hermes-agent/gateway/platforms
Teknium 12afccd9ca
fix(tools): chunk long messages in send_message_tool before dispatch (#1552)
* fix: prevent infinite 400 failure loop on context overflow (#1630)

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.

* fix(skills): detect prompt injection patterns and block cache file reads

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.

* fix(tools): chunk long messages in send_message_tool before dispatch (#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.

---------

Co-authored-by: buray <ygd58@users.noreply.github.com>
Co-authored-by: lbn <llbn@users.noreply.github.com>
2026-03-17 01:52:43 -07:00
..
__init__.py Enhance CLI with multi-platform messaging integration and configuration management 2026-02-02 19:01:51 -08:00
ADDING_A_PLATFORM.md docs: finish cron terminology cleanup 2026-03-14 19:20:58 -07:00
base.py fix(tools): chunk long messages in send_message_tool before dispatch (#1552) 2026-03-17 01:52:43 -07:00
discord.py feat(discord): auto-thread on @mention + skip mention in bot threads 2026-03-15 07:59:55 -07:00
email.py feat(email): add skip_attachments option via config.yaml 2026-03-16 05:27:54 -07:00
homeassistant.py fix: Home Assistant event filtering now closed by default (#1169) 2026-03-13 07:40:38 -07:00
signal.py fix(signal): align send() signature with base class (content, reply_to, metadata) 2026-03-10 15:18:26 -07:00
slack.py refactor: centralize slash command registry (#1603) 2026-03-16 23:21:03 -07:00
telegram.py refactor: centralize slash command registry (#1603) 2026-03-16 23:21:03 -07:00
whatsapp.py fix(cli): respect HERMES_HOME in all remaining hardcoded ~/.hermes paths 2026-03-13 21:32:53 -07:00