claude-code/src/constants/betas.ts

import { feature } from 'bun:bundle'

export const CLAUDE_CODE_20250219_BETA_HEADER = 'claude-code-20250219'
export const INTERLEAVED_THINKING_BETA_HEADER =
  'interleaved-thinking-2025-05-14'
export const CONTEXT_1M_BETA_HEADER = 'context-1m-2025-08-07'
export const CONTEXT_MANAGEMENT_BETA_HEADER = 'context-management-2025-06-27'
export const STRUCTURED_OUTPUTS_BETA_HEADER = 'structured-outputs-2025-12-15'
export const WEB_SEARCH_BETA_HEADER = 'web-search-2025-03-05'
// Tool search beta headers differ by provider:
// - Claude API / Foundry: advanced-tool-use-2025-11-20
// - Vertex AI / Bedrock: tool-search-tool-2025-10-19
export const TOOL_SEARCH_BETA_HEADER_1P = 'advanced-tool-use-2025-11-20'
export const TOOL_SEARCH_BETA_HEADER_3P = 'tool-search-tool-2025-10-19'
export const EFFORT_BETA_HEADER = 'effort-2025-11-24'
export const TASK_BUDGETS_BETA_HEADER = 'task-budgets-2026-03-13'
export const PROMPT_CACHING_SCOPE_BETA_HEADER =
  'prompt-caching-scope-2026-01-05'
export const FAST_MODE_BETA_HEADER = 'fast-mode-2026-02-01'
export const REDACT_THINKING_BETA_HEADER = 'redact-thinking-2026-02-12'
export const TOKEN_EFFICIENT_TOOLS_BETA_HEADER =
  'token-efficient-tools-2026-03-28'
export const SUMMARIZE_CONNECTOR_TEXT_BETA_HEADER = feature('CONNECTOR_TEXT')
  ? 'summarize-connector-text-2026-03-13'
  : ''
export const AFK_MODE_BETA_HEADER = feature('TRANSCRIPT_CLASSIFIER')
  ? 'afk-mode-2026-01-31'
  : ''
export const CLI_INTERNAL_BETA_HEADER =
  process.env.USER_TYPE === 'ant' ? 'cli-internal-2026-02-09' : ''
export const ADVISOR_BETA_HEADER = 'advisor-tool-2026-03-01'

/**
 * Bedrock only supports a limited number of beta headers and only through
 * extraBodyParams. This set maintains the beta strings that should be in
 * Bedrock extraBodyParams *and not* in Bedrock headers.
 */
export const BEDROCK_EXTRA_PARAMS_HEADERS = new Set([
  INTERLEAVED_THINKING_BETA_HEADER,
  CONTEXT_1M_BETA_HEADER,
  TOOL_SEARCH_BETA_HEADER_3P,
])

/**
 * Betas allowed on Vertex countTokens API.
 * Other betas will cause 400 errors.
 */
export const VERTEX_COUNT_TOKENS_ALLOWED_BETAS = new Set([
  CLAUDE_CODE_20250219_BETA_HEADER,
  INTERLEAVED_THINKING_BETA_HEADER,
  CONTEXT_MANAGEMENT_BETA_HEADER,
])
export const CACHE_EDITING_BETA_HEADER: string = '';