Kiln MCP server

Read from the package source without running it. The installed server may list more.

• add_assembly_interface

  Add a mating interface between two parts in an assembly.

• add_assembly_part

  Add a part to an existing assembly.

• analyze_design_requirements

  Analyze a functional requirement and return technical recommendations.

• analyze_scad_code

  Analyze the structure of OpenSCAD code.

• analyze_structural_risks

  Analyze an STL mesh for structural weak points.

• analyze_warping_risk

  Analyze warping risk for a 3D model based on geometry and material.

• apply_decoration

  Apply a saved decoration to a new model — proven settings, one call.

• apply_design_reinforcements

  Analyze a mesh for structural risks, then auto-apply fixes.

• arrange_parts_on_plate

  Pack multiple STL files onto a virtual build plate.

• assess_load_bearing

  Analyze load-bearing characteristics of a mesh from its geometry.

• audit_original_designwrite action

  Run a ruthless audit of an original design before printing.

• auto_arrange_parts_on_plate

  Calculate non-overlapping XY positions for multiple parts on a print plate.

• auto_color_by_height

  Split a 3D model into horizontal color zones by Z-height.

• auto_color_by_region

  Split a 3D model into color zones by geometric region.

• build_generation_prompt

  Build a design-aware generation prompt for original 3D creation.

• build_parametric_prompt

  Build a prompt optimized for parametric OpenSCAD code generation.

• cache_design

  Cache a 3D design file for faster access and version tracking.

• cache_design_with_source

  Cache a design file alongside its parametric source code.

• cache_model

  Add a 3D model file to the local cache for reuse across jobs.

• check_assembly_clearances

  Check clearances between all mating parts in an assembly.

• check_material_environment

  Check whether a material is compatible with an environment.

• check_multi_material_pairing

  Check if two materials can be co-printed in dual extrusion.

• check_print_readiness

  Single-call print readiness check with optional auto-repair.

• check_printer_material_compatibility

  Check if a specific printer can handle a material.

• cloud_sync_configure

  Configure and start cloud sync.

• cloud_sync_now

  Trigger an immediate cloud sync cycle.

• cloud_sync_status

  Get the current cloud sync status.

• compile_scad

  Compile OpenSCAD code into an STL file.

• compose_assembly_parts

  Compose all assembly parts into a single output STL file.

• consumer_onboarding

  Get the guided onboarding workflow for users without a 3D printer.

• create_assemblywrite action

  Create a new empty assembly.

• decoration_info

  Get full details about a saved decoration.

• decoration_quota_status

  Check your decoration quota — how many decorations you've used this month.

• delete_cached_modelwrite action

  Remove a model from the local cache (file and metadata).

• design_advisor

  Ask which generation method to use for a design idea (triage tool — call FIRST).

• design_improvement_plan

  Generate a complete structural improvement plan for a design.

• donate_info

  Get crypto wallet addresses to tip/donate to the Kiln project.

• encryption_status

  Check G-code encryption status and configuration.

• estimate_price

  Get an instant price estimate before requesting a full quote.

• estimate_print_cost_from_mesh

  Estimate total print cost from a 3D model file.

• estimate_structural_load

  Estimate safe structural load for a cantilevered section.

• estimate_support_material

  Estimate support material needed for a mesh.

• estimate_timeline

  Estimate order-to-delivery timeline with per-stage breakdown.

• export_audit_trail

  Export the safety audit trail as JSON or CSV.

• find_design_templates

  Find public design-template summaries for a use case.

• get_cached_design

  Retrieve a cached design by ID.

• get_cached_model

  Return details for a specific cached model.

• get_design_source

  Retrieve the parametric source code for a cached design.

• get_design_template_info

  Get one template's public discovery and safety-floor fields.

• get_event_handlers

  Return event type → handler mappings to subscribe.

• get_joint_recommendation

  Get recommended clearance settings for a joint type and material pairing.

• get_material_design_profile

  Compatibility lookup for a material's public design floor.

• get_post_processing_guidewrite action

  Get bounded public post-processing help for one goal.

• get_print_diagnostic

  Get a comprehensive print diagnostic combining multiple knowledge sources.

• infer_print_settings

  Infer optimal slicer settings from structural analysis.

• insert_into_scadwrite action

  Insert code into an OpenSCAD module without replacing it.

• iterate_design

  Automated design iteration: generate -> validate -> improve -> regenerate.

• kiln_signin

  Start a Kiln sign-in via OAuth.

• kiln_signin_poll

  Check whether a sign-in started by ``kiln_signin`` is done.

• kiln_viewer_payload

  Internal support for Kiln's inline 3D viewer.

• list_cached_designs

  List cached designs, optionally filtered by material.

• list_cached_models

  List all models in the local cache, newest first.

• list_credentials

  List all stored credentials (metadata only, no plaintext).

• list_decorations

  List all saved decorations in the library.

• list_design_components

  List available pre-built OpenSCAD components from bundled libraries.

• list_design_materials

  List public material identifiers and safety/process summaries.

• list_design_templates_catalog

  List public design-template discovery summaries.

• lock_safety_profile

  Lock a safety profile so agents cannot modify its limits.

• manage_team_member

  Add, remove, or update a team member.

• match_design_components

  Find pre-built library components matching a design description.

• match_design_requirements

  Identify which functional requirements apply to a design task.

• modify_scad_module

  Replace a module in OpenSCAD code with new implementation.

• optimize_print_orientation

  Auto-rotate a mesh to minimize overhangs and maximize bed contact.

• optimize_template_params

  Find the structurally strongest version of a parametric template.

• parse_scad_parameters

  Parse parameter variables from OpenSCAD code.

• printer_usage_summary

  Show printer count, included allowance, and overage charges.

• rebuild_design

  Re-execute the full build pipeline from a saved design recipe.

• recommend_design_material

  Recommend material for engineering/functional parts (strength, heat, environment).

• recommend_design_reinforcements

  Recommend specific reinforcements for an STL mesh.

• resolve_filament_profile

  Resolve a material name or brand ID to a unified filament profile.

• retrieve_credential

  Decrypt and return a stored credential.

• save_decoration

  Save a proven decoration to the library for reuse on future models.

• search_cached_models

  Search the local model cache by name, source, tags, or prompt text.

• solve_template_constraints

  Solve parametric constraints to find valid template parameters.

• stage_smoke_test

  Open a small test cube on Kiln's 3D stage.

• store_credential

  Encrypt and store a credential (API key, webhook secret, etc.).

• suggest_material_for_orderwrite action

  Suggest a material when ordering a print from a fulfillment provider.

• supported_shipping_countries

  List all countries supported for fulfillment shipping.

• tax_estimate
• tax_jurisdiction_lookup

  Look up tax details for a specific region (rate, type, B2B exemptions).

• tax_jurisdictions

  List all 22 supported regions so the agent can match the user's location.

• troubleshoot_print_issue

  Diagnose a 3D printing problem by material and symptom.

• tweak_and_compile_scadwrite action

  Update a parameter in OpenSCAD code and recompile to STL.

• unlock_safety_profile

  Unlock a previously locked safety profile.

• update_scad_parameterwrite action

  Update a parameter value in OpenSCAD code.

• uptime_report

  Get rolling uptime statistics and SLA status.

• validate_assembly

  Validate an assembly for correctness and printability.

• validate_design_for_requirements

  Validate a 3D model against functional design requirements.

• validate_scad_parameters

  Validate OpenSCAD parameters against material design limits.

• validate_shipping_address

  Validate and normalize a shipping address for fulfillment orders.

• Code scan290 source files scanned20/25
• –Live reliabilityno gateway calls yet and no remote to proben/a
• –Tool poisoningtools not inspected (local package is not executed); not countedn/a
• Auth qualitystatic API keys via environment variables6/15
• Maintenancelast push 0 days ago15/15
• Maintainer identityregistry namespace matches repository owner6/10

Kiln: common questions

Is Kiln MCP server safe?

Mostly: it is graded B (72/100). Read the Kiln safety report

How do I install Kiln?

It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.

Does Kiln need an API key?

Yes. The registry entry asks for KILN_PRINTER_API_KEY.

Is Kiln maintained?

The last commit was in the last day (2026-09-22). The latest release is v1.4.1.

What can I use instead of Kiln?

Servers from other publishers that do the same job: Routebase MCP server, KiCad MCP Pro MCP server and Codesign MCP server. Compare all Kiln alternatives.