zat.dev
zzstoatzz.io
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MIT License
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Copyright (c) 2025 nate nowack
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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README.md
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README.md
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## install
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```bash
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zig fetch --save https://tangled.org/zzstoatzz.io/zat/archive/main
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zig fetch --save https://tangled.sh/zzstoatzz.io/zat/archive/main
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```
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then in `build.zig`:
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## what's here
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### string primitives
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parsing and validation for atproto string identifiers:
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<details>
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<summary><strong>string primitives</strong> - parsing and validation for atproto identifiers</summary>
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- **Tid** - timestamp identifiers (base32-sortable)
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- **Did** - decentralized identifiers
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}
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```
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### did resolution
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</details>
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resolve `did:plc` and `did:web` identifiers to their documents:
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<details>
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<summary><strong>did resolution</strong> - resolve did:plc and did:web to documents</summary>
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```zig
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var resolver = zat.DidResolver.init(allocator);
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const key = doc.signingKey(); // verification method
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```
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### handle resolution
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</details>
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resolve handles to DIDs via HTTP well-known:
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<details>
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<summary><strong>handle resolution</strong> - resolve handles to DIDs via HTTP well-known</summary>
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```zig
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var resolver = zat.HandleResolver.init(allocator);
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// did = "did:plc:z72i7hdynmk6r22z27h6tvur"
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```
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### xrpc client
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</details>
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call AT Protocol endpoints:
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<details>
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<summary><strong>xrpc client</strong> - call AT Protocol endpoints</summary>
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```zig
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var client = zat.XrpcClient.init(allocator, "https://bsky.social");
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}
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```
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### json helpers
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</details>
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navigate nested json without verbose if-chains:
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<details>
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<summary><strong>json helpers</strong> - navigate nested json without verbose if-chains</summary>
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```zig
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// runtime paths for one-offs:
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const post = try zat.json.extractAt(FeedPost, allocator, value, .{"post"});
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```
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### jwt verification
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</details>
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verify service auth tokens:
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<details>
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<summary><strong>jwt verification</strong> - verify service auth tokens</summary>
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```zig
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var jwt = try zat.Jwt.parse(allocator, token_string);
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supports ES256 (P-256) and ES256K (secp256k1) signing algorithms.
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### multibase decoding
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</details>
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decode public keys from DID documents:
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<details>
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<summary><strong>multibase decoding</strong> - decode public keys from DID documents</summary>
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```zig
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const key_bytes = try zat.multibase.decode(allocator, "zQ3sh...");
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// parsed.raw: 33-byte compressed public key
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```
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</details>
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## specs
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validation follows [atproto.com/specs](https://atproto.com/specs/atp).
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## license
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MIT