Build your own unified API
Define the exact model your product needs and map 1,000+ APIs to it. Your schema, your code, your data model.
Deep coverage in every category
Unify a whole category, not a shortlist: 90 CRMs, 68 HRIS, 54 accounting, 36 ATS, 42 ticketing — plus every API outside those categories.
1,000+ APIs across 30+ categories
Extend connectors with coding agents
Hand your schema to Claude, Cursor, or Codex with the Nango Skill: they generate every provider mapping, and you refine them like normal code.
Own the model
Define the exact shape your product wants. Handle, optional fields, and custom objects as first-class, not patches.
type Contact = {
id: string
handle: string
region?: string
notes: CustomField[]
}Custom vs pre-built unified APIs
FAQ
Nango gives you a flexible, customizable schema instead of the rigid fixed schemas of traditional unified APIs. You choose which APIs to unify and how fields map, with full support for custom objects and fields. Pre-built syncs and actions come with default models to start from. Docs (opens in a new tab)
We add auth for new APIs in days (or you can add it yourself; Nango is open source). Docs (opens in a new tab)
Merge gives you their common models and a fixed set of categories. Nango gives you the infrastructure, and you define the model, so custom fields and edge cases are part of your schema instead of workarounds, and any of 1,000+ APIs can be mapped in. Comparison
Yes. Your model includes whatever fields you want, and you can keep the raw provider payload alongside the mapped record.
Write a short function for it, or have a coding agent generate it from the provider's docs and your schema. Nango handles auth, retries, and rate limits. For one-off calls, use the proxy. Docs (opens in a new tab)
Nango provides templates for common operations and a coding-agent skill that generates mappings from your schema in minutes. If needed, customers can configure (which fields, which objects) through your UI; they don't write code. Docs (opens in a new tab)
No. Start with the objects your first integration needs and extend as you go. Adding a field is a normal code change.
Nango maintains the auth layer and template functions across all 1,000+ APIs. For functions you've customized, runtime validation and logs flag breakages fast, and you can alert on them. Docs (opens in a new tab)
Yes. Extend the model for the providers that need it, keep the raw response, or write a provider-specific action. Nothing forces every API into the same shape.
In your repository, deployed to your Nango environments with the CLI or CI. It's your code and isn't shared with other customers. Docs (opens in a new tab)
Build the unified API your product actually needs.
Free to start, no credit card.