research-closure-harness: Skill for Claude Code

.agents/skills/research-closure/SKILL.md

research-closure is a skill for Claude Code, Codex from Shiien/research-closure-harness. It costs 39 tokens per session (652 once invoked), scanned A, original, MIT.

A research workflow that links a claim to a testable hypothesis, a bounded experiment, evidence, a decision, and a written record. It is intended for research projects involving experiments or analysis.

In plain words
What is it for?
Planning experiments, implementing research code, analysing results, changing research scope, checking the claim graph, and preparing weekly updates.
Why use it?
It prevents open-ended research work from growing without a clear question, measurement, decision, or stopping rule.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is Shiien/research-closure-harness's own configuration. It tells Claude Code and Codex how to work on research-closure-harness itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything research-closure-harness configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python tools/research_closure.py guard.

Reuse

Borrowing it

Nothing to install: this file belongs to Shiien/research-closure-harness. 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/Shiien/research-closure-harness/main/.agents/skills/research-closure/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Shiien/research-closure-harness

Made for: Claude Code, Codex.

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.

agentmods badge for research-closure

README.md
[![agentmods](https://agentmods.dev/badge/skills/shiien/research-closure-harness/research-closure/github.svg)](https://agentmods.dev/skills/shiien/research-closure-harness/research-closure)
Your own site
<a href="https://agentmods.dev/skills/shiien/research-closure-harness/research-closure"><img src="https://agentmods.dev/badge/skills/shiien/research-closure-harness/research-closure/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.

agentmods 80×15 button for research-closure

Your own site · 80×15
<a href="https://agentmods.dev/skills/shiien/research-closure-harness/research-closure"><img src="https://agentmods.dev/badge/skills/shiien/research-closure-harness/research-closure.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 652 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00039 $0.00652
Opus 5 $0.00019 $0.00326
Sonnet 5 $0.00008 $0.00130
Haiku 4.5 $0.00004 $0.00065

Measured 11d ago against content hash efe6628a1820, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

research-closure 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 11d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.agents/skills/research-closure/SKILL.md · 133 lines

How it starts

The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Research Closure Skill

Objective

Turn open-ended research into small, inspectable, closed units.

The governing loop is:

Frozen claim
→ falsifiable hypothesis
→ bounded test
→ evidence
→ explicit decision
→ written artifact

Start-of-task protocol

Read .research/state.json and .research/claim_graph.json (the claim graph is the engine), then run:

python tools/research_closure.py guard
python tools/claim_graph.py frontier
python tools/research_closure.py next

Report:

Frozen claim:
Session deliverable:
Out of scope:
Ready frontier:      (the probes whose guards are satisfied)
Resolution map:      determined (<verdict>) | open

If there is no frozen claim, do not create a large implementation. Help define a 7–14 day claim first, then author the claim graph (claim_graph.py init --claim "...", then add-variable / add-edge / add-absent / add-probe / add-resolution, then validate) before start-sprint.

New-experiment gate

Before coding, require all fields:

Question:
Hypothesis:
Intervention:
Measurement:
Expected artifact:
Kill criterion:
Time budget:
Claim-graph probe:   (the P-node this experiment runs; must be on the ready frontier)

Reject vague tasks such as:

  • “explore whether this works”;
  • “try several alternatives”;
  • “improve the method”;
  • “find a better objective”.

Rewrite them as a single testable claim.

Result gate

Every experiment ends in exactly one decision:

  • supported
  • falsified
  • inconclusive
  • terminated

“Inconclusive” must name a specific defect, such as estimator variance, implementation uncertainty, insufficient intervention range, or metric saturation.

Never accept “needs more experiments” as a complete decision.

Scope gate

A new idea is in scope only if success or failure directly changes confidence in the frozen claim.

Otherwise:

python tools/research_closure.py add-idea \
  --idea "..." \
  --reason "Does not test the current frozen claim."

Read the full file on GitHub · 133 lines

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.

  1. 11d ago First seen · 133 lines · 39 tokens per session scan A efe6628a1820

Subscribe to this mod's changes

research-closure is a skill published in the GitHub repository Shiien/research-closure-harness (10 stars, last pushed 17d ago), licensed MIT. It adds 39 tokens to every session and 652 once invoked, about $0.0002 per session on Opus 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 2026-08-31.

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