fujin/anthropic-proxy
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0df28e9dd8603b7a70466397aedc43cea1de6b6c
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8 Commits

Author SHA1 Message Date
Alexander 0df28e9dd8 refactor: modularize codebase — deduplicate, extract, clean up 
- Unify duplicate uTLS transports into shared internal/transport package
- Extract shared version constant into internal/version
- Move LoadDefaultCredentials from config to auth (remove config→auth import)
- Deduplicate handler.go: extract telemetry/error helpers (324→268 lines)
- Break up main.go::run() into initCredential/initEmbedded
- Eliminate logging.Config duplication (use config.LoggingConfig directly)
- Extract logWriter to embedded/log.go, SSE fixtures to consts in sniff.go
- Use uTLS client for usage polling (consistent TLS fingerprint)
- Handle sjson.SetBytes errors in sanitize.go instead of silently swallowing
- Document reverse-engineered magic values in billing.go
- Unexport Credential.CooldownUntil (internal state)
- Replace hardcoded auth bypass paths with map in server.go
 2026-04-15 11:01:29 +02:00
Alexander 76aeeb6be1 fix(auth): add oauth-2025-04-20 beta header + debug logging 
Ensure anthropic-beta includes oauth-2025-04-20 when using OAuth tokens,
fixing 401 "OAuth authentication is currently not supported" errors.
Add debug-level logging for upstream requests/responses, sniffed headers,
and token refresh operations.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-14 11:08:08 +02:00
Alexander da59d8f83b refactor(auth): migrate to zerolog structured logging 2026-04-10 18:19:13 +02:00
Alexander 9858530ff6 fix(auth): handle credential file creation in persistCredential 2026-04-10 14:14:42 +02:00
Alexander 4abd4e68dc Fixes, readme 
Drop cli-proxy-api token handling, use only native Claude credentials.
Simplify refresh to single endpoint (platform.claude.com) with scope.
Add debug/refresh and debug/shutdown endpoints. Graceful shutdown.
 2026-04-10 12:56:42 +02:00
Alexander f22765d8f0 Fixes, readme 2026-04-09 23:06:17 +02:00
Alexander 909c8b1894 Add request sanitizer, background token refresh, and OpenCode support 
Sanitizer renames tool names and replaces system prompt patterns
that Anthropic fingerprints to detect non-Claude-Code clients.
Lowercase tool names (bash, read, glob, etc.) combined together
trigger rejection — renaming to PascalCase bypasses this.
Configurable via YAML sanitize rules for tools, system, and body.

Background OAuth token refresh every 30s with 5-minute pre-expiry
lead. Uses Chrome TLS fingerprint for refresh endpoint too.

Adds /messages route (without /v1 prefix) for OpenCode compat.
 2026-04-09 22:52:43 +02:00
Alexander c4c1d4daa4 Anthropic API proxy with OAuth credential rotation and Claude Code fingerprinting 
Sniffs a real Claude Code request on startup to capture exact HTTP headers,
then replays them for all proxied requests. Injects the billing header with
per-request SHA256 fingerprint into the system prompt. Uses utls with Chrome
TLS fingerprint to pass Cloudflare's bot detection on api.anthropic.com.

Supports both streaming (SSE) and non-streaming modes, round-robin credential
selection with automatic failover, and loading OAuth tokens from both
cli-proxy-api auth files and native ~/.claude/.credentials.json.
 2026-04-09 21:05:32 +02:00