Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add iviaxpow3r/herdr-session-parker --skill herdr-session-parkergit clone --depth 1 https://github.com/iviaxpow3r/herdr-session-parkerWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/iviaxpow3r/herdr-session-parker/herdr-session-parker)<a href="https://agentmods.dev/skills/iviaxpow3r/herdr-session-parker/herdr-session-parker"><img src="https://agentmods.dev/badge/skills/iviaxpow3r/herdr-session-parker/herdr-session-parker/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/iviaxpow3r/herdr-session-parker/herdr-session-parker"><img src="https://agentmods.dev/badge/skills/iviaxpow3r/herdr-session-parker/herdr-session-parker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00058 | $0.01167 |
| Opus 5 | $0.00029 | $0.00583 |
| Sonnet 5 | $0.00012 | $0.00233 |
| Haiku 4.5 | $0.00006 | $0.00117 |
Grade A, and why
herdr-session-parker scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Herdr Session Parker
Use this skill when Herdr tabs should act like lightweight bookmarks for expensive running agent panes.
Plugin basics
Install:
herdr plugin install iviaxpow3r/herdr-session-parker
Plugin id:
herdr-session-parker
Runtime registry:
~/.local/state/herdr/plugins/herdr-session-parker/parked-sessions.json
The registry can contain local paths, tab labels, session IDs, and captured foreground commands. Do not publish a user's registry.
Actions
herdr plugin action list --plugin herdr-session-parker
herdr plugin action invoke herdr-session-parker.list-parked
herdr plugin action invoke herdr-session-parker.snapshot-current
herdr plugin action invoke herdr-session-parker.park-current-pane
herdr plugin action invoke herdr-session-parker.park-current-tab
herdr plugin action invoke herdr-session-parker.resume-current
Use plugin actions only when the user truly means the currently focused Herdr tab/pane. For non-current targets, use the direct script with --pane <pane_id> so you do not steal focus.
Agent workflow
Before parking/resuming:
herdr status
herdr pane list
herdr agent list
herdr plugin action list --plugin herdr-session-parker
For automatic resume, target panes need a supported Herdr agent_session.value. If OpenCode is missing a session id, install/reinstall the Herdr integration and restart/resume the pane first:
herdr integration install opencode
herdr integration status
Target non-current panes without changing focus
Preferred workflow when the user names a workspace/tab/pane that is not the current focus:
- Identify the target from Herdr state:
herdr tab list
herdr pane list
- Dry-run the exact targeted operation:
python3 /path/to/session_parker.py snapshot-current --pane <pane_id> --dry-run
python3 /path/to/session_parker.py park-current-tab --pane <pane_id> --dry-run
python3 /path/to/session_parker.py resume-current --pane <pane_id> --dry-run
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago First seen · 170 lines · 58 tokens per session scan A 25039ead3e88
herdr-session-parker is a skill published in the GitHub repository iviaxpow3r/herdr-session-parker (11 stars, last pushed 2mo ago), licensed MIT. It adds 58 tokens to every session and 1,167 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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