deepseek-ai/deepseek-harness · error · WorkflowError

UNSUPPORTED_SCHEMA

UNSUPPORTED_SCHEMA

Error message

agent() schema is outside the supported subset — ${error.message}

What it means

Error "agent() schema is outside the supported subset — ${error.message}" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/workflow/workflow-worker-thread/src/runtime.ts:388

      if (DEFERRED_AGENT_OPTIONS.has(key)) {
        throw new WorkflowError(`agent() option "${key}" is deferred and not supported by this engine (supported: label, phase, schema, provider, model)`, 'UNSUPPORTED_OPTION')
      }
      throw new WorkflowError(`agent() option "${key}" is not recognized (supported: label, phase, schema, provider, model)`, 'UNSUPPORTED_OPTION')
    }
    for (const key of ['label', 'phase', 'provider', 'model'] as const) {
      if (record[key] !== undefined && typeof record[key] !== 'string') {
        throw new WorkflowError(`agent() option "${key}" must be a string`, 'INVALID_ARGUMENT')
      }
    }
    let schema: ObjectJsonSchema | undefined
    if (record.schema !== undefined) {
      try {
        assertObjectJsonSchema(record.schema)
        schema = record.schema
      } catch (error: unknown) {
        /* v8 ignore next -- defensive rethrow arm: assertObjectJsonSchema only throws JsonSchemaError */
        if (!(error instanceof JsonSchemaError)) throw error
        throw new WorkflowError(`agent() schema is outside the supported subset — ${error.message}`, 'UNSUPPORTED_SCHEMA', { cause: error })
      }
    }
    return {
      ...record.label !== undefined ? { label: record.label as string } : {},
      ...record.phase !== undefined ? { phase: record.phase as string } : {},
      ...record.provider !== undefined ? { provider: record.provider as string } : {},
      ...record.model !== undefined ? { model: record.model as string } : {},
      ...schema !== undefined ? { schema } : {},
    }
  }

  /** The `parallel(thunks)` hook: each thunk caught → `null`; fatal errors propagate. */
  private async parallel(rawThunks: unknown): Promise<unknown[]> {
    this.throwIfCancelled()
    if (!Array.isArray(rawThunks)) {
      throw new WorkflowError('parallel() requires an array of zero-argument functions', 'INVALID_ARGUMENT')
    }
    this.assertItemCap(rawThunks.length, 'parallel()')

View on GitHub (pinned to b150a551b8)

Solutions

1. Simplify the agent() schema to the supported JSON-schema subset per the inner error message.

When it happens

Trigger: Thrown at packages/workflow/workflow-worker-thread/src/runtime.ts:388 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/06f0e0fca2eb5a3c. Report an issue: GitHub.