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

# Compliance Vectors

> The 8 non-negotiable baseline test cases.

To be considered a compliant implementation of the Stellar Address Kit, a package must pass these 8 critical "canary" vectors.

| Case                      | Why it matters                                                           |
| ------------------------- | ------------------------------------------------------------------------ |
| **2^53 + 1 Canary**       | Verifies that the implementation does not lose precision on large IDs.   |
| **uint64 Max**            | Ensures `18,446,744,073,709,551,615` is handled as a string.             |
| **uint64 Overflow**       | Confirms that IDs larger than 64-bit trigger an error.                   |
| **Lowercase Input**       | Verifies that addresses are normalized to uppercase in the output.       |
| **NOTANADDRESS**          | Ensures malformed strings return `INVALID_CHECKSUM`.                     |
| **Tampered Checksum**     | Confirms that modifying one character in an address triggers an error.   |
| **C-Address Destination** | Ensures contracts are flagged as `INVALID_DESTINATION` for routing.      |
| **Invariant Check**       | Verifies that if an error is present, all other result fields are empty. |