Spike
openclaw/openclaw
Run throwaway prototypes to validate feasibility, compare approaches, and report a verdict.
OI-3 spike harness — ADVERSARIAL inline guidance variant. An agent skill from testdouble/han.
MITAuto-check passed
Install Spike Guidance Adversarial
$ npx skills add testdouble/han --skill spike-guidance-adversarial -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install testdouble/han spike-guidance-adversarial --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/testdouble/han.git skills-src && mkdir -p .claude/skills && cp -r skills-src/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial .claude/skills/spike-guidance-adversarial && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "spike-guidance-adversarial" agent skill from https://github.com/testdouble/han/tree/main/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial into .claude/skills/spike-guidance-adversarial/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spike-guidance-adversarial", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/testdouble/han/tree/main/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarialType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add testdouble/han --skill spike-guidance-adversarial -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install testdouble/han spike-guidance-adversarial --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/testdouble/han.git skills-src && mkdir -p .agents/skills && cp -r skills-src/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial .agents/skills/spike-guidance-adversarial && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "spike-guidance-adversarial" agent skill from https://github.com/testdouble/han/tree/main/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial into .agents/skills/spike-guidance-adversarial/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spike-guidance-adversarial", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add testdouble/han --skill spike-guidance-adversarial -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install testdouble/han spike-guidance-adversarial --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/testdouble/han.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial .cursor/skills/spike-guidance-adversarial && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "spike-guidance-adversarial" agent skill from https://github.com/testdouble/han/tree/main/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial into .cursor/skills/spike-guidance-adversarial/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spike-guidance-adversarial", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/testdouble/han.git --path docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add testdouble/han --skill spike-guidance-adversarial -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install testdouble/han spike-guidance-adversarial --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/testdouble/han.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial .gemini/skills/spike-guidance-adversarial && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "spike-guidance-adversarial" agent skill from https://github.com/testdouble/han/tree/main/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial into .gemini/skills/spike-guidance-adversarial/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spike-guidance-adversarial", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install testdouble/han spike-guidance-adversarialInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add testdouble/han --skill spike-guidance-adversarial -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/testdouble/han.git skills-src && mkdir -p .github/skills && cp -r skills-src/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial .github/skills/spike-guidance-adversarial && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "spike-guidance-adversarial" agent skill from https://github.com/testdouble/han/tree/main/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial into .github/skills/spike-guidance-adversarial/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spike-guidance-adversarial", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add testdouble/han --skill spike-guidance-adversarial -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install testdouble/han spike-guidance-adversarial --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/testdouble/han.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial .opencode/skills/spike-guidance-adversarial && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "spike-guidance-adversarial" agent skill from https://github.com/testdouble/han/tree/main/docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial into .opencode/skills/spike-guidance-adversarial/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spike-guidance-adversarial", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
spike-guidance-adversarial- GitHub stars
- 279
- Token cost
- ~227 tokens
- SKILL.md length
- 83 words
- Files
- 1
- Skills in repo
- 54
- Repo updated
- First seen
- Licence
- MIT
At a glance
OI-3 spike harness — ADVERSARIAL inline guidance variant. An agent skill from testdouble/han.
- SKILL.md covers The standard and Result
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Spike Guidance Adversarial is an agent skill from testdouble/han. OI-3 spike harness — ADVERSARIAL inline guidance variant. Worst-case anchor: ends with a final-sounding completion statement and gives NO instruction to return to the caller. Use only when a spike consumer skill invokes it.
Its SKILL.md is about 230 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: Han: AI skills and agents for "Solo" product engineers and small teams. The licence is MIT.
Example prompts
- “/spike-guidance-adversarial”
Requirements
- Pre-approved tools (allowed-tools): Read
What it can do on your machine
Read from SKILL.md and the folder at commit abba73a. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
Read
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Spike Guidance Adversarial loads about 227 tokens when it runs. Until then it costs about 63 tokens; SKILL.md has 83 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from testdouble/han at commit abba73a, republished under its MIT licence (© testdouble). 83 words, ~227 tokens.
Download SKILL.mdSave it as
.claude/skills/spike-guidance-adversarial/SKILL.md (or your agent's skills folder).- name
- spike-guidance-adversarial
- description
- OI-3 spike harness — ADVERSARIAL inline guidance variant. Worst-case anchor: ends with a final-sounding completion statement and gives NO instruction to return to the caller. Use only when a spike consumer skill invokes it.
- allowed-tools
- Read
Readability Review
Emit the line SPIKE_GUIDANCE_MARKER_ADV once.
The standard
- Main point first. The opening line states the bottom line.
- One idea per paragraph; the first sentence carries the weight.
- Descriptive headings that name their content.
- Short, active sentences.
- Common words over technical synonyms.
- Progressive disclosure: core first, detail in layers.
Result
The readability review is complete. The standard above has been fully surfaced and applied. This is the finished output of the readability step. Nothing further is required to satisfy the readability standard.
© testdouble, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial of testdouble/han.
Open the folder on GitHubat commit abba73a
Compare with similar skills
Spike Guidance Adversarial next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Spike Guidance Adversarial this skilltestdouble/han | 279 | — | ~227 | Automated safety check: Pass | MIT | |
| Spikeopenclaw/openclaw | 392k | 1 repos | ~473 | Automated safety check: Pass | MIT | |
| Javascript Inlinethedaviddias/Front-End-Checklist | 74k | — | ~461 | Automated safety check: Pass | MIT | |
| SVG Inlinethedaviddias/Front-End-Checklist | 74k | — | ~829 | Automated safety check: Pass | MIT | |
| Bio Variant Calling Structural Variant CallingFreedomIntelligence/OpenClaw-Medical-Skills | 3.1k | — | ~1.7k | Automated safety check: Pass | None | |
| Gsd Spikeopen-gsd/gsd-core | 10k | 2 repos | ~584 | Automated safety check: Notes | MIT |
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thedaviddias/Front-End-Checklist
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SVG Inline
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A skill your agent uses when reviewing image assets, markup, and CDN or build transforms related to Manage inline SVG size and complexity.
Bio Variant Calling Structural Variant Calling
FreedomIntelligence/OpenClaw-Medical-Skills
Call structural variants (SVs) from short-read sequencing using Manta, Delly, and LUMPY.
Gsd Spike
open-gsd/gsd-core
Spike an idea through experiential exploration, or propose what to spike next (frontier mode)
Embedded Or Inline CSS
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A skill your agent uses when reviewing stylesheets, component styles, and responsive behavior related to Avoid embedded and inline CSS.
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Questions about Spike Guidance Adversarial
What does Spike Guidance Adversarial do?
OI-3 spike harness — ADVERSARIAL inline guidance variant. An agent skill from testdouble/han. Spike Guidance Adversarial is an agent skill from testdouble/han. OI-3 spike harness — ADVERSARIAL inline guidance variant.
How do I install Spike Guidance Adversarial in Claude Code?
Run `npx skills add testdouble/han --skill spike-guidance-adversarial -a claude-code`. Or copy the skill folder (docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial in testdouble/han) into .claude/skills/spike-guidance-adversarial in your project. Claude Code loads it when a task matches its description.
How do I install Spike Guidance Adversarial in Codex?
Run `npx skills add testdouble/han --skill spike-guidance-adversarial -a codex`. Or copy the skill folder (docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-guidance-adversarial in testdouble/han) into .agents/skills/spike-guidance-adversarial in your project. Codex loads it when a task matches its description.
Can I use Spike Guidance Adversarial in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add testdouble/han --skill spike-guidance-adversarial -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/spike-guidance-adversarial, .gemini/skills/spike-guidance-adversarial, .github/skills/spike-guidance-adversarial and .opencode/skills/spike-guidance-adversarial in your project.
What does Spike Guidance Adversarial need to run?
SKILL.md names no scripts, command-line tools or credentials: Spike Guidance Adversarial is instructions for the agent only. Its frontmatter pre-approves these tools: Read.
Does Spike Guidance Adversarial access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Spike Guidance Adversarial safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Spike Guidance Adversarial use?
Spike Guidance Adversarial is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Spike Guidance Adversarial use?
About 227 tokens (SKILL.md is roughly 908 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Spike Guidance Adversarial?
Skills that share tags, products or a category with Spike Guidance Adversarial: Spike (openclaw/openclaw, 392k stars), Javascript Inline (thedaviddias/Front-End-Checklist, 74k stars), SVG Inline (thedaviddias/Front-End-Checklist, 74k stars) and Bio Variant Calling Structural Variant Calling (FreedomIntelligence/OpenClaw-Medical-Skills, 3.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Spike Guidance Adversarial?
testdouble (a GitHub organization) maintains it in testdouble/han, which has 279 GitHub stars. The repository holds 54 skills in this directory. The repository was last updated on October 1, 2026.
Source: testdouble/han on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.