deepseek-ai/deepseek-harness · error · PresetNotWritableError

agent-presets: preset "${presetId}" cannot be written: this

Error message

agent-presets: preset "${presetId}" cannot be written: this deployment configures no user-writable preset root

What it means

Error "agent-presets: preset "${presetId}" cannot be written: this deployment configures no user-writable preset root" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/preset/agent-presets/src/authoring.ts:68

  constructor(
    /** What the caller tried to change, for the diagnostic. */
    readonly presetId: string,
    reason: string,
  ) {
    super(`agent-presets: preset "${presetId}" cannot be written: ${reason}`)
  }
}

/**
 * The root locally authored presets are written to.
 * @param roots - the configured roots in precedence order.
 * @returns the absolute path of the first `user` root.
 * @throws when the deployment configured no writable root.
 */
export function writableRoot(roots: readonly PresetRoot[]): string {
  const root = roots.find(candidate => candidate.trust === 'user')
  if (root === undefined) {
    throw new PresetNotWritableError('', 'this deployment configures no user-writable preset root')
  }
  return resolve(expandHomePath(root.path))
}

/**
 * Read one preset's composition text.
 * @param preset - the resolved preset.
 * @returns the file's contents.
 */
export async function readComposition(preset: AgentPreset): Promise<string> {
  return await readFile(preset.path, 'utf8')
}

/** Whether anything occupies the path (cp's own errorOnExist backstops races). */
async function occupied(path: string): Promise<boolean> {
  let present = true
  try {
    await stat(path)

View on GitHub (pinned to b150a551b8)

Solutions

1. Configure a user-writable preset root for the deployment.

When it happens

Trigger: Thrown at packages/preset/agent-presets/src/authoring.ts:68 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/09393873d0c8e7d6. Report an issue: GitHub.