HagfishInvoicing for creators who mean business.

Create professional invoices, collaborate with clients, and keep the paper trail in one calm workspace.

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Invoice beautifully

Create professional invoices in global currencies, apply discounts, VAT, and withholding tax, then schedule or send them.

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Know the business

Keep clients, expenses, payment information, recurring work, invoice status, and your send entitlement in one place.

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Build it into your workflow

Use scoped API keys, idempotent REST resources, exact server-calculated totals, and signed webhooks for reliable integrations.

Hagfish brings invoices, clients, and expenses into one workspace. Use the web app to manage your business, or bring invoicing into your own workflow with the API and CLI.

From a draft to a delivery

Create the client, draft the invoice, and review the total and applicable credits before exporting a PDF or requesting a send. Hagfish uses your existing plan and credits.

Explore the API → · Use the CLI →

Available releases

The web app and REST API are available at hagfish.app. The published packages are [email protected] and the local read-only [email protected]. Hosted assistant connections require an approved application registration. Client onboarding links and durable delivery are available through the API, CLI and hosted review workflow.

HagfishInvoicing for creators who mean business.

Invoice beautifully

Know the business

Build it into your workflow

From a draft to a delivery ​

From a draft to a delivery