diff --git a/AI-DECLARATION.md b/AI-DECLARATION.md
new file mode 100644
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--- /dev/null
+++ b/AI-DECLARATION.md
@@ -0,0 +1,17 @@
+---
+version: "0.1.2"
+level: copilot
+processes:
+  design: assist
+  implementation: copilot
+  testing: copilot
+  documentation: copilot
+  review: copilot
+  deployment: assist
+---
+
+This format is based on [AI-DECLARATION.md](https://ai-declaration.md/en/0.1.2).
+
+## Notes
+
+- 
diff --git a/README.md b/README.md
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 # 文 fumi
 
-[![License: Apache-2.0](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](LICENSE) [![AI-DECLARATION: auto](https://img.shields.io/badge/%E4%B7%BC%20AI--DECLARATION-auto-ede9fe?labelColor=ede9fe)](https://ai-declaration.md)
+[![License: Apache-2.0](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](LICENSE) [![AI-DECLARATION: copilot](https://img.shields.io/badge/䷼%20AI--DECLARATION-copilot-fee2e2?labelColor=fee2e2)](https://ai-declaration.md)
 
 A Rust client for [Smol Mail](https://code.randogoth.com/randogoth/smolmail): a minimalist, end-to-end encrypted mail protocol over a Noise-secured TCP connection. `fumi` derives an identity from one 32-byte master secret, seals and opens mail, and talks to a mailbox; it is the counterpart to [bunshin](https://code.randogoth.com/randogoth/bunshin), the server.