@bentway/anthropic

Anthropic /v1/messages completion port for the bentway kernel.

Part of Bentway, a runtime-agnostic agent execution kernel.

Install

npm install @bentway/anthropic @bentway/core @bentway/stream-json

Usage

complete() POSTs the /v1/messages endpoint, accumulates the SSE stream, and resolves to the neutral PortResult shape the turn loop reads directly. Expected transport failures resolve to the neutral error shape instead of throwing.

import {
  complete,
  selectThinkingConfig,
  makeAnthropicSerializeRequest,
  computeAnthropicTotalCostUsd,
} from '@bentway/anthropic';

const { thinking, output_config } = selectThinkingConfig({
  model: 'claude-opus-4-8',
  max_tokens: 4096,
});

const serializeRequest = makeAnthropicSerializeRequest({
  apiKey: process.env.ANTHROPIC_API_KEY,
  baseUrl: 'https://api.anthropic.com',
  model: 'claude-opus-4-8',
  max_tokens: 4096,
  system: 'You are helpful.',
  runtimeTools: { tools: [] },
  thinking,
  output_config,
});

// Inject `complete` and `serializeRequest` into runTurnLoop from
// @bentway/core, plus `computeAnthropicTotalCostUsd` as the cost function.

The package also exports accumulateAnthropicStream (the pure SSE folder) and convertRuntimeToolsToAnthropicTools for downstream reuse and testing.

License

Apache-2.0