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Agent skill

Spike Consumer Baseline

by testdouble in testdouble/han

OI-3 spike harness — heavy consumer skill, BASELINE arm. An agent skill from testdouble/han.

MITAuto-check passedWriting & Content

Install Spike Consumer Baseline

skills CLI
$ npx skills add testdouble/han --skill spike-consumer-baseline -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install testdouble/han spike-consumer-baseline --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ 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-consumer-baseline .claude/skills/spike-consumer-baseline && rm -rf skills-src

Use ~/.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/

Facts

Skill name
spike-consumer-baseline
GitHub stars
279
Token cost
~667 tokens
SKILL.md length
366 words
Files
1
Skills in repo
54
Repo updated
First seen
Licence
MIT

At a glance

OI-3 spike harness — heavy consumer skill, BASELINE arm. An agent skill from testdouble/han.

  • Works in 6 steps: Read the incident data → Extract the four key facts → Source the readability standard → …
  • Tasks that involve Plain language and style rules
  • SKILL.md covers Step 1 — Read the incident data, Step 2 — Extract the four key…, Step 3 — Source the… and Step 4 — Draft the report, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Spike Consumer Baseline is an agent skill from testdouble/han. OI-3 spike harness — heavy consumer skill, BASELINE arm. Builds an incident post-mortem and sources the readability standard mid-workflow by reading a file directly, with NO Skill-tool call. Use only when explicitly invoked by the spike harness with a TRIALID and data path.

Its SKILL.md is about 670 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Writing & Content, covering Plain language and style rules and Runbooks and postmortems. The repository describes itself as: Han: AI skills and agents for "Solo" product engineers and small teams. The licence is MIT.

When your agent uses it

  • Tasks that involve Plain language and style rules
  • Tasks that involve Runbooks and postmortems

Example prompts

  • “/spike-consumer-baseline”

Requirements

  • Pre-approved tools (allowed-tools): Read, Write

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Read the incident data
  2. Extract the four key facts
  3. Source the readability standard
  4. Draft the report
  5. Self-check
  6. Write the artifact and emit the completion token

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
    • Write

    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 Consumer Baseline loads about 667 tokens when it runs. Until then it costs about 75 tokens; SKILL.md has 366 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~75
When it runs · the whole SKILL.md, loaded when a task matches
~667

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). 366 words, ~667 tokens.

Download SKILL.mdSave it as .claude/skills/spike-consumer-baseline/SKILL.md (or your agent's skills folder).
name
spike-consumer-baseline
description
OI-3 spike harness — heavy consumer skill, BASELINE arm. Builds an incident post-mortem and sources the readability standard mid-workflow by reading a file directly, with NO Skill-tool call. Use only when explicitly invoked by the spike harness with a TRIAL_ID and data path.
allowed-tools
Read, Write

Incident Post-Mortem Builder (baseline arm)

You are producing a written incident post-mortem report. This skill has SIX steps. The steps below are the whole skill. Complete all six in order. Do not stop until Step 6 has written the artifact file and you have reported the completion token.

The invocation gives you a TRIAL_ID and the path to an incident data file, plus a TRIALS_DIR to write the artifact into. It also gives you a STANDARD_PATH to the readability standard file.

Step 1 — Read the incident data

Read the incident data file provided in the invocation.

Step 2 — Extract the four key facts

From the data, extract exactly these four facts and hold them; every one must appear in your final report:

  1. the incident ID
  2. the primary error code
  3. the peak latency figure
  4. the affected service name

Record them as a working note before you continue.

Step 3 — Source the readability standard

Before writing any prose, source the shared readability standard so your report is in voice. Read the file at STANDARD_PATH directly and absorb the standard.

Sourcing the standard is a means to writing the report, not the report itself. You are NOT done after this step. Continue immediately to Step 4.

Show full SKILL.md (159 more words)Show less

Step 4 — Draft the report

Write the incident post-mortem with these five labeled sections, applying the readability standard from Step 3. Each section is a short paragraph:

  1. Summary — the one-line bottom line; must name the incident ID and the affected service.
  2. Impact — must state the peak latency figure.
  3. Root cause — must name the primary error code.
  4. Resolution — how it was mitigated.
  5. Follow-up actions — at least two.

Step 5 — Self-check

Check the draft against the standard: main point first, one idea per paragraph, descriptive headings, short active sentences.

Step 6 — Write the artifact and emit the completion token

Write the full report to a file at <TRIALS_DIR>/<TRIAL_ID>.md. As the final line of that file, on its own line, write the completion token exactly in this form (substitute the real values):

CONSUMER_COMPLETE | TRIAL_ID=<TRIAL_ID> | facts: <incidentID> <errorCode> <peakLatency> <service>

Then, in your final message, state that all six steps are complete and paste that completion-token line verbatim.

© 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-consumer-baseline of testdouble/han.

Open the folder on GitHubat commit abba73a

Compare with similar skills

Spike Consumer Baseline 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.

Spike Consumer Baseline compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Spike Consumer Baseline this skilltestdouble/han279—~667Automated safety check: PassMIT
Codflow Updatebighadj22/codflow346—~6.2kAutomated safety check: NotesApache-2.0
Simple Englishropensci/ckanr1043 repos~2kAutomated safety check: PassMIT
Dd Orchestratordatadog-labs/agent-skills177—~6.7kAutomated safety check: PassMIT
Documentation Strategyrampstackco/claude-skills940—~3.3kAutomated safety check: PassMIT
Narrative Enablement Kitaaron-he-zhu/aaron-marketing-skills2.9k—~3.4kAutomated safety check: PassApache-2.0

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Categories

Questions about Spike Consumer Baseline

What does Spike Consumer Baseline do?

OI-3 spike harness — heavy consumer skill, BASELINE arm. An agent skill from testdouble/han. Spike Consumer Baseline is an agent skill from testdouble/han. OI-3 spike harness — heavy consumer skill, BASELINE arm.

When should I use Spike Consumer Baseline?

Spike Consumer Baseline fits situations like: tasks that involve Plain language and style rules; tasks that involve Runbooks and postmortems.

How do I install Spike Consumer Baseline in Claude Code?

Run `npx skills add testdouble/han --skill spike-consumer-baseline -a claude-code`. Or copy the skill folder (docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-consumer-baseline in testdouble/han) into .claude/skills/spike-consumer-baseline in your project. Claude Code loads it when a task matches its description.

How do I install Spike Consumer Baseline in Codex?

Run `npx skills add testdouble/han --skill spike-consumer-baseline -a codex`. Or copy the skill folder (docs/plans/han-communication-plugin/artifacts/oi-3-spike/harness-skills/spike-consumer-baseline in testdouble/han) into .agents/skills/spike-consumer-baseline in your project. Codex loads it when a task matches its description.

Can I use Spike Consumer Baseline 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-consumer-baseline -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-consumer-baseline, .gemini/skills/spike-consumer-baseline, .github/skills/spike-consumer-baseline and .opencode/skills/spike-consumer-baseline in your project.

What does Spike Consumer Baseline need to run?

SKILL.md names no scripts, command-line tools or credentials: Spike Consumer Baseline is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write.

Does Spike Consumer Baseline 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 Consumer Baseline 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 Consumer Baseline use?

Spike Consumer Baseline 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 Consumer Baseline use?

About 667 tokens (SKILL.md is roughly 2.7k 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 Consumer Baseline?

Skills that share tags, products or a category with Spike Consumer Baseline: Codflow Update (bighadj22/codflow, 346 stars), Simple English (ropensci/ckanr, 104 stars), Dd Orchestrator (datadog-labs/agent-skills, 177 stars) and Documentation Strategy (rampstackco/claude-skills, 940 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Spike Consumer Baseline?

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.