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 agents/citiesskylinesmodding/agents-plugins/cantrips-loopgit clone --depth 1 https://github.com/CitiesSkylinesModding/agents-pluginsWhat 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 | $0.00540 |
| Opus 5 | $0.00000 | $0.00270 |
| Sonnet 5 | $0.00000 | $0.00108 |
| Haiku 4.5 | $0.00000 | $0.00054 |
Grade A, and why
cantrips-loop 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 2d 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 — 26 lines — stays where its author put it; the contents beside it link to each section on GitHub.
The cantrips loop in this repo
What the six storage verbs translate to here, and which knowledge stores are enabled.
Storage-touching skills read this doc instead of the plugin defaults.
/setup-cantrips-loop wrote it; re-run that skill to change it.
Storage backend
Local markdown under .scratch/<feature>/, a kebab-case feature slug per folder. .scratch/ is already listed in .gitignore, so a write there needs no setup.
A spec and its tickets are working material, not a record: they live in .scratch/ only while the feature is in flight, and the durable outcome lands in code, git history, and the knowledge stores below. Closing a finished feature is the human's act — they delete .scratch/<feature>/ once it no longer serves.
- Publish the spec (
publish-spec) — write the spec to.scratch/<feature>/spec.md. - Fetch the spec (
fetch-spec) — read.scratch/<feature>/spec.md. - Annotate the spec (
annotate-spec) — append the note under a## Commentsheading at the end of the spec file, each entry prefixed with its date; the body above that heading stays frozen. - Publish the tickets (
publish-tickets) — write one file per ticket to.scratch/<feature>/NN-<slug>.md, numbered from01in dependency order, blocking edges as the ticket body's "Blocked by" prose; the shared folder is what ties a ticket to its parent spec. A ticket's body takes the shapedocs/authoring/ticket-template.mdfixes. - Fetch the ticket (
fetch-ticket) — read the ticket file. - Resolve the ticket (
resolve-ticket) — add or flip aStatus: resolvedline directly under the ticket's title; the verified acceptance-criterion checkboxes remain as evidence.
Three invariants hold whatever the backend: an annotation appends without touching what is already there and stays time-ordered; an annotation recording a revised decision governs over the body it revises, so later readers judge the spec as amended; and a published ticket is traceable to its parent spec.
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.
- 2d ago First seen · 26 lines · 0 tokens per session scan A a3d32bb2df0e
cantrips-loop is an agent published in the GitHub repository CitiesSkylinesModding/agents-plugins (5 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 540 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 2026-08-31.
Other agents, from other repositories
repo-profiler
You are a repo-profiling scout. Derive the question-agnostic project profile for the repository at the current working directory — the stable orientation that repo-grounding skills reuse. Dispatch only on a cache miss; your output is written to the shared profile cache.
meeting-end-agent
Stops the active meeting recording, drafts notes, and prepares follow-up email/tasks.
doc-to-deck-agent
Converts a Pages or Word document into a Keynote slide deck.
meeting-setup-agent
Preps a meeting by syncing attendees to Contacts, creating prep reminders, and setting calendar alerts.
sheet-report-agent
Analyzes spreadsheet data and produces a report with charts.
meeting-start-agent
Detects the current meeting and starts a Voice Memo recording.