What
In Anthropic cloud sessions (where CLAUDE_CODE_REMOTE is set), Claude Code records which MCP servers were set up at launch. MCP servers are outside tools Claude can connect to. Now:
- A server's address is no longer recorded when its headers hold values that look like credentials.
- Claude Code also records each server's origin, the scheme and host part of the address.
- Parts of an address that look secret, such as long unique IDs,
sk-keys and mixed-case tokens, are detected.
Before, the full address was always recorded under the same conditions.
Why
It lowers the chance of passwords or keys ending up in launch records.
Names in the bundleCLAUDE_CODE_REMOTE
Documented inclaude-code/agent-sdk/typescript