Week 43, 2026 · Oct 19 to Oct 25, 2026
New in week 43
Tools first seen in the catalog this week, newest first. Also as an Atom feed (or just harnesses & sdks).
175 listings first seen Oct 19 to Oct 25, 2026
- 0.420score
Youtu-Agent
Tencent
Framework for building, running and evaluating autonomous agents, with a planner-based multi-agent mode, skills and agent RL training.
HarnessDFreshness: D★ 4.6K↓ 23/wk - 0.574score
Pocket Flow
The Pocket
Minimal Python graph framework of about 100 lines for LLM agents, workflows, RAG and map-reduce pipelines.
HarnessCFreshness: C★ 11.3K↓ 7.9K/wk - 0.656score
chidori
ThousandBirdsInc
TypeScript agent framework on a Rust runtime, where runs are checkpointed, replayed with zero LLM calls and resumed after a crash.
HarnessAFreshness: A★ 1.4K↓ 62/wk - 0.695score
LangChainGo
LangChainGo
Go implementation of LangChain for writing LLM-based programs from composable building blocks.
HarnessAFreshness: A★ 9.7K - 0.710score
trigger.dev
triggerdotdev
TypeScript platform to build and deploy long-running AI agents and workflows with retries, queues and human approval steps.
HarnessAFreshness: A★ 16.6K - 0.630score
tRPC-Agent-Go
Tencent tRPC
Go framework for multi-agent systems with graph workflows, tools, session memory, MCP, A2A, AG-UI and OpenTelemetry.
HarnessAFreshness: A★ 1.9K - 0.787score
trueforge
truefoundry
Open-source agent harness that runs the model loop for you, with MCP tools, skills, sandboxing, approvals and a chat UI.
HarnessAFreshness: A★ 6.4K - 0.568score
dexto
truffle-ai
Open agent harness for AI applications, with a YAML-configured coding agent, sessions, tools, MCP support and a CLI.
HarnessAFreshness: A★ 657 - 0.604score
caspian-sdk
TryCaspian
Python and TypeScript SDK that lets an agent message people on email, Slack, Discord, Telegram and other channels through one handler.
HarnessBFreshness: B★ 973↓ 57/wk - 0.604score
underthesea
undertheseanlp
Python toolkit for Vietnamese NLP with a multi-provider agent module that calls LLM APIs using only the standard library.
HarnessBFreshness: B★ 1.8K↓ 8.6K/wk - 0.581score
code-mode
universal-tool-calling-protocol
TypeScript library that lets agents call MCP and UTCP tools by running model-written code in a sandbox.
HarnessBFreshness: B★ 1.6K - 0.655score
python-utcp
universal-tool-calling-protocol
Official Python implementation of the Universal Tool Calling Protocol, calling HTTP, CLI, MCP and text-file tools through plugins.
HarnessBFreshness: B★ 653↓ 1.9K/wk - 0.518score
Upsonic
Upsonic
Python framework for autonomous agents that work in a sandboxed workspace, and task agents with tools and MCP support.
HarnessCFreshness: C★ 8K↓ 244/wk - 0.698score
PageIndex
VectifyAI
Python library that builds a tree index of long documents and has an LLM reason through it to retrieve answers, without a vector database or chunking.
HarnessAFreshness: A★ 39.6K↓ 43.6K/wk - 0.727score
Vercel AI SDK
Vercel
TypeScript toolkit for AI apps and agents with a unified provider API, streaming, UI hooks and a wrapper for running established agent harnesses.
HarnessAFreshness: A★ 27.5K - 0.457score
workflow
vercel
Workflow SDK: Build durable, reliable, and observable apps and AI Agents in TypeScript
HarnessAFreshness: A★ 2.5K - 0.662score
attestix
VibeTensor
Python toolkit for signed identities, verifiable credentials and delegated authority for AI agents, with MCP and REST interfaces.
HarnessAFreshness: A★ 839↓ 161/wk - 0.593score
VeADK
Volcengine (ByteDance)
Python SDK for building agents on Volcengine AgentKit, with a bundled Web UI, Studio deployment and short- and long-term memory.
HarnessAFreshness: A★ 347↓ 1.1K/wk - 0.699score
VoltAgent
VoltAgent
TypeScript framework for AI agents with tools, memory, RAG, MCP and sub-agents, paired with a Cloud or self-hosted console.
HarnessAFreshness: A★ 10.9K - 0.619score
Agency Swarm
VRSEN
Python framework for multi-agent applications where agents with defined roles talk through explicit flows, built on the OpenAI Agents SDK.
HarnessAFreshness: A★ 4.6K↓ 757/wk - 0.566score
LightAgent
wanxingai
Python agent framework for OpenAI-compatible agents with tools, memory, MCP connections, multi-agent collaboration and workflows.
HarnessAFreshness: A★ 1.2K↓ 61/wk - 0.588score
activegraph
yoheinakajima
Event-sourced Python graph runtime where agent behaviors react to a shared graph, with an audit trail and fork-and-diff replay.
HarnessAFreshness: A★ 707↓ 603/wk - 0.619score
yomo
yomorun
Open-source LLM function calling framework for AI agents, with serverless LLM tools and geo-distributed infrastructure.
HarnessAFreshness: A★ 1.9K - 0.617score
SkillNet
zjunlp
Open infrastructure for discovering, evaluating, creating and routing reusable AI agent skills, with a Python SDK.
HarnessAFreshness: A★ 1.4K↓ 2.3K/wk - 0.408score
Azure AI Foundry Agents SDK
Microsoft
Managed Microsoft Foundry service for building, deploying and scaling AI agents, with a Python client library on PyPI.
HarnessFFreshness: F↓ 1.1M/wk
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