mirror of
https://github.com/NousResearch/hermes-agent.git
synced 2026-05-02 16:57:36 +08:00
Broad drift audit against origin/main (b52b63396).
Reference pages (most user-visible drift):
- slash-commands: add /busy, /curator, /footer, /indicator, /redraw, /steer
that were missing; drop non-existent /terminal-setup; fix /q footnote
(resolves to /queue, not /quit); extend CLI-only list with all 24
CLI-only commands in the registry
- cli-commands: add dedicated sections for hermes curator / fallback /
hooks (new subcommands not previously documented); remove stale
hermes honcho standalone section (the plugin registers dynamically
via hermes memory); list curator/fallback/hooks in top-level table;
fix completion to include fish
- toolsets-reference: document the real 52-toolset count; split browser
vs browser-cdp; add discord / discord_admin / spotify / yuanbao;
correct hermes-cli tool count from 36 to 38; fix misleading claim
that hermes-homeassistant adds tools (it's identical to hermes-cli)
- tools-reference: bump tool count 55 -> 68; add 7 Spotify, 5 Yuanbao,
2 Discord toolsets; move browser_cdp/browser_dialog to their own
browser-cdp toolset section
- environment-variables: add 40+ user-facing HERMES_* vars that were
undocumented (--yolo, --accept-hooks, --ignore-*, inference model
override, agent/stream/checkpoint timeouts, OAuth trace, per-platform
batch tuning for Telegram/Discord/Matrix/Feishu/WeCom, cron knobs,
gateway restart/connect timeouts); dedupe the Cron Scheduler section;
replace stale QQ_SANDBOX with QQ_PORTAL_HOST
User-guide (top level):
- cli.md: compression preserves last 20 turns, not 4 (protect_last_n: 20)
- configuration.md: display.platforms is the canonical per-platform
override key; tool_progress_overrides is deprecated and auto-migrated
- profiles.md: model.default is the config key, not model.model
- sessions.md: CLI/TUI session IDs use 6-char hex, gateway uses 8
- checkpoints-and-rollback.md: destructive-command list now matches
_DESTRUCTIVE_PATTERNS (adds rmdir, cp, install, dd)
- docker.md: the container runs as non-root hermes (UID 10000) via
gosu; fix install command (uv pip); add missing --insecure on the
dashboard compose example (required for non-loopback bind)
- security.md: systemctl danger pattern also matches 'restart'
- index.md: built-in tool count 47 -> 68
- integrations/index.md: 6 STT providers, 8 memory providers
- integrations/providers.md: drop fictional dashscope/qwen aliases
Features:
- overview.md: 9 image models (not 8), 9 TTS providers (not 5),
8 memory providers (Supermemory was missing)
- tool-gateway.md: 9 image models
- tools.md: extend common-toolsets list with search / messaging /
spotify / discord / debugging / safe
- fallback-providers.md: add 6 real providers from PROVIDER_REGISTRY
(lmstudio, kimi-coding-cn, stepfun, alibaba-coding-plan,
tencent-tokenhub, azure-foundry)
- plugins.md: Available Hooks table now includes on_session_finalize,
on_session_reset, subagent_stop
- built-in-plugins.md: add the 7 bundled plugins the page didn't
mention (spotify, google_meet, three image_gen providers, two
dashboard examples)
- web-dashboard.md: add --insecure and --tui flags
- cron.md: hermes cron create takes positional schedule/prompt, not
flags
Messaging:
- telegram.md: TELEGRAM_WEBHOOK_SECRET is now REQUIRED when
TELEGRAM_WEBHOOK_URL is set (gateway refuses to start without it
per GHSA-3vpc-7q5r-276h). Biggest user-visible drift in the batch.
- discord.md: HERMES_DISCORD_TEXT_BATCH_SPLIT_DELAY_SECONDS default
is 2.0, not 0.1
- dingtalk.md: document DINGTALK_REQUIRE_MENTION /
FREE_RESPONSE_CHATS / MENTION_PATTERNS / HOME_CHANNEL /
ALLOW_ALL_USERS that the adapter supports
- bluebubbles.md: drop fictional BLUEBUBBLES_SEND_READ_RECEIPTS env
var; the setting lives in platforms.bluebubbles.extra only
- qqbot.md: drop dead QQ_SANDBOX; add real QQ_PORTAL_HOST and
QQ_GROUP_ALLOWED_USERS
- wecom-callback.md: replace 'hermes gateway start' (service-only)
with 'hermes gateway' for first-time setup
Developer-guide:
- architecture.md: refresh tool/toolset counts (61/52), terminal
backend count (7), line counts for run_agent.py (~13.7k), cli.py
(~11.5k), main.py (~10.4k), setup.py (~3.5k), gateway/run.py
(~12.2k), mcp_tool.py (~3.1k); add yuanbao adapter, bump platform
adapter count 18 -> 20
- agent-loop.md: run_agent.py line count 10.7k -> 13.7k
- tools-runtime.md: add vercel_sandbox backend
- adding-tools.md: remove stale 'Discovery import added to
model_tools.py' checklist item (registry auto-discovery)
- adding-platform-adapters.md: mark send_typing / get_chat_info as
concrete base methods; only connect/disconnect/send are abstract
- acp-internals.md: ACP sessions now persist to SessionDB
(~/.hermes/state.db); acp.run_agent call uses
use_unstable_protocol=True
- cron-internals.md: gateway runs scheduler in a dedicated background
thread via _start_cron_ticker, not on a maintenance cycle; locking
is cross-process via fcntl.flock (Unix) / msvcrt.locking (Windows)
- gateway-internals.md: gateway/run.py ~12k lines
- provider-runtime.md: cron DOES support fallback (run_job reads
fallback_providers from config)
- session-storage.md: SCHEMA_VERSION = 11 (not 9); add migrations
10 and 11 (trigram FTS, inline-mode FTS5 re-index); add
api_call_count column to Sessions DDL; document messages_fts_trigram
and state_meta in the architecture tree
- context-compression-and-caching.md: remove the obsolete 'context
pressure warnings' section (warnings were removed for causing
models to give up early)
- context-engine-plugin.md: compress() signature now includes
focus_topic param
- extending-the-cli.md: _build_tui_layout_children signature now
includes model_picker_widget; add to default layout
Also fixed three pre-existing broken links/anchors the build warned
about (docker.md -> api-server.md, yuanbao.md -> cron-jobs.md and
tips#background-tasks, nix-setup.md -> #container-aware-cli).
Regenerated per-skill pages via website/scripts/generate-skill-docs.py
so catalog tables and sidebar are consistent with current SKILL.md
frontmatter.
docusaurus build: clean, no broken links or anchors.
422 lines
16 KiB
Markdown
422 lines
16 KiB
Markdown
---
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sidebar_position: 7
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title: "Sessions"
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description: "Session persistence, resume, search, management, and per-platform session tracking"
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---
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# Sessions
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Hermes Agent automatically saves every conversation as a session. Sessions enable conversation resume, cross-session search, and full conversation history management.
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## How Sessions Work
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Every conversation — whether from the CLI, Telegram, Discord, Slack, WhatsApp, Signal, Matrix, or any other messaging platform — is stored as a session with full message history. Sessions are tracked in two complementary systems:
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1. **SQLite database** (`~/.hermes/state.db`) — structured session metadata with FTS5 full-text search
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2. **JSONL transcripts** (`~/.hermes/sessions/`) — raw conversation transcripts including tool calls (gateway)
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The SQLite database stores:
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- Session ID, source platform, user ID
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- **Session title** (unique, human-readable name)
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- Model name and configuration
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- System prompt snapshot
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- Full message history (role, content, tool calls, tool results)
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- Token counts (input/output)
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- Timestamps (started_at, ended_at)
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- Parent session ID (for compression-triggered session splitting)
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### Session Sources
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Each session is tagged with its source platform:
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| Source | Description |
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|--------|-------------|
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| `cli` | Interactive CLI (`hermes` or `hermes chat`) |
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| `telegram` | Telegram messenger |
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| `discord` | Discord server/DM |
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| `slack` | Slack workspace |
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| `whatsapp` | WhatsApp messenger |
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| `signal` | Signal messenger |
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| `matrix` | Matrix rooms and DMs |
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| `mattermost` | Mattermost channels |
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| `email` | Email (IMAP/SMTP) |
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| `sms` | SMS via Twilio |
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| `dingtalk` | DingTalk messenger |
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| `feishu` | Feishu/Lark messenger |
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| `wecom` | WeCom (WeChat Work) |
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| `weixin` | Weixin (personal WeChat) |
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| `bluebubbles` | Apple iMessage via BlueBubbles macOS server |
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| `qqbot` | QQ Bot (Tencent QQ) via Official API v2 |
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| `homeassistant` | Home Assistant conversation |
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| `webhook` | Incoming webhooks |
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| `api-server` | API server requests |
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| `acp` | ACP editor integration |
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| `cron` | Scheduled cron jobs |
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| `batch` | Batch processing runs |
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## CLI Session Resume
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Resume previous conversations from the CLI using `--continue` or `--resume`:
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### Continue Last Session
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```bash
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# Resume the most recent CLI session
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hermes --continue
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hermes -c
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# Or with the chat subcommand
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hermes chat --continue
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hermes chat -c
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```
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This looks up the most recent `cli` session from the SQLite database and loads its full conversation history.
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### Resume by Name
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If you've given a session a title (see [Session Naming](#session-naming) below), you can resume it by name:
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```bash
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# Resume a named session
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hermes -c "my project"
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# If there are lineage variants (my project, my project #2, my project #3),
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# this automatically resumes the most recent one
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hermes -c "my project" # → resumes "my project #3"
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```
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### Resume Specific Session
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```bash
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# Resume a specific session by ID
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hermes --resume 20250305_091523_a1b2c3d4
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hermes -r 20250305_091523_a1b2c3d4
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# Resume by title
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hermes --resume "refactoring auth"
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# Or with the chat subcommand
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hermes chat --resume 20250305_091523_a1b2c3d4
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```
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Session IDs are shown when you exit a CLI session, and can be found with `hermes sessions list`.
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### Conversation Recap on Resume
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When you resume a session, Hermes displays a compact recap of the previous conversation in a styled panel before the input prompt:
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<img className="docs-terminal-figure" src="/img/docs/session-recap.svg" alt="Stylized preview of the Previous Conversation recap panel shown when resuming a Hermes session." />
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<p className="docs-figure-caption">Resume mode shows a compact recap panel with recent user and assistant turns before returning you to the live prompt.</p>
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The recap:
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- Shows **user messages** (gold `●`) and **assistant responses** (green `◆`)
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- **Truncates** long messages (300 chars for user, 200 chars / 3 lines for assistant)
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- **Collapses tool calls** to a count with tool names (e.g., `[3 tool calls: terminal, web_search]`)
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- **Hides** system messages, tool results, and internal reasoning
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- **Caps** at the last 10 exchanges with a "... N earlier messages ..." indicator
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- Uses **dim styling** to distinguish from the active conversation
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To disable the recap and keep the minimal one-liner behavior, set in `~/.hermes/config.yaml`:
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```yaml
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display:
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resume_display: minimal # default: full
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```
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:::tip
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Session IDs follow the format `YYYYMMDD_HHMMSS_<hex>` — CLI/TUI sessions use a 6-char hex suffix (e.g. `20250305_091523_a1b2c3`), gateway sessions use an 8-char suffix (e.g. `20250305_091523_a1b2c3d4`). You can resume by ID (full or unique prefix) or by title — both work with `-c` and `-r`.
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:::
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## Session Naming
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Give sessions human-readable titles so you can find and resume them easily.
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### Auto-Generated Titles
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Hermes automatically generates a short descriptive title (3–7 words) for each session after the first exchange. This runs in a background thread using a fast auxiliary model, so it adds no latency. You'll see auto-generated titles when browsing sessions with `hermes sessions list` or `hermes sessions browse`.
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Auto-titling only fires once per session and is skipped if you've already set a title manually.
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### Setting a Title Manually
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Use the `/title` slash command inside any chat session (CLI or gateway):
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```
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/title my research project
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```
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The title is applied immediately. If the session hasn't been created in the database yet (e.g., you run `/title` before sending your first message), it's queued and applied once the session starts.
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You can also rename existing sessions from the command line:
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```bash
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hermes sessions rename 20250305_091523_a1b2c3d4 "refactoring auth module"
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```
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### Title Rules
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- **Unique** — no two sessions can share the same title
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- **Max 100 characters** — keeps listing output clean
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- **Sanitized** — control characters, zero-width chars, and RTL overrides are stripped automatically
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- **Normal Unicode is fine** — emoji, CJK, accented characters all work
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### Auto-Lineage on Compression
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When a session's context is compressed (manually via `/compress` or automatically), Hermes creates a new continuation session. If the original had a title, the new session automatically gets a numbered title:
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```
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"my project" → "my project #2" → "my project #3"
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```
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When you resume by name (`hermes -c "my project"`), it automatically picks the most recent session in the lineage.
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### /title in Messaging Platforms
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The `/title` command works in all gateway platforms (Telegram, Discord, Slack, WhatsApp):
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- `/title My Research` — set the session title
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- `/title` — show the current title
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## Session Management Commands
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Hermes provides a full set of session management commands via `hermes sessions`:
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### List Sessions
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```bash
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# List recent sessions (default: last 20)
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hermes sessions list
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# Filter by platform
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hermes sessions list --source telegram
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# Show more sessions
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hermes sessions list --limit 50
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```
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When sessions have titles, the output shows titles, previews, and relative timestamps:
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```
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Title Preview Last Active ID
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────────────────────────────────────────────────────────────────────────────────────────────────
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refactoring auth Help me refactor the auth module please 2h ago 20250305_091523_a
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my project #3 Can you check the test failures? yesterday 20250304_143022_e
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— What's the weather in Las Vegas? 3d ago 20250303_101500_f
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```
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When no sessions have titles, a simpler format is used:
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```
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Preview Last Active Src ID
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──────────────────────────────────────────────────────────────────────────────────────
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Help me refactor the auth module please 2h ago cli 20250305_091523_a
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What's the weather in Las Vegas? 3d ago tele 20250303_101500_f
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```
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### Export Sessions
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```bash
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# Export all sessions to a JSONL file
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hermes sessions export backup.jsonl
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# Export sessions from a specific platform
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hermes sessions export telegram-history.jsonl --source telegram
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# Export a single session
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hermes sessions export session.jsonl --session-id 20250305_091523_a1b2c3d4
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```
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Exported files contain one JSON object per line with full session metadata and all messages.
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### Delete a Session
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```bash
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# Delete a specific session (with confirmation)
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hermes sessions delete 20250305_091523_a1b2c3d4
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# Delete without confirmation
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hermes sessions delete 20250305_091523_a1b2c3d4 --yes
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```
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### Rename a Session
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```bash
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# Set or change a session's title
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hermes sessions rename 20250305_091523_a1b2c3d4 "debugging auth flow"
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# Multi-word titles don't need quotes in the CLI
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hermes sessions rename 20250305_091523_a1b2c3d4 debugging auth flow
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```
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If the title is already in use by another session, an error is shown.
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### Prune Old Sessions
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```bash
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# Delete ended sessions older than 90 days (default)
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hermes sessions prune
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# Custom age threshold
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hermes sessions prune --older-than 30
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# Only prune sessions from a specific platform
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hermes sessions prune --source telegram --older-than 60
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# Skip confirmation
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hermes sessions prune --older-than 30 --yes
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```
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:::info
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Pruning only deletes **ended** sessions (sessions that have been explicitly ended or auto-reset). Active sessions are never pruned.
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:::
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### Session Statistics
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```bash
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hermes sessions stats
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```
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Output:
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```
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Total sessions: 142
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Total messages: 3847
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cli: 89 sessions
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telegram: 38 sessions
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discord: 15 sessions
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Database size: 12.4 MB
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```
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For deeper analytics — token usage, cost estimates, tool breakdown, and activity patterns — use [`hermes insights`](/docs/reference/cli-commands#hermes-insights).
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## Session Search Tool
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The agent has a built-in `session_search` tool that performs full-text search across all past conversations using SQLite's FTS5 engine.
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### How It Works
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1. FTS5 searches matching messages ranked by relevance
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2. Groups results by session, takes the top N unique sessions (default 3)
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3. Loads each session's conversation, truncates to ~100K chars centered on matches
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4. Sends to a fast summarization model for focused summaries
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5. Returns per-session summaries with metadata and surrounding context
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### FTS5 Query Syntax
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The search supports standard FTS5 query syntax:
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- Simple keywords: `docker deployment`
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- Phrases: `"exact phrase"`
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- Boolean: `docker OR kubernetes`, `python NOT java`
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- Prefix: `deploy*`
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### When It's Used
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The agent is prompted to use session search automatically:
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> *"When the user references something from a past conversation or you suspect relevant prior context exists, use session_search to recall it before asking them to repeat themselves."*
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## Per-Platform Session Tracking
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### Gateway Sessions
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On messaging platforms, sessions are keyed by a deterministic session key built from the message source:
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| Chat Type | Default Key Format | Behavior |
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|-----------|--------------------|----------|
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| Telegram DM | `agent:main:telegram:dm:<chat_id>` | One session per DM chat |
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| Discord DM | `agent:main:discord:dm:<chat_id>` | One session per DM chat |
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| WhatsApp DM | `agent:main:whatsapp:dm:<canonical_identifier>` | One session per DM user (LID/phone aliases collapse to one identity when mapping exists) |
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| Group chat | `agent:main:<platform>:group:<chat_id>:<user_id>` | Per-user inside the group when the platform exposes a user ID |
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| Group thread/topic | `agent:main:<platform>:group:<chat_id>:<thread_id>` | Shared session for all thread participants (default). Per-user with `thread_sessions_per_user: true`. |
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| Channel | `agent:main:<platform>:channel:<chat_id>:<user_id>` | Per-user inside the channel when the platform exposes a user ID |
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When Hermes cannot get a participant identifier for a shared chat, it falls back to one shared session for that room.
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### Shared vs Isolated Group Sessions
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By default, Hermes uses `group_sessions_per_user: true` in `config.yaml`. That means:
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- Alice and Bob can both talk to Hermes in the same Discord channel without sharing transcript history
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- one user's long tool-heavy task does not pollute another user's context window
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- interrupt handling also stays per-user because the running-agent key matches the isolated session key
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If you want one shared "room brain" instead, set:
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```yaml
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group_sessions_per_user: false
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```
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That reverts groups/channels to a single shared session per room, which preserves shared conversational context but also shares token costs, interrupt state, and context growth.
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### Session Reset Policies
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Gateway sessions are automatically reset based on configurable policies:
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- **idle** — reset after N minutes of inactivity
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- **daily** — reset at a specific hour each day
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- **both** — reset on whichever comes first (idle or daily)
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- **none** — never auto-reset
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Before a session is auto-reset, the agent is given a turn to save any important memories or skills from the conversation.
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Sessions with **active background processes** are never auto-reset, regardless of policy.
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## Storage Locations
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| What | Path | Description |
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|------|------|-------------|
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| SQLite database | `~/.hermes/state.db` | All session metadata + messages with FTS5 |
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| Gateway transcripts | `~/.hermes/sessions/` | JSONL transcripts per session + sessions.json index |
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| Gateway index | `~/.hermes/sessions/sessions.json` | Maps session keys to active session IDs |
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The SQLite database uses WAL mode for concurrent readers and a single writer, which suits the gateway's multi-platform architecture well.
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### Database Schema
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Key tables in `state.db`:
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- **sessions** — session metadata (id, source, user_id, model, title, timestamps, token counts). Titles have a unique index (NULL titles allowed, only non-NULL must be unique).
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- **messages** — full message history (role, content, tool_calls, tool_name, token_count)
|
||
- **messages_fts** — FTS5 virtual table for full-text search across message content
|
||
|
||
## Session Expiry and Cleanup
|
||
|
||
### Automatic Cleanup
|
||
|
||
- Gateway sessions auto-reset based on the configured reset policy
|
||
- Before reset, the agent saves memories and skills from the expiring session
|
||
- Opt-in auto-pruning: when `sessions.auto_prune` is `true`, ended sessions older than `sessions.retention_days` (default 90) are pruned at CLI/gateway startup
|
||
- After a prune that actually removed rows, `state.db` is `VACUUM`ed to reclaim disk space (SQLite does not shrink the file on plain DELETE)
|
||
- Pruning runs at most once per `sessions.min_interval_hours` (default 24); the last-run timestamp is tracked inside `state.db` itself so it's shared across every Hermes process in the same `HERMES_HOME`
|
||
|
||
Default is **off** — session history is valuable for `session_search` recall, and silently deleting it could surprise users. Enable in `~/.hermes/config.yaml`:
|
||
|
||
```yaml
|
||
sessions:
|
||
auto_prune: true # opt in — default is false
|
||
retention_days: 90 # keep ended sessions this many days
|
||
vacuum_after_prune: true # reclaim disk space after a pruning sweep
|
||
min_interval_hours: 24 # don't re-run the sweep more often than this
|
||
```
|
||
|
||
Active sessions are never auto-pruned, regardless of age.
|
||
|
||
### Manual Cleanup
|
||
|
||
```bash
|
||
# Prune sessions older than 90 days
|
||
hermes sessions prune
|
||
|
||
# Delete a specific session
|
||
hermes sessions delete <session_id>
|
||
|
||
# Export before pruning (backup)
|
||
hermes sessions export backup.jsonl
|
||
hermes sessions prune --older-than 30 --yes
|
||
```
|
||
|
||
:::tip
|
||
The database grows slowly (typical: 10-15 MB for hundreds of sessions) and session history powers `session_search` recall across past conversations, so auto-prune ships disabled. Enable it if you're running a heavy gateway/cron workload where `state.db` is meaningfully affecting performance (observed failure mode: 384 MB state.db with ~1000 sessions slowing down FTS5 inserts and `/resume` listing). Use `hermes sessions prune` for one-off cleanup without turning on the automatic sweep.
|
||
:::
|