# Billing and API keys

Plans control how many sites, audits, chat messages, and AI tokens your account can use. API keys are for agent and MCP access.

Canonical URL: https://heynimo.com/docs/billing-and-api-keys
Markdown URL: https://heynimo.com/docs/billing-and-api-keys.md

## AI summary

Summarizes Pro and Business limits, subscription management, usage counters, API key creation, one-time key display, key revocation, and bearer auth for MCP.

## Key points

- Pro is $20/month: 10 sites, 50 audits/month, 200 chat messages/month.
- Business is $199/month: 50 sites, 200 audits/month, 1,000 chat messages/month.
- API keys are for MCP and agent access. They are stored as hashes and can be revoked.

## Sections

### Plans

- Pro costs $20/month and includes 10 sites, 50 audits/month, and 200 chat messages/month.
- Business costs $199/month and includes 50 sites, 200 audits/month, and 1,000 chat messages/month.
- Business raises the monthly token budget from 500K to 2M and is better for teams, agencies, and accounts that need more sites, audits, or chat volume.

### Usage limits

- nimo tracks sites, audits, chat messages, and token usage.
- If you hit a limit, upgrade or wait for the monthly reset.
- Comped accounts may have limits handled separately.

### API keys

- API keys power the nimo MCP server.
- Keys start with nimo_, are shown only once, are stored as hashes, can be revoked from Settings, and are limited to five active keys per user.
- Bearer auth requires an active paid or comped account.
- Create the key in Settings, store it safely, and send it as Authorization: Bearer nimo_YOUR_KEY.

### Keep keys safe

- Use one key per agent or environment.
- Revoke keys when a laptop, teammate, project, or client no longer needs access.


## Related docs

- [Quick start](https://heynimo.com/docs) - Add a site, connect Telegram, and ask nimo what to fix first.
- [Set up a site](https://heynimo.com/docs/setup) - Add your site, pick a schedule, and understand what nimo checks.
- [Telegram](https://heynimo.com/docs/telegram) - Connect Telegram and use nimo from chat.
- [MCP for agents](https://heynimo.com/docs/mcp) - Use public docs MCP, or connect an authenticated MCP client to nimo.
- [Audits](https://heynimo.com/docs/audits) - Run audits and read Core Web Vitals without the jargon.