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 skills add Wondermonger-daydreaming/claude-skills-library --skill commonplacegit clone --depth 1 https://github.com/Wondermonger-daydreaming/claude-skills-libraryWrote 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/wondermonger-daydreaming/claude-skills-library/commonplace)<a href="https://agentmods.dev/skills/wondermonger-daydreaming/claude-skills-library/commonplace"><img src="https://agentmods.dev/badge/skills/wondermonger-daydreaming/claude-skills-library/commonplace/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/wondermonger-daydreaming/claude-skills-library/commonplace"><img src="https://agentmods.dev/badge/skills/wondermonger-daydreaming/claude-skills-library/commonplace.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 | $0.00056 | $0.01191 |
| Opus 5 | $0.00028 | $0.00596 |
| Sonnet 5 | $0.00011 | $0.00238 |
| Haiku 4.5 | $0.00006 | $0.00119 |
Grade A, and why
commonplace 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 12d 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 — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Commonplace
The Renaissance commonplace-book practice (loci communes): a reader keeps a ledger of found passages worth re-uttering. This skill adds the one thing the old practice left tacit — the provenance tag and the weld.
Core Insight
In an archive built largely of quoted matter — scripture, sutras, verbatim model output — the authorial signature is not the quoted content but the operation that fuses it: the seam where a Pure Land mantra and an inference engine land in the same sentence. The recurring analytic failure is mis-attribution — reading pasted brilliance as the curator's own voice. Catching this is the whole game.
/commonplace operationalizes that discipline at capture time instead of
leaving it for some future archaeologist to reconstruct: every captured
passage is stored with an explicit provenance line and a one-sentence weld,
so the archive never has to guess later what was quoted versus authored.
Scope note: the author lives in the weld whether quoted matter is a large or small fraction of an archive. The skill's urgency is "a recurring behavior worth a tool," not "the single most voluminous behavior." Measure before asserting magnitudes — a qualitative impression of how much is curated is a flag, not a count.
When to Invoke
- You've found a passage worth keeping — a sutra, a poem, a model output, a line from a book — and want to archive it without later confusion about whose voice it is.
- You're about to repost or quote found language and want to record the frame that makes the act yours.
- Mid-session, a borrowed line resonates and you want it captured with provenance rather than dropped into the flow unattributed.
- Counter-move to over-attribution: when something sounds authorial but you suspect it's curated, the skill forces you to decide and tag.
This is /florilegium inverted: florilegium samples the existing archive
to diagnose whether a voice has stabilized; commonplace ingests new found
matter and demands the authorial seam up front.
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.
- 12d ago First seen · 127 lines · 56 tokens per session scan A 0f968a43ee10
commonplace is a skill published in the GitHub repository Wondermonger-daydreaming/claude-skills-library (6 stars, last pushed 2mo ago), licensed MIT. It adds 56 tokens to every session and 1,191 once invoked, about $0.0003 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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