Project

ReAct Agent Framework

A production-style framework for building tool-using ReAct agents with provider abstraction, secure tool access, and live reasoning trace streaming.

By Harshit Singhal | April 2026

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SSE Reasoning Trace Provider Abstraction JWT + ABAC Pluggable Tools

Live Demo

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Demo of ReAct Agent Framework showing reasoning traces, tool calls, and streamed responses.
Live agent trace: think → tool call → answer

Overview

This project is designed as an opinionated baseline for deploying ReAct-style agents in real environments. Instead of focusing only on prompting, it emphasizes operational concerns like authorization boundaries, observability, and provider swap-ability.

Key Capabilities

  • Pluggable Tool Registry Add, remove, or version tools without touching agent orchestration core.
  • Provider Abstraction Swap Gemini and Ollama integrations through a consistent provider interface.
  • SSE Trace Streaming Stream think-act-observe events in real time to UI or debugging dashboards.
  • JWT + ABAC Enforcement Restrict tool-level access per user context for safer production usage.
  • Separated Execution Layers Keep planning, tool execution, and synthesis paths independent for maintainability.

Architecture Notes

  • API layer receives requests and validates auth context before any tool invocation is allowed.
  • Agent core runs iterative think-act-observe loops following the ReAct pattern.
  • Tool runner enforces policy checks and structured input/output contracts around each tool.
  • Streaming channel emits incremental agent events over SSE for UI and debugging workflows.

Tech Stack

LLM ReAct FastAPI SSE JWT ABAC Agents

Repository

Source code, setup instructions, and usage examples are available in the project repository: github.com/harshitsinghal13/react-agent-framework.

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