Show HN: A2Flow – A workflow engine built around "Agent as Workflow"

Category: ai-ml

Tags: workflow-engine, ai-agents, mcp, approvals, python, fastapi

Score: 7.8/10 (Innovation: 8, Technical: 8, Documentation: 9, Utility: 6)

A2Flow is a chat-driven workflow engine where an AI agent itself plans and executes the workflow, rather than being a step within an external orchestrator. It introduces certificate-scoped tool permissions, sandboxed MCP proxies, and approval gates embedded in the chat thread, with a polished admin UI and full audit logging. The combination of agent-as-runtime, AG-UI/A2UI surfaces, and cryptographic approvals is a genuinely novel approach to business process automation.

Target audience: backend developers, devops engineers, platform teams building internal automation

Repository: https://kaitoy.github.io/a2flow/ · Python · Apache-2.0

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