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 skills/voro6yov/spec-driven-development/patternsnpx skills add voro6yov/spec-driven-development --skill patternsgit clone --depth 1 https://github.com/voro6yov/spec-driven-developmentWhat 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 | $0.00057 | $0.00636 |
| Opus 5 | $0.00028 | $0.00318 |
| Sonnet 5 | $0.00011 | $0.00127 |
| Haiku 4.5 | $0.00006 | $0.00064 |
Grade A, and why
patterns 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 — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Application-spec pattern catalog (umbrella)
This skill is a path-resolution anchor: it registers one catalog entry for all application-spec
pattern references. The pattern docs themselves are supporting files in folders next to this
SKILL.md and are never auto-loaded — consumers Read them on demand.
Resolution rule
Every pattern named <pattern-name> resolves to the folder <pattern-name>/ sibling to this
file:
- the pattern document is always
<pattern-name>/index.md; - companions, when present, sit in the same folder. Relative links inside
index.mdresolve within that folder. (Onlydomain-exceptionsships a companion —template.md.)
A pattern name that has no matching folder is an error — report it loudly; never skip it silently.
Catalog
| Pattern | Folder | Companions |
|---|---|---|
| application-service-integration-test-rules | application-service-integration-test-rules/ | — |
| commands | commands/ | — |
| commands-dependencies-template | commands-dependencies-template/ | — |
| commands-methods-template | commands-methods-template/ | — |
| dependency-injection-patterns | dependency-injection-patterns/ | — |
| domain-exceptions | domain-exceptions/ | template.md |
| fake-implementations | fake-implementations/ | — |
| fake-override-fixtures | fake-override-fixtures/ | — |
| interfaces | interfaces/ | — |
| ops | ops/ | — |
| queries-dependencies-template | queries-dependencies-template/ | — |
| queries-methods-template | queries-methods-template/ | — |
| queries-pattern | queries-pattern/ | — |
| retry-transaction | retry-transaction/ | — |
| services-report-template | services-report-template/ | — |
| settings | settings/ | — |
| updates-report-template | updates-report-template/ | — |
What ships with it
18 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.
- application-service-integration-test-rules/index.md 13 KB
- commands-dependencies-template/index.md 4.3 KB
- commands-methods-template/index.md 9.9 KB
- commands/index.md 7.9 KB
- dependency-injection-patterns/index.md 13 KB
- domain-exceptions/index.md 3.8 KB
- domain-exceptions/template.md 3.7 KB
- fake-implementations/index.md 11 KB
- fake-override-fixtures/index.md 5.0 KB
- interfaces/index.md 2.3 KB
- ops/index.md 9.1 KB
- queries-dependencies-template/index.md 2.4 KB
- queries-methods-template/index.md 5.9 KB
- queries-pattern/index.md 6.3 KB
- retry-transaction/index.md 3.1 KB
- services-report-template/index.md 3.2 KB
- settings/index.md 1.4 KB
- updates-report-template/index.md 20 KB
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 · 47 lines · 57 tokens per session scan A 66901fe40bd1
patterns is a skill published in the GitHub repository voro6yov/spec-driven-development (4 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 57 tokens to every session and 636 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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