The web-fetch agent needs CLAUDE_CODE_WEB_FETCH_AGENT or tengu_clever_orbit plus a capability, and the flag defaults off.
Instead of calling the WebFetch tool directly, Claude Code can hand fetches to a dedicated built-in agent. It is off unless CLAUDE_CODE_WEB_FETCH_AGENT is set or the tengu_clever_orbit server flag turns it on, and it additionally needs the allow_web_fetch capability, a non-coordinator session, CLAUDE_CODE_SIMPLE unset, and a subagent depth below the limit. The server flag defaults to off.
- When active, a hook that denies a fetch gets extra guidance explaining that web pages can only be fetched through that agent.
- Structured output from the subagent can carry a record of files the harness saved from the fetch.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
tengu_clever_orbit Off in both readingsThe flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.
This account: off · anonymous baseline: off · compiled default in v2.1.232: off
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.
Read once, for one account on one subscription tier, against v2.1.232. It isn't a statement about your account. What a flag value here can and cannot tell you
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
If you start Claude Code in [bare mode](/docs/en/headless#start-faster-with-bare-mode), by passing `--bare` or setting `CLAUDE_CODE_SIMPLE=1`, recording stays off unless you pass `--system-prompt-snapshot on`. Before v2.1.268, sessions tha…cli-reference see the edit
If you start Claude Code in [bare mode](/docs/en/headless#start-faster-with-bare-mode) by passing `--bare` through `extraArgs` or setting `CLAUDE_CODE_SIMPLE=1`, recording stays off unless you set `snapshot: true` on the object form of `sy…agent-sdk/modifying-system-prompts see the edit
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Anthropic's documentation has since written up CLAUDE_CODE_SIMPLE, on Modifying system prompts.
New in this build: CLAUDE_CODE_WEB_FETCH_AGENT