Photo Mosaic & AI Collage Maker - Collager.ai

Is Photo Mosaic & AI Collage Maker - Collager.ai MCP server safe?

• No hidden instructions were found in its tool descriptions.
• Its error messages showed no secrets or internal details.
• 4 of its 5 tools are labeled read-only; the others may change or send things.
• Overall it scored 95/100 on 21 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

5 tools, in the server's own words.

Test results

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

• !
  Tools are labeled safe or dangerous

  1 warning

  • !start_photo_mosaic: Labeled read-only, but its name starts with "start" and its description says "uploads". Worth double-checking the label, since AI apps trust it.
  note
• ✓
  ConnectsConnected in 41 ms
  pass
• ✓
  Ready for the newest MCP versionUses the latest MCP version (2026-07-28)
  pass
• ✓
  Lists its toolsFound 5 tools
  pass
• ✓
  Every tool is describedAll 5 tools and their inputs are described
  pass
• ✓
  No hidden instructionsNo hidden instructions found in tool descriptions
  pass
• ✓
  Tools work with good inputs

  All good

  • ✓get_shape_collage: Answered with an error, probably because of our sample input: No collage with this id (it may have expired after 30 days). {"id":"test","status":"not_found"} {"id":"test","status":"not_found"}
  • ✓list_collage_shapes: Worked (14 ms)
  • ✓list_mosaic_styles: Worked (9 ms)
  • –make_shape_collage: Not run: labeled as changing data
  • –start_photo_mosaic: Not run: labeled read-only, but its name starts with "start", which usually means it changes something. Skipped to be safe: if it only reads, a clearer name helps AI apps too, or test again with --owner
  pass
• ✓
  Bad inputs give a clean error

  All good

  • ✓get_shape_collage: Refused missing required input "id" with a clear error
  • ✓get_shape_collage: Refused wrong type for "id" with a clear error
  pass
• ✓
  Fast enough

  All good

  • ✓Connecting took 41 ms
  • ✓Listing tools took 11 ms
  • ✓Average tool answer: 17 ms
  • ✓get_shape_collage: Slowest tool: get_shape_collage (27 ms)
  pass
• ✓
  No secrets leakedChecked 5 error messages: no secrets or internal details
  pass
• –
  Tools work togetherNo tool's answer could be fed into another tool, so there were no chains to test (not counted either way)
  not tested

Test it yourself

Free and open source. Same checks, same score.

Score over time

• 16 Oct 202695
• 17 Oct 202695
• 18 Oct 202695
• 21 Oct 202695

Reviews

Coming soon: reviews from people who use Photo Mosaic & AI Collage Maker - Collager.ai, signed in with GitHub, one per person. Reviews never change the score.