betas.ts

constants/betas.ts

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Imports

Keywords

What this is

This page documents one file from the repository and includes its full source so you can read it without leaving the docs site.

Beginner explanation

This file is one piece of the larger system. Its name, directory, imports, and exports show where it fits. Start by reading the exports and related files first.

How it is used

Start from the exports list and related files. Those are the easiest clues for where this file fits into the system.

Expert explanation

Architecturally, this file intersects with general runtime concerns. It contains 53 lines, 1 detected imports, and 20 detected exports.

Important relationships

Detected exports

CLAUDE_CODE_20250219_BETA_HEADER
INTERLEAVED_THINKING_BETA_HEADER
CONTEXT_1M_BETA_HEADER
CONTEXT_MANAGEMENT_BETA_HEADER
STRUCTURED_OUTPUTS_BETA_HEADER
WEB_SEARCH_BETA_HEADER
TOOL_SEARCH_BETA_HEADER_1P
TOOL_SEARCH_BETA_HEADER_3P
EFFORT_BETA_HEADER
TASK_BUDGETS_BETA_HEADER
PROMPT_CACHING_SCOPE_BETA_HEADER
FAST_MODE_BETA_HEADER
REDACT_THINKING_BETA_HEADER
TOKEN_EFFICIENT_TOOLS_BETA_HEADER
SUMMARIZE_CONNECTOR_TEXT_BETA_HEADER
AFK_MODE_BETA_HEADER
CLI_INTERNAL_BETA_HEADER
ADVISOR_BETA_HEADER
BEDROCK_EXTRA_PARAMS_HEADERS
VERTEX_COUNT_TOKENS_ALLOWED_BETAS

Keywords

bedrockfeatureinterleaved_thinking_beta_headerbetaheadersclaude_code_20250219_beta_headercontext_1m_beta_headercontext_management_beta_headeradvanced-tool-use-2025-11-20vertex

Detected imports

bun:bundle

Source notes

This page embeds the full file contents. Small or leaf files are still indexed honestly instead of being over-explained.

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Full source

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,
])