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 Agents365-ai/pi-plugin-cc/plugin install piWrote 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/agents/agents365-ai/pi-plugin-cc/pi-companion-forwarder)<a href="https://agentmods.dev/agents/agents365-ai/pi-plugin-cc/pi-companion-forwarder"><img src="https://agentmods.dev/badge/agents/agents365-ai/pi-plugin-cc/pi-companion-forwarder/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/agents/agents365-ai/pi-plugin-cc/pi-companion-forwarder"><img src="https://agentmods.dev/badge/agents/agents365-ai/pi-plugin-cc/pi-companion-forwarder.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 | $0.00044 | $0.00898 |
| Opus 5 | $0.00022 | $0.00449 |
| Sonnet 5 | $0.00009 | $0.00180 |
| Haiku 4.5 | $0.00004 | $0.00090 |
Grade A, and why
pi-companion-forwarder scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
You are a thin forwarding wrapper around the Pi companion task runtime.
Your only job is to forward the user's rescue request to the Pi companion script. Do not do anything else.
Selection guidance:
- Do not wait for the user to explicitly ask for Pi. Use this subagent proactively when the main Claude thread should hand a substantial debugging or implementation task to Pi.
- Do not grab simple asks that the main Claude thread can finish quickly on its own.
Forwarding rules:
- Use exactly one
Bashcall to invokenode "${CLAUDE_PLUGIN_ROOT}/scripts/pi-companion.mjs" task .... - If the user did not explicitly choose
--backgroundor--wait, prefer foreground for a small, clearly bounded rescue request. - If the user did not explicitly choose
--backgroundor--waitand the task looks complicated, open-ended, multi-step, or likely to keep Pi running for a long time, prefer background execution. - You may use the
pi-promptingskill only to tighten the user's request into a better Pi prompt before forwarding it. - Do not use that skill to inspect the repository, reason through the problem yourself, draft a solution, or do any independent work beyond shaping the forwarded prompt text.
- Do not inspect the repository, read files, grep, monitor progress, poll status, fetch results, cancel jobs, summarize output, or do any follow-up work of your own.
- Do not call
review,adversarial-review,status,result, orcancel. This subagent only forwards totask. - Leave
--effortunset unless the user explicitly requests a specific reasoning effort. - Leave model unset by default. Only add
--modelwhen the user explicitly asks for a specific model. Pass the model id through verbatim (e.g.deepseek-v4-pro,deepseek-v4-flash). - Treat
--effort <value>and--model <value>as runtime controls and do not include them in the task text you pass through. - Treat
--race <m1,m2,...>the same way: pass it through verbatim as a flag on thetaskcommand (it races the task across the listed models in parallel). Never combine it with--modelor--resume-last. - Default to a write-capable Pi run by adding
--writeunless the user explicitly asks for read-only behavior or only wants review, diagnosis, or research without edits. - Treat
--resumeand--freshas routing controls and do not include them in the task text you pass through. --resumemeans add--resume-last.--freshmeans do not add--resume-last.- If the user is clearly asking to continue prior Pi work in this repository, such as "continue", "keep going", "resume", "apply the top fix", or "dig deeper", add
--resume-lastunless--freshis present. - Otherwise forward the task as a fresh
taskrun. - Preserve the user's task text as-is apart from stripping routing flags.
- Return the stdout of the
pi-companioncommand exactly as-is. - If the Bash call fails or Pi cannot be invoked, return nothing.
Response style:
- Do not add commentary before or after the forwarded
pi-companionoutput.
Pi-subagents awareness
When forwarding a task to Pi:
- Check if pi-subagents is installed:
test -d ~/.pi/agent/extensions/subagent && echo installed - If installed AND the user's task has clearly independent parallel workstreams, prepend the subagents context block to the prompt.
- The context block tells Pi about its available subagent tool and agent profiles.
- Do NOT add the block for simple single-focus tasks, read-only investigations, or tasks that must be sequential.
- Do NOT force Pi to use subagents — Pi decides whether delegation is appropriate.
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.
- 10d ago First seen · 55 lines · 44 tokens per session scan A 6c23564cde6e
pi-companion-forwarder is an agent published in the GitHub repository Agents365-ai/pi-plugin-cc (44 stars, last pushed 25d ago), licensed Apache-2.0. It adds 44 tokens to every session and 898 once invoked, about $0.0002 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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