awesome-muse-spark

Tools and unofficial knowledge base / resources for Meta's Muse Spark LLM

Codex Tool-Calling, and "missing required field id"

First issue I ran into getting Muse Spark 1.1 working with Codex after following their guide at https://dev.meta.ai/docs/guides/coding-agents (seems non-public so not sharing its contents here): tool-calling for anything besides the server-side tools didn't seem to work.

What it looks like in Codex. The first turn works — the model runs a web
search and even executes a shell command — but every turn after a search dies
identically, so the session is effectively bricked once it searches once:

$ codex exec "search the web for <query>, then run: echo OK"
OpenAI Codex v0.144.0
--------
model: muse-spark-1.1
provider: meta
--------
warning: Model metadata for `muse-spark-1.1` not found. Defaulting to fallback metadata; this can degrade performance and cause issues.

codex
web search: <query>
exec
  /bin/bash -lc 'echo OK'
  succeeded in 0ms:
  OK

web search: <query>
web search: <query>
ERROR: {"error":{"code":null,"message":"`input[6]` missing required field `id`","param":"input[6]","type":"invalid_request_error"}}

Root cause. It isn't your tools config — the web_search tool is injected
server-side, and the failure is in how history is replayed. The Responses
API requires an id on a replayed web_search_call item, but Codex strips
server-assigned ids when it rebuilds the input array for the next turn. So the
second request carries an id-less web_search_call and gets rejected — and since
that item stays in history, every subsequent turn fails the same way.

You can see it straight against the raw API, no Codex involved:

# Replay a web_search_call WITHOUT an id  ->  400
$ curl -s https://api.meta.ai/v1/responses \
    -H "Authorization: Bearer $MODEL_API_KEY" -H 'Content-Type: application/json' \
    -d '{"model":"muse-spark-1.1","input":[
          {"type":"message","role":"user","content":[{"type":"input_text","text":"hi"}]},
          {"type":"web_search_call","status":"completed","action":{"type":"search","query":"x"}},
          {"type":"message","role":"user","content":[{"type":"input_text","text":"continue"}]}
        ]}'
{"error":{"code":null,"message":"`input[1]