anthropic

OpenSmith is a local-first, open-source alternative to LangSmith for tracing Python LLM pipelines. It supports decorators, context managers, console output, autopatching, CLI commands, local SQLite storage, and optional Postgres and OpenTelemetry integrations.

Python library for managing LLM conversation history with cache-friendly message ordering, dynamic context, and compaction.

FastAPI backend for the Brush Up tutor app. It retrieves from a markdown note corpus, expands context through graph neighbors, and calls Anthropic to generate grounded programming help for Python, Ruby, and JavaScript.

Minimal Erlang library for calling OpenAI and Anthropic models, with tool-use support and a built-in JSON encoder/decoder.

A GitHub repository of system-prompt overrides for Claude Code, aimed at shrinking the always-on prompt and adjusting behavior for Opus 4.7. It includes a detailed rationale, measured prompt-size reductions, and install steps using tweakcc-fixed.

Eva is an open-source, AI-native coding agent from missingstudio that works as a terminal chat client and writes its conversation history to disk as it happens.

A repository of reusable AI agent skills centered on regression evals and benchmark history, with install instructions and local eval workflows.

A curated learning roadmap for building production AI agents, covering OpenAI, Anthropic, MCP, harnesses, evals, memory, and safety. The README organizes the material into phases with exercises and a prioritized reading table.

Anthropic research report on how people use Claude Code in practice, based on a large privacy-preserving analysis of session data. It covers task types, division of labor between user and model, and how domain expertise affects outcomes.

Anthropic’s Claude Platform docs page tracking system prompt updates for Claude web and mobile apps, with dated entries across model versions and a note that the updates do not apply to the API.

Anthropic help article explaining how Claude marks generated text with embedded watermarks and signed provenance metadata, plus what the markings cover, how to detect them, and key limitations.