S.I.R.T. generates stack-specific, MITRE ATT&CK-tagged incident response checklists for L1 SOC analysts. Select your incident type. Upload your org's security stack. Get a phase-structured checklist with tool-specific steps in under 60 seconds. 22 incident types. 60+ tools. 6 IR phases. Two paths: bring your own API key, or use the free Claude Skill Bundle; no API key needed. Free. No account. No data retention. AGPL-3.0.