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 hmj1026/dhpk --skill harness-setupgit clone --depth 1 https://github.com/hmj1026/dhpkWrote 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/hmj1026/dhpk/harness-setup)<a href="https://agentmods.dev/skills/hmj1026/dhpk/harness-setup"><img src="https://agentmods.dev/badge/skills/hmj1026/dhpk/harness-setup/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/hmj1026/dhpk/harness-setup"><img src="https://agentmods.dev/badge/skills/hmj1026/dhpk/harness-setup.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 | $0.00053 | $0.01146 |
| Opus 5.5 | $0.00021 | $0.00458 |
| Sonnet 5.5 | $0.00011 | $0.00229 |
| Haiku 4.5 | $0.00005 | $0.00115 |
Grade A, and why
harness-setup 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 yesterday.
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 — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Harness Setup
$harness-setup is the explicit setup capability behind the Claude
/dhpk:setup front door. It owns setup and configuration evidence; it does not
silently broaden a host's authority or invent a second installer.
When to Use
- The operator explicitly requests
$harness-setupor/dhpk:setup. - The operator wants to inspect effective setup with
--show. - The operator explicitly selects a host-supported asset installation group.
When NOT to Use
- Harness scoring, budget analysis, trimming, or cross-platform synchronization: these retired optional tools are outside the setup contract.
- Application code, ordinary configuration edits, or credentials not covered by the host setup procedure.
- A request that supplies a new
--hostselector. Host is detected from the current runtime; do not add a public host flag.
Host and resource resolution
- Detect the current Host from the native invocation context and available
tools. A Claude command context selects the Claude adapter; a Codex
project-local skill context selects the Codex adapter. If the context is
ambiguous, stop
BLOCKEDwithHOST_UNRESOLVEDrather than guessing. - Load exactly one package-local adapter reference: Claude setup
or Codex setup. A missing reference or declared
runtime asset is
BLOCKED_RESOURCE_MISSING; do not scan ambient checkouts or remote URLs for a replacement. - Preserve the caller's argument string. The accepted grammar is the
argument-hintabove; unknown options areBLOCKED.--source-artifactis explicit task input for asset or Codex installation; it is never inferred from a checkout, plugin cache, parent directory, or sibling Skill.
The adapter references, executable wrappers, and procedure resources are
Skill-local. scripts/install-assets.sh and
scripts/install-codex-project.sh resolve their physical helpers from their
own BASH_SOURCE; they execute no adapter selected from the source artifact.
The source artifact supplies bytes and manifests only. A missing local helper
is BLOCKED_RESOURCE_MISSING; a missing or invalid explicit artifact is
SOURCE_ARTIFACT_REQUIRED or SOURCE_ARTIFACT_INVALID.
What ships with it
11 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.
- agents/openai.yaml 245 B
- data/module-catalog.json 16 KB
- distribution.yaml 4.7 KB
- references/claude-setup.md 5.4 KB
- references/codex-setup.md 4.0 KB
- references/harness-directory-contract.md 1.1 KB
- scripts/install-assets.sh 7.3 KB runs code
- scripts/install-codex-project.sh 5.7 KB runs code
- scripts/lib/install-assets-writer.sh 26 KB runs code
- scripts/lib/install-codex-skills.sh 221 KB runs code
- templates/settings.local.json.example 681 B
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.
- yesterday Changed · +2 lines 45b75c9d574a
- 10d ago Changed · -4 lines · -6 tokens per session 372382160a86
- 21d ago Changed · +3 lines 3dd672d76692
- 23d ago First seen · 105 lines · 59 tokens per session scan A b4f8c048f155
harness-setup is a skill published in the GitHub repository hmj1026/dhpk (2 stars, last pushed today), licensed MIT. It adds 53 tokens to every session and 1,146 once invoked, about $0.0002 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 2026-09-24.
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