70cfa61582
* fix: disable experimental API betas by default to prevent 500 errors Tool search (defer_loading), global cache scope, and context management betas require internal Anthropic server-side support. External accounts receive 500 Internal Server Error when these are sent. Set CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=true by default in the CLI entrypoint. Users with internal access can opt back in with =false. Also includes: cache key stability fixes (Sonnet 1M latch, system-before- messages key ordering, resume fingerprint isMeta skip), sideQuery default cleanup, and /dream command. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * refactor: standardize API headers to Headers type and enable tengu feature flags by default * fix: address PR review — dream lock, MCP betas guard, redundant Partial - Call recordConsolidation() programmatically in /dream instead of delegating to model prompt (unreliable) - Add CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS guard to MCP entrypoint (was only in CLI entrypoint, causing 500s in MCP server mode) - Remove redundant ? markers from SecretValueSource Partial<{}> type --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
83 lines
2.5 KiB
TypeScript
83 lines
2.5 KiB
TypeScript
import { createHash } from 'crypto'
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import type { AssistantMessage, UserMessage } from '../types/message.js'
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/**
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* Hardcoded salt from backend validation.
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* Must match exactly for fingerprint validation to pass.
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*/
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export const FINGERPRINT_SALT = '59cf53e54c78'
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/**
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* Extracts text content from the first user message.
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*
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* @param messages - Array of internal message types
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* @returns First text content, or empty string if not found
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*/
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export function extractFirstMessageText(
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messages: (UserMessage | AssistantMessage)[],
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): string {
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// Skip isMeta messages (system-injected attachments) so the fingerprint
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// reflects the actual user input. On --resume, reorderAttachmentsForAPI
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// can bubble meta messages before the real first user message, changing
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// the fingerprint and breaking cache.
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const firstUserMessage =
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messages.find(msg => msg.type === 'user' && !msg.isMeta) ??
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messages.find(msg => msg.type === 'user')
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if (!firstUserMessage) {
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return ''
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}
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const content = firstUserMessage.message.content
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if (typeof content === 'string') {
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return content
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}
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if (Array.isArray(content)) {
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const textBlock = content.find(block => block.type === 'text')
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if (textBlock && textBlock.type === 'text') {
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return textBlock.text
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}
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}
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return ''
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}
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/**
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* Computes 3-character fingerprint for Claude Code attribution.
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* Algorithm: SHA256(SALT + msg[4] + msg[7] + msg[20] + version)[:3]
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* IMPORTANT: Do not change this method without careful coordination with
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* 1P and 3P (Bedrock, Vertex, Azure) APIs.
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*
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* @param messageText - First user message text content
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* @param version - Version string (from MACRO.VERSION)
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* @returns 3-character hex fingerprint
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*/
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export function computeFingerprint(
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messageText: string,
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version: string,
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): string {
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// Extract chars at indices [4, 7, 20], use "0" if index not found
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const indices = [4, 7, 20]
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const chars = indices.map(i => messageText[i] || '0').join('')
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const fingerprintInput = `${FINGERPRINT_SALT}${chars}${version}`
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// SHA256 hash, return first 3 hex chars
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const hash = createHash('sha256').update(fingerprintInput).digest('hex')
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return hash.slice(0, 3)
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}
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/**
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* Computes fingerprint from the first user message.
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*
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* @param messages - Array of normalized messages
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* @returns 3-character hex fingerprint
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*/
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export function computeFingerprintFromMessages(
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messages: (UserMessage | AssistantMessage)[],
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): string {
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const firstMessageText = extractFirstMessageText(messages)
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return computeFingerprint(firstMessageText, MACRO.VERSION)
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}
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