.No findings

    Why it is in this group

    • The name "get_3d_model" says "get": a word for reading.
    Description, as the server wrote it
    Get full details for one PrintPal model by uid: description, license, file formats, author, stats, and the page URL to download it. Accepts a uid from `search_3d_models` results or a printpal.io/model/<uid> URL.

    Annotations the server declares

    • title: Get 3D model details
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_build_guideRead a full PrintPal build guide by slug: summary, bill of materials with quantities and links, downloadable files (STL/3MF/code), every build step, callouts and code blocks.No findings

    Why it is in this group

    • The name "get_build_guide" says "get": a word for reading.
    Description, as the server wrote it
    Read a full PrintPal build guide by slug: summary, bill of materials with quantities and links, downloadable files (STL/3MF/code), every build step, callouts and code blocks. Use when the user wants to actually follow or adapt a project.

    Annotations the server declares

    • title: Get a build guide (steps, BOM, files)
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_pricing_and_plansExplain what is free on PrintPal, how AI generation credits and the CAD agent are priced, API access and the on-demand 3D printing service — with links to sign up, buy credits or s…No findings

    Why it is in this group

    • The name "get_pricing_and_plans" says "get": a word for reading.
    Description, as the server wrote it
    Explain what is free on PrintPal, how AI generation credits and the CAD agent are priced, API access and the on-demand 3D printing service — with links to sign up, buy credits or subscribe. Call when the user asks about cost, limits, subscriptions or how to get more generations.

    Annotations the server declares

    • title: PrintPal pricing, credits & plans
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • search_3d_modelsFind printable 3D models (STL/3MF/OBJ) in the PrintPal community library by keyword — e.g.No findings

    Why it is in this group

    • The name "search_3d_models" says "search": a word for reading.
    Description, as the server wrote it
    Find printable 3D models (STL/3MF/OBJ) in the PrintPal community library by keyword — e.g. "articulated dragon", "headphone stand", "Raspberry Pi 5 case". Returns cards with thumbnail, author, tags, likes and a link to the model page where the files can be downloaded. Searches existing uploads only; new models are made by `generate_3d_model` (AI mesh) or `design_parametric_cad` (exact dimensions).

    Annotations the server declares

    • title: Search 3D models to print
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • search_build_guidesFind step-by-step PrintPal build guides: Arduino/ESP32 electronics + 3D-printed enclosures, robots, functional prints, printer mods, STEM classroom projects, props and toys.No findings

    Why it is in this group

    • The name "search_build_guides" says "search": a word for reading.
    Description, as the server wrote it
    Find step-by-step PrintPal build guides: Arduino/ESP32 electronics + 3D-printed enclosures, robots, functional prints, printer mods, STEM classroom projects, props and toys. Each result lists difficulty, time, cost, part/file/step counts. Filter by category (electronics-robotics, functional-prints, home-workshop, stem-education, printer-mods, art-props, toys-games) or difficulty (beginner, intermediate, advanced). Leave query empty to browse featured guides.

    Annotations the server declares

    • title: Search build guides & projects
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • search_learning_resourcesSearch PrintPal's how-to content: the vendor-neutral 3D printing wiki (print quality, filaments, slicer settings, maintenance, error codes, safety), OpenSCAD + AI-CAD docs, short v…No findings

    Why it is in this group

    • The name "search_learning_resources" says "search": a word for reading.
    Description, as the server wrote it
    Search PrintPal's how-to content: the vendor-neutral 3D printing wiki (print quality, filaments, slicer settings, maintenance, error codes, safety), OpenSCAD + AI-CAD docs, short video tutorials with transcripts, and free Academy courses with certificates. Use `type` to narrow. Results include ids accepted by `fetch` for the full article text.

    Annotations the server declares

    • title: Search guides, videos & courses
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http printpal https://printpal.io/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__printpal__search",
      "mcp__printpal__fetch",
      "mcp__printpal__search_3d_models",
      "mcp__printpal__get_3d_model",
      "mcp__printpal__find_3d_printing_tool",
      "mcp__printpal__search_build_guides",
      "mcp__printpal__get_build_guide",
      "mcp__printpal__search_learning_resources",
      "mcp__printpal__get_pricing_and_plans"
    ],
    "ask": [
      "mcp__printpal__calculate_print_cost",
      "mcp__printpal__calculate_filament_usage",
      "mcp__printpal__calculate_layer_heights",
      "mcp__printpal__calculate_volumetric_flow",
      "mcp__printpal__generate_3d_model",
      "mcp__printpal__check_3d_generation",
      "mcp__printpal__design_parametric_cad"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as printpal. Review it before you use it.