Bastion Helix Agent Lens

Is Bastion Helix Agent Lens MCP server safe?

• No hidden instructions were found in its tool descriptions.
• Its error messages showed no secrets or internal details.
• All 8 of its tools are labeled read-only.
• Overall it scored 89/100 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

8 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

  5 warnings

  • !read: Inputs with no description: url, engine, max_chars, user_agent
  • !actions: Inputs with no description: url, engine, user_agent
  • !extract: Inputs with no description: url, engine, user_agent
  • !delta: Inputs with no description: url, engine, user_agent
  • !screenshot: Inputs with no description: url, engine, full_page, user_agent
  note
• !
  Follows MCP best practices (not scored yet)

  2 tips (not scored)

  • !Very common tool name: read. Next to other servers' tools the AI may mix them up; a short prefix helps (like "github_search" instead of "search").
  • !2 tools answer with structured data but don't declare its shape (outputSchema): preflight, site. If those answers change shape, nothing can catch it; with a schema, every answer is checked.
  note
• ✓
  ConnectsConnected in 166 ms
  pass
• ✓
  Lists its toolsFound 8 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

  • ✓preflight: Worked (43 ms)
  • ✓read: Answered with an error, probably because of our sample input: An API key is required (Authorization: Bearer bhk_…). Buy credits at https://bastionhelix.com/lens#pricing.
  • ✓actions: Answered with an error, probably because of our sample input: An API key is required (Authorization: Bearer bhk_…). Buy credits at https://bastionhelix.com/lens#pricing.
  • ✓delta: Answered with an error, probably because of our sample input: An API key is required (Authorization: Bearer bhk_…). Buy credits at https://bastionhelix.com/lens#pricing.
  • ✓site: Worked (44 ms)
  • ✓screenshot: Answered with an error, probably because of our sample input: An API key is required (Authorization: Bearer bhk_…). Buy credits at https://bastionhelix.com/lens#pricing.
  • ✓credits: Answered with an error, probably because of our sample input: No API key was sent. Add the header Authorization: Bearer bhk_… to your MCP connection.
  • –extract: Not run: labeled read-only, but its description says "publishes", which usually means it changes something. Skipped to be safe: if it only reads, a clearer description helps AI apps too, or test again with --owner
  pass
• ✓
  Bad inputs give a clean error

  All good

  • ✓preflight: Refused missing required input "url" with a clear error
  • ✓preflight: Refused wrong type for "url" with a clear error
  • ✓read: Refused missing required input "url" with a clear error
  • ✓read: Refused wrong type for "url" with a clear error
  • ✓actions: Refused missing required input "url" with a clear error
  • ✓actions: Refused wrong type for "url" with a clear error
  • ✓delta: Refused missing required input "url" with a clear error
  • ✓delta: Refused wrong type for "url" with a clear error
  • and 4 more
  pass
• ✓
  Tools work together

  2 chains working

  • ✓preflight → site: site found what preflight returned (url = "https://example.com")
  • ✓site → preflight: preflight found what site returned (url = "https://example.com")
  pass
• ✓
  Fast enough

  All good

  • ✓Connecting took 166 ms
  • ✓Listing tools took 28 ms
  • ✓Average tool answer: 31 ms
  • ✓site: Slowest tool: site (44 ms)
  pass
• ✓
  No secrets leakedChecked 31 error messages: no secrets or internal details
  pass

Test it yourself

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Score over time

• 29 Oct 202689

One test so far. New tests will show here.

Reviews

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