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fix: detect Claude Code version dynamically for OAuth user-agent#1670

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teknium1 merged 28 commits intomainfrom
hermes/hermes-6bb9911e
Mar 17, 2026
Merged

fix: detect Claude Code version dynamically for OAuth user-agent#1670
teknium1 merged 28 commits intomainfrom
hermes/hermes-6bb9911e

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Problem

_CLAUDE_CODE_VERSION in agent/anthropic_adapter.py was hardcoded to "2.1.2" but current Claude Code is 2.1.74+. Anthropic rejects OAuth requests when the spoofed user-agent version is too far behind, returning a generic 400 with just "Error" as the message — extremely hard to diagnose.

Reported by Jack, who tracked it down after persistent 400 errors with Anthropic OAuth.

Fix

Detect the installed Claude Code version dynamically via claude --version at import time. Falls back to a bumped static constant (2.1.74) when Claude Code isn't installed.

# Before
_CLAUDE_CODE_VERSION = "2.1.2"  # goes stale, causes silent 400s

# After  
_CLAUDE_CODE_VERSION = _detect_claude_code_version()  # auto-detects, falls back to 2.1.74

Verification

Detected: 2.1.74  (from installed claude binary)
Fallback: 2.1.74  (bumped from 2.1.2)

63 adapter tests pass (2 pre-existing credential-env failures excluded).

teknium1 and others added 28 commits March 17, 2026 01:45
When a gateway session exceeds the model's context window, Anthropic may
return a generic 400 invalid_request_error with just 'Error' as the
message.  This bypassed the phrase-based context-length detection,
causing the agent to treat it as a non-retryable client error.  Worse,
the failed user message was still persisted to the transcript, making
the session even larger on each attempt — creating an infinite loop.

Three-layer fix:

1. run_agent.py — Fallback heuristic: when a 400 error has a very short
   generic message AND the session is large (>40% of context or >80
   messages), treat it as a probable context overflow and trigger
   compression instead of aborting.

2. run_agent.py + gateway/run.py — Don't persist failed messages:
   when the agent returns failed=True before generating any response,
   skip writing the user's message to the transcript/DB. This prevents
   the session from growing on each failure.

3. gateway/run.py — Smarter error messages: detect context-overflow
   failures and suggest /compact or /reset specifically, instead of a
   generic 'try again' that will fail identically.
Adds two security layers to prevent prompt injection via skills hub
cache files (#1558):

1. read_file: blocks direct reads of ~/.hermes/skills/.hub/ directory
   (index-cache, catalog files). The 3.5MB clawhub_catalog_v1.json
   was the original injection vector — untrusted skill descriptions
   in the catalog contained adversarial text that the model executed.

2. skill_view: warns when skills are loaded from outside the trusted
   ~/.hermes/skills/ directory, and detects common injection patterns
   in skill content ("ignore previous instructions", "<system>", etc.).

Cherry-picked from PR #1562 by ygd58.
…1552)

Long messages sent via send_message tool or cron delivery silently
failed when exceeding platform limits. Gateway adapters handle this
via truncate_message(), but the standalone senders in send_message_tool
bypassed that entirely.

- Apply truncate_message() chunking in _send_to_platform() before
  dispatching to individual platform senders
- Remove naive message[i:i+2000] character split in _send_discord()
  in favor of centralized smart splitting
- Attach media files to last chunk only for Telegram
- Add regression tests for chunking and media placement

Cherry-picked from PR #1557 by llbn.
Previously the command was truncated to 80 chars in CLI (with a
[v]iew full option), 500 chars in Discord embeds, and missing entirely
in Telegram/Slack approval messages. Now the full command is always
displayed everywhere:

- CLI: removed 80-char truncation and [v]iew full menu option
- Gateway (TG/Slack): approval_required message includes full command
  in a code block
- Discord: embed shows full command up to 4096-char limit
- Windows: skip SIGALRM-based test timeout (Unix-only)
- Updated tests: replaced view-flow tests with direct approval tests

Cherry-picked from PR #1566 by crazywriter1.
…eze (#1624)

The interrupt polling loop in chat() waited on the queue without
invalidating the prompt_toolkit renderer. On macOS, the StdoutProxy
buffer only flushed on input events, causing the CLI to appear frozen
during tool execution until the user typed a key.

Fix: call _invalidate() on each queue timeout (every ~100ms, throttled
to 150ms) to force the renderer to flush buffered agent output.
…1580)

When --migrate-secrets is not passed (the default), API keys like
OPENROUTER_API_KEY are silently skipped with no warning. Users don't
realize their keys weren't migrated until the agent fails to connect.

Add a post-migration warning with actionable instructions: either
re-run with --migrate-secrets or add the key manually via
hermes config set.

Cherry-picked from PR #1593 by ygd58.
Add Modal and Daytona sandbox credentials to the subprocess env
blocklist so they're not leaked to agent terminal sessions via
printenv/env.

Cherry-picked from PR #1571 by ygd58.
…stion (#816)

When a user sends multiple messages while the agent keeps failing,
_run_agent() calls itself recursively with no depth limit. This can
exhaust stack/memory if the agent is in a failure loop.

Add _MAX_INTERRUPT_DEPTH = 3. When exceeded, the pending message is
logged and the current result is returned instead of recursing deeper.

The log handler duplication bug described in #816 was already fixed
separately (AIAgent.__init__ deduplicates handlers).
…fault (#1615)

When the agent falls back to a different model (e.g. due to rate
limiting), /model still showed the config default. Now tracks the
effective model/provider after each agent run and displays it.

Cleared when the primary model succeeds again or the user explicitly
switches via /model.

Cherry-picked from PR #1616 by MaxKerkula. Added hasattr guard for
test compatibility.
…lies (#1594)

When a user replies to a Telegram message, check if the quoted text
exists in the current session transcript. If missing (from cron jobs,
background tasks, or old sessions), prepend [Replying to: "..."] to
the message so the agent has context about what's being referenced.

- Add reply_to_text field to MessageEvent (base.py)
- Populate from Telegram's reply_to_message (text or caption)
- Inject context in _handle_message when not found in history

Based on PR #1596 by anpicasso (cherry-picked reply-to feature only,
excluded unrelated /server command and background delegation changes).
The _has_any_provider_configured() startup check didn't look for
Claude Code OAuth credentials (~/.claude/.credentials.json). Users
with only Claude Code auth got the setup wizard instead of starting.

Cherry-picked from PR #1455 by kshitijk4poor.
search_files(target='files') now uses rg --files -g instead of find.
Ripgrep respects .gitignore, excludes hidden dirs by default, and has
parallel directory traversal — ~200x faster on wide trees (0.14s vs 34s
benchmarked on 164-repo tree).

Falls back to find when rg is unavailable, preserving hidden-dir
exclusion and BSD find compatibility.

Salvaged from PR #1464 by @light-merlin-dark (Merlin) — adapted to
preserve hidden-dir exclusion added since the original PR.
… setup flow

Remove the optional skill (redundant now that NeuTTS is a built-in TTS
provider). Replace neutts_cli dependency with a standalone synthesis
helper (tools/neutts_synth.py) that calls the neutts Python API directly
in a subprocess.

Add TTS provider selection to hermes setup:
- 'hermes setup' now prompts for TTS provider after model selection
- 'hermes setup tts' available as standalone section
- Selecting NeuTTS checks for deps and offers to install:
  espeak-ng (system) + neutts[all] (pip)
- ElevenLabs/OpenAI selections prompt for API keys
- Tool status display shows NeuTTS install state

Changes:
- Remove optional-skills/mlops/models/neutts/ (skill + CLI scaffold)
- Add tools/neutts_synth.py (standalone synthesis subprocess helper)
- Move jo.wav/jo.txt to tools/neutts_samples/ (bundled default voice)
- Refactor _generate_neutts() — uses neutts API via subprocess, no
  neutts_cli dependency, config-driven ref_audio/ref_text/model/device
- Add TTS setup to hermes_cli/setup.py (SETUP_SECTIONS, tool status)
- Update config.py defaults (ref_audio, ref_text, model, device)
)

Docker terminal sessions are secret-dark by default. This adds
terminal.docker_forward_env as an explicit allowlist for env vars
that may be forwarded into Docker containers.

Values resolve from the current shell first, then fall back to
~/.hermes/.env. Only variables the user explicitly lists are
forwarded — nothing is auto-exposed.

Cherry-picked from PR #1449 by @teknium1, conflict-resolved onto
current main.

Fixes #1436
Supersedes #1439
- email.py: add missing metadata parameter to send_typing() to match
  BasePlatformAdapter signature (PR #1431 by @ItsChoudhry)
- README.md: ⚕ → ☤ — the caduceus is Hermes's staff, not the
  medical Staff of Asclepius (PR #1420 by @rianczerwinski)
WhatsApp now uses LID (Linked Identity Device) format alongside classic
@s.whatsapp.net. Self-chat detection checked only the classic format,
breaking self-chat mode for users on newer WhatsApp versions.

- Check both sock.user.id and sock.user.lid for self-chat detection
- Accept 'append' message type in addition to 'notify' (self-chat
  messages arrive as 'append')
- Track sent message IDs to prevent echo-back loops with media
- Add WHATSAPP_DEBUG env var for troubleshooting

Based on PR #1556 by jcorrego (manually applied due to cherry-pick
conflicts).
The _CLAUDE_CODE_VERSION was hardcoded to '2.1.2' but Anthropic
rejects OAuth requests when the spoofed user-agent version is too
far behind the current Claude Code release. The error is a generic
400 with just 'Error' as the message, making it very hard to diagnose.

Fix: detect the installed version via 'claude --version' at import
time, falling back to a bumped static constant (2.1.74) when Claude
Code isn't installed. This means users who keep Claude Code updated
never hit stale-version rejections.

Reported by Jack — changing the version string to match the installed
claude binary fixed persistent OAuth 400 errors immediately.
@teknium1 teknium1 merged commit d9d937b into main Mar 17, 2026
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