Provenance

Sources behind the Index

The Index combines first-party documentation, practitioner material, and measurable adoption signals. Every source card states its purpose and the main signal it contributes.

Discovery Directories

Product Hunt — AI Software

Good for spotting new products; requires independent validation because launch popularity can be noisy.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Product Hunt — AI Infrastructure

More relevant than generic AI launch feeds for production tooling and infrastructure.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Future Tools

Useful human-curated discovery feed with an established AI-tool audience.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Futurepedia

Useful candidate-generation source, not a quality signal by itself.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Toolify

Good for recall and long-tail discovery; entries need independent validation.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Official Ecosystems

Anthropic Claude Plugin Marketplace

First-party source for Claude Code plugins and marketplace structure.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Anthropic Skills

Primary source for Anthropic's public Agent Skills and reference implementations.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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OpenAI Developers

Codex, plugins, skills, MCP, cookbooks, model guidance and use cases.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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OpenAI Cookbook

Practical workflows for agents, evals, data, tools and production AI.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Google Gemini API Cookbook

Function calling, files, embeddings, multimodal work and Gemini API recipes.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Official MCP Registry

Preferred registry for MCP server discovery before falling back to third-party directories.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Practitioners & Technical Voices

AI Engineer World's Fair

Dense source of production agent, tooling, harness, security and infrastructure practices.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Simon Willison — Generative AI

Hands-on coverage of models, coding agents, MCP and practical AI tooling.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Hamel Husain

Focused on eval process, coding-agent evals and production AI quality.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Eugene Yan

Strong practical work on context, evals, security, agents and production systems.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Chip Huyen

Framework-level writing on agents, platforms, evals and production failure modes.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Shreya Shankar

Research-driven source for evals, agent-first data systems and document processing.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Interconnects — Nathan Lambert

Useful for tracking model capability shifts and open-vs-closed frontier dynamics.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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One Useful Thing — Ethan Mollick

Frequent hands-on guides for choosing and using frontier AI systems for real work.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Quantitative & Benchmark Sources

skills.sh

Useful for finding skills with measurable adoption, then inspecting source and audits separately.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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GitHub Trending

Early signal for open-source projects before they appear in mainstream AI directories.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Hugging Face Trending Spaces

Strong discovery surface for models, agents, MCP, OCR, voice, image/video and benchmarks.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Hugging Face Models

Model cards, downloads, likes, tasks and open-weight release activity.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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OpenRouter Rankings

Useful directional signal for which models are actually being routed through a large multi-model ecosystem.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Artificial Analysis

Tracks intelligence, speed, price and other model-performance dimensions.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Arena

Useful independent complement to fixed benchmarks for model quality.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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OpenAlternative

Strong structured discovery source for active open-source AI and developer projects. Used as candidate generation, then validated against canonical sources.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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Technical Communities

Hacker News

Useful early signal for technical projects and real-world criticism.

Its published material is used as a dated reference for the signal above. Verify time-sensitive claims at the original source.

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About the data +

Live GitHub signals include current repository metadata for linked projects. The Index uses the last verified source data available.

Edition snapshots cover figures from sources that cannot be refreshed reliably. Those values are labeled so you can verify them at the original source.

Curated entries are selected for primary documentation, ecosystem relevance, or practitioner contribution. These pages remain a dated Index edition.