README.md

@@ -163,17 +163,6 @@ The log captures the request (model id, body byte length), each HTTP attempt (st
 wait, elapsed ms), every stream event payload, and the terminal finish reason + usage. It is
 useful for diagnosing model selection, retry, tool-call, and finish-reason issues.
 
-## ZDR header toggle
-
-The `x-cmd-zdr: 1` request header is **omitted by default** because it is rejected by some
-models. Set `COMMANDCODE_ZDR=1` (or `true`/`yes`) when launching opencode to opt back in. The
-value is read once at provider load, so restart opencode after changing it. Per-provider
-overrides still win: `headers: { "x-cmd-zdr": "..." }` in `opencode.json` takes precedence over
-the environment variable.
-
-With `COMMANDCODE_DEBUG` enabled, the trace logs a `zdr on|off` line per request so the toggle
-state is observable.
-
 ## Features
 
 | Capability | Status |

src/model.ts

@@ -23,10 +23,6 @@ import { redact } from "./redact.js";
 import { transform } from "./transform.js";
 import { finishReasonFrom, usageFromFinish, type FinishEvent } from "./usage.js";
 
-// x-cmd-zdr breaks some models; off by default (server.py never sends it).
-// COMMANDCODE_ZDR=1|true|yes opts back in. Read at load, like COMMANDCODE_DEBUG.
-const ZDR_ENABLED = /^(1|true|yes)$/i.test(process.env["COMMANDCODE_ZDR"] ?? "");
-
 export type CommandCodeOptions = {
   name?: string;
   apiKey?: string;
@@ -143,10 +139,8 @@ class CommandCodeLanguageModel implements LanguageModelV3 {
       "x-project-slug": "project",
       "x-taste-learning": "true",
       "x-co-flag": "false",
-      ...(ZDR_ENABLED ? { "x-cmd-zdr": "1" } : {}),
       ...this.opts.headers,
     };
-    debug("fetch", "zdr", ZDR_ENABLED ? "on" : "off");
     const auth = bearer(this.opts.apiKey);
     if (auth) headers["Authorization"] = auth;
     for (const [k, v] of Object.entries(extra ?? {})) if (v !== undefined) headers[k] = v;