# FYN

> FYN is an AI personal finance app that unifies receipts, emailed purchases, bank transactions, budgets, subscriptions, and household finances in one searchable financial memory.

FYN is available on the web, iOS, and Android. A free plan is available without a credit card. The Pro plan adds live bank syncing through Plaid, expanded AI usage, household members, forecasting, and data export. FYN uses read-only bank access and cannot move money.

## Primary pages

- [FYN home](https://fyn.fyi/): Product overview and signup
- [Features](https://fyn.fyi/features/): Receipt scanning, bank sync, AI chat, household finance, subscriptions, and alerts
- [Pricing](https://fyn.fyi/pricing/): Current Free and Pro plan details
- [Security](https://fyn.fyi/security/): Data protection and read-only access
- [Comparisons](https://fyn.fyi/compare/): Comparisons with other personal finance apps
- [Free calculators](https://fyn.fyi/tools/): Budget, subscription, and net-worth calculators
- [Personal finance guides](https://fyn.fyi/blog/): Educational articles and product comparisons

## AI agents and integrations

- [Agent integrations](https://fyn.fyi/agents/): Connect ChatGPT, Claude, Cursor, or any compatible MCP client
- [Agent API documentation](https://fyn.fyi/docs/agent-api/): Authentication, endpoints, and examples
- [Full API reference for AI agents](https://fyn.fyi/llms-full.txt): LLM-curated complete reference — endpoints, parameters, auth, rate limits
- MCP endpoint: `https://api.fyn.fyi/v1/mcp` (OAuth 2.1 + PKCE with dynamic client registration; self-discovering clients: see `.well-known/oauth-protected-resource` and `.well-known/oauth-authorization-server` on `api.fyn.fyi`). Human approves read-only access once.
- Agent API base: `https://api.fyn.fyi/v1/agent/` — Bearer API key; key creation requires a human (sign up at https://fyn.fyi/register, then Settings → Agent Access → New Key)
- Access model: read-only and scoped to the authenticated FYN account
- Source skill: [FYN Finance Agent Skill](https://github.com/fynfyi/agent-skill)

## Core capabilities

- Scan paper receipts with AI OCR, including line items and return policies
- Split itemized restaurant bills by person, including shared items and proportional tax and tip
- Prepare Venmo and Cash App payment-request links for each person after a bill split
- Forward digital receipts and order confirmations by email
- Sync and categorize bank transactions with Plaid on Pro
- Match receipts and emailed purchases to bank charges
- Track budgets, cash flow, subscriptions, net worth, and household spending
- Ask natural-language questions by chat or voice
- Receive proactive alerts for spending spikes, budget risk, and subscription price changes
- Flag a lower price on something you can still return, and smaller packs at the same price
- Query authorized financial data through 25 read-only Agent API endpoints

## Support

- [Help and support](https://fyn.fyi/support/)
- Email: support@fyn.fyi