MCP server for the Elegoo Centauri Carbon 3D printer that enables monitoring, control, and notifications via the SDCP 3.0 protocol over the local network.
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blanders2
Source: Glama
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CENTAURI_IPprinter IP; skips discovery (recommended if your printer hasCENTAURI_MCP_HOMEOverride the directory with . It deliberately avoidsPUSHOVER_TOKEN/ PUSHOVER_USER — enables phone notifications from thePUSHOVER_USERPUSHOVER_TOKEN / — enables phone notifications from thePUSHOVER_SOUNDEnvironment equivalents: PUSHOVER_PRIORITY, (the configPUSHOVER_PRIORITYEnvironment equivalents: , PUSHOVER_SOUND (the configTool 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
30/30 tools missing one or more hints — discover_printers (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_attributes (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +27 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.
Destructive tools are labelled
2 tools perform destructive updates without destructiveHint — start_monitor deletes at line 543 (paths.stop_flag().unlink(missing_ok=True)); stop_monitor deletes at line 601 (paths.stop_flag().unlink(missing_ok=True))
Add destructiveHint:true to any tool whose handler calls .delete(), .upsert(), .update(), unlink, rm, DELETE, DROP, REPLACE INTO, or any operation that overwrites existing data.
Descriptions match behaviour
1 tool describes read intent but its handler mutates — get_timelapse (line 231: with open(download_to, "wb") as f:)
Rename the tool, rewrite the description, or move the side-effect into a separate clearly-named tool.
Tool inputs are validated
26/30 tool handlers declare input schemas (87%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool handlers catch errors
Only 3/30 tool handlers wrap calls in try/catch (10%)
Wrap each tool handler body in try/catch and return a structured error response.
Tests exist
No test files found
Add tests that exercise each declared tool.
Tool description accuracy
get_timelapse: description implies read-only but handler writes/deletes/executes; start_monitor: description implies read-only but handler writes/deletes/executes
Update tool descriptions to accurately reflect all capabilities — especially write, delete, or execute operations.
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