{"type":"post","id":"grim-prompter-open-source-threat-modeling-prompts-for-acb365","slug":"grim-prompter-open-source-threat-modeling-prompts-for-acb365","title":"Grim Prompter: open-source threat modeling prompts for AI coding agents","description":"Grim Prompter is an MIT-licensed prompt and skill library for running threat-modeling work through coding agents such as Claude Code and Codex.","retrieval_nugget":"Grim Prompter is an MIT-licensed prompt and skill library for running threat-modeling work through coding agents such as Claude Code and Codex. It matters because it turns a vague request for an agent security review into a staged, evidence-oriented process with explicit scope, artifacts, and permission boundaries.","published_at":"2026-10-29","updated_at":"2026-10-29","record_date":"2026-10-29","date_kind":"published_at","topics":["coding-agents","claude","claude-code"],"entities":["Grim Prompter","Claude Code","Codex CLI","Jim Manico","Model Context Protocol","STRIDE"],"related_patterns":["skills-become-portable-capability-layer","agent-security-moves-to-runtime-boundaries","verification-bandwidth-is-the-scarce-resource"],"novelty_label":"new_fact","what_changed":"Grim Prompter adds a distinct open-source threat-modeling tool for coding agents, covering 36 architectures and 29 methods; the prior covered Cloudflare’s threat-intelligence skills.","prior_refs":["memory:b9db79af-8eaf-8142-a88c-f518851ce58c"],"source_url":"https://github.com/jmanico/grim-prompter","source_urls":["https://github.com/jmanico/grim-prompter"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:grim-prompter-open-source-threat-modeling-prompts-for-acb365","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/grim-prompter-open-source-threat-modeling-prompts-for-acb365/","markdown":"https://newruntime.com/posts/grim-prompter-open-source-threat-modeling-prompts-for-acb365.md","json":"https://newruntime.com/posts/grim-prompter-open-source-threat-modeling-prompts-for-acb365.json"},"next_reads":[{"type":"topic","path":"/topics/coding-agents/","url":"https://newruntime.com/topics/coding-agents/","title":"Coding Agents","reason":"Explore the coding-agents topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/coding-agents.md","json_url":"https://newruntime.com/topics/coding-agents.json"},{"type":"topic","path":"/topics/claude/","url":"https://newruntime.com/topics/claude/","title":"Claude","reason":"Explore the claude topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/claude.md","json_url":"https://newruntime.com/topics/claude.json"},{"type":"topic","path":"/topics/claude-code/","url":"https://newruntime.com/topics/claude-code/","title":"Claude Code","reason":"Explore the claude-code topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/claude-code.md","json_url":"https://newruntime.com/topics/claude-code.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}