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

# Description

> API for accessing project details, impact metrics, and financial information.

## Authentication

This API uses Bearer token authentication with two access levels:

1. Standard Access: Required for most endpoints. Include token in Authorization header as `Bearer <token>`
2. Extended Access: Required for sensitive financial data. Include enhanced token in Authorization header as `Bearer <token>`

### Token Lifecycle

* Tokens expire after 1 year from issuance
* Expiration date is included in the token's `exp` claim
* System will return 401 with TOKEN\_EXPIRED code when using expired tokens
* Obtain a new token before expiration to ensure uninterrupted access
* No refresh tokens are provided - request a new token when needed

## Rate Limiting

* Standard endpoints: 100 requests per minute
* Financial endpoints: 20 requests per minute

## Common Error Codes

* 400: Bad Request - Invalid parameters or request format
* 401: Unauthorized - Missing or invalid API key
* 403: Forbidden - Insufficient permissions for the requested resource
* 404: Not Found - Resource doesn't exist
* 429: Too Many Requests - Rate limit exceeded
* 500: Internal Server Error - Please contact support