deepseek-ai/deepseek-harness · error · JsonSchemaError

UNSUPPORTED_SCHEMA

UNSUPPORTED_SCHEMA

Error message

unsupported JSON schema: ${violations.join('; ')}

What it means

Error "unsupported JSON schema: ${violations.join('; ')}" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/core/tools/src/schema.ts:181

                : S extends { type: 'json' } ? JsonValue :
                  S extends { oneOf: readonly unknown[] }
                    ? InferValueAt<S['oneOf'][number], NextInferenceDepth<Depth>>
                    : never

/**
 * Infer the TypeScript value accepted by an author-facing value schema. Exact
 * inference is bounded to 16 container levels, then falls back to `JsonValue`.
 */
export type InferValue<S> = InferValueAt<S, []>

/** Infer the TypeScript argument object for an implicit parameter schema. */
export type InferArgs<S> = InferProperties<S, []>

const ANNOTATION_KEYS = ['description', 'title', 'default', 'examples'] as const

/** Throw one author-schema violation through the shared schema error type. */
function authorError(message: string): never {
  throw new JsonSchemaError([message])
}

/** Copy own annotation fields for validation by the raw-schema boundary. */
function copyAnnotations(source: Record<string, unknown>, target: JsonSchemaNode): void {
  if (Object.hasOwn(source, 'description')) target.description = source.description as string
  if (Object.hasOwn(source, 'title')) target.title = source.title as string
  if (Object.hasOwn(source, 'default')) target.default = source.default as JsonValue
  if (Object.hasOwn(source, 'examples')) target.examples = source.examples as JsonValue
}

/** Reject author-only keys outside one node's declared vocabulary. */
function assertAuthorKeys(source: Record<string, unknown>, path: string, allowed: readonly string[]): void {
  for (const key of Object.keys(source)) {
    if (!allowed.includes(key)) authorError(`${path}.${key} is not supported by the value schema DSL`)
  }
}

/** Compiled form of one implicit property map. */

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/core/tools/src/schema.ts:181 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/e825ec2efe3fef4c. Report an issue: GitHub.