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 sdcorejs/sdcorejs-agent --skill sdcorejs-specgit clone --depth 1 https://github.com/sdcorejs/sdcorejs-agentWrote 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/sdcorejs/sdcorejs-agent/sdcorejs-spec)<a href="https://agentmods.dev/skills/sdcorejs/sdcorejs-agent/sdcorejs-spec"><img src="https://agentmods.dev/badge/skills/sdcorejs/sdcorejs-agent/sdcorejs-spec/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/sdcorejs/sdcorejs-agent/sdcorejs-spec"><img src="https://agentmods.dev/badge/skills/sdcorejs/sdcorejs-agent/sdcorejs-spec.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 | $0.00088 | $0.04504 |
| Opus 5.5 | $0.00035 | $0.01802 |
| Sonnet 5.5 | $0.00018 | $0.00901 |
| Haiku 4.5 | $0.00009 | $0.00450 |
Grade A, and why
sdcorejs-spec 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 16d 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 — 464 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Path resolution: Resolve ../../_refs/... relative to this SKILL.md. Resolve another SDCoreJS skill by opening the sibling folder ../<skill-name>/SKILL.md.
02 - Spec
Shared Protocols
Read ../../_refs/shared/runtime-protocols.md. Draft and approved spec artifacts
apply ../../_refs/shared/artifact-lifecycle.md and emit artifact_context. Resolve
track/profile/repository semantics from ../../_refs/shared/system-registry.json.
Create and verify every approval identity with the executable
../../_refs/shared/approved-artifact.mjs helper. Read
../../_refs/shared/decision-coverage.md, validate decision_coverage at the spec
stage with ../../_refs/shared/decision-coverage.mjs, and preserve its stable IDs,
revision history, blockers, and future planning gaps.
Read ../../_refs/sdlc/architecture.md and classify the post-spec conditional gate
with classifyArchitectureGate from
../../_refs/shared/architecture-contract.mjs. The spec records the classification;
it does not author the architecture artifact.
Preserve requirement_context.visual_companion as runtime context through
context.pass (portable state_delta.visual_companion), including stable decision/thread identity, scoped responses,
actual surface and purpose-bound consent. Do not reset it when changing phase,
persist runtime permission in approved artifacts, or reopen a settled visual
choice. An unresolved choice returns to its owner under
../../_refs/sdlc/visual-offer-policy.md; normal approval/change-control gates remain.
Purpose
Turn the confirmed requirement contract into a durable spec, hold the user approval gate, and persist the approved spec corpus inside the same skill.
A spec answers what and why. A plan answers which files and in what order.
Preconditions
sdcorejs-brainstorminghas confirmed the minimum blockers and emittedrequirement_context, or the conversation already contains an equivalent complete requirement set with explicit decisions, assumptions, target root, target root kind, track, stack profile, and acceptance criteria seed.- Target root and context/track are known.
owner_repository_id,owner_repository_role, optionalowner_module_id, andexecution_host_repository_idare resolved from semantic topology rather than the current working directory.- For non-trivial code/test generation, do not proceed from an unconfirmed idea.
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.
- 16d ago Changed · +2 lines d184552e44be
- 1mo ago Changed · +7 lines d69996945cf9
- 2mo ago First seen · 455 lines · 88 tokens per session scan A 3a68f9b4ae7c
sdcorejs-spec is a skill published in the GitHub repository sdcorejs/sdcorejs-agent (2 stars, last pushed 15d ago), licensed MIT. It adds 88 tokens to every session and 4,504 once invoked, about $0.0004 per session on Opus 5.5. 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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