> ## Documentation Index
> Fetch the complete documentation index at: https://docs.melso.ai/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Melso MCP: https://mcp.melso.ai/mcp (OAuth; one company per connection). Documentation-search MCP: https://docs.melso.ai/mcp; it does not act on customer accounts.
>
> Use the live tool list and respect company membership. Ask the person to approve the exact invoice or tax return version in the signed-in app. Melso's professionals prepare and file included returns after approval; an AI assistant does not file. A prepared file or an approval is not evidence of filing: only the AEAT's reference and receipt are. Keep credentials out of chat and logs.

# OpenAPI público de la API Melso — OpenAPI document

> The Melso partner API OpenAPI document is public at /api/openapi.yaml. No account is required to read it.

The partner REST contract is public. No account, cookie or key is required to read it.

[Download api/openapi.yaml](https://docs.melso.ai/api/openapi.yaml)

The document is the source of truth for paths, fields and availability. Each operation sets `x-melso-status`:

* `live`: Melso runs it in production today. On the partner REST API that path is private beta: a key works once Melso enables your account.
* `preview`: planned. Not callable yet.

`x-melso-actor: person` means a signed-in person decides. A partner key cannot make that call.

The same contract is rendered, one operation per page, in the reference. Start with [Authentication](https://docs.melso.ai/api/authentication.md), [Availability](https://docs.melso.ai/api/availability.md) and [Examples](https://docs.melso.ai/api/examples.md). The Spanish overview is [API para Hacienda, Seguridad Social y Verifactu](https://docs.melso.ai/es/api-hacienda.md).


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