DiarioBitcoin

Is DiarioBitcoin MCP server safe?

• None of the hidden-instruction wordings we know 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 100/100 on 1 Nov 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

• ✓
  ConnectsConnected in 190 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
• ✓
  Tools are labeled safe or dangerousEvery tool has a safety label
  pass
• ✓
  No known hidden instructionsNone of the hidden-instruction wordings we know were found in tool descriptions. New wordings can get past this check.
  pass
• ✓
  Tools work with good inputs

  All good

  • ✓get_article: Answered with an error, probably because of our sample input: {"error":{"code":"INVALID_ARGUMENT","message":"pass exactly one of id or slug"}} {"error":{"code":"INVALID_ARGUMENT","message":"pass exactl…
  • ✓get_news: Worked (42 ms)
  • ✓get_usage_guide: Worked (40 ms)
  • ✓list_categories: Worked (40 ms)
  • –get_full_article: Not run: labeled as changing data
  pass
• ✓
  Bad inputs give a clean error

  All good

  • ✓get_article: Refused wrong type for "id" with a clear error
  • ✓get_news: Refused wrong type for "category" with a clear error
  pass
• ✓
  Fast enough

  All good

  • ✓Connecting took 190 ms
  • ✓Listing tools took 39 ms
  • ✓Average tool answer: 45 ms
  • ✓get_article: Slowest tool: get_article (56 ms)
  pass
• ✓
  No secrets leakedChecked 3 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
• ✓
  Resources and prompts work

  All good (1 resource)

  • ✓Opened 1 of 1 resources
  • ✓An address that does not exist gets a clean "not found" error
  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.

Show this score on GitHub

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Score over time

• 1 Nov 2026100

One test so far. New tests will show here.

Reviews

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