Browse Agents

Langfuse

API · CLI

Open-source LLM observability and analytics. Trace, evaluate, and debug LLM apps with prompt versioning, score…

Microsoft PromptFlow

API · CLI

Build, evaluate, and deploy LLM applications as visual DAG flows — chain prompts, Python, and tools, then run batch…

OpenLLMetry

API

Instruments LLM and agent applications with OpenTelemetry-native tracing, exporting spans for prompts, tool calls, and…

Datadog LLM Observability

API · MCP · CLI

End-to-end monitoring for LLM applications — trace prompts, evaluate responses, track costs, and debug AI pipelines in…

Arize Phoenix

API · CLI

Traces, evaluates and debugs LLM and agent applications from an open-source observability platform built on…

Google Agents CLI

CLI

Turns any coding assistant into an expert at creating, evaluating, and deploying AI agents on Google Cloud. An open CLI…

LangChain / LangSmith

API · MCP · CLI

Framework for building LLM applications with chains, agents, and tool use — plus LangSmith for tracing, evaluation, and…

AgentScope

CLI · API

Builds multi-agent applications with a Python framework focused on transparency, observability, and tracing. Includes a…

Genkit

API · CLI

Builds AI features and agent flows in JavaScript, Go or Python with typed flows, tool calling and a local dev UI for…

Cursor Agent SDK

API · CLI

Lets developers define, test, evaluate, and deploy agents as Markdown and TypeScript code, on Cursor-managed hosting or…

NVIDIA NeMo Agent Toolkit

API · CLI · MCP

Connects, profiles, evaluates, and optimizes agent workflows across frameworks like LangChain, LlamaIndex, and CrewAI…

Cloudflare AI Gateway

API

Proxies requests to OpenAI, Anthropic, Google, Workers AI, and other model providers, adding analytics, logging…

Vercel AI Gateway

API

Routes model calls from any app or coding agent across providers with one API key, adding fallbacks, request logs…