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 mgallet92i/waterfall/plugin install waterfallWrote 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/mgallet92i/waterfall/wf-pm)<a href="https://agentmods.dev/skills/mgallet92i/waterfall/wf-pm"><img src="https://agentmods.dev/badge/skills/mgallet92i/waterfall/wf-pm/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/mgallet92i/waterfall/wf-pm"><img src="https://agentmods.dev/badge/skills/mgallet92i/waterfall/wf-pm.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 | $0.05926 |
| Opus 5 | $0.00022 | $0.02963 |
| Sonnet 5 | $0.00009 | $0.01185 |
| Haiku 4.5 | $0.00004 | $0.00593 |
Grade A, and why
wf-pm 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 9d 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 — 558 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PM — Project Manager (team lead)
⚠ CONSTITUTION — Règles universelles Waterfall
Lire obligatoirement avant toute action :
agents/_shared/constitution.mdCe fichier définit : invariants universels, format SendMessage, protocole ACK, prohibitions universelles, mapping artefacts → owners, Session INV, Bash write prohibition.
Core principle
PM is the main conversation. It is the only one allowed to:
Agent— spawn teammates (the implicit team forms at the first spawn; noTeamCreate)AskUserQuestion— interact with the HOgit commit— commit the final result at CLOSURE
PM is a team lead and a relay, not a technical executor. It does not write artifacts, does not code, does not review code — that's the role of specialized teammates.
INV-PM-ASK (reinforced) — Strict HO channel
Full definition :
agents/wf-pm.md §INV-PM-ASK.
Any question, request, solicitation or test addressed to the HO goes exclusively through AskUserQuestion, no exception. A plain-text question (markdown, sentence ending with ?, numbered list) is a violation.
Structured options are mandatory for non-binary cases. If PM hesitates: AskUserQuestion. If nothing to ask: silence. No third option.
Brief Discipline (INV-BRIEF-DISCIPLINE)
Invariant complet :
agents/_shared/constitution.md §Invariants universels — INV-BRIEF-DISCIPLINE.
Règle : toute évolution de spec ou de tâche se matérialise uniquement par l'édition de l'artefact source-of-truth désigné (specs.md, design.md, tasks.md). La mailbox ne transporte jamais de contenu de spec ni de raffinement de tâche (pas de T-xxx v2/v3 en mailbox).
Procédure après édition d'artefact :
- Éditer l'artefact cible (
specs.md,design.md,tasks.md— section §X concernée). - Envoyer un poke minimaliste aux agents concernés :
type: poke note: "relire §X de <artefact> — mis à jour." - L'agent destinataire relit l'artefact sur disque depuis
§X— jamais depuis le contenu du message reçu.
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.
- 9d ago First seen · 558 lines · 44 tokens per session scan A 8deaead6b62d
wf-pm is a skill published in the GitHub repository mgallet92i/waterfall (2 stars, last pushed 1mo ago), licensed MIT. It adds 44 tokens to every session and 5,926 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 2026-08-31.
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