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MacTech CMMC / NIST 800-171
com.mactechsolutionsllc.www/cmmc in the official MCP registry.
Endpoint https://www.mactechsolutionsllc.com/api/mcp.
The registry describes it as: NIST 800-171 controls and 800-171A objectives, crosswalks, exact SPRS scoring, POA&M generation.
We read its 13 tools on 2026-10-27. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
lookup_control list_controls calculate_sprs_score get_assessment_objectives crosswalk_control determine_cmmc_level list_level1_practices generate_poam_entries check_contract_type_eligibility lookup_clause scope_assessment lookup_rev3_requirement crosswalk_revisions
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[](https://lazaretto.dev/mcp-registry/com-mactechsolutionsllc-www-cmmc)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.