agent

Insecure-deserialization playbook — fingerprint the language/format (Java serialized, .NET BinaryFormatter, Python pickle, PHP unserialize, Node serialize, YAML/JSON-with-types), then build a working gadget chain with ysoserial / ysoserial.net / phpggc / custom pickle. Use when you see serialized blobs (rO0/AC ED, base64 ViewState, PHP O:) or a parameter/cookie that deserializes user input.

GraphQL pentest playbook — find the endpoint, dump the schema (introspection or field-suggestion fallback), then test for authorization gaps, query batching, alias overload, depth-based DoS, and SQLi/NoSQLi in resolver arguments. Use when the target exposes a /graphql endpoint, GraphiQL, Apollo, or accepts GraphQL queries.

JWT attack playbook — algorithm confusion (alg=none, HS/RS confusion), kid path traversal/SQLi, jku/x5u SSRF, weak HS256 cracking, and embedded JWK trickery. Use when the target uses JWTs for auth (header.payload.signature).

Race condition / TOCTOU playbook — limit overrun (one-time codes used twice, gift cards spent twice), single-packet attack (last-byte sync) to force parallel processing, and state-confusion races (file upload + read, order before payment). Use when timing-sensitive logic could be abused — one-time codes, coupons/gift cards, balance or limit checks, double-spend.

External recon playbook for a web target — subdomain enumeration, live-host probing, tech fingerprinting, and a first pass at content discovery. Use when the user gives you a root domain or apex and wants attack surface mapping.

Deep-dive SSRF testing — bypass filters, hit cloud metadata, chain to RCE/credential disclosure. Use when a target parameter clearly accepts a URL or hostname.

Server-Side Template Injection — fingerprint the engine first (Jinja2 / Twig / Velocity / Freemarker / ERB / Smarty / Mako / Handlebars / Pug), then escalate the engine-specific primitive to RCE or sandbox escape. Use when user input is reflected through a template engine (Jinja2/Twig/Velocity/Freemarker/ERB/Smarty/Mako/Handlebars/Pug) or {{7*7}} evaluates to 49.

Supabase / PostgREST Row-Level-Security playbook — pull the anon (or leaked service_role) key out of the frontend JS, map tables from the auto-generated OpenAPI spec, test anonymous RLS READ disclosures (PII/secret leaks), and anonymous RLS WRITE abuse (insert/update/delete — e.g. forging "certificate"/verification/entitlement rows the app trusts). Use when the target's frontend talks to *.supabase.co, ships an anon JWT, or you see /rest/v1/, /auth/v1/, /storage/v1/ requests.

Subdomain takeover playbook — sweep subdomains for dangling CNAMEs / NS records pointing at unclaimed third-party resources (GitHub Pages, S3, Heroku, Azure, Netlify, Shopify, ...), confirm with the engine's HTTP fingerprint, then prove impact by claiming the resource in scope. Use when enumerating subdomains for dangling CNAME/NS records pointing at unclaimed third-party services.

Web vulnerability hunting playbook. Use after recon, when you have specific hosts/endpoints to test for IDOR/BAC, injection, auth flaws, SSRF, and known CVEs. Emphasizes real PoC + concrete impact.

One line on what this playbook does, then a "Use when ..." clause so the agent knows when to load it (e.g. "Use when the target exposes X / you see Y in requests"). Max 1024 chars. This description is the ONLY thing the model sees until it loads the skill — make the trigger conditions explicit, since there is no separate `triggers` list.