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# ~/.claude/hooks/anonymize-prompt.py
import sys, json, requests, os

data = json.load(sys.stdin)
prompt = data.get("prompt", "")
key = os.environ.get("ANONYM_API_KEY", "")

resp = requests.post("https://anonym.legal/api/mcp/anonymize",
    headers={"Authorization": f"Bearer {key}"},
    json={"text": prompt, "language": "en", "mode": "tokenize"})

if resp.ok:
    result = resp.json()
    data["prompt"] = result["anonymized_text"]
    data["session_id"] = result["session_id"]

print(json.dumps(data))

# ~/.claude/hooks/deanonymize-response.py
import sys, json, requests, os

data = json.load(sys.stdin)
response = data.get("response", "")
session_id = data.get("session_id", "")
key = os.environ.get("ANONYM_API_KEY", "")

if session_id:
    resp = requests.post("https://anonym.legal/api/mcp/detokenize",
        headers={"Authorization": f"Bearer {key}"},
        json={"text": response, "session_id": session_id})
    if resp.ok:
        data["response"] = resp.json().get("detokenized_text", response)

print(json.dumps(data))

// ~/.claude/settings.json
{
  "hooks": {
    "UserPromptSubmit": [
      {
        "hooks": [{"type": "command",
          "command": "python3 ~/.claude/hooks/anonymize-prompt.py"}]
      }
    ],
    "Stop": [
      {
        "hooks": [{"type": "command",
          "command": "python3 ~/.claude/hooks/deanonymize-response.py"}]
      }
    ]
  }
}