bambu-printer-mcp
MCP server for Bambu Lab 3D printers — STL manipulation, BambuStudio slicing, and direct printer control
Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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DMontgomery40
Source: Glama · also listed on github_topic
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Install from
The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
BAMBU_CLIENT_CERTBAMBU_CLIENT_KEYBAMBU_CLI_FLATTENBambuStudio CLI auto-flatten (=true) — works around upstream profile inheritance bugs.BAMBU_DEV_IDBAMBU_MODELp1s # Your printer model: p1s, p1p, p2s, x1c, x1e, a1, a1mini, h2d, h2s, h2cBAMBU_NETWORK_BRIDGE_COMMANDBAMBU_NETWORK_CONFIG_DIRBAMBU_NETWORK_COUNTRY_CODEBAMBU_NETWORK_PLUGIN_DIRBAMBU_NETWORK_USER_INFOBAMBU_PRINTER_ACCESS_TOKENBAMBU_PRINTER_HOST / BAMBU_PRINTER_SERIAL /BAMBU_PRINTER_HOST/ BAMBU_PRINTER_SERIAL / BAMBU_PRINTER_ACCESS_TOKENBAMBU_PRINTER_MODELAlias also accepted:BAMBU_PRINTER_SERIALBAMBU_PRINTER_HOST / / BAMBU_PRINTER_ACCESS_TOKENBAMBU_PROFILES_ROOTderived from SLICER_PATH No Override path to the BambuStudio Resources/profiles directory used by the CLI flattener. Useful for non-standard installs or dev environments.BAMBU_SERIAL01P00A123456789 # Printer serial number (see Finding Your Serial Number below)BAMBU_SLICER_PROFILEBAMBU_SLICER_PROFILE_DIRSBAMBU_STUDIO_PATHAlias also accepted:BAMBU_TEMPLATE_3MF_PATHBAMBU_TEMPLATE_DIRList saved templates from the local registry directory. You can override the registry root with .BAMBU_TOKENyour_access_token # LAN access token from printer touchscreenBED_TYPEtextured_plate # Bed plate type: textured_plate, cool_plate, engineering_plate, hot_plate, supertack_plateBLENDER_MCP_BRIDGE_COMMANDShell command to invoke your Blender MCP bridge executableComSpecFFMPEG_PATHFULU_BAMBU_NETWORK_BRIDGE_COMMANDMCP_ALLOW_BRIDGE_COMMAND_ARGMCP_ALLOW_EXECUTABLE_ARGslicer_path and slicer_profile fall back to the SLICER_PATH and SLICER_PROFILE environment variables when omitted. Per-call slicer_path overrides require =1.MCP_HTTP_ALLOWED_ORIGINSNo Comma-separated list of allowed CORS originsMCP_HTTP_HOST127.0.0.1 No HTTP bind address (HTTP transport only)MCP_HTTP_JSON_RESPONSEtrue No Return structured JSON alongside text responsesMCP_HTTP_PATH/mcp No HTTP endpoint path (HTTP transport only)MCP_HTTP_PORT3000 No HTTP port (HTTP transport only)MCP_HTTP_STATEFULtrue No Enable stateful HTTP sessionsMCP_TRANSPORTstdio # Options: stdio (default), streamable-httpNOZZLE_DIAMETER0.4 # Nozzle diameter in mm (default: 0.4)PJARCZAK_BAMBU_BRIDGE_COMMANDPJARCZAK_BAMBU_COUNTRY_CODEPJARCZAK_BAMBU_PLUGIN_DIRPJARCZAK_BAMBU_PROBE_LOG_DIRPJARCZAK_EXPECTED_BAMBU_NETWORK_VERSIONPJARCZAK_MAC_RUNTIME_DIRPRINTER_HOST192.168.1.100 # IP address of your Bambu printer on the local networkSLICER_PATH/Applications/BambuStudio.app/Contents/MacOS/BambuStudioSLICER_PROFILEOptional: path to a slicer profile/config fileSLICER_TYPEbambustudio # Options: bambustudio, prusaslicer, orcaslicer, cura, slic3rTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
41/41 tools missing one or more hints — get_printer_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_printer_filaments (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); resolve_3mf_ams_slots (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +38 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool test coverage
29/41 tools referenced in tests (71%)
Write tests that reference each tool by name so every tool has at least one test.
Shell command execution
6 child_process/subprocess calls in production code — runs shell commands (src/bambu-network-bridge.ts:394, src/stl/stl-manipulator.ts:696, src/stl/stl-manipulator.ts:706)
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Secrets not logged
21 secret values sent to console.log
Redact or omit secret values from log output.
No arbitrary install scripts
Has postinstall/preinstall script — runs arbitrary code on npm install
Remove postinstall/preinstall hooks unless they’re essential.
Dependency freshness
2/10 production deps stale: xml2js@2024-05-31 (2.2y), bambu-node@2024-08-19 (2y)
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