From 22128cb61a88dcf515d411335a07c20cdae027f0 Mon Sep 17 00:00:00 2001
From: Ankit Soni <dev@ankitson.com>
Date: Mon, 13 Jul 2026 20:27:48 -0700
Subject: [PATCH] bifrost: disable compat parameter dropping

---
 config/bifrost.config.json.tmpl |  8 +++++++-
 docs/CHANGELOG.md               | 13 +++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/config/bifrost.config.json.tmpl b/config/bifrost.config.json.tmpl
index 787a63a..bd0cf38 100644
--- a/config/bifrost.config.json.tmpl
+++ b/config/bifrost.config.json.tmpl
@@ -3,7 +3,13 @@
 
   "client": {
     "drop_excess_requests": false,
-    "prometheus_labels": ["model", "provider"]
+    "prometheus_labels": ["model", "provider"],
+    "compat": {
+      "convert_text_to_chat": true,
+      "convert_chat_to_responses": true,
+      "should_drop_params": false,
+      "should_convert_params": true
+    }
   },
 
   "config_store": {
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index fa9e530..f6838ca 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -3,6 +3,19 @@
 Top-level changelog. Sub-projects keep their own detailed changelogs; link them
 here.
 
+## 2026-07-14
+
+### Bifrost: disable global compat parameter dropping
+
+- Set `client.compat.should_drop_params: false` in the rendered Bifrost config
+  so Bifrost stops silently deleting request fields absent from model-catalog
+  allowlists.
+- This is global for the Bifrost instance, not codex-specific; configured
+  providers such as `openrouter`, `anthropic`, `openai`, `codex`, `nvidia`,
+  `deepseek`, `nanogpt`, `unsloth`, `lmstudio`, `ollama`, `speaches`,
+  `audiocpp`, `nemotron-asr`, and `parakeet-asr` may now receive parameters
+  Bifrost previously dropped.
+
 ## Data pipelines
 Garmin / banking / Playnite / AoE4-replay / X-bookmarks pipelines on Dagster
 (+ DBOS / Restate experiments). Full detail: