Constant "Bad Request" happening to me #10343

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1. Monkopedia

   added

   bugSomething isn't workingSomething isn't working

   on Feb 1, 2026
2. github-actions

   added

   CLIIssues related to the Codex CLIIssues related to the Codex CLI

   on Feb 1, 2026
3. etraut-openai commented on Feb 1, 2026

   

   etraut-openai

   on Feb 1, 2026

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   Based on the logs, I'm guessing that you've enabled a feature that is still under development and is not yet supported. Please review your config.toml.
4. atomical commented on Feb 3, 2026

   

   atomical

   on Feb 3, 2026

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   Would background terminal be one of those?
5. etraut-openai commented on Feb 3, 2026

   

   etraut-openai

   on Feb 3, 2026

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   Try renaming your config.toml file temporarily, then relaunch Codex and log in. Do you still see the "Bad Request" in that case?
6. atomical commented on Feb 3, 2026

   

   atomical

   on Feb 3, 2026

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   Yes. 019c200d-be63-7152-aa8b-2b084f20432a
7. Monkopedia commented on Feb 3, 2026

   

   Monkopedia

   on Feb 3, 2026

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   Sorry, I haven't been doing dev on the machine that was giving me these problems, will try again when I get a chance.
8. Monkopedia commented on Feb 4, 2026

   

   Monkopedia

   on Feb 4, 2026

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   This is no longer reproducing for me, sorry.
9. Monkopedia

   closed this as completedon Feb 4, 2026
10. pardeike commented on Feb 10, 2026

    

    pardeike

    on Feb 10, 2026

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    I am currently having this all the time. Every second request gets me a red {"detail":"Bad Request"} even requests that are rather short and do not require lots of tokens (as it looks to me at least). I cannot let codex run unattended for more than a few minutes just to come back at it stopped mid-flight.

    I am exclusively using codex 5.3 with xhigh thinking with my Pro account. I also told it to avoid parsing/sending large results but it happens at random times.

    here is my config

    model = "gpt-5.3-codex"
    model_reasoning_effort = "xhigh"
    
    approval_policy = "never"
    sandbox_mode = "danger-full-access"
    sandbox_workspace_write.network_access = true
    web_search = "live"
    features.shell_snapshot = true
    features.unified_exec = true
    features.steer = true
    features.collab = true
    model_verbosity = "high"
    history.persistence = "save-all"
    suppress_unstable_features_warning = true
    personality = "pragmatic"
    
    # [mcp_servers.gabs]
    # command = "gabs"
    # args = ["server"]
    
    [projects."/Users/ap"]
    trust_level = "trusted"
    
    [notice]
    hide_gpt5_1_migration_prompt = true
    "hide_gpt-5.1-codex-max_migration_prompt" = true
    
    [notice.model_migrations]
    "gpt-5.2" = "gpt-5.2-codex"
    

    👍React with 👍1Reacted by Christoph Michel
11. etraut-openai commented on Feb 10, 2026

    

    etraut-openai

    on Feb 10, 2026

    Last edited by etraut-openai

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    @pardeike, when you see this happen, please use the /feedback command to upload your logs and session details, then post the thread ID here.

    Edit: Sorry, I just saw your post in #10571. Thanks for uploading your details.