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 bostonaholic/team --skill artifact-frontmattergit clone --depth 1 https://github.com/bostonaholic/teamWrote 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/bostonaholic/team/artifact-frontmatter)<a href="https://agentmods.dev/skills/bostonaholic/team/artifact-frontmatter"><img src="https://agentmods.dev/badge/skills/bostonaholic/team/artifact-frontmatter/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/bostonaholic/team/artifact-frontmatter"><img src="https://agentmods.dev/badge/skills/bostonaholic/team/artifact-frontmatter.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 | $0.00036 | $0.01049 |
| Opus 5 | $0.00018 | $0.00524 |
| Sonnet 5 | $0.00007 | $0.00210 |
| Haiku 4.5 | $0.00004 | $0.00105 |
Grade A, and why
artifact-frontmatter 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 4d 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 — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Artifact Frontmatter
This is the schema contract for durable pipeline state under docs/plans/<id>/. Phase behavior lives in skills/qrspi-workflow/SKILL.md; files are the phase interface (principle-files-are-the-contract).
Artifact inventory
<id> is <TICKET>-<kebab-topic> (for example ENG-1234-add-rate-limiting) or <YYYY-MM-DD>-<kebab-topic> (for example 2026-05-01-add-rate-limiting). hooks/session-start-recover.mjs owns executable ID_RE and PHASE_FILES definitions (principle-single-source-of-truth).
| Artifact | Path | Created by | Required |
|---|---|---|---|
| Task | docs/plans/<id>/1-task.md |
questioner | yes |
| Questions | docs/plans/<id>/2-questions.md |
questioner | yes |
| PRD | docs/plans/<id>/3-prd.md |
questioner | when PRD criteria apply |
| Repos | docs/plans/<id>/4-repos.md |
questioner/design-author | for multiple repos |
| Research | docs/plans/<id>/5-research.md |
researcher | yes |
| Design | docs/plans/<id>/6-design.md |
design-author | yes |
| Structure | docs/plans/<id>/7-structure.md |
structure-planner | yes |
| Plan | docs/plans/<id>/8-plan.md |
planner | yes |
Frontmatter schema
Every artifact starts with topic: <kebab-case>, date: <YYYY-MM-DD>, and phase: task | questions | prd | repos | research | design | structure | plan. Task alone adds ticketId: <id> or null; design adds revision: 0. PRD and structure are not gated; plan derives mechanically from structure.
Review records
- Never restore the retired
^approved:frontmatter gate; review records alone determine passage. design-review-<n>.md: orchestrator-written at the highest existing<n>+ 1, or 1. Frontmatter istopic,date,phase: design-review, andverdict: <APPROVE|REQUEST CHANGES|COMMENT>; body is the verbatim report. Highest-round APPROVE or COMMENT passes. REQUEST CHANGES re-dispatchesdesign-authorwith findings verbatim and increments numericrevision; missing/non-numeric means0, so the first rewrite writesrevision: 1.cross-model-notes.md: orchestrator-written, append-only, one already-blockquoted### Cross-model dispositionblock per DESIGN or IMPLEMENT review round. Frontmatter: copiedtopic,date,phase: cross-model-review; noverdict. A block starting> **Design round <n>**is from DESIGN; unlabeled means IMPLEMENT. Create only on first use; reviewers never read it as prior state.cross-model-raw.md: orchestrator-written, append-only DESIGN capture with one result line plus fenced raw output per vendor call; zero calls append nothing. Frontmatter: copiedtopic,date,phase: cross-model-raw; noverdict. It supports live/pre-merge audit only becausedocs/plans/is gitignored and/pr-cleanupdeletes the topic directory.
What ships with it
2 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.
- 4d ago Changed · -168 lines · -47 tokens per session ed98857594ca
- 6d ago Changed · +2 lines 379c0e55ca1e
- 10d ago First seen · 212 lines · 83 tokens per session scan A dd0924df0f0b
artifact-frontmatter is a skill published in the GitHub repository bostonaholic/team (11 stars, last pushed yesterday), licensed MIT. It adds 36 tokens to every session and 1,049 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 2026-08-30.
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