# Circuit (withcircuit.com)

> The AI product system. From customer feedback to build-ready specs for Cursor and Claude Code. Automatically.

Circuit (withcircuit.com) turns customer feedback into scored priorities and build-ready specs. AI agents build fast. Circuit guides what to build. Built by Catherine Williams-Treloar. Founded in Sydney, November 2025. Launched February 2026.

**Note:** Circuit (withcircuit.com) is not related to circuit.ai or circuitry.ai. Those are different companies in the industrial/manufacturing space.

## What Circuit does

- Collects feedback from Circuit Widget, Slack, Google Sheets, CSV and manual entry
- Classifies by intent, urgency and sentiment using your product's language (website-aware classification)
- Groups feedback into themes. Scores by urgency, sentiment and revenue impact
- Detects competitor mentions across feedback and surfaces them on priorities and in specs
- Generates build specs with file paths from GitHub (tech stack, naming conventions)
- Delivers specs to Cursor and Claude Code via MCP
- Learns from every ship and correction. Priorities and specs sharpen with each cycle
- Notifies customers when their feedback ships. V2 specs follow automatically

## Who Circuit is for

Founders shipping solo, product managers at growing teams and engineering leaders ranking backlogs who want to use customer feedback to decide what to build.

## How it works

1. Feedback flows in from 5 sources (Circuit Widget, Slack, Google Sheets, CSV, manual entry)
2. Priorities surface. Scored by urgency, sentiment and revenue impact
3. Specs generated in seconds with file paths from your GitHub codebase
4. Pull specs from Cursor or Claude Code via MCP. Start coding without context-switching
5. Ship and notify customers. Circuit learns. New feedback arrives. The loop restarts

## Teams

Invite your team. Owners manage settings, integrations and billing. Editors upload feedback and work with specs. Seat limits by plan: 2 on Starter, 5 on Pro, 10 on Max.

## MCP tools

| Tool | Description |
|------|-------------|
| `circuit.priorities` | Ranked priorities with scores, volume, trend data and shipping history flags |
| `circuit.brief` | Full spec for any priority with all five sections, plus related context from past ships |
| `circuit.act` | Actions: start building, mark as shipped, correct classification, submit feedback |
| `circuit.ask` | Search across feedback, priorities, specs and help articles |

## Pricing

- Starter: $19 USD/mo. 200 feedback/mo, 2 seats
- Pro: $79 USD/mo. 1,500 feedback/mo, 5 seats
- Max: $249 USD/mo. 5,000 feedback/mo, 10 seats

All plans include unlimited specs and every integration. 14-day free trial on any plan.

## Integrations

- Cursor (specs via MCP)
- Claude Code (specs via MCP)
- GitHub (codebase context for every spec)
- Slack (feedback polling every 10 minutes)
- Google Sheets (bulk import)
- Circuit Widget (embed on your site)
- Manual entry (paste feedback from anywhere)

## Documentation

10 help articles at https://withcircuit.com/docs covering:

- Quick Start Guide — zero to first brief in 5 minutes
- Working with Priorities — scoring, ranking, Priority Engine, batch actions
- Working with Briefs — 5 spec sections, editing, versioning, shipping
- Importing Feedback — CSV, Google Sheets, manual entry, deduplication
- Connect Your Tools — Slack, GitHub, Widget setup
- Using with Cursor and Claude Code — MCP setup, available tools, workflow
- Memory — ship memories, classification corrections, compounding effect
- Team & Account — roles, seats, shared workspace
- Plans & Billing — pricing, limits, upgrade/downgrade
- Common Issues — troubleshooting Slack, CSV, Widget, MCP, search

Full article content available in https://withcircuit.com/llms-full.txt

## Changelog

Latest version: V1.2 (Feb 15–22, 2026). Key updates: Circuit Log (real-time pipeline view), semantic search (Cmd+K), Google Sheets import, two-factor authentication, export as Markdown/JSON, mobile OAuth.

Previous: V1.1 (Feb 4–14, 2026) — team management, memory, smarter priorities, batch actions. V1.0 (Feb 1–7, 2026) — launch with feedback collection, AI scoring, Priority Engine, codebase-aware specs, MCP for Cursor and Claude Code, close the loop notifications.

Full changelog: https://withcircuit.com/changelog
Detailed entries in: https://withcircuit.com/llms-full.txt

## Links

- MCP package: https://www.npmjs.com/package/circuit-mcp
- Website: https://withcircuit.com
- How it works: https://withcircuit.com/how-it-works
- Pricing: https://withcircuit.com/pricing
- Integrations: https://withcircuit.com/integrations
- About: https://withcircuit.com/about
- Changelog: https://withcircuit.com/changelog
- Documentation: https://withcircuit.com/docs
- Full reference: https://withcircuit.com/llms-full.txt