BLS OEWS

Is BLS OEWS 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 93/100 on 28 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

• !
  Every tool is described

  4 warnings

  • !compare_metros: Inputs with no description: datatype, metro_codes, occ_code, year
  • !compare_occupations: Inputs with no description: area_code, datatype, occ_codes, scope, year
  • !get_wage_data: Inputs with no description: area_code, datatypes, industry, occ_code, scope, year
  • !igce_wage_benchmark: Inputs with no description: area_code, burden_high, burden_low, occ_code, scope, year
  note
• ✓
  ConnectsConnected in 217 ms
  pass
• ✓
  Ready for the newest MCP versionUses the latest MCP version (2026-07-28)
  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

  • ✓compare_metros: Answered with an error, probably because of our sample input: Error executing tool compare_metros: occ_code='test' must be a SOC code like '15-1252' or '151252' (6 ASCII digits, optional single dash af…
  • ✓compare_occupations: Answered with an error, probably because of our sample input: Error executing tool compare_occupations: occ_codes list cannot be empty.
  • ✓detect_latest_year: Worked (224 ms)
  • ✓get_data_status: Worked (77 ms)
  • ✓get_wage_data: Answered with an error, probably because of our sample input: Error executing tool get_wage_data: occ_code='test' must be a SOC code like '15-1252' or '151252' (6 ASCII digits, optional single dash aft…
  • ✓igce_wage_benchmark: Answered with an error, probably because of our sample input: Error executing tool igce_wage_benchmark: occ_code='test' must be a SOC code like '15-1252' or '151252' (6 ASCII digits, optional single da…
  • ✓list_common_metros: Worked (80 ms)
  • ✓list_common_soc_codes: Worked (78 ms)
  pass
• ✓
  Bad inputs give a clean error

  All good

  • ✓compare_metros: Refused missing required input "occ_code" with a clear error
  • ✓compare_metros: Refused wrong type for "metro_codes" with a clear error
  • ✓compare_occupations: Refused missing required input "occ_codes" with a clear error
  • ✓compare_occupations: Refused wrong type for "occ_codes" with a clear error
  • ✓get_wage_data: Refused missing required input "occ_code" with a clear error
  • ✓get_wage_data: Refused wrong type for "scope" with a clear error
  • ✓igce_wage_benchmark: Refused missing required input "occ_code" with a clear error
  • ✓igce_wage_benchmark: Refused wrong type for "burden_high" with a clear error
  pass
• ✓
  Fast enough

  All good

  • ✓Connecting took 217 ms
  • ✓Listing tools took 69 ms
  • ✓Average tool answer: 85 ms
  • ✓detect_latest_year: Slowest tool: detect_latest_year (224 ms)
  pass
• ✓
  No secrets leakedChecked 12 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 tool's answer could be fed into another tool, so there were no chains to test (not counted either way)
  not tested

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Score over time

• 28 Oct 202693

One test so far. New tests will show here.

Reviews

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