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Getting invalid_request_body when using GitHub Copilot Chat #57776

Closed
Bug
#57958
Closed
Getting invalid_request_body when using GitHub Copilot Chat#57776
Bug
#57958
Labels
area:aiRelated to Agent Panel, Edit Prediction, Copilot, or other AI featuresfrequency:commonBugs that happen for at least a third of the users across all platforms and kinds of usagepriority:P1Security holes w/o exploit, crash, install/update, sign-in, badly broken common featuresstate:reproducibleVerified steps to reproduce included and someone on the team managed to reproduce
@BrendanThompson

Description

@BrendanThompson
BrendanThompson
opened on May 27, 2026

Reproduction steps

  1. Open Agent thread
  2. Select any GitHub Copilot model
  3. Make a Write request

Current vs. Expected behavior

Current

I get the following error:

Failed to connect to API: 400 Bad Request {"error":{"message":"","code":"invalid_request_body"}}

Expected

Complete the request

Zed version and system specs

Zed: v1.4.2+preview.290.29542ace02a1b17b6805fd0b9674a8154360feb6 (Zed Preview)
OS: macOS 26.5
Memory: 128 GiB
Architecture: aarch64

Attach Zed log file

Zed.log 
2026-05-27T13:53:51+10:00 ERROR [agent] Failed to authenticate provider: ChatGPT Subscription: Sign in with your ChatGPT Plus or Pro subscription to use this provider.
2026-05-27T13:53:53+10:00 INFO  [git::repository] opening git repository at "/Users/brendanthompson/.dotfiles/oh-my-zsh/.git" using git binary "/opt/homebrew/bin/git"
2026-05-27T13:53:53+10:00 INFO  [git::repository] opening git repository at "/Users/brendanthompson/.dotfiles/.git" using git binary "/opt/homebrew/bin/git"
2026-05-27T13:53:53+10:00 INFO  [lsp] starting language server process. binary path: "/Users/brendanthompson/Library/Application Support/Zed/extensions/work/typos/typos-lsp-v0.1.52/typos-lsp", working directory: "/Users/brendanthompson/.dotfiles", args: []
2026-05-27T13:54:03+10:00 INFO  [project::lsp_store] stopping language server typos
2026-05-27T13:55:03+10:00 INFO  [lsp] starting language server process. binary path: "/Users/brendanthompson/Library/Application Support/Zed/extensions/work/typos/typos-lsp-v0.1.52/typos-lsp", working directory: "/Users/brendanthompson/.dotfiles", args: []
2026-05-27T13:55:03+10:00 INFO  [agent] Received prompt request for session: afa9f2e2-db30-4171-b07c-8fc0105433b3
2026-05-27T13:55:03+10:00 INFO  [agent::thread] Thread::send called with model: GPT-5.4
2026-05-27T13:55:04+10:00 INFO  [lsp] starting language server process. binary path: "/Users/brendanthompson/.nvm/versions/node/v23.0.0/bin/node", working directory: "/Users/brendanthompson/.dotfiles", args: ["/Users/brendanthompson/Library/Application Support/Zed/languages/json-language-server/node_modules/vscode-langservers-extracted/bin/vscode-json-language-server", "--stdio"]
2026-05-27T13:55:04+10:00 INFO  [language] found user-installed language server for ruff. path: "/opt/homebrew/bin/ruff", arguments: ["server"]
2026-05-27T13:55:38+10:00 ERROR [agent::thread] Turn execution failed: Failed to connect to API: 400 Bad Request {"error":{"message":"","code":"invalid_request_body"}}

2026-05-27T13:55:38+10:00 ERROR [agent] Error in model response stream: Failed to connect to API: 400 Bad Request {"error":{"message":"","code":"invalid_request_body"}}

2026-05-27T13:55:38+10:00 ERROR [acp_thread] Error in run turn: Failed to connect to API: 400 Bad Request {"error":{"message":"","code":"invalid_request_body"}}

Relevant Zed settings

settings.json 
{
  "language_models": {
    "openai_compatible": {
      "Cerebras": {
        "api_url": "https://api.cerebras.ai/v1",
        "available_models": [
          {
            "name": "llama-3.3-70b",
            "max_tokens": 200000,
            "max_output_tokens": 32000,
            "max_completion_tokens": 200000,
            "capabilities": {
              "tools": true,
              "images": false,
              "parallel_tool_calls": false,
              "prompt_cache_key": false,
            },
          },
        ],
      },
    },
  },
  "context_servers": {
    "cupertino": {
      "enabled": true,
      "command": "/opt/homebrew/bin/cupertino",
      "args": ["serve"],
    },
  },
  "agent": {
    "inline_assistant_model": {
      "provider": "copilot_chat",
      "model": "gpt-5.4",
      "enable_thinking": false,
    },
    "favorite_models": [
      {
        "provider": "copilot_chat",
        "model": "gpt-5.4",
        "enable_thinking": true,
      },
    ],
    "commit_message_model": {
      "provider": "copilot_chat",
      "model": "GPT-5.4",
    },
    "tool_permissions": {
      "tools": {
        "terminal": {
          "always_allow": [
            {
              "pattern": "^swift\\s+(build|test|run|package)"
            },
            {
              "pattern": "^npm\\s+(install|test|run|build)"
            },
            {
              "pattern": "^git\\s+(status|log|diff|branch)"
            },
            {
              "pattern": "^ls\\b"
            },
            {
              "pattern": "^cat\\s"
            },
            {
              "pattern": "^tail\\s"
            },
            {
              "pattern": "^head\\s"
            },
            {
              "pattern": "^grep\\s"
            },
            {
              "pattern": "^wc\\s"
            }
          ],
          "always_deny": [{ "pattern": "rm\\s+-rf\\s+(/|~)" }, { "pattern": "sudo\\s+" }],
        },
        "edit_file": {
          "always_deny": [
            { "pattern": "\\.env" },
            { "pattern": "secrets?/" },
            { "pattern": "\\.(pem|key)$" },
          ],
          "always_allow": [
            { "pattern": "\\.(md|txt|json)$" },
            { "pattern": "\\.(swift)$" },
            { "pattern": "\\.(go)$" },
            { "pattern": "\\.(tf)$" },
          ],
        },
        "fetch": {
          "always_allow": [
            {
              "pattern": "github\\.com"
            },
            {
              "pattern": "apple\\.com"
            },
            {
              "pattern": "swiftpackageindex\\.com"
            },
            {
              "pattern": "raw\\.githubusercontent\\.com"
            }
          ],
        },
        "mcp:cupertino:read_sample": {
          "default": "allow",
        },
        "mcp:cupertino:read_document": {
          "default": "allow",
        },
        "mcp:cupertino:search": {
          "default": "allow",
        },
      },
    },
    "default_model": {
      "effort": "high",
      "enable_thinking": true,
      "provider": "copilot_chat",
      "model": "gpt-5.4",
    },
    "button": false,
    "default_profile": "ask",
    "model_parameters": [],
    "default_width": 600,
    "show_turn_stats": true,
    "notify_when_agent_waiting": "all_screens",
    "sidebar_side": "right",
    "enable_feedback": false,
    "dock": "right",
  },
  "debugger": {
    "button": false,
  },
  "search": {
    "button": false,
  },
  "terminal": {
    "button": false,
    "dock": "bottom",
    "font_family": "BerkeleyMono Nerd Font Mono",
    "default_width": 600,
  },
  "collaboration_panel": {
    "button": false,
    "dock": "left",
    "default_width": 600,
  },
  "outline_panel": {
    "button": false,
    "dock": "left",
    "default_width": 600,
  },
  "git_panel": {
    "tree_view": false,
    "button": false,
    "dock": "left",
    "default_width": 600,
  },
  "project_panel": {
    "button": false,
    "dock": "left",
    "default_width": 600,
  },
  "close_panel_on_toggle": true,
  "global_lsp_settings": {
    "button": false,
  },
  "vim_mode": true,
  "vim": {
    "use_system_clipboard": "never",
  },
  "indent_guides": {
    "enabled": true,
    "coloring": "indent_aware",
    "background_coloring": "disabled",
  },
  "relative_line_numbers": "enabled",
  "telemetry": {
    "diagnostics": false,
    "metrics": false,
  },
  "autosave": "on_focus_change",
  "theme": {
    "mode": "system",
    "light": "Warm Burnout Light",
    "dark": "Warm Burnout Dark",
  },
  "theme_overrides": {
    "Tokyo Night Light": {
      "vim.normal.background": "#2563eb",
      "vim.normal.foreground": "#eff6ff",
      "vim.insert.background": "#059669",
      "vim.insert.foreground": "#ecfdf5",
      "vim.replace.background": "#dc2626",
      "vim.replace.foreground": "#fef2f2",
      "vim.visual.background": "#a855f7",
      "vim.visual.foreground": "#faf5ff",
      "vim.visual_block.background": "#a855f7",
      "vim.visual_block.foreground": "#faf5ff",
      "vim.visual_line.background": "#a855f7",
      "vim.visual_line.foreground": "#faf5ff",
      "vim.helix_jump_label.foreground": "#2563eb",
    },
    "Tokyo Night Storm": {
      "vim.normal.foreground": "#2563eb",
      "vim.normal.background": "#eff6ff",
      "vim.insert.foreground": "#059669",
      "vim.insert.background": "#ecfdf5",
      "vim.replace.foreground": "#dc2626",
      "vim.replace.background": "#fef2f2",
      "vim.visual.foreground": "#a855f7",
      "vim.visual.background": "#faf5ff",
      "vim.visual_block.foreground": "#a855f7",
      "vim.visual_block.background": "#faf5ff",
      "vim.visual_line.foreground": "#a855f7",
      "vim.visual_line.background": "#faf5ff",
      "vim.helix_jump_label.foreground": "#2563eb",
    },
    "Warm Burnout Light": {
      "vim.normal.background": "#2563eb",
      "vim.normal.foreground": "#eff6ff",
      "vim.insert.background": "#059669",
      "vim.insert.foreground": "#ecfdf5",
      "vim.replace.background": "#dc2626",
      "vim.replace.foreground": "#fef2f2",
      "vim.visual.background": "#a855f7",
      "vim.visual.foreground": "#faf5ff",
      "vim.visual_block.background": "#a855f7",
      "vim.visual_block.foreground": "#faf5ff",
      "vim.visual_line.background": "#a855f7",
      "vim.visual_line.foreground": "#faf5ff",
      "vim.helix_jump_label.foreground": "#2563eb",
    },
    "Warm Burnout Dark": {
      "vim.normal.foreground": "#2563eb",
      "vim.normal.background": "#eff6ff",
      "vim.insert.foreground": "#059669",
      "vim.insert.background": "#ecfdf5",
      "vim.replace.foreground": "#dc2626",
      "vim.replace.background": "#fef2f2",
      "vim.visual.foreground": "#a855f7",
      "vim.visual.background": "#faf5ff",
      "vim.visual_block.foreground": "#a855f7",
      "vim.visual_block.background": "#faf5ff",
      "vim.visual_line.foreground": "#a855f7",
      "vim.visual_line.background": "#faf5ff",
      "vim.helix_jump_label.foreground": "#2563eb",
    },
  },
  "experimental.theme_overrides": {
    "syntax": {
      "constant.comment.todo": {
        "color": "#4078f2ff",
      },
      "string.comment.info": {
        "color": "#50a14fff",
      },
      "keyword.comment.warn": {
        "color": "#c18401ff",
      },
      "property.comment.error": {
        "color": "#ca1243ff",
      },
      "emphasis.comment.user": {
        "color": "#000000dd",
      },
    },
  },
  "icon_theme": "Bearded Icon Theme",
  "ui_font_size": 18,
  "ui_font_family": "BerkeleyMono Nerd Font Mono",
  "buffer_font_size": 18,
  "buffer_font_family": "BerkeleyMono Nerd Font Mono",
  "edit_predictions": {
    "allow_data_collection": "no",
    "mode": "subtle",
  },
  "lsp": {
    "terraform-ls": {
      "initialization_options": {
        "experimentalFeatures": {
          "prefillRequiredFields": true,
        },
        "validation": {
          "enableEnhancedValidation": true,
        },
      },
    },
    "typos": {
      "initialization_options": {
        "config": "~/.dotfiles/zed/typos.toml",
        "diagnosticSeverity": "Information",
      },
    },
    "tailwindcss-language-server": {
      "settings": {
        "includeLanguages": {
          "gohtml": "html",
        },
        "experimental": {
          "classRegex": ["class=\"([^\"]*)\"", "className=\"([^\"]*)\""],
        },
      },
    },
  },
  // Extensions
  "auto_install_extensions": {
    "astro": true,
    "bearded-icon-theme": true,
    "bicep": true,
    "cue": true,
    "dockerfile": true,
    "git-firely": true,
    "helm": true,
    "html": true,
    "ini": true,
    "lua": true,
    "make": true,
    "mermaid": true,
    "rego": true,
    "sql": true,
    "ssh-config": true,
    "swift": true,
    "tailwind-theme": true,
    "terraform": true,
    "tokyo-night": true,
    "toml": true,
    "tree-sitter-query": true,
    "typos": true,
    "log": true,
    "xml": true,
  },
  "restore_on_startup": "launchpad",
  "restore_on_file_reopen": false,
  "soft_wrap": "bounded",
  "cursor_shape": "hollow",
  "tab_bar": {
    "show": false,
    "show_tab_bar_buttons": false,
    "show_nav_history_buttons": false,
  },
  "tabs": {
    "show_diagnostics": "all",
    "activate_on_close": "neighbour",
    "git_status": true,
    "file_icons": true,
  },
  "title_bar": {
    "show_branch_status_icon": true,
    "show_sign_in": false,
    "show_user_picture": false,
    "show_menus": false,
  },
  "file_types": {
    "Dockerfile": ["Dockerfile", "Dockerfile.*"],
    "Git Attributes": ["{git,.git,.git/info}/attributes"],
    "Git Config": ["{git,.git/modules,.git/modules/*}/config"],
    "Git Ignore": ["{git,.git}/ignore", ".git/info/exclude"],
    // "HTML": ["*.gohtml"],
    "JSON": ["json", "*.code-snippets"],
    "JSONC": ["jsonc", "hujson"],
    "Ruby": ["Brewfile.personal", "Brewfile.work"],
    "Shell Script": ["*xcrc"],
    "SSH Config": ["**/*ssh/config"],
  },
  "toolbar": {
    "quick_actions": false,
    "breadcrumbs": true,
  },
  "formatter": "auto",
  "preferred_line_length": 100,
  "show_wrap_guides": true,
  "wrap_guides": [100],
  "inlay_hints": {
    "enabled": true,
    "show_type_hints": true,
    "show_parameter_hints": true,
    "show_other_hints": true,
  },
  "max_tabs": 1,
  "remove_trailing_whitespace_on_save": true,
  "ensure_final_newline_on_save": true,
  "diagnostics_max_severity": "hint",
  "diagnostics": {
    "button": true,
    "include_warnings": true,
    "lsp_pull_diagnostics": {
      "enabled": true,
      "debounce_ms": 50,
    },
    "inline": {
      "enabled": true,
      "update_debounce_ms": 150,
      "padding": 4,
      "min_column": 0,
      "max_severity": "all",
    },
  },
  "git": {
    "git_gutter": "tracked_files",
    "inline_blame": {
      "enabled": true,
      "show_commit_summary": true,
    },
  },
  "languages": {
    "Swift": {
      "enable_language_server": true,
      "debuggers": ["lldb"],
      "language_servers": ["sourcekit-lsp", "package-swift-lsp"],
      "formatter": {
        "external": {
          "command": "swiftformat",
          "arguments": ["stdin", "--stdinpath", "{buffer_path}"],
        },
      },
      "format_on_save": "on",
      "tab_size": 2,
    },
    "Mustache": {
      "formatter": "prettier",
    },
    "Python": {
      "language_servers": ["ty", "!basedpyright"],
      "code_actions_on_format": {
        "source.organizeImports.ruff": true,
      },
      "formatter": {
        "language_server": {
          "name": "ruff",
        },
      },
    },
    "Go HTML Template": {
      "language_servers": [
        "tailwindcss-language-server",
        "vscode-html-language-server",
        "emmet-language-server",
        "...",
      ],
    },
    "Terraform": {
      "language_servers": ["terraform-ls", "ms-terraform-lsp"],
    },
  },
  "hide_mouse": "on_typing_and_action",
  "scrollbar": {
    "show": "never",
  },
  "file_scan_exclusions": [
    "**/.git",
    "**/.svn",
    "**/.hg",
    "**/CVS",
    "**/.DS_Store",
    "**/Thumbs.db",
    "**/.classpath",
    "**/.settings",
    "**/out",
    "**/dist",
    "**/.husky",
    "**/.turbo",
    "**/.vscode-test",
    "**/.vscode",
    "**/.next",
    "**/.storybook",
    "**/.tap",
    "**/.nyc_output",
    "**/.terraform",
    "**/node_modules",
    "**/vendor",
    "**/.build",
    "**/*.xcodeproj",
    "**/*.playground",
  ],
  "calls": {
    "mute_on_join": true,
  },
  "file_finder": {
    "modal_max_width": "medium",
  },
  "base_keymap": null,
  "auto_signature_help": true,
  "auto_update": true,
  "show_signature_help_after_edits": true,
  "use_system_path_prompts": false,
  "use_system_prompts": true,
  "resize_all_panels_in_dock": ["left", "right", "bottom"],
  "redact_private_values": true,
  "preview_tabs": {
    "enabled": true,
    "enable_keep_preview_on_code_navigation": true,
    "enable_preview_from_file_finder": true,
  },
  "status_bar": {
    "cursor_position_button": false,
  },
  "cli_default_open_behavior": "new_window",
  "completion_menu_item_kind": "symbol",
  "profiles": {
    "AI Disabled": {
      "settings": {
        "agent": {
          "enabled": false,
        },
      },
    },
  },
  "code_lens": "on",
}

Relevant Keymap

keymap.json 




(for AI issues) Model provider details


    

  • Provider: Copilot Chat
    • 

  • Model Name: GPT-5.4
    • 

  • Mode: Agent Panel
    • 



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    area:aiRelated to Agent Panel, Edit Prediction, Copilot, or other AI featuresfrequency:commonBugs that happen for at least a third of the users across all platforms and kinds of usagepriority:P1Security holes w/o exploit, crash, install/update, sign-in, badly broken common featuresstate:reproducibleVerified steps to reproduce included and someone on the team managed to reproduce
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