> browse/registry

> maps-geolocation

Build location-based features with mapping APIs. Use when a user asks to integrate Google Maps, Mapbox, or Leaflet, implement geocoding and reverse geocoding, calculate routes and distances, build store locators, add interactive maps to web apps, implement geofencing, work with GeoJSON, build delivery tracking systems, optimize routes for fleets, display heatmaps, implement address autocomplete, or build any location-aware application. Covers Google Maps Platform, Mapbox, Leaflet, and OpenStreet

> atuin

You are an expert in Atuin, the Rust-based shell history tool that replaces your shell's built-in history with a searchable, syncable, context-aware database. You help developers set up fuzzy search across shell history, sync history across machines, filter by directory/host/session, and analyze command usage — turning shell history from a flat text file into a powerful productivity tool.

> leaflet

Build interactive maps with Leaflet.js. Use when a user asks to create map-based applications, add markers and popups, draw shapes, handle geolocation, or integrate tile layers in web applications.

> search-engine-setup

Set up and optimize search engines for applications. Use when someone asks to "add search to my app", "set up Elasticsearch", "configure Algolia", "fix search relevance", "add autocomplete", "fuzzy search", or "faceted filtering". Covers index design, data sync, search API, autocomplete, relevance tuning, and query analysis.

> debug-buttercup

Debugs the Buttercup CRS (Cyber Reasoning System) running on Kubernetes. Use when diagnosing pod crashes, restart loops, Redis failures, resource pressure, disk saturation, DinD issues, or any service misbehavior in the crs namespace. Covers triage, log analysis, queue inspection, and common failure patterns for: redis, fuzzer-bot, coverage-bot, seed-gen, patcher, build-bot, scheduler, task-server, task-downloader, program-model, litellm, dind, tracer-bot, merger-bot, competition-api, pov-reprod

> nemo-curator

GPU-accelerated data curation for LLM training. Supports text/image/video/audio. Features fuzzy deduplication (16× faster), quality filtering (30+ heuristics), semantic deduplication, PII redaction, NSFW detection. Scales across GPUs with RAPIDS. Use for preparing high-quality training datasets, cleaning web data, or deduplicating large corpora.

> API Fuzzing for Bug Bounty

This skill should be used when the user asks to "test API security", "fuzz APIs", "find IDOR vulnerabilities", "test REST API", "test GraphQL", "API penetration testing", "bug bounty API testing", or needs guidance on API security assessment techniques.

> ossfuzz

OSS-Fuzz provides free continuous fuzzing for open source projects. Use when setting up continuous fuzzing infrastructure or enrolling projects.

> libfuzzer

Coverage-guided fuzzer built into LLVM for C/C++ projects. Use for fuzzing C/C++ code that can be compiled with Clang.

> libafl

LibAFL is a modular fuzzing library for building custom fuzzers. Use for advanced fuzzing needs, custom mutators, or non-standard fuzzing targets.

> fuzzing-obstacles

Techniques for patching code to overcome fuzzing obstacles. Use when checksums, global state, or other barriers block fuzzer progress.

> fuzzing-dictionary

Fuzzing dictionaries guide fuzzers with domain-specific tokens. Use when fuzzing parsers, protocols, or format-specific code.

> coverage-analysis

Coverage analysis measures code exercised during fuzzing. Use when assessing harness effectiveness or identifying fuzzing blockers.

> cargo-fuzz

cargo-fuzz is the de facto fuzzing tool for Rust projects using Cargo. Use for fuzzing Rust code with libFuzzer backend.

> atheris

Atheris is a coverage-guided Python fuzzer based on libFuzzer. Use for fuzzing pure Python code and Python C extensions.

> harness-writing

Techniques for writing effective fuzzing harnesses across languages. Use when creating new fuzz targets or improving existing harness code.

> ruzzy

Ruzzy is a coverage-guided Ruby fuzzer by Trail of Bits. Use for fuzzing pure Ruby code and Ruby C extensions.

> aflpp

AFL++ is a fork of AFL with better fuzzing performance and advanced features. Use for multi-core fuzzing of C/C++ projects.

> address-sanitizer

AddressSanitizer detects memory errors during fuzzing. Use when fuzzing C/C++ code to find buffer overflows and use-after-free bugs.

> secure-workflow-guide

Guides through Trail of Bits' 5-step secure development workflow. Runs Slither scans, checks special features (upgradeability/ERC conformance/token integration), generates visual security diagrams, helps document security properties for fuzzing/verification, and reviews manual security areas.