Lints a DNS zone file or a provider's CSV record export before it breaks web or mail - CNAME at the apex or next to other records, MX/NS pointing at a CNAME or IP, missing trailing dots, missing or duplicate SPF, +all/?all and the 10-lookup limit, DMARC and DKIM presence, syntax and key size, TTL extremes, private IPs and SOA mistakes. Returns corrected records. Includes an offline stdlib Python linter with --self-test.
Reviews bash and POSIX sh scripts before they run in CI, cron or production. Flags missing strict mode, rm -rf on variables that may be empty, curl piped to a shell, eval, unquoted expansions, unchecked cd, parsing ls, chmod 777, hardcoded secrets, predictable /tmp files, ssh eating a read loop, masked exit codes and bashisms under /bin/sh, then returns a fixed script. Includes a stdlib Python linter with --self-test.
Reviews terraform plan and show -json output before apply. Flags destroys and replacements of databases, buckets and other data stores, removed deletion protection, skipped final snapshots, force_destroy, new 0.0.0.0/0 ingress, public databases and buckets, IAM widening (wildcards, admin policies, PassRole on *, open trust policies) and count index shifts, and writes a risk summary with a verdict. Includes a stdlib Python checker with --self-test.
Reviews nginx.conf and site configs for security problems such as TLS 1.0/1.1, weak ciphers, missing HSTS and security headers, the add_header inheritance trap, alias off-by-slash path traversal, autoindex, unlimited body size, $uri in redirects, HTTP without an HTTPS redirect, open admin paths and logins without rate limits. Gives a fixed config. Includes a stdlib Python checker with --self-test.
Lints .env and .env.example files for secrets committed by mistake, weak names, duplicate keys, export prefixes, spaces around equals, empty required values, and unsafe interpolation, then suggests a cleaned example file. Use when a user asks "is this .env safe to commit?", "why won't dotenv load?", or "diff my .env.example". Includes a tested stdlib Python linter.
