# AT Protocol Compliance Report

**Generated:** 2026-01-01T22:04:38Z  
**Repository:** [https://github.com/gdiazlo/atproto](https://github.com/gdiazlo/atproto)  

## Summary

| Metric | Value |
| ------ | ----- |
| Total Tests | 494 |
| Passed | 494 |
| Failed | 0 |
| Pass Rate | 100.0% |

**Status:** ✅ 494/494 tests passing

## Syntax Validation

📖 [Specification](https://atproto.com/specs/lexicon#string-formats)

✅ **448/448** tests passing (100.0%)

| Category | Fixture | Passed | Failed | Status |
| -------- | ------- | ------ | ------ | ------ |
| Handle | `handle_syntax_valid.txt, handle_syntax_invalid.txt` | 119 | 0 | ✅ |
| DID | `did_syntax_valid.txt, did_syntax_invalid.txt` | 42 | 0 | ✅ |
| NSID | `nsid_syntax_valid.txt, nsid_syntax_invalid.txt` | 52 | 0 | ✅ |
| TID | `tid_syntax_valid.txt, tid_syntax_invalid.txt` | 13 | 0 | ✅ |
| Record Key | `recordkey_syntax_valid.txt, recordkey_syntax_invalid.txt` | 27 | 0 | ✅ |
| AT-URI | `aturi_syntax_valid.txt, aturi_syntax_invalid.txt` | 95 | 0 | ✅ |
| Datetime | `datetime_syntax_valid.txt, datetime_syntax_invalid.txt` | 79 | 0 | ✅ |
| Language | `language_syntax_valid.txt, language_syntax_invalid.txt` | 21 | 0 | ✅ |

## Cryptography

📖 [Specification](https://atproto.com/specs/cryptography)

✅ **12/12** tests passing (100.0%)

| Category | Fixture | Passed | Failed | Status |
| -------- | ------- | ------ | ------ | ------ |
| Signature Verification | `signature-fixtures.json` | 6 | 0 | ✅ |
| P-256 did:key | `w3c_didkey_P256.json` | 1 | 0 | ✅ |
| K-256 did:key | `w3c_didkey_K256.json` | 5 | 0 | ✅ |

## Data Model (IPLD)

📖 [Specification](https://atproto.com/specs/data-model)

✅ **21/21** tests passing (100.0%)

| Category | Fixture | Passed | Failed | Status |
| -------- | ------- | ------ | ------ | ------ |
| DAG-CBOR/CID | `data-model-fixtures.json` | 3 | 0 | ✅ |
| CID Syntax | `cid_syntax_valid.txt, cid_syntax_invalid.txt` | 18 | 0 | ✅ |

## Merkle Search Tree (MST)

📖 [Specification](https://atproto.com/specs/repository#mst-structure)

✅ **13/13** tests passing (100.0%)

| Category | Fixture | Passed | Failed | Status |
| -------- | ------- | ------ | ------ | ------ |
| Key Heights | `key_heights.json` | 0 | 0 | ✅ |
| Common Prefix | `common_prefix.json` | 13 | 0 | ✅ |

---

This report is generated from the official [AT Protocol Interoperability Tests](https://github.com/bluesky-social/atproto-interop-tests).