deepseek-ai/deepseek-harness · error · Error

unknown Tool inspect method "${method}"

Error message

unknown Tool inspect method "${method}"

What it means

Error "unknown Tool inspect method "${method}"" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/extensions/tool-cordis/src/providers.ts:60

      EVENT_OUTPUT,
    ),
    registration('Builtin', 'Plain-JavaScript symbols available to a dynamic Host half.', 'listBuiltins', () => ({
      builtins: HOST_BUILTIN_INSPECTION,
      referencedTypes: [],
    } as unknown as JsonValue)),
    {
      manifest: {
        id: 'Tool',
        description: 'Tools visible to the requesting Agent, including scoped and dynamic registrations.',
        methods: [{
          name: 'listTools',
          description: 'Return every Tool schema currently callable by this Agent.',
          inputSchema: EMPTY_INPUT,
          outputSchema: ANY_OUTPUT,
        }],
      },
      query(method, _input, context) {
        if (method !== 'listTools') throw new Error(`unknown Tool inspect method "${method}"`)
        return Promise.resolve({ tools: ctx.tools.schemas(context.agent) } as unknown as JsonValue)
      },
    },
  ]
}

function registration(
  id: string,
  description: string,
  method: string,
  query: (input: JsonValue | undefined) => JsonValue | Promise<JsonValue>,
  inputSchema: JsonValue = EMPTY_INPUT,
  outputSchema: JsonValue = ANY_OUTPUT,
): HostCordisInspectProviderRegistration {
  return {
    manifest: {
      id,
      description,

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/extensions/tool-cordis/src/providers.ts:60 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/1886ca77a2225122. Report an issue: GitHub.