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.
git clone --depth 1 https://github.com/jstxn/reinWrote 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/rules/jstxn/rein/rein-go)<a href="https://agentmods.dev/rules/jstxn/rein/rein-go"><img src="https://agentmods.dev/badge/rules/jstxn/rein/rein-go.svg" alt="Measured on agentmods" 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 | $0.01109 |
| Opus 5 | $0.00010 | $0.00554 |
| Sonnet 5 | $0.00004 | $0.00222 |
| Haiku 4.5 | $0.00002 | $0.00111 |
Grade A, and why
rein-go 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 8d 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 — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.
rein-go
Use this when the user wants one REIN-controlled flow instead of manually invoking rein-interview, rein-plan, implementation, cleanup, review, and verification as separate steps.
rein-go is the end-to-end orchestration surface for REIN.
When To Use
- The user wants one continuous REIN workflow with minimal pauses
- The task is broad enough to need clarification, planning, implementation, and post-implementation review
- A completed
rein-interviewbundle already exists and should feed directly into planning and implementation - The user explicitly invokes
$rein-go,/rein-go, or asks for a single flow command
When Not To Use
- The task is already a tiny single-file change
- The user explicitly wants only one stage, such as interview-only or plan-only work
- The user wants to skip clarification and planning entirely
Flow Contract
- Public entrypoint:
rein go - Wrapper triggers:
$rein-goand/rein-go - Default posture: keep going with minimal pauses once the flow starts
- Hard stop on:
- dangerous or destructive actions that require approval
- missing permissions or blocked tool access
- any failed stage: plan, implementation, cleanup, review, or verify
- Preserve the current install and hook philosophy; do not turn REIN into a hook-first enforcement layer
Runtime Helper
Start the flow through the runtime:
rein go "<task>" --json
If a completed interview bundle already exists:
rein go --from-interview <slug|path> --json
Then use:
rein go status --slug <slug> --json
rein go resume --slug <slug> --json
rein go advance --slug <slug> --stage <stage> --status <completed|failed|blocked> ... --json
Treat the returned flow state as the source of truth for current stage, resume point, stop reason, and downstream stage artifacts.
Stage Order
- Interview
- Bare
rein go "<task>"initializes the flow and startsrein-interviewautomatically. - If the flow was started with
--from-interview, the interview stage is marked completed from the bundle. - While interview is still active, use the normal
rein interview ...runtime commands and present the user-facing interview exactly likerein-interviewdoes, including the clarity score and question frame. - Never answer interview rounds on the user's behalf, never auto-crystallize, and never skip directly to planning in fresh mode.
- If
rein go resume --slug <slug> --jsonstill returnscurrentStage: interviewand recommendsrein interview crystallize ..., the interview is not done yet; crystallize first, then resume again to advance into planning.
- Bare
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.
- 8d ago First seen · 121 lines · 20 tokens per session scan A 7d386cc517ff
rein-go is a cursor rule published in the GitHub repository jstxn/rein (12 stars, last pushed 4mo ago), licensed MIT. It adds 20 tokens to every session and 1,109 once invoked, about $0.0001 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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