Skills/npm/mcp-3d-printer-server

mcp-3d-printer-server@1.2.58

VERIFIED· not started

Publisher claims: "MCP server for connecting Claude with 3D printer management systems" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher dmontgomery40 · publishing for 709 daysInstalls 15,897Last detonated 7d ago
$claude mcp add mcp-3d-printer-server -- npx -y mcp-3d-printer-server
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Coverage

Not started: dependency install failed; the server itself was not observed.
Tested
the dependency install step · every file read, file written and host contacted by what ran
Not tested
server startup · the tool list · tool behavior

What this means for the label: Verified here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.

Before you give it your token

Code inventory arrives with this version's next honeypot run.
It will ask for
unknown until the next run
Where it talks to
unknown until the next run
What the honeypot saw
no credential files read · no network
What we could not test
server startup · the tool list · tool behavior

Not enough was observed to say yet. Not started: dependency install failed; the server itself was not observed. This version's code has not been inventoried for credentials and hosts either; both arrive with its next honeypot run (popular servers first). `vet-skills try mcp-3d-printer-server` runs it now and prints the full answer.

Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.

Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios; not started: dependency install failed; the server itself was not observed) on 2026-11-07 and scored it 85/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 1 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.8sprocessdependency install exit 1
0.9sprocessexec /usr/bin/date
0.9sprocessexec /usr/bin/timeout
0.9sclaimedno tools/list reply (exit 0)
0.9sprocessscript backend runs setup only
0.9sprocessno install scripts to re-run

Static findings

HIGH
Access to sensitive file pathsdist/index.js:1515 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesdescription: "Counterpart contract (counterpart/1), Bambu: how this server reaches the printer for prints and for Stop/Pause/Resume. route is \"lan\" (the local network through FULU's BambuNetwork briFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/design-app-setup.js:93 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesfunction envFile(system) { return path.resolve(system.cwd, ".env"); }Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/index.js:117 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files// dotenv's own .env lookup is: slicer CLIs receive paths under it, and Bambu Studio failsFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/index.js:105 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files// Load environment variables from .env fileFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/index.js:251 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files// counterpart_print_route changes these at run time (and in the .env file they came from).Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/design-app-setup.js:92 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files/** The server's own `.env`, when it has one: a client's env block has no file to update. */Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/design-app-setup.js:464 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files: "This server has no .env file to add its Fusion settings to: add FUSION_MCP_COMMAND and FUSION_MCP_ARGS to its configuration."] : []),Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/counterpart/setup.js:4 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files* to this server's .env and never needs its own printer or model tables. Pure: no printer traffic, no secrets returned.Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/design-app-setup.js:134 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files/** One change at a time per server: overlapping updates would interleave backups, renames and .env writes. */Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/index.js:1561 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesdescription: "Counterpart contract (counterpart/1): the printers this server drives (each PRINTER_TYPE) and the settings it reads for each, by .env variable name: label, hint, whether required, the fiFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/counterpart/setup.js:99 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesdefault: { type: "boolean", description: "The kind this server runs when a .env sets none of its fixed values (no PRINTER_TYPE)." },Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/design-app-setup.js:358 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files/** A login agent that gives Fusion the add-in's port however Fusion is opened (a GUI app never reads this .env). */Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/tool-annotations.js:28 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filescounterpart_print_route: write(true, true, false), // with route, replaces the saved connection in .envFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathssrc/counterpart/setup.ts:4 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files* to this server's .env and never needs its own printer or model tables. Pure: no printer traffic, no secrets returned.Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathssrc/index.ts:1708 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesdescription: "Counterpart contract (counterpart/1), Bambu: how this server reaches the printer for prints and for Stop/Pause/Resume. route is \"lan\" (the local network through FULU's BambuNetwork briFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
File type combined with upload actiondist/slicer/bambu-cli.js:509 · File type combined with upload action — agent may exfiltrate local data files* The result.json in the run's fresh output directory, parsed verbatim. BambuFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
LOW
Prompt injectionREADME.md:200 · Prompt injection — known jailbreak technique reference · informational: not an instruction file · informational: not an instruction file · informational: not an instruction fileThe optional FULU **BambuNetwork bridge** is a separate runtime. With `BAMBU_DEFAULT_CONNECTION_MODE=bambu_network` (or `connection_mode: "bambu_network"`), `print_3mf`, `cancel_print`, `pause_print` Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST01
HIGH
Access to sensitive file pathssrc/index.ts:143 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files// Load environment variables from .env fileFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathssrc/counterpart/setup.ts:38 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files/** The kind this server runs when a .env sets none of these values (no PRINTER_TYPE). */Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathsdist/tool-annotations.js:61 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files// the Fusion add-in folder, a login item and this server's .env are written. Repeating finds them current.Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
File type combined with upload actionsrc/fusion-mcp-bridge.ts:373 · File type combined with upload action — agent may exfiltrate local data files* <name>.parameters.json into output_dir. Files are staged, verified andFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/index.js:2475 · File type combined with upload action — agent may exfiltrate local data filesdescription: "Export the active Fusion design into output_dir as <name>.stl (export_stl), <name>.f3d (export_f3d) and <name>.parameters.json (the design's user parameters), and return their absolute pFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actionsrc/index.ts:63 · File type combined with upload action — agent may exfiltrate local data files// A result.json that says success can still leave no output: the report says failed all the same.Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
HIGH
Access to sensitive file pathssrc/counterpart/setup.ts:146 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesdefault: { type: "boolean", description: "The kind this server runs when a .env sets none of its fixed values (no PRINTER_TYPE)." },Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
File type combined with upload actiondist/index.js:44 · File type combined with upload action — agent may exfiltrate local data files// A result.json that says success can still leave no output: the report says failed all the same.Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actionsrc/slicer/bambu-cli.ts:619 · File type combined with upload action — agent may exfiltrate local data files* The result.json in the run's fresh output directory, parsed verbatim. BambuFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
HIGH
Access to sensitive file pathssrc/index.ts:309 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files// counterpart_print_route changes these at run time (and in the .env file they came from).Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Access to sensitive file pathssrc/index.ts:1754 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesdescription: "Counterpart contract (counterpart/1): the printers this server drives (each PRINTER_TYPE) and the settings it reads for each, by .env variable name: label, hint, whether required, the fiFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
LOW
Prompt injectionREADME.md:55 · Prompt injection — known jailbreak technique reference · informational: not an instruction file · informational: not an instruction file · informational: not an instruction fileexplain any LAN Only Mode or Developer Mode setting I need to enable.Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST01
HIGH
Access to sensitive file pathssrc/index.ts:157 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files// dotenv's own .env lookup is: slicer CLIs receive paths under it, and Bambu Studio failsFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
File type combined with upload actiondist/fusion-mcp-bridge.js:390 · File type combined with upload action — agent may exfiltrate local data files* <name>.parameters.json into output_dir. Files are staged, verified andFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actionsrc/index.ts:2677 · File type combined with upload action — agent may exfiltrate local data filesdescription: "Export the active Fusion design into output_dir as <name>.stl (export_stl), <name>.f3d (export_f3d) and <name>.parameters.json (the design's user parameters), and return their absolute pFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
LOW
Authorization escalation languageREADME.md:634 · Authorization escalation language · informational: not an instruction file · informational: not an instruction file · informational: not an instruction file- After sending the command, the server watches fresh reports for up to 15 seconds (`BAMBU_DISPATCH_CHECK_MS`) and returns `dispatch: "started"` or `"unconfirmed"`. If the firmware refuses the commandFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
LOW
Authorization escalation languageREADME.md:200 · Authorization escalation language · informational: not an instruction file · informational: not an instruction file · informational: not an instruction fileThe optional FULU **BambuNetwork bridge** is a separate runtime. With `BAMBU_DEFAULT_CONNECTION_MODE=bambu_network` (or `connection_mode: "bambu_network"`), `print_3mf`, `cancel_print`, `pause_print` Fix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
LOW
Prompt injectionREADME.md:634 · Prompt injection — known jailbreak technique reference · informational: not an instruction file · informational: not an instruction file · informational: not an instruction file- After sending the command, the server watches fresh reports for up to 15 seconds (`BAMBU_DISPATCH_CHECK_MS`) and returns `dispatch: "started"` or `"unconfirmed"`. If the firmware refuses the commandFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST01
LOW
Authorization escalation languageREADME.md:55 · Authorization escalation language · informational: not an instruction file · informational: not an instruction file · informational: not an instruction fileexplain any LAN Only Mode or Developer Mode setting I need to enable.Fix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01

Cost to the agent

Instructions loaded
≈58 tok
1 file · 81 in bundle
Tool list per prompt
≈0 tok
0 tools · 0 per tool
Handshake
no reply
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 0

Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.

Known vulnerabilities

No advisories in OSV for mcp-3d-printer-server@1.2.58 as of 7d ago. This is the package itself, not its dependencies.