deepseek-ai/deepseek-harness · error · Error

client api: ${endpoint} has no Client Context binder for ${J

Error message

client api: ${endpoint} has no Client Context binder for ${JSON.stringify(projection.context)}

What it means

Error "client api: ${endpoint} has no Client Context binder for ${JSON.stringify(projection.context)}" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/api/gateway/src/client/index.ts:384

    const endpoint = endpointOf(descriptor)
    if (!token.active) return withdrawn(endpoint)
    const expected = descriptor.parameters.length - (projection?.parameterIndex === undefined ? 0 : 1)
    const hasCallerSignal = descriptor.cancellation !== undefined && values.length === expected + 1
    if (values.length !== expected && !hasCallerSignal) {
      const contract = descriptor.cancellation === undefined
        ? `${String(expected)} argument(s)`
        : `${String(expected)} business argument(s) plus an optional AbortSignal`
      throw new Error(
        `client api: ${endpoint} expected ${contract}, got ${String(values.length)}`,
      )
    }
    const args = Object.create(null) as Record<string, unknown>
    if (projection !== undefined) {
      const binder = boundIdentity === undefined
        ? this.ownerCtx.typert.contexts.getClient(projection.context)
        : undefined
      if (boundIdentity === undefined && binder === undefined) {
        throw new Error(`client api: ${endpoint} has no Client Context binder for ${JSON.stringify(projection.context)}`)
      }
      const identity = boundIdentity === undefined
        ? binder?.identity(callerCtx)
        : boundIdentity.value
      if (identity === undefined) {
        throw new Error(`client api: ${endpoint} requires a ${JSON.stringify(projection.context)} Context`)
      }
      args[projection.wire] = parse(projection.codec, identity, endpoint, projection.wire)
    }
    let valueIndex = 0
    descriptor.parameters.forEach((parameter, parameterIndex) => {
      if (parameterIndex === projection?.parameterIndex) return
      const value = parse(parameter.codec, values[valueIndex], endpoint, parameter.wire)
      if (value !== undefined) args[parameter.wire] = value
      valueIndex += 1
    })
    const connection = this.ownerCtx.get('connection') as ConnectionHandle | undefined
    if (connection === undefined) throw new Error(`client api: ${endpoint} has no active Connection`)

View on GitHub (pinned to b150a551b8)

Solutions

1. Register a Client Context binder for the projection context, or change the projection to an available context.

When it happens

Trigger: Thrown at packages/api/gateway/src/client/index.ts:384 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/21343ed797f106e0. Report an issue: GitHub.