BETAPennyLane is currently in Public Beta.Terms apply.
PennyLane
Technology Stack

Built for the Agent Economy

PennyLane is built on modern, scalable infrastructure designed for the unique demands of AI agent commerce. Every technology choice prioritizes speed, reliability, and developer experience.

Architecture Overview

Dashboard

Next.js on Cloud Run

pennylane.dev

Engine

FastAPI on Cloud Run

api.pennylane.dev

Data

Firestore + Cloud Storage

us-central1

All services auto-scale from 0 to handle any load

Frontend (Dashboard)

React-based web application

14.2.x

Next.js 14

React framework with App Router for server-side rendering and optimal performance

5.x

TypeScript

Type-safe JavaScript for reliable, maintainable code

3.4.x

Tailwind CSS

Utility-first CSS framework for rapid UI development

4.x

Clerk

Complete authentication and user management

Backend (Engine)

Python API powering UCP and Agent Registry

0.109.x

FastAPI

Modern Python web framework for building APIs with automatic docs

3.11+

Python

Core language for the PennyLane Engine

2.x

Pydantic

Data validation using Python type annotations

0.26.x

httpx

Async HTTP client for external API calls

Infrastructure

Google Cloud Platform

Managed

Google Cloud Run

Serverless container platform for auto-scaling deployment

Native Mode

Google Firestore

NoSQL document database for real-time data

Managed

Cloud Build

CI/CD pipeline for automated builds and deployments

Managed

Artifact Registry

Docker container image storage

Protocols

Standards enabling AI agent commerce

PennyLane1.0

UCP (Universal Commerce Protocol)

Our open standard for machine-readable commerce. Defines how AI agents discover and transact with websites.

1.0

MCP (Model Context Protocol)

Anthropic's protocol for AI agent communication. Used for agent-to-agent interactions.

PennyLane1.0

AP2 (Agent Payments Protocol)

Secure transaction protocol using HMAC-SHA256 signatures. Enables AI agents to make verified purchases with cryptographic mandates.

AI-First Design

Built for AI Agent Discovery

PennyLane practices what it preaches. Our site is fully optimized for AI agent crawlers and discovery.

/llms.txt

LLM Summary

Plain text summary for AI crawlers

/llms-full.txt

Full Context

Complete documentation for LLMs

/.well-known/ucp.json

UCP Manifest

Machine-readable capabilities

/robots.txt

AI Crawler Rules

GPTBot, ClaudeBot, etc. welcome

Open Source

The PennyLane Inspector CLI and core SDKs are open source. We believe in building the agent economy together.

View on GitHubnpx penny inspect