{
  "initial": [
    {
      "name": "ask_user_question",
      "description": "Ask the user a concise question when you need confirmation, a choice, or missing information before proceeding. Send one or more questions, each with a stable id that will be echoed in the answer.",
      "parameters": {
        "type": "object",
        "properties": {
          "questions": {
            "type": "array",
            "description": "Questions to ask the user before continuing.",
            "items": {
              "type": "object",
              "properties": {
                "id": {
                  "type": "string",
                  "description": "Stable id for this question; echoed in the answer."
                },
                "question": {
                  "type": "string",
                  "description": "The specific question to ask the user."
                },
                "header": {
                  "type": "string",
                  "description": "Optional short heading for the question, such as \"Confirm\" or \"Choose Mode\"."
                },
                "options": {
                  "type": "array",
                  "description": "Optional choices to show the user. If you recommend one, put it first and append \"(Recommended)\" to that label.",
                  "items": {
                    "type": "object",
                    "properties": {
                      "label": {
                        "type": "string",
                        "description": "Short user-facing option label."
                      },
                      "description": {
                        "type": "string",
                        "description": "One sentence explaining the tradeoff or impact."
                      }
                    },
                    "required": [
                      "label"
                    ]
                  }
                },
                "multi_select": {
                  "type": "boolean",
                  "description": "Whether the user may select more than one option. Defaults to false."
                }
              },
              "required": [
                "id",
                "question"
              ]
            }
          }
        },
        "required": [
          "questions"
        ]
      }
    },
    {
      "name": "bash",
      "description": "Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`. Attempting a command the sandbox may deny is safe and expected: run it and read the marker rather than assuming the denial. When a command is denied and a wider mode would let it succeed, escalate immediately in the same turn — the one sanctioned exception to a denial: retry the exact same command once with `sandbox_permissions` (the narrowest wider mode that suffices) plus a one-sentence `justification`. Do not detour through chat to ask permission first — the approval prompt raised by that retry is how the user consents. If the session states approval prompts are disabled, there is no exception: a denial is final — do not set `sandbox_permissions`. Never escalate speculatively: ground the request in a real denial — normally the one this command just hit; escalating up front is fine only when this session already denied the same access. A rejected escalation is final for that command — stop and explain, never work around it — but it does not forbid attempting or escalating other commands later.",
      "parameters": {
        "type": "object",
        "properties": {
          "command": {
            "type": "string",
            "description": "The bash command to execute."
          },
          "description": {
            "type": "string",
            "description": "Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."
          },
          "timeoutMs": {
            "type": "number",
            "description": "Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."
          },
          "workdir": {
            "type": "string",
            "description": "Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."
          },
          "run_in_background": {
            "type": "boolean",
            "description": "Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."
          },
          "sandbox_permissions": {
            "type": "string",
            "description": "The wider sandbox mode this command needs. Only valid as a one-shot retry of a command the sandbox just denied; requires justification and user approval.",
            "enum": [
              "workspace-write",
              "danger-full-access"
            ]
          },
          "justification": {
            "type": "string",
            "description": "Required with sandbox_permissions: one sentence for the user explaining why this exact command needs the wider access."
          }
        },
        "required": [
          "command",
          "description"
        ]
      }
    },
    {
      "name": "edit",
      "description": "Edit an existing UTF-8 text file by replacing literal text.",
      "parameters": {
        "type": "object",
        "properties": {
          "file_path": {
            "type": "string",
            "description": "Path to edit, resolved by the filesystem backend."
          },
          "old_string": {
            "type": "string",
            "description": "Literal text to replace. Must match exactly."
          },
          "new_string": {
            "type": "string",
            "description": "Literal replacement text. Use an empty string to delete the match."
          },
          "replace_all": {
            "type": "boolean",
            "description": "Replace all matches. Defaults to false; when false, old_string must appear exactly once."
          },
          "sandbox_permissions": {
            "type": "string",
            "description": "The wider sandbox mode this file operation needs. Only valid as a one-shot retry of an operation the sandbox just denied; requires justification and user approval.",
            "enum": [
              "workspace-write",
              "danger-full-access"
            ]
          },
          "justification": {
            "type": "string",
            "description": "Required with sandbox_permissions: one sentence for the user explaining why this exact file operation needs the wider access."
          }
        },
        "required": [
          "file_path",
          "old_string",
          "new_string"
        ]
      }
    },
    {
      "name": "exit_plan_mode",
      "description": "Present your plan for the user's review and, on approval, leave plan mode. Send the COMPLETE plan as markdown, starting with a # heading that names it. The user may approve (carry out the plan from your next step) or keep planning — their feedback comes back in the tool result; revise and present again.",
      "parameters": {
        "type": "object",
        "properties": {
          "plan": {
            "type": "string",
            "description": "The complete plan, as markdown, starting with a # heading that names it."
          }
        },
        "required": [
          "plan"
        ]
      }
    },
    {
      "name": "read",
      "description": "Read a UTF-8 text file and return line-numbered content.",
      "parameters": {
        "type": "object",
        "properties": {
          "file_path": {
            "type": "string",
            "description": "Path to read, resolved by the filesystem backend."
          },
          "offset": {
            "type": "number",
            "description": "1-based first line to return. Defaults to 1."
          },
          "limit": {
            "type": "number",
            "description": "Maximum number of lines to return. Defaults to 2000."
          }
        },
        "required": [
          "file_path"
        ]
      }
    },
    {
      "name": "skill",
      "description": "Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.",
      "parameters": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string",
            "description": "The exact skill name from the available skills list."
          }
        },
        "required": [
          "name"
        ]
      }
    },
    {
      "name": "task_kill",
      "description": "Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.",
      "parameters": {
        "type": "object",
        "properties": {
          "task_id": {
            "type": "string",
            "description": "Task id returned by the tool that started the background work."
          },
          "reason": {
            "type": "string",
            "description": "Optional short reason, recorded in the log and forwarded to the task."
          }
        },
        "required": [
          "task_id"
        ]
      }
    },
    {
      "name": "task_list",
      "description": "List your background tasks (running and finished) with their ids, kinds, and statuses.",
      "parameters": {
        "type": "object",
        "properties": {}
      }
    },
    {
      "name": "task_output",
      "description": "Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.",
      "parameters": {
        "type": "object",
        "properties": {
          "task_id": {
            "type": "string",
            "description": "Task id returned by the tool that started the background work."
          },
          "wait": {
            "type": "boolean",
            "description": "Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."
          },
          "timeout_ms": {
            "type": "number",
            "description": "Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."
          }
        },
        "required": [
          "task_id"
        ]
      }
    },
    {
      "name": "todo_write",
      "description": "Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).",
      "parameters": {
        "type": "object",
        "properties": {
          "todos": {
            "type": "array",
            "description": "The COMPLETE task list, replacing any previous list.",
            "items": {
              "type": "object",
              "properties": {
                "content": {
                  "type": "string",
                  "description": "What the task is — a short imperative line."
                },
                "status": {
                  "type": "string",
                  "description": "pending (not started) | in_progress (now) | completed (done).",
                  "enum": [
                    "pending",
                    "in_progress",
                    "completed"
                  ]
                }
              },
              "required": [
                "content",
                "status"
              ]
            }
          }
        },
        "required": [
          "todos"
        ]
      }
    },
    {
      "name": "write",
      "description": "Create or fully replace a UTF-8 text file.",
      "parameters": {
        "type": "object",
        "properties": {
          "file_path": {
            "type": "string",
            "description": "Path to write, resolved by the filesystem backend."
          },
          "content": {
            "type": "string",
            "description": "Full UTF-8 text content to write."
          },
          "sandbox_permissions": {
            "type": "string",
            "description": "The wider sandbox mode this file operation needs. Only valid as a one-shot retry of an operation the sandbox just denied; requires justification and user approval.",
            "enum": [
              "workspace-write",
              "danger-full-access"
            ]
          },
          "justification": {
            "type": "string",
            "description": "Required with sandbox_permissions: one sentence for the user explaining why this exact file operation needs the wider access."
          }
        },
        "required": [
          "file_path",
          "content"
        ]
      }
    }
  ],
  "changes": [
    [
      {
        "name": "ask_user_question",
        "description": "Ask the user a concise question when you need confirmation, a choice, or missing information before proceeding. Send one or more questions, each with a stable id that will be echoed in the answer.",
        "parameters": {
          "type": "object",
          "properties": {
            "questions": {
              "type": "array",
              "description": "Questions to ask the user before continuing.",
              "items": {
                "type": "object",
                "properties": {
                  "id": {
                    "type": "string",
                    "description": "Stable id for this question; echoed in the answer."
                  },
                  "question": {
                    "type": "string",
                    "description": "The specific question to ask the user."
                  },
                  "header": {
                    "type": "string",
                    "description": "Optional short heading for the question, such as \"Confirm\" or \"Choose Mode\"."
                  },
                  "options": {
                    "type": "array",
                    "description": "Optional choices to show the user. If you recommend one, put it first and append \"(Recommended)\" to that label.",
                    "items": {
                      "type": "object",
                      "properties": {
                        "label": {
                          "type": "string",
                          "description": "Short user-facing option label."
                        },
                        "description": {
                          "type": "string",
                          "description": "One sentence explaining the tradeoff or impact."
                        }
                      },
                      "required": [
                        "label"
                      ]
                    }
                  },
                  "multi_select": {
                    "type": "boolean",
                    "description": "Whether the user may select more than one option. Defaults to false."
                  }
                },
                "required": [
                  "id",
                  "question"
                ]
              }
            }
          },
          "required": [
            "questions"
          ]
        }
      },
      {
        "name": "bash",
        "description": "Execute a bash command (`bash -c`) and return its stdout/stderr. Each call runs in a fresh shell: no state (cwd, variables, functions) persists between calls — pass `workdir` instead of using `cd`. Non-zero exits are reported as `[exit code: N]`. Current harness environment facts are exposed through managed `$DSH_*` variables; inspect them when needed. Commands may run under a file sandbox; a blocked file operation is reported as `[sandbox: file access denied under <mode> mode]` — a policy denial, not a bug in the command; do not retry another way. Long output is truncated to its tail; the full output is saved to a file whose path is reported when available. Set `run_in_background: true` for long-running commands: the call returns a task id immediately; read its output with `task_output` and stop it with `task_kill`. Attempting a command the sandbox may deny is safe and expected: run it and read the marker rather than assuming the denial. When a command is denied and a wider mode would let it succeed, escalate immediately in the same turn — the one sanctioned exception to a denial: retry the exact same command once with `sandbox_permissions` (the narrowest wider mode that suffices) plus a one-sentence `justification`. Do not detour through chat to ask permission first — the approval prompt raised by that retry is how the user consents. If the session states approval prompts are disabled, there is no exception: a denial is final — do not set `sandbox_permissions`. Never escalate speculatively: ground the request in a real denial — normally the one this command just hit; escalating up front is fine only when this session already denied the same access. A rejected escalation is final for that command — stop and explain, never work around it — but it does not forbid attempting or escalating other commands later.",
        "parameters": {
          "type": "object",
          "properties": {
            "command": {
              "type": "string",
              "description": "The bash command to execute."
            },
            "description": {
              "type": "string",
              "description": "Clear, concise description of what this command does in active voice, 5-10 words (shown in the UI). Examples: \"ls\" → \"List files in current directory\"; \"git status\" → \"Show working tree status\"; \"npm install\" → \"Install package dependencies\"."
            },
            "timeoutMs": {
              "type": "number",
              "description": "Timeout in milliseconds. The executor applies its configured default and cap, and kills the command on expiry."
            },
            "workdir": {
              "type": "string",
              "description": "Working directory for this command. Defaults to the session workspace; a relative path is resolved against it."
            },
            "run_in_background": {
              "type": "boolean",
              "description": "Run in the background and return a task id immediately (collect with task_output, stop with task_kill). No timeout applies."
            },
            "sandbox_permissions": {
              "type": "string",
              "description": "The wider sandbox mode this command needs. Only valid as a one-shot retry of a command the sandbox just denied; requires justification and user approval.",
              "enum": [
                "workspace-write",
                "danger-full-access"
              ]
            },
            "justification": {
              "type": "string",
              "description": "Required with sandbox_permissions: one sentence for the user explaining why this exact command needs the wider access."
            }
          },
          "required": [
            "command",
            "description"
          ]
        }
      },
      {
        "name": "edit",
        "description": "Edit an existing UTF-8 text file by replacing literal text.",
        "parameters": {
          "type": "object",
          "properties": {
            "file_path": {
              "type": "string",
              "description": "Path to edit, resolved by the filesystem backend."
            },
            "old_string": {
              "type": "string",
              "description": "Literal text to replace. Must match exactly."
            },
            "new_string": {
              "type": "string",
              "description": "Literal replacement text. Use an empty string to delete the match."
            },
            "replace_all": {
              "type": "boolean",
              "description": "Replace all matches. Defaults to false; when false, old_string must appear exactly once."
            },
            "sandbox_permissions": {
              "type": "string",
              "description": "The wider sandbox mode this file operation needs. Only valid as a one-shot retry of an operation the sandbox just denied; requires justification and user approval.",
              "enum": [
                "workspace-write",
                "danger-full-access"
              ]
            },
            "justification": {
              "type": "string",
              "description": "Required with sandbox_permissions: one sentence for the user explaining why this exact file operation needs the wider access."
            }
          },
          "required": [
            "file_path",
            "old_string",
            "new_string"
          ]
        }
      },
      {
        "name": "read",
        "description": "Read a UTF-8 text file and return line-numbered content.",
        "parameters": {
          "type": "object",
          "properties": {
            "file_path": {
              "type": "string",
              "description": "Path to read, resolved by the filesystem backend."
            },
            "offset": {
              "type": "number",
              "description": "1-based first line to return. Defaults to 1."
            },
            "limit": {
              "type": "number",
              "description": "Maximum number of lines to return. Defaults to 2000."
            }
          },
          "required": [
            "file_path"
          ]
        }
      },
      {
        "name": "skill",
        "description": "Load the full instructions for an available skill. Call this with the exact skill name from the session skill catalog before acting on a task that names or clearly matches that skill.",
        "parameters": {
          "type": "object",
          "properties": {
            "name": {
              "type": "string",
              "description": "The exact skill name from the available skills list."
            }
          },
          "required": [
            "name"
          ]
        }
      },
      {
        "name": "task_kill",
        "description": "Request cancellation of a running background task by task id. Returns immediately; the task settles as killed once its work actually stops.",
        "parameters": {
          "type": "object",
          "properties": {
            "task_id": {
              "type": "string",
              "description": "Task id returned by the tool that started the background work."
            },
            "reason": {
              "type": "string",
              "description": "Optional short reason, recorded in the log and forwarded to the task."
            }
          },
          "required": [
            "task_id"
          ]
        }
      },
      {
        "name": "task_list",
        "description": "List your background tasks (running and finished) with their ids, kinds, and statuses.",
        "parameters": {
          "type": "object",
          "properties": {}
        }
      },
      {
        "name": "task_output",
        "description": "Read a background task. Stream tasks return only output since the previous read; final-output tasks return their result after settlement. Every response ends with `[status: ...]`. Reads are non-blocking unless `wait: true`, which waits up to the configured cap.",
        "parameters": {
          "type": "object",
          "properties": {
            "task_id": {
              "type": "string",
              "description": "Task id returned by the tool that started the background work."
            },
            "wait": {
              "type": "boolean",
              "description": "Block until the task reaches a terminal status or the timeout expires. A timed-out wait returns [status: running] and leaves the task alive."
            },
            "timeout_ms": {
              "type": "number",
              "description": "Max wait in milliseconds (only meaningful with wait: true). Defaults to the configured wait timeout; capped by the configured maximum."
            }
          },
          "required": [
            "task_id"
          ]
        }
      },
      {
        "name": "todo_write",
        "description": "Record and update a structured task list for the current work. Send the ENTIRE list every call — it REPLACES the previous list (there are no partial updates, no per-item edits). Use it to plan multi-step work and show progress: add one todo per concrete step before you start. Keep AT MOST ONE todo `in_progress` at a time; while work remains, exactly one active task should be `in_progress`. Mark a todo `completed` the moment it is done (do not batch completions), and allow no `in_progress` item only once all work is complete. Skip the list for trivial single-step tasks. Statuses: `pending` (not started), `in_progress` (being worked on now), `completed` (finished).",
        "parameters": {
          "type": "object",
          "properties": {
            "todos": {
              "type": "array",
              "description": "The COMPLETE task list, replacing any previous list.",
              "items": {
                "type": "object",
                "properties": {
                  "content": {
                    "type": "string",
                    "description": "What the task is — a short imperative line."
                  },
                  "status": {
                    "type": "string",
                    "description": "pending (not started) | in_progress (now) | completed (done).",
                    "enum": [
                      "pending",
                      "in_progress",
                      "completed"
                    ]
                  }
                },
                "required": [
                  "content",
                  "status"
                ]
              }
            }
          },
          "required": [
            "todos"
          ]
        }
      },
      {
        "name": "write",
        "description": "Create or fully replace a UTF-8 text file.",
        "parameters": {
          "type": "object",
          "properties": {
            "file_path": {
              "type": "string",
              "description": "Path to write, resolved by the filesystem backend."
            },
            "content": {
              "type": "string",
              "description": "Full UTF-8 text content to write."
            },
            "sandbox_permissions": {
              "type": "string",
              "description": "The wider sandbox mode this file operation needs. Only valid as a one-shot retry of an operation the sandbox just denied; requires justification and user approval.",
              "enum": [
                "workspace-write",
                "danger-full-access"
              ]
            },
            "justification": {
              "type": "string",
              "description": "Required with sandbox_permissions: one sentence for the user explaining why this exact file operation needs the wider access."
            }
          },
          "required": [
            "file_path",
            "content"
          ]
        }
      }
    ]
  ]
}