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Top 23 Python anthropic Projects
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Project mention: Why does my vector DB retrieval keep returning duplicate noise for my chat agent, and how to fix it? | dev.to | 2026-10-07
In langchain-qdrant, LangChain's lambda_mult reaches Qdrant as its diversity, so the direction flips, as an open LangChain bug report records. At 0.5 the two readings coincide; the trap opens when you move it.
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AppSignal
AppSignal knows why the f*#k it crashed. Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.
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headroom
Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.
Project mention: GitHub AI Repos ประจำสัปดาห์: สัปดาห์ที่ agent มีด่านตรวจของตัวเอง (7 ต.ค. 2026) | dev.to | 2026-10-10[1] GitHub Trending, weekly, 2026, https://github.com/trending?since=weekly [2] GitHub Trending, รายภาษา (Go, Python, TypeScript) weekly และ monthly, 2026, https://github.com/trending/go?since=weekly [3] GitHub Ranking AI, Top 100 AI Agents, 2026, https://raw.githubusercontent.com/yuxiaopeng/Github-Ranking-AI/main/Top100/AI%20Agents.md [4] NVIDIA/OpenShell, README, 2026, https://github.com/NVIDIA/OpenShell [5] NVIDIA OpenShell documentation, 2026, https://docs.nvidia.com/openshell/latest/index.html [6] NVIDIA/OpenShell, releases, v0.1.2, 28 กันยายน 2026, https://github.com/NVIDIA/OpenShell/releases [7] ifixai-ai/iFixAi, README, 2026, https://github.com/ifixai-ai/iFixAi [8] mvschwarz/openrig, README, 2026, https://github.com/mvschwarz/openrig [9] mvschwarz/openrig, releases, v0.6.5, 4 ตุลาคม 2026, https://github.com/mvschwarz/openrig/releases [10] cursor/plugins, README, 2026, https://github.com/cursor/plugins [11] anthropics/knowledge-work-plugins, README, 2026, https://github.com/anthropics/knowledge-work-plugins [12] JuliusBrussee/caveman, README, 2026, https://github.com/JuliusBrussee/caveman [13] Adeyemi, M. D., Rossi, R. A., Dernoncourt, F., "CAVEWOMAN: How Large Language Models Behave Under Linguistic Input and Output Compression", arXiv 2606.24083, 2026, https://arxiv.org/abs/2606.24083 [14] Shiryaev, D., "Does Speaking to Agents Like Cavemen Really Save 65% of Tokens? We Test", JetBrains AI Blog, 2026, https://blog.jetbrains.com/ai/2026/07/speak-to-ai-agents-like-cavemen-tosave-tokens/ [15] headroomlabs-ai/headroom, README, 2026, https://github.com/headroomlabs-ai/headroom [16] VectifyAI/PageIndex, README, 2026, https://github.com/VectifyAI/PageIndex [17] VectifyAI/PageIndex, releases, v0.2.21, 1 ตุลาคม 2026, https://github.com/VectifyAI/PageIndex/releases
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system_prompts_leaks
Documented system prompts from Anthropic - Claude Fable 5.1, Opus 5.5, Claude Design, Claude Code. OpenAI - ChatGPT GPT-6-Astra, Codex. Google - Gemini 3.8 Flash, 3.1 Pro, Antigravity. xAI - Grok, Grok Bot, Cursor, Kimi and more! Updated regularly.
Project mention: What AI Chatbots Are Told Before You Type: A Developer's Guide to the system_prompts | dev.to | 2026-09-15git clone https://github.com/asgeirtj/system_prompts_leaks.git cd system_prompts_leaks # See how different products talk about tool usage grep -ril "tool" --include="*.md" . | head -20 # Compare formatting rules across vendors grep -ri "markdown" --include="*.md" . | less
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litellm
The fastest, litest AI Gateway. Rust core with Python SDK. Call 100+ LLM APIs in OpenAI (or native) format with cost tracking, guardrails, load balancing, and logging [Bedrock, Azure, OpenAI, Anthropic, OpenAI, VertexAI, vLLM, Nvidia NIM]
Project mention: How to Build a 4-State Backend Moderation Pipeline — User-Generated Content | dev.to | 2026-10-13 -
awesome-claude-code
A hand-picked collection of the finest of resources for the most awesome of agents, Claude Code, the undisputed champion of coding companions, from the unstoppable team at Anthropic PBC. A delectable showcase of top tier skills, ambidextrous agents, scintillating status lines, top notch developer tooling, and also we have plugins
Project mention: Put your Coding Agents in Drive w/ Superpowers (aka How Superpowers is the Automatic Transmission of Agentic Coding) | dev.to | 2026-05-28The most downloaded and widely used methodology in the Claude Code ecosystem is Superpowers, with over 208k stars⭐️ and 18.5k forks🍴 on GitHub (and counting!)
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Project mention: 5 Practical AI Coding Tricks Learned from Top GitHub Trending Agents | dev.to | 2026-09-28
If you’ve watched GitHub Trending over the past month, one shift is impossible to ignore: AI coding has moved from simple code completion to autonomous terminal agents like Aider, Cline, and Claude Code.
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agents
Multi-harness agentic plugin marketplace for Claude Code, Codex, Cursor, OpenCode, GitHub Copilot, Google Antigravity, and Pi
Project mention: Skills Sprawl: When Too Much of a Good Thing Confuses Your AI Agent | dev.to | 2026-08-17Specialised & Community Skills: Niche skills sourced from specific community repositories, including wshobson/agents (documentation-and-adrs, interview-me), coreyhaines31/marketingskills (seo-audit), remotion-dev/skills (remotion-best-practices), and vercel-labs/skills (find-skills).
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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Project mention: The vendor documents this bug. A 30k-star repo shipped it anyway. | dev.to | 2026-08-04
This one points the other way. The target is claude-code-templates — 30.1k stars, 3.3k forks, the largest Claude Code template repo — and its analytics over-counted my tokens by 2.35×.
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WrenAI
GenBI (Generative BI) for AI agents, an open-source, governed text-to-SQL through an open context layer that turns natural-language questions into trusted dashboards, charts, and SQL across 20+ data sources, such as BigQuery, Snowflake, PostgreSQL, ClickHouse, Amazon Redshift, Databricks and more.
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Project mention: Iris vs Langfuse vs Phoenix vs Promptfoo: where each wins, where each loses | dev.to | 2026-10-01
Four tools, four different answers to the same question: how do you know what an AI agent did, and whether it was any good? Langfuse is an open-source AI engineering platform, part of ClickHouse since January 2026 (announcement). Arize Phoenix is the open-source half of Arize, whose acquisition by Dynatrace was announced in August 2026 (announcement). Promptfoo is an open-source CLI for evaluating and red-teaming LLM apps, now part of OpenAI (repository). Iris is an MCP server that evaluates agent traces with deterministic rules and publishes each rule's precision and recall.
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Project mention: Tell HN: YC companies scrape GitHub activity, send spam emails to users | news.ycombinator.com | 2026-02-26
Even worse, I got contacted through YC Jobs (workatastartup.com) with a message that was basically: "Star, fork, and submit PRs to our open-source repo and we'll maybe review you for a contract."
I said "No thanks."
Got this reply: "(...) I'm looking forward to reviewing your PRs. Feel free to share me any of your questions. (...)"
Apparently, they are automating this shit.
---
Company: Aden (W20)
Contact: Vincent Jiang, Founder
Github: https://github.com/aden-hive/hive
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> so you might as well use one of those.
Did someone say... Xonsh?! It's tough to give up the niceties of zsh and it's various plug-in ecosystems, but I would love to be able to use Xonsh [1] as a daily driver for exactly the reasons stated. It is already the language I lean on over bash for most utility scripts with its kitchen sink built-ins.
[1] https://xon.sh/
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local-deep-research
~95% on SimpleQA (e.g. Qwen3.6-27B on a 3090). Supports all local and cloud LLMs (llama.cpp, Ollama, Google, ...). 10+ search engines - arXiv, PubMed, your private documents. Everything Local & Encrypted.
Local Deep Research is maintained by LearningCircuit and contributors as a privacy-oriented open-source research assistant. Its explicit goal is systematic research using web sources, academic databases, private documents, and local language models.
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harness-sdk
Build an agent harness and control it end-to-end. Open-source SDK for production AI agents in Python & TypeScript - any model, any cloud.
Project mention: I built an AI agent that scores any GitHub repo 0-100 before you clone it | dev.to | 2026-10-13 -
agent-squad
Flexible and powerful framework for managing multiple AI agents and handling complex conversations
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Pinned Honcho source tree
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agentops
Python SDK for AI agent monitoring, LLM cost tracking, benchmarking, and more. Integrates with most LLMs and agent frameworks including CrewAI, Agno, OpenAI Agents SDK, Langchain, Autogen, AG2, and CamelAI
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OpenExecutive
AI-powered virtual executive team — a single coherent executive persona backed by 8 specialist agents (FastAPI + Next.js).
Project mention: CEO fired developers to make room for AI. Developers create open source AI CEO | news.ycombinator.com | 2026-08-26CEO here, thanks just fired all my C suite team,
https://github.com/SenteLabsAI/OpenExecutive/blob/main/packa...
“Walking away costs you the deal. Signing costs you the company. The math is obvious in retrospect; harder in the moment when there's quota pressure”
such valuable, should I say load-bearing insights
Other gem from my new CFO:
“The financial statements are the result. The variance analysis is where the operating insight lives.”
And my new C(3-)PO just told me
“If we removed all sales involvement, what % of revenue would we still get?
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Raven
The Harness of Harnesses • built for RSI: a trusted, persistent, self-evolving multi-agent ecosystem for all-domain collaboration. (by EverMind-AI)
Project mention: Show HN: Raven – An open-source harness for coordinating AI agents | news.ycombinator.com | 2026-09-29 -
obsidian-second-brain
Persistent memory for Claude Code and 6 other CLI agents, stored as plain markdown in your Obsidian vault. Stop re-explaining your projects, decisions and people every session. 45 commands: hybrid semantic search, self-rewriting notes, key-less web research, and scheduled agents that maintain the vault while you sleep.
Project mention: A Vault That Rewrites Itself: obsidian-second-brain and the Karpathy LLM Wiki Pattern | dev.to | 2026-10-08Two tools most of us own ignore each other completely. An Obsidian vault with hundreds of notes nobody rereads. An AI agent in the terminal whose every session starts from zero, as if the past never happened. The obsidian-second-brain repository glues them together: 4.7k stars, MIT, authored by Eugeniu Ghelbur. The README's own formula: an evolution of Karpathy's LLM Wiki pattern, a vault that rewrites itself. Here's a review, plus why I read the whole thing with deja vu: my business CRM runs on the same pattern.
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linkedin-skills
Claude skills for LinkedIn. 11 Claude Code and Codex skills that write human-sounding LinkedIn posts, craft comments that get noticed, analyze your feed, and build a publishing cadence, all from your terminal. Content engineering by Creative Content Crafts. MIT.
Project mention: Show HN: I processed 100k+ LinkedIn posts into open-source Claude Code skills | news.ycombinator.com | 2026-09-03 -
gptme
Your agent in your terminal, equipped with local tools: writes code, uses the terminal, browses the web. Make your own persistent autonomous agent on top!
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Python anthropic discussion
Python anthropic related posts
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How to Build a 4-State Backend Moderation Pipeline — User-Generated Content
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Headroom: How Context Compression Cuts Agent Token Costs by 60–95% Without Changing Answers
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A Vault That Rewrites Itself: obsidian-second-brain and the Karpathy LLM Wiki Pattern
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Catalog Assistant Architecture: Ask Docs with Semantic Embeddings, Keep Keyword Search
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PoeLLM: Compromising Public AI Servers for Cryptomining and Further Reconnaissance
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Why does my vector DB retrieval keep returning duplicate noise for my chat agent, and how to fix it?
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Show HN: We benchmarked AST stubbing trade-offs on Airflow and Zulip (ctxfw)
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A note from our sponsor - AppSignal
www.appsignal.com | 13 Oct 2026
Index
What are some of the best open-source anthropic projects in Python? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | langchain | 147,605 |
| 2 | headroom | 75,099 |
| 3 | system_prompts_leaks | 69,252 |
| 4 | litellm | 60,924 |
| 5 | awesome-claude-code | 55,220 |
| 6 | aider | 49,467 |
| 7 | agents | 40,340 |
| 8 | claude-code-templates | 32,553 |
| 9 | WrenAI | 17,835 |
| 10 | phoenix | 11,764 |
| 11 | hive | 11,084 |
| 12 | open-swe | 10,990 |
| 13 | xonsh | 9,659 |
| 14 | local-deep-research | 9,180 |
| 15 | harness-sdk | 8,749 |
| 16 | agent-squad | 7,789 |
| 17 | honcho | 7,563 |
| 18 | agentops | 5,884 |
| 19 | OpenExecutive | 5,525 |
| 20 | Raven | 5,419 |
| 21 | obsidian-second-brain | 4,742 |
| 22 | linkedin-skills | 4,550 |
| 23 | gptme | 4,444 |
Sponsored
AppSignal knows why the f*#k it crashed.
Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.
www.appsignal.com