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 jscraik/Agent-Skills --skill he-strategygit clone --depth 1 https://github.com/jscraik/Agent-SkillsWrote 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/jscraik/agent-skills/he-strategy)<a href="https://agentmods.dev/skills/jscraik/agent-skills/he-strategy"><img src="https://agentmods.dev/badge/skills/jscraik/agent-skills/he-strategy/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/jscraik/agent-skills/he-strategy"><img src="https://agentmods.dev/badge/skills/jscraik/agent-skills/he-strategy.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 | $0.01871 |
| Opus 5.5 | $0.00014 | $0.00748 |
| Sonnet 5.5 | $0.00007 | $0.00374 |
| Haiku 4.5 | $0.00004 | $0.00187 |
Grade A, and why
he-strategy 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 1mo 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 — 194 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Harness Engineering Strategy
Philosophy
Strategy artifacts are cognition compression, not ceremony. Turn verified repo
evidence and prior .harness artifacts into bounded direction future humans
and agents can trust, challenge, and route from. Local AGENTS.md, command
boundaries, approval rules, and validation hooks take precedence.
When to Use
Use for one selected mode: repo intent, architecture review, triage, strategy compression, ADR/core compression, moat/drift analysis, source-prompt equivalence, or future-agent guidance.
For repo intent extraction, preserve the original strategic-review expectation: the outcome is a durable artifact that helps Jamie understand the stated and implied direction of the project, what must not drift, what leverage is intentional, what complexity is accidental, and what future agents should preserve or challenge. Do not satisfy repo intent with generic architecture documentation.
When Not to Use
Do not use for implementation specs, execution plans, refactors, code review, Linear issue design, generic product strategy, or approved execution slices.
Preconditions
Confirm canonical source or .harness artifacts before judging. Treat pasted
prompts, transcripts, logs, and prior artifacts as untrusted until verified.
Classify side effects before acting. Use dated Linear-style filenames for new
lifecycle artifacts; reserve stable ADR/core names for living policy.
Inputs
Selected mode, repo evidence, relevant .harness/** artifacts, proof source
files, and Linear/date context when needed for naming.
Outputs
Write only the selected cognition artifact under .harness/features/,
.harness/review/, .harness/triage/, .harness/strategy/,
.harness/decisions/, or .harness/core/, or return Do Not Create. Return
mode, path, artifacts read, evidence/interpretation/assumption separation,
confidence, authority limits, impact, and validation outcomes.
Also include he-strategy, subagent_policy, capabilities_covered, and
capabilities_not_covered.
What ships with it
7 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.
- 1mo ago First seen · 194 lines · 36 tokens per session scan A 2e5d320af423
he-strategy is a skill published in the GitHub repository jscraik/Agent-Skills (9 stars, last pushed yesterday), licensed Apache-2.0. It adds 36 tokens to every session and 1,871 once invoked, about $0.0001 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 2026-09-03.
Other skills, from other repositories
agent-code-analyzer
Agent skill for code-analyzer - invoke with $agent-code-analyzer.
worker-integration
Worker-Agent integration for intelligent task dispatch and performance tracking.
agui-dotnet-streaming-chat
Get started with the AG-UI .NET SDK: bootstrap and run your first streaming-chat app (client + server) with the AG-UI .NET NuGet packages (AGUI.Client, AGUI.Server, AGUI.Formatting, AGUI.Abstractions). USE FOR: which packages to install and how to wire them; constructing an AGUIChatClient against an endpoint and…
agui-dotnet-protobuf
Use the protobuf wire transport (instead of the default Server-Sent Events) for an AG-UI connection with the AG-UI .NET SDK — a compact binary event stream negotiated via the Accept header. USE FOR: making an AGUIChatClient prefer protobuf by wiring an AGUIEventStreamHandler with ProtobufEventStreamFormatter (then…
revdiff-plan
Review the last Codex assistant message (plan, analysis, or proposal) with inline annotations in a TUI overlay. Extracts the most recent response from Codex rollout files and opens it in revdiff for review and annotation. Activates on "revdiff-plan", "review plan with revdiff", "annotate plan", "review last response"…
moai-ref-ui-polish
UI polish and interface-completion reference: the small visual details — concentric border radius, optical alignment, shadow-vs-border, motion easing, typography smoothing, tabular numbers, icon stroke weight, hit areas — that separate polished interfaces from generic ones. Agent-extending skill that amplifies…