> For the complete documentation index, see [llms.txt](https://black-sheep-finance.gitbook.io/black-sheep-finance-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://black-sheep-finance.gitbook.io/black-sheep-finance-docs/rest-api/errors.md).

# Errors & status codes

All errors come back as:

```json
{ "error": "Human-readable message" }
```

with the appropriate HTTP status code.

## Standard codes

| Status      | Meaning               | When you see it                            |
| ----------- | --------------------- | ------------------------------------------ |
| 200         | OK                    | Success                                    |
| 400         | Bad Request           | Validation failed (Zod)                    |
| 401         | Unauthorized          | Missing / invalid bearer key               |
| 403         | Forbidden             | Blocked by policy                          |
| 404         | Not Found             | Wallet / agent / approval doesn't exist    |
| 409         | Conflict              | Insufficient funds, conflicting state      |
| 422         | Unprocessable Entity  | Recipient is the same as sender            |
| 429         | Too Many Requests     | Rate limit hit                             |
| 500         | Internal Server Error | Bug — please report with the request ID    |
| 502/503/504 | Gateway / Unavailable | Upstream Solana RPC or service degradation |

## Domain-specific errors

| Message                     | Status | Notes                                    |
| --------------------------- | ------ | ---------------------------------------- |
| `Blocked by policy`         | 403    | Check audit log for which rule fired     |
| `Wallet not found`          | 404    | Wrong ID or wrong account                |
| `Insufficient USDC`         | 409    | Top up the wallet                        |
| `Insufficient SOL for fee`  | 409    | Send a fraction of SOL to the wallet     |
| `Invalid recipient address` | 400    | Not valid base58 or wrong length         |
| `Amount must be positive`   | 400    | `amount <= 0`                            |
| `Approval already resolved` | 409    | Trying to approve an already-handled row |

## Debugging

Every response includes a `x-request-id` header. Include this when contacting support.


---

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