23 October 2026

The PHP interpreter source code

This repo contains the source code of the PHP interpreter, a scripting language for web development. It is licensed under Modified BSD (BSD-3-Clause).

• Building from Git requires autoconf, bison, and re2c; the default build also needs libxml2 and libsqlite3.
• make test runs the test suite in parallel. Limit workers with make TEST_PHP_ARGS=-j4 test.
• New features need an RFC accepted by developers. Bug fixes do not need an RFC.

Claude Cowork plugins for every job function

A set of 11 open source plugins for Claude Cowork, also compatible with Claude Code. Each plugin contains skills, connectors, slash commands, and sub-agents for one job role.

• Available plugins: productivity, sales, customer-support, product-management, marketing, legal, finance, data, enterprise-search, bio-research, cowork-plugin-management.
• Plugins can be customized with a company's own tools, terminology, and processes.
• Once installed, skills activate automatically when relevant. Slash commands such as /sales:call-prep are available right away.

A skill that makes AI agents write minimal code

Ponytail is a single prompt (skills/ponytail/SKILL.md) that makes an agent write only what the task needs. Validation, error handling, security, and accessibility are not cut.

• README benchmark, Claude Code, 39 tasks, 5 runs per task: code -53%, time -41%, cost -26%, tokens -45%.
• Risky logic that has tests: 98% with Ponytail, 68% without Ponytail.
• /ponytail-review and /ponytail-audit check for bugs, security, real load, and missing tests.

Multi-phase security audit skill for coding agents

This skill runs a security audit in six phases using isolated agents. The result is machine-readable findings that are independently verified.

• Six phases: reconnaissance, hunting, candidate validation, structured output, independent record verification, and report.
• Findings are written to findings.json with a status of confirmed, needs_validation, or rejected.
• The skill is the precursor of Cloudflare's vulnerability discovery harness.

Turn a codebase into a queryable knowledge graph

Type /graphify in an AI assistant and the project is mapped into a knowledge graph. Code is parsed locally with the tree-sitter AST, with no LLM and no vector store.

• Three output files: graph.html, GRAPH_REPORT.md, and graph.json.
• Each edge is tagged EXTRACTED (written in the source) or INFERRED (resolved by graphify).
• graphify query, graphify path A B, and graphify explain run against graph.json.

A Postgres-based development platform

Supabase provides a Postgres database, authentication, automatic APIs, functions, file storage, and an AI/vector toolkit. It can be used on the hosted platform, self-hosted, or locally.

• Automatic APIs are available through REST, GraphQL, and Realtime subscriptions.
• Realtime is an Elixir server that sends Postgres changes as JSON over websockets to authorized clients.
• PostgREST turns the database into a REST API. GoTrue handles JWT-based authentication.

A Python framework for building APIs

FastAPI is a web framework for building APIs with Python, based on standard type hints. It is built on Starlette for the web parts and Pydantic for the data parts.

• Follows the OpenAPI and JSON Schema standards, with automatic interactive documentation.
• README example: two routes in a single main.py file, / and /items/{item_id}.
• The README quotes users from Microsoft, Uber, Netflix, and Cisco.

A visual, example-driven guide to Claude Code

A Claude Code learning guide with 10 tutorial modules, Mermaid diagrams, and copy-ready templates. The learning path from beginner to advanced is estimated at 11-13 hours.

• Templates cover slash commands, CLAUDE.md, hook scripts, MCP configuration, subagent definitions, and plugin bundles.
• /self-assessment checks your level, and /lesson-quiz hooks gives a quiz per topic.
• The README has a 15-minute quick start section.

Plain Craft Launcher, a Minecraft launcher

PCL is a Minecraft launcher. This repo holds most of its source code: the UI library, the animation module, the download module, and the Minecraft launch module.

• The code is not updated in real time. Its contents are synced each time PCL releases an update.
• There is a feature voting page in GitHub Discussions, and developers handle the items with the most votes first.
• PCL's help documentation is kept in a separate repo, PCL2Help.