deepseek-ai/deepseek-harness · error · Error

harness.defineTool ${path}.enum must be a non-empty array

Error message

harness.defineTool ${path}.enum must be a non-empty array

What it means

Error "harness.defineTool ${path}.enum must be a non-empty array" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/extensions/cordis-host-runner/src/guard.ts:472

            kind: 'value',
            value: value.items,
            path: `${path}.items`,
            forceRequired: false,
            raw: task.raw,
            parameterProperty: false,
            destination: { kind: 'item', target: prop },
          })
        }
        break
      case 'string':
      case 'number':
      case 'integer':
      case 'boolean':
      case 'null':
        assertSchemaKeys(value, path, ['type', 'enum', 'const', ...requiredKey, ...ANNOTATION_KEYS])
        if (Object.hasOwn(value, 'enum')) {
          if (!isDensePlainArray(value.enum) || value.enum.length === 0) {
            throw new Error(`harness.defineTool ${path}.enum must be a non-empty array`)
          }
          prop.enum = cloneJson(value.enum, `harness.defineTool ${path}.enum`)
        }
        if (Object.hasOwn(value, 'const')) prop.const = cloneJson(value.const, `harness.defineTool ${path}.const`)
        break
      case 'json':
        assertSchemaKeys(value, path, ['type', ...requiredKey, ...ANNOTATION_KEYS])
        break
      /* v8 ignore next 2 -- SCHEMA_TYPES narrows this closed switch before dispatch. */
      default:
        throw new Error(`harness.defineTool ${path} must declare a valid type: ${VALID_TYPES}`)
    }
  }
  /* v8 ignore next -- the root map task assigns before scheduling descendants. */
  return holder.value ?? {}
}

function markDynamicTool(tool: ToolDefinition): DynamicToolDefinition {

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/extensions/cordis-host-runner/src/guard.ts:472 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/32cac8e0a5411f40. Report an issue: GitHub.