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 Marcel-Bich/marcel-bich-claude-marketplace/plugin install credoWrote 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/commands/marcel-bich/marcel-bich-claude-marketplace/session-active)<a href="https://agentmods.dev/commands/marcel-bich/marcel-bich-claude-marketplace/session-active"><img src="https://agentmods.dev/badge/commands/marcel-bich/marcel-bich-claude-marketplace/session-active/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/commands/marcel-bich/marcel-bich-claude-marketplace/session-active"><img src="https://agentmods.dev/badge/commands/marcel-bich/marcel-bich-claude-marketplace/session-active.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 | $0.00020 | $0.00595 |
| Opus 5.5 | $0.00008 | $0.00238 |
| Sonnet 5.5 | $0.00004 | $0.00119 |
| Haiku 4.5 | $0.00002 | $0.00060 |
Grade A, and why
session-active 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 13d 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.
What it actually says
Session Mode: active
Set the persistent, per-session credo mode to active.
- Run:
${CLAUDE_PLUGIN_ROOT}/hooks/session-mode-set.sh activeThis writes the per-session state (keyed by the current session_id) and turns the keep-alive autonomy OFF for THIS session only (removescredo/autonomy/<session_id>/active, setscredo/autonomy/<session_id>/pausedunder the Claude config dir). Other sessions are never affected. - Record the credo decision as accepted:
${CLAUDE_PLUGIN_ROOT}/scripts/credo-decision-set.sh acceptedSetting a mode means credo is opted in, so this makes the acceptance durable (its knowledge is re-fed after resets even if the mode is ever cleared). - Remember this directory as opted-in (persistent, per-directory), so a future session here
skips the onboarding ASK - the same effect as accepting the ASK:
${CLAUDE_PLUGIN_ROOT}/scripts/credo-dir-decision.sh set accepted - Load the skill
session-activeand work by its rules from now on. - Load the
itemsskill now (the credo work-item model and done-gate), UNLESS it is already active in your current context - do not reload it if you already have it. This puts the item model and go-gate in context from the start, instead of only when something later happens to trigger them. - End any autonomy wake-up chain: if this session scheduled wake-ups while autonomous
(ScheduleWakeup), call ScheduleWakeup with
stop: truenow, and CronDelete any CronCreate job it set for the run. A wake that still fires later is dropped by the credo-autonomy-clear hook (backstop), but do not rely on it. - Apply the main-agent prompt of the active preset once: run
"${CLAUDE_PLUGIN_ROOT}/scripts/credo-preset.sh" mainagent --field promptand follow its output for the rest of this session. The SessionStart hook injects the same text only at a fresh start, not when the mode is switched mid-session. Empty output means the preset has no main-agent instruction. - Confirm briefly: mode active, keep-alive off.
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.
- 13d ago Changed · +2 lines a7be70372074
- 15d ago Changed · +4 lines 336a9649c71f
- 18d ago Changed · +1 lines 91cbd51e36e0
- 1mo ago First seen · 30 lines · 20 tokens per session scan A f67264633bf6
session-active is a command published in the GitHub repository Marcel-Bich/marcel-bich-claude-marketplace (12 stars, last pushed yesterday), licensed MIT. It adds 20 tokens to every session and 595 once invoked, about $0.0001 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 2026-08-30.
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