compatsy 3D printing

Is compatsy 3D printing MCP server safe?

• No hidden instructions were found in its tool descriptions.
• Its error messages showed no secrets or internal details.
• 5 of its 6 tools are labeled read-only; the others may change or send things.
• Overall it scored 88/100 on 29 Oct 2026.

A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

What it can do

6 tools, in the server's own words.

Test results

Safe mode: only tools labeled read-only were run. How the test works

• !
  Ready for the newest MCP version

  1 warning

  • !Uses an older MCP version (2025-11-25). It works today, but it isn't on the July 2026 version (2026-07-28) yet.
  note
• !
  Every tool is described

  4 warnings

  • !search_products: Inputs with no description: query, category, limit
  • !compare: Inputs with no description: product_ids, category, limit
  • !check_stock: Inputs with no description: product_id, merchant_id
  • !report_issue: Inputs with no description: entity_type, entity_id, field, claim
  note
• ✓
  ConnectsConnected in 872 ms
  pass
• ✓
  Lists its toolsFound 6 tools
  pass
• ✓
  Tools are labeled safe or dangerousEvery tool has a safety label
  pass
• ✓
  No hidden instructionsNo hidden instructions found in tool descriptions
  pass
• ✓
  Tools work with good inputs

  All good

  • ✓search_products: Answered with an error, probably because of our sample input: {"error":"invalid_params","message":"give \"query\" or \"category\""}
  • ✓get_product: Answered with an error, probably because of our sample input: {"error":"not_found","message":"no product \"test\""}
  • ✓compare: Answered with an error, probably because of our sample input: {"error":"invalid_params","message":"give \"product_ids\" (2-10) or \"category\""}
  • ✓check_fit: Answered with an error, probably because of our sample input: {"error":"not_found","message":"no product \"test\""}
  • ✓check_stock: Answered with an error, probably because of our sample input: {"error":"not_found","message":"no product \"test\""}
  • –report_issue: Not run: labeled as changing data
  pass
• ✓
  Bad inputs give a clean error

  All good

  • ✓search_products: Refused wrong type for "query" with a clear error
  • ✓get_product: Refused missing required input "product_id" with a clear error
  • ✓get_product: Refused wrong type for "product_id" with a clear error
  • ✓compare: Refused wrong type for "product_ids" with a clear error
  • ✓check_fit: Refused missing required input "subject_id" with a clear error
  • ✓check_fit: Refused wrong type for "subject_id" with a clear error
  • ✓check_stock: Refused missing required input "product_id" with a clear error
  • ✓check_stock: Refused wrong type for "product_id" with a clear error
  pass
• ✓
  Fast enough

  All good

  • ✓Connecting took 872 ms
  • ✓Listing tools took 70 ms
  • ✓Average tool answer: 781 ms
  • ✓get_product: Slowest tool: get_product (1.0 s)
  pass
• ✓
  No secrets leakedChecked 13 error messages: no secrets or internal details
  pass
• ✓
  Follows MCP best practices (not scored yet)Tool names, safety labels and tool list size follow the MCP guide
  pass
• –
  Tools work togetherNo safe tool returned data to start a chain from, so chains were not tested (not counted either way)
  not tested

Test it yourself

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Score over time

• 29 Oct 202688

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use compatsy 3D printing, signed in with GitHub, one per person. Reviews never change the score.