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.
npx agentmods add rules/packmindhub/packmind/standard-domain-eventsgit clone --depth 1 https://github.com/PackmindHub/packmindWhat 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 | $0.00000 | $0.00271 |
| Opus 5 | $0.00000 | $0.00135 |
| Sonnet 5 | $0.00000 | $0.00054 |
| Haiku 4.5 | $0.00000 | $0.00027 |
Grade A, and why
standard-domain-events 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 3d 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
Standard: Domain Events
Domain events enable communication between hexas without creating direct dependencies. Apply these rules when creating events, emitting them, or implementing listeners to react to events from other do... :
- Define event classes in
packages/types/src/{domain}/events/with anindex.tsbarrel file - Define payload as a separate
{EventName}Payloadinterface - Extend
PackmindListener<TAdapter>and implementregisterHandlers()to subscribe to events - Extend
UserEventfor user-triggered actions,SystemEventfor background/automated processes - Include
userIdandorganizationIdin UserEvent payloads; includeorganizationIdin SystemEvent payloads when applicable - Suffix event class names with
Event(e.g.,StandardUpdatedEvent) - Use
eventEmitterService.emit(new MyEvent(payload))to emit events - Use
static override readonly eventNamewithdomain.entity.actionpattern - Use
this.subscribe(EventClass, this.handlerMethod)to register handlers - Use arrow functions for handlers to preserve
thisbinding
Full standard is available here for further request: Domain Events
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.
- 3d ago First seen · 19 lines · 271 tokens per session scan A 0fc7c883e37b
standard-domain-events is a cursor rule published in the GitHub repository PackmindHub/packmind (306 stars, last pushed 5d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 271 tokens. 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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