deepseek-ai/deepseek-harness · error · Error

harness.defineTool ${path} must be a ParameterSchemaSpec pro

Error message

harness.defineTool ${path} must be a ParameterSchemaSpec property object

What it means

Error "harness.defineTool ${path} must be a ParameterSchemaSpec property object" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/extensions/cordis-host-runner/src/guard.ts:368

        const entry = mapEntries[index]
        /* v8 ignore next -- the loop is bounded by the captured entry count. */
        if (entry === undefined) continue
        tasks.push({
          kind: 'value',
          value: entry[1],
          path: `${task.path}.${entry[0]}`,
          forceRequired: task.requiredNames.has(entry[0]),
          raw: task.raw,
          parameterProperty: true,
          destination: { kind: 'property', target: spec, key: entry[0] },
        })
      }
      continue
    }

    const { value, path } = task
    if (!isPlainRecord(value)) {
      throw new Error(`harness.defineTool ${path} must be a ParameterSchemaSpec property object`)
    }
    assertSchemaContainerKeys(value, path)
    if (ancestors.has(value)) throw new Error(`harness.defineTool ${path} is circular`)
    ancestors.add(value)
    const requiredKey = task.parameterProperty && !task.raw ? ['required'] : []
    if (task.parameterProperty && task.raw && Object.hasOwn(value, 'required') && value.type !== 'object') {
      throw new Error(`harness.defineTool ${path}.required belongs to the containing raw object schema`)
    }
    if (task.parameterProperty && !task.raw && Object.hasOwn(value, 'required') && value.required !== true) {
      throw new Error(`harness.defineTool ${path}.required must be true when present`)
    }
    const prop: Record<string, unknown> = {}
    assignNormalizedValue(task.destination, prop)
    tasks.push({ kind: 'leave', value })
    if (task.forceRequired || value.required === true) prop.required = true
    copyAnnotations(value, prop, path)

    if (Object.hasOwn(value, 'oneOf')) {

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/extensions/cordis-host-runner/src/guard.ts:368 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/a45fcd6cd0db15f7. Report an issue: GitHub.