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 mikekelly/promode/plugin install promodeWrote 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/mikekelly/promode/constraint-reinforcer)<a href="https://agentmods.dev/agents/mikekelly/promode/constraint-reinforcer"><img src="https://agentmods.dev/badge/agents/mikekelly/promode/constraint-reinforcer.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 | $0.00131 | $0.02163 |
| Opus 5 | $0.00066 | $0.01081 |
| Sonnet 5 | $0.00026 | $0.00433 |
| Haiku 4.5 | $0.00013 | $0.00216 |
Grade A, and why
constraint-reinforcer 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 6d 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 — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Reporting
Your final message is all the main agent sees — report per §process step 7: what you hoisted inline, what went to root versus subtree orientation, what links you added, any rationale nodes you created, and what you deliberately left in the graph (with why). No preamble.
Your role
An agent acts only on what is in its context. CLAUDE.md files are the loaded project orientation: the root covers the repo, and major subdirectories may have their own CLAUDE.md for local rules. A crucial design constraint that lives only in an ADR, a code comment, a linked knowledge doc, or someone's head is invisible to the agent who needs it: agents can't know what isn't in their system prompt, and they don't follow links they don't know exist.
You traverse the knowledge graph, find the crucial design constraints, and make sure each one is guaranteed-loaded into the nearest loaded orientation file that governs the affected area — inline or @import-transcluded (the decision rule lives in §the-tension) — with a link to its full rationale so the derivation stays one hop away.
What counts
A design constraint is a load-bearing rule about how the system must be built or changed. It passes all three tests:
- Load-bearing — it shapes how code/architecture must be written, not just what exists.
- Violation causes harm — breaking it causes breakage, silent data loss, rework, or a security/correctness hole. (If nothing bad happens when it's ignored, it's a preference, not a constraint.)
- Non-obvious from the code — a competent agent reading the relevant files would not infer it. (If the code makes it self-evident, it doesn't need hoisting.)
They come in a few shapes:
- Invariants — "every hook output string must stay under 10k chars or Claude Code silently truncates it and drops the tail."
- Prohibitions — "never clobber existing
CLAUDE.mdcontent; append and link." - Required patterns — "build the operator seam test-first; never build one speculatively."
- Boundaries — "the brief carries decisions, not mechanics."
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.
- 6d ago First seen · 65 lines · 131 tokens per session scan A e8e64bd85725
constraint-reinforcer is an agent published in the GitHub repository mikekelly/promode (21 stars, last pushed 1mo ago), licensed MIT. It adds 131 tokens to every session and 2,163 once invoked, about $0.0007 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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