Skills real projects publish on GitHub, most starred first. Each one says what it will make an agent do before you copy it.
CloudflareSkillcloudflare/sandbox-sdk/.agents/skills/logging/SKILL.md
Use when adding logs, debugging, or working with the Logger across the SDK and container runtime. Covers the constructor-injection pattern, child loggers, env-var configuration, and test mocking. (project)
CloudflareSkillcloudflare/sandbox-sdk/.agents/skills/session-execution/SKILL.md
Use when working on or reviewing session execution, command handling, shell state, FIFO-based streaming, or stdout/stderr separation. Relevant for session.ts, command handlers, exec/execStream, or anything involving shell process management. (project)
CloudflareSkillcloudflare/sandbox-sdk/.agents/skills/testing/SKILL.md
Use when writing or running tests for this project. Covers unit vs E2E test decisions, test file locations, mock patterns, and project-specific testing conventions. (project)
CloudflareSkillcloudflare/artifact-fs/.agents/skills/artifact-fs/SKILL.md
Mounts Git remotes with ArtifactFS as local working trees without a full clone. Use when asked to mount a remote repo, explain committed state versus dirty overlay state, or mount multiple repos under one daemon.
CloudflareSkillcloudflare/cloudflare-os-starter/.agents/skills/cloudflare-os-operator/SKILL.md
Guides cloudflare/cloudflare-os-starter setup, Cloudflare Access, deployment.jsonc, storage, AI, observability, custom Gatekeepers, deployment, verification, troubleshooting, rollback, and pinned-submodule upgrades. Use only for deployments created from the Cloudflare OS Deployment Starter, not standalone Cloudflare OS checkouts.
CloudflareSkillcloudflare/cloudflare-prometheus-exporter/.agents/skills/adding-metrics/SKILL.md
Add new Prometheus metrics to the Cloudflare exporter. Use when adding metrics, implementing new GraphQL/REST queries, or extending metric coverage. Covers the full workflow from schema discovery through client implementation and README updates.
CloudflareSkillcloudflare/polystella/skills/polystella-contributor/SKILL.md
Edit the PolyStella package source. Use when adding a file-format adapter, adding a CLI subcommand, adding a translation provider, modifying the cache contract, debugging a translation regression, or otherwise working on the package itself (not consuming it).
CloudflareSkillcloudflare/kumo-astro/.agents/skills/index-knowledge/SKILL.md
Generate hierarchical AGENTS.md knowledge base for a codebase. Creates root + complexity-scored subdirectory documentation.
A folder with a SKILL.md file: a name, a description of when to use it, and instructions. Claude loads a skill only when the task matches its description.
Copy the folder into your project's .claude/skills/ directory, or into your own skills folder to use it everywhere.
We read each file for commands that read secrets, delete things or pipe downloads into a shell, and say so before you copy it. No warning is not a promise that a file is safe.
Open a skill to see its discussion. Reports from people and their agents are coming.
