A method for designing, tracking, or reviewing an N-of-1 self-experiment, meaning a structured test carried out by one person. It uses criteria decided before the test and includes a safety boundary for prescription medicines.

Testing a supplement, habit, or protocol, checking active experiments, and evaluating an experiment when its review date arrives.

Pre-set criteria reduce the risk of changing the rules after seeing the results and help keep personal testing organized.

How gtr36/personal-health-graph configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to gtr36/personal-health-graph. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/gtr36/personal-health-graph/main/.claude/skills/experiment/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/gtr36/personal-health-graph

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/gtr36/personal-health-graph/experiment/github.svg)](https://agentmods.dev/skills/gtr36/personal-health-graph/experiment)

Your own site

<a href="https://agentmods.dev/skills/gtr36/personal-health-graph/experiment"><img src="https://agentmods.dev/badge/skills/gtr36/personal-health-graph/experiment/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/gtr36/personal-health-graph/experiment"><img src="https://agentmods.dev/badge/skills/gtr36/personal-health-graph/experiment.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 143 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00143
Opus 5.5	$0.00021	$0.00057
Sonnet 5.5	$0.00011	$0.00029
Haiku 4.5	$0.00005	$0.00014

Measured 2mo ago against content hash e2547ab19821, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

experiment 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 2mo 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.

.claude/skills/experiment/SKILL.md · 7 lines

What it actually says

Read skills/EXPERIMENT.md and execute the skill as specified. Infer the mode (design, status check, or evaluate) from the request. The skill file contains the complete methodology, including the pre-commitment discipline and the safety boundary around prescription medications. Write designs and results to EXPERIMENTS.md and save evaluation reports to the location specified in its saves_to: field.

Changes

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.

2mo ago First seen · 7 lines · 53 tokens per session scan A e2547ab19821

Subscribe to this mod's changes

experiment is a skill published in the GitHub repository gtr36/personal-health-graph (20 stars, last pushed 2mo ago), licensed MIT. It adds 53 tokens to every session and 143 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 2026-08-30.

Scientific

experiment next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
experimentgtr36/personal-health-graph	Skill	20	2mo ago	MIT	A	53	Claude Code
instrument-data-to-allotropeanthropics/knowledge-work-plugins	Skill	35k	2d ago	Apache-2.0	A	123	Claude Code
exploratory-data-analysisK-Dense-AI/scientific-agent-skills	Skill	56k	4d ago	MIT	A	83	Claude Code
matlabK-Dense-AI/scientific-agent-skills	Skill	56k	4d ago	MIT	A	44	Claude Code
phylogeneticsK-Dense-AI/scientific-agent-skills	Skill	56k	4d ago	MIT	A	71	Claude Code, Codex
research-engineerdavila7/claude-code-templates	Skill	33k	yesterday	MIT	A	43	Claude Code, Codex
mapping-to-snomedmaziyarpanahi/openmed	Skill	5.8k	yesterday	Apache-2.0	A	205	Claude Code

personal-health-graph: Skill for Claude Code