Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add gtapps/hermitd/plugin install hermitd-fitnessWrote 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/gtapps/hermitd/fitness-brief)<a href="https://agentmods.dev/skills/gtapps/hermitd/fitness-brief"><img src="https://agentmods.dev/badge/skills/gtapps/hermitd/fitness-brief/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/gtapps/hermitd/fitness-brief"><img src="https://agentmods.dev/badge/skills/gtapps/hermitd/fitness-brief.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 | $0.00111 | $0.01741 |
| Opus 5.5 | $0.00044 | $0.00696 |
| Sonnet 5.5 | $0.00022 | $0.00348 |
| Haiku 4.5 | $0.00011 | $0.00174 |
Grade A, and why
fitness-brief 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 — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Fitness Brief
One skill, two lenses on the same athlete's training state. Composition is intent-driven, not scripted: gather a bounded digest, then write the brief toward the goal below in the operator's configured voice — there is no fixed section order, no hardcoded tone, and no mandatory rest-day copy.
Flags
--morning: slotmorning. Forward-looking.--evening: slotevening. Backward-looking.--slot <name>: custom slot label; orientation defaults to forward-looking unless the operator's own conventions say otherwise.
Resolve <slot> from the flag before starting. Filenames below use that resolved value.
Steps below say "Morning"/"Evening" as shorthand for forward-looking/backward-looking
orientation — a custom --slot follows whichever branch matches its resolved orientation.
Steps
- Connectivity + sync mechanics. These fold in what
strava-health-checkandstrava-syncused to run on their own crons — this brief now owns that beat.- Call
mcp__strava__check-strava-connection. If disconnected: say so plainly in the brief and skip the data-dependent parts below rather than fabricating figures. - Evening only: call
mcp__strava__get-recent-activities(perPage: 5), compare againststate/strava-last-activity-id.txt(treat missing as "none"), and for any new activity whose StravatypeisRun, invoke/hermitd-fitness:activity-deep-dive <id>(cap 3; inside an open record's turn, pipe skipped IDs into.hermit/bin/hermitd-run task note .hermit <task-id>, otherwise skip the note). Advance the cursor file to the highest new ID. Hold the newest new activity's id/name/sport for step 4 — do not writestate/strava-pending-rpe.jsonhere. That file's writer contract (see${CLAUDE_PLUGIN_ROOT}/docs/knowledge-schema.mdandCLAUDE.md§ Memory Conventions) is write-only-after-confirmed-delivery, precisely so a failed or push-only send can't bind a future RPE reply to an activity the operator was never actually told about.
- Call
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 · 114 lines · 111 tokens per session scan A a23268fe7ad7
fitness-brief is a skill published in the GitHub repository gtapps/hermitd (79 stars, last pushed today), licensed MIT. It adds 111 tokens to every session and 1,741 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-10-02.
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