typert: invalid ${subject} "${value}" — must contain only RP

Error message

typert: invalid ${subject} "${value}" — must contain only RPC endpoint segment characters

What it means

Error "typert: invalid ${subject} "${value}" — must contain only RPC endpoint segment characters" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/typert/registry/src/service.ts:707

    validateWireName('Context wire field', descriptor.invocation.wire)
    if (wires.has(descriptor.invocation.wire)) {
      throw new Error(`typert: invocation "${descriptor.id}" repeats wire field "${descriptor.invocation.wire}"`)
    }
    validateCodec(descriptor.invocation.codec, `${descriptor.id} Context`)
  }
}

function validateCodec(codec: InvocationDescriptor['result'], subject: string): void {
  if (codec.mode === 'src-json') return
  validateNonempty(`${subject} type symbol`, codec.typeSymbol)
  if (typeof codec.schema.parse !== 'function') {
    throw new Error(`typert: ${subject} strict codec has no parse() method`)
  }
}

function validateWireName(subject: string, value: string): void {
  if (value === '.' || value === '..' || !/^[A-Za-z0-9_$.-]+$/.test(value)) {
    throw new Error(`typert: invalid ${subject} "${value}" — must contain only RPC endpoint segment characters`)
  }
}

function validateSegment(subject: string, value: string): void {
  if (value.length === 0 || value.includes('#')) {
    throw new Error(`typert: invalid ${subject} "${value}" — must be nonempty and must not contain "#"`)
  }
}

function validateNonempty(subject: string, value: string): void {
  if (value.length === 0) throw new Error(`typert: invalid ${subject} — must be nonempty`)
}

export default TypertRegistry

View on GitHub (pinned to b150a551b8)

Solutions

Use only allowed RPC endpoint segment characters in the value.

When it happens

Trigger: Thrown at packages/typert/registry/src/service.ts:707 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/1e179fadff8908d2. Report an issue: GitHub.