wrangler-4-121-0-6-b

Question

Does Wrangler respect DO_NOT_TRACK=1?

Answer key

A correct answer says

Setting `DO_NOT_TRACK=1` turns off Wrangler telemetry, regardless of other telemetry settings.

The stale answer

Wrangler ignores DO_NOT_TRACK; you must run `wrangler telemetry disable` or set WRANGLER_SEND_METRICS=false.

The change's lesson

Answer

Yes. Wrangler's telemetry docs (`packages/wrangler/telemetry.md` in cloudflare/workers-sdk) say Wrangler honors `DO_NOT_TRACK`. Setting it to `1` turns telemetry off, and it overrides every other telemetry setting. The other ways to turn it off are `npx wrangler telemetry disable`, `send_metrics = false` in `wrangler.toml`, or `WRANGLER_SEND_METRICS=false`. Older Wrangler versions may not support `DO_NOT_TRACK`, so on an old release, `WRANGLER_SEND_METRICS=false` is the safer choice.

Answering cost $0.08.

Grade

correct

The judge's reason: It says DO_NOT_TRACK=1 disables telemetry and overrides all other settings; it only points to older versions for the alternative methods and does not present the stale behavior as current.

The judge's log

Session log

What the agent wrote, the tools it called, and what they returned, from docs/bench/2026-10-11-done3/runs/B-project/wrangler-4-121-0-6-b.jsonl. Thinking and the session's settings are left out. The raw log

1. Tool call: ToolSearch

   {
     "query": "select:WebFetch",
     "max_results": 1
   }

2. Tool output

   {"type":"tool_reference","tool_name":"WebFetch"}

3. Tool call: WebFetch

   {
     "url": "https://raw.githubusercontent.com/cloudflare/workers-sdk/main/packages/wrangler/telemetry.md",
     "prompt": "How can telemetry be disabled? Is DO_NOT_TRACK mentioned? Quote the relevant lines."
   }

4. Tool output

   Yes, `DO_NOT_TRACK` is mentioned. Telemetry can be disabled in four ways:
   
   1. **CLI command:** "If you would like to disable telemetry, you can run:" followed by `npx wrangler telemetry disable`.
   2. **Per-project config:** Add `send_metrics=false` to the project's wrangler.toml file.
   3. **Environment variable:** Set `WRANGLER_SEND_METRICS=false`. The page introduces this with "Alternatively, you may set an environment variable to disable telemetry."
   4. **`DO_NOT_TRACK`:** "Wrangler also honors the `DO_NOT_TRACK` environment variable. Set it to `1` to disable telemetry:" The page adds that "`DO_NOT_TRACK=1` takes precedence over all other telemetry settings."

5. Agent

   Yes. Wrangler's telemetry docs (`packages/wrangler/telemetry.md` in cloudflare/workers-sdk) say Wrangler honors `DO_NOT_TRACK`. Setting it to `1` turns telemetry off, and it overrides every other telemetry setting. The other ways to turn it off are `npx wrangler telemetry disable`, `send_metrics = false` in `wrangler.toml`, or `WRANGLER_SEND_METRICS=false`. Older Wrangler versions may not support `DO_NOT_TRACK`, so on an old release, `WRANGLER_SEND_METRICS=false` is the safer choice.