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 ericrisco/rsc-harness --skill decision-recordsgit clone --depth 1 https://github.com/ericrisco/rsc-harnessWrote 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/ericrisco/rsc-harness/decision-records)<a href="https://agentmods.dev/skills/ericrisco/rsc-harness/decision-records"><img src="https://agentmods.dev/badge/skills/ericrisco/rsc-harness/decision-records/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/ericrisco/rsc-harness/decision-records"><img src="https://agentmods.dev/badge/skills/ericrisco/rsc-harness/decision-records.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00076 | $0.02840 |
| Opus 5 | $0.00038 | $0.01420 |
| Sonnet 5 | $0.00015 | $0.00568 |
| Haiku 4.5 | $0.00008 | $0.00284 |
Grade A, and why
decision-records 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 5d 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 — 203 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Decision Records — Freeze the Why Before It Evaporates
A consequential choice got made. Capture it as one short, immutable, numbered ADR: the context that forced it, the real options weighed, the decision, and what it costs you both ways. Six months from now this file is the only thing standing between you and re-litigating the whole thing.
You own the durable single-decision artifact — an Architecture/Any Decision Record (ADR). Not a meeting recap, not a runbook, not a spec. One bounded choice, recorded so the reasoning survives the people who made it.
The one test: is this even ADR-worthy?
Write an ADR iff the choice is costly to reverse OR future-you will ask "why did we do it this way". Everything else is noise — an ADR for a trivial reversible tweak is just paperwork, and ADRs lose all their value the moment they become forced ceremony (this is the consistent message from Fowler and the AWS Architecture Blog).
| Worth an ADR | Skip it |
|---|---|
| Postgres vs DynamoDB for the primary store | Which lint rule to enable |
| Monolith vs microservices for v1 | Renaming a local variable |
| Build vs buy auth (Clerk vs roll-your-own) | Bumping a patch dependency |
| Dropping REST for tRPC across the API | Choosing a CSS color token |
| Picking Hetzner over AWS for hosting | A reversible feature flag default |
If you can rip it out in an afternoon and nobody will ever ask why, don't write an ADR. Decide, move on.
Decide home + naming once
Pick a storage convention before the first record, and never spawn a competing second log. Default to the project's existing convention if one exists.
| Naming school | Looks like | Use when |
|---|---|---|
| Numeric-prefix (adr-tools / MADR) | 0007-choose-postgres.md |
You need stable IDs to cross-reference for supersession — the default |
| Imperative verb-noun | choose-database.md |
Tiny log, no supersession expected, humans browse by topic |
Prefer numeric-prefix: NNNN-title-with-dashes.md. Stable IDs are what make "Superseded by ADR-0012" mean something.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 5d ago First seen · 203 lines · 76 tokens per session scan A f2828503ef9d
decision-records is a skill published in the GitHub repository ericrisco/rsc-harness (74 stars, last pushed 2d ago), licensed MIT. It adds 76 tokens to every session and 2,840 once invoked, about $0.0004 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 2026-09-03.
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