# Alto API

**Canonical:** https://apis.io/apis/alto-vebra/alto-api/  
**Provider:** Alto (Vebra / Zoopla) — https://apis.io/providers/alto-vebra/  
**Base URL:** https://api.alto.zoopla.co.uk  
**Documentation:** https://developers.vebraalto.com/api

Alto API is one of 4 APIs that [Alto (Vebra / Zoopla)](https://apis.io/providers/alto-vebra/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification. Tagged areas include Real-Estate, CRM, Property Listings, Tenancy, and Property Management. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, authentication docs, a support channel, and an AsyncAPI specification.

The full Alto REST API for UK estate agency operations — 95 documented paths across 27 resource families covering contacts and applicants, property inventory, listings and media, appraisals and valuations, appointments and viewings, leads, offers, sales progression, lettings progression, tenancies, landlords and owners, work orders, suppliers, documents, file notes, branches, negotiators and partner integration status. OpenAPI 3.0.4 with a sandbox and a production server, Bearer JWT obtained via OAuth2 client-credentials against the /token endpoint, an AgencyRef header scoping every call to one agency, and route-level scopes of the form alto/read:contacts and alto/route:get-inventory.

## Machine-readable artifacts (18)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/alto-vebra/refs/heads/main/openapi/alto-api-openapi.json
- **Documentation** — https://developers.vebraalto.com/
- **APIReference** — https://developers.vebraalto.com/api
- **Authentication** — https://developers.vebraalto.com/guides/authenticating-your-requests/
- **Webhooks** — https://developers.vebraalto.com/guides/webhooks/
- **TermsOfService** — https://developers.vebraalto.com/api-terms-of-use
- **Errors** — https://developers.vebraalto.com/guides/error-codes/
- **Glossary** — https://developers.vebraalto.com/guides/glossary/
- **Sandbox** — https://developers.vebraalto.com/guides/access-to-sandbox-alto-ui/
- **Portal** — https://connect.vebraalto.com/connect
- **Support** — https://partnerfeedback.vebraalto.com/
- **Sandbox** — https://raw.githubusercontent.com/api-evangelist/alto-vebra/refs/heads/main/sandbox/alto-vebra-sandbox.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/alto-vebra/refs/heads/main/errors/alto-vebra-problem-types.yml
- **AsyncAPI** — https://raw.githubusercontent.com/api-evangelist/alto-vebra/refs/heads/main/asyncapi/alto-vebra-alto-webhooks-asyncapi.yml
- **Webhooks** — https://raw.githubusercontent.com/api-evangelist/alto-vebra/refs/heads/main/asyncapi/alto-vebra-alto-webhooks-asyncapi.yml
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/alto-vebra/refs/heads/main/overlays/alto-vebra-alto-api-overlay.yaml
- **GettingStarted** — https://developers.vebraalto.com/guides/authenticating-your-requests/
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/alto-vebra/refs/heads/main/apis.yml

## Other Alto (Vebra / Zoopla) APIs (3)

- [Zoopla Leads API](https://apis.io/apis/alto-vebra/zoopla-leads-api/)
- [Zoopla Premium Listing Activations API](https://apis.io/apis/alto-vebra/zoopla-premium-listing-activations-api/)
- [Zoopla Weekly Featured Property (WFP) Activations API](https://apis.io/apis/alto-vebra/zoopla-weekly-featured-property-api/)

## Tags

Real-Estate, CRM, Property Listings, Tenancy, Property Management, United Kingdom

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/alto-vebra/alto-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/alto-vebra/.