LLM Evaluation
davila7/claude-code-templates
Master comprehensive evaluation strategies for LLM applications, from automated metrics to human evaluation and A/B testing.
A decision-support framework that evaluates systems, architectures, and strategies through the entropy (decay) vs negentropy (growth) lens, while surfacing tacit knowledge gaps.
$ npx skills add bencium/bencium-marketplace --skill negentropy-lens -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install bencium/bencium-marketplace negentropy-lens --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/bencium/bencium-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/negentropy-lens/skills/negentropy-lens .claude/skills/negentropy-lens && 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 "negentropy-lens" agent skill from https://github.com/bencium/bencium-marketplace/tree/main/negentropy-lens/skills/negentropy-lens into .claude/skills/negentropy-lens/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "negentropy-lens", 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/bencium/bencium-marketplace/tree/main/negentropy-lens/skills/negentropy-lensType 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 bencium/bencium-marketplace --skill negentropy-lens -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install bencium/bencium-marketplace negentropy-lens --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/bencium/bencium-marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/negentropy-lens/skills/negentropy-lens .agents/skills/negentropy-lens && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "negentropy-lens" agent skill from https://github.com/bencium/bencium-marketplace/tree/main/negentropy-lens/skills/negentropy-lens into .agents/skills/negentropy-lens/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "negentropy-lens", 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 bencium/bencium-marketplace --skill negentropy-lens -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install bencium/bencium-marketplace negentropy-lens --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/bencium/bencium-marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/negentropy-lens/skills/negentropy-lens .cursor/skills/negentropy-lens && 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 "negentropy-lens" agent skill from https://github.com/bencium/bencium-marketplace/tree/main/negentropy-lens/skills/negentropy-lens into .cursor/skills/negentropy-lens/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "negentropy-lens", 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/bencium/bencium-marketplace.git --path negentropy-lens/skills/negentropy-lens--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 bencium/bencium-marketplace --skill negentropy-lens -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install bencium/bencium-marketplace negentropy-lens --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/bencium/bencium-marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/negentropy-lens/skills/negentropy-lens .gemini/skills/negentropy-lens && 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 "negentropy-lens" agent skill from https://github.com/bencium/bencium-marketplace/tree/main/negentropy-lens/skills/negentropy-lens into .gemini/skills/negentropy-lens/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "negentropy-lens", 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 bencium/bencium-marketplace negentropy-lensInstalls 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 bencium/bencium-marketplace --skill negentropy-lens -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/bencium/bencium-marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/negentropy-lens/skills/negentropy-lens .github/skills/negentropy-lens && 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 "negentropy-lens" agent skill from https://github.com/bencium/bencium-marketplace/tree/main/negentropy-lens/skills/negentropy-lens into .github/skills/negentropy-lens/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "negentropy-lens", 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 bencium/bencium-marketplace --skill negentropy-lens -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install bencium/bencium-marketplace negentropy-lens --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/bencium/bencium-marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/negentropy-lens/skills/negentropy-lens .opencode/skills/negentropy-lens && 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 "negentropy-lens" agent skill from https://github.com/bencium/bencium-marketplace/tree/main/negentropy-lens/skills/negentropy-lens into .opencode/skills/negentropy-lens/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "negentropy-lens", 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.
negentropy-lensA decision-support framework that evaluates systems, architectures, and strategies through the entropy (decay) vs negentropy (growth) lens, while surfacing tacit knowledge gaps.
Negentropy Lens is an agent skill from bencium/bencium-marketplace. A decision-support framework that evaluates systems, architectures, and strategies through the entropy (decay) vs negentropy (growth) lens, while surfacing tacit knowledge gaps. Use this skill whenever the user is making architecture decisions, evaluating system designs, reviewing technical approaches, choosing between options, auditing existing systems, or planning strategies. Also trigger when the user explicitly asks to "apply the negentropy lens", mentions "entropy", "negentropy", "tacit knowledge"…
Its SKILL.md is about 2.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/origin-essay.md`).
The repository describes itself as: comprehensive skills based on the Anthropic Skills guide and our design and development philosophy. The licence is MIT.
5 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit 5de46a3. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
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.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Negentropy Lens loads about 2.2k tokens when it runs, and up to ~3.6k if it reads all its reference files. Until then it costs about 187 tokens; SKILL.md has 1,066 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.
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.
The full file from bencium/bencium-marketplace at commit 5de46a3, republished under its MIT licence (© bencium). 1,066 words, ~2,152 tokens.
.claude/skills/negentropy-lens/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.A thinking framework for evaluating decisions, systems, and architectures through two fundamental system states: entropy (decay, disorder, complexity debt) and negentropy (growth, compounding value, increasing order).
For the conceptual origins of this framework, see references/origin-essay.md.
Every system exists in one of two states. Every decision either accelerates entropy or drives negentropy. There is no neutral. Inaction is entropic. The goal is not to eliminate entropy — it is to recognize which state a system is in, surface what is hidden, and make deliberate choices about direction.
On first use in every output, define these three terms inline using parentheses:
After the first parenthetical definition, use the terms freely without repeating the definition.
Signs of entropy in a system:
Signs of negentropy in a system:
When evaluating any system, architecture, or strategic choice, follow this sequence. Organize first. Challenge second.
Before judging anything, understand the landscape.
For each component and for the system as a whole, classify:
This is non-negotiable. Every decision analysis must probe for tacit knowledge.
Ask these questions — of the user, of the design, of the system:
What assumptions are we making that we haven't stated? Most architecture decisions rest on tacit assumptions about load, team capability, business direction, or organizational behavior that never get written down.
What's "the way things really work" vs what the documentation says? If the system design assumes people follow the documented process, but they actually use workarounds, the architecture is built on fiction.
Where does institutional memory live? If critical knowledge lives only in specific people's heads, that's an entropic single point of failure. A negentropic design externalizes it into the system.
What would a new team member not understand? This is a proxy for tacit knowledge density. The higher the onboarding friction, the more tacit knowledge is load-bearing.
What are we not seeing because we're inside the system? Tacit knowledge includes blind spots. The "obvious" choices that go unquestioned are often the most entropic.
For each option or proposed design, assess:
After organizing, push back constructively:
Adapt the format to context:
Architecture reviews: Use the full 5-phase process. Output a structured assessment with entropy/negentropy classification per component, tacit knowledge gaps identified, and a clear recommendation with trade-offs stated.
Quick decisions: Skip Phase 1 if the system is already understood. Focus on Phases 3-5. Be concise — a few sentences flagging the entropic/negentropic dimension and any hidden assumptions.
Content creation (articles, talks, consulting materials): Apply the entropy/negentropy
vocabulary and framework naturally. Ground abstract concepts in concrete examples. Refer to
references/origin-essay.md for the conceptual origins if context is needed.
Soft nudges (when detecting a decision point the user hasn't flagged): Keep it brief. One or two sentences noting the entropy/negentropy dimension. Don't derail the conversation — just surface the lens and let the user decide whether to go deeper.
© bencium, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 1 other file (references) in negentropy-lens/skills/negentropy-lens of bencium/bencium-marketplace.
Open the folder on GitHubat commit 5de46a3
Negentropy Lens 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 |
|---|---|---|---|---|---|---|
| Negentropy Lens this skillbencium/bencium-marketplace | 446 | — | ~2.2k | Automated safety check: Pass | MIT | |
| LLM Evaluationdavila7/claude-code-templates | 33k | 12 repos | ~3.5k | Automated safety check: Pass | MIT | |
| Architecture Patternswshobson/agents | 40k | — | ~2k | Automated safety check: Pass | MIT | |
| Arize Evaluatorgithub/awesome-copilot | 40k | 1 repos | ~8.1k | Automated safety check: Notes | MIT | |
| Test Architecture Strategyhashgraph-online/awesome-codex-plugins | 1.3k | — | ~824 | Automated safety check: Pass | MIT | |
| Android Clean Architectureaffaan-m/ECC | 276k | 4 repos | ~2.2k | Automated safety check: Pass | MIT |
davila7/claude-code-templates
Master comprehensive evaluation strategies for LLM applications, from automated metrics to human evaluation and A/B testing.
wshobson/agents
Implement proven backend architecture patterns including Clean Architecture, Hexagonal Architecture, and Domain-Driven Design.
github/awesome-copilot
Handles LLM-as-judge evaluation workflows on Arize including creating/updating evaluators, running evaluations on spans or experiments, managing tasks, trigger-run operations, column mapping, and…
hashgraph-online/awesome-codex-plugins
Design a sustainable test architecture using test desiderata, test pyramid tradeoffs, fast and slow test separation, integration boundaries, CI feedback loops, and architecture choices that make…
affaan-m/ECC
Applies Clean Architecture to Android and Kotlin Multiplatform projects: module layout, dependency rules, UseCases, Repositories and data layer patterns.
davila7/claude-code-templates
Master proven backend architecture patterns including Clean Architecture, Hexagonal Architecture, and Domain-Driven Design to build maintainable, testable, and scalable systems.
bencium/bencium-marketplace
Reviews codebases, architectures, PRs, and technical plans for vanity engineering — code and systems built for the developer's ego, resume, or intellectual pleasure rather than delivering user or…
bencium/bencium-marketplace
A skill your agent uses when detecting ambiguous user intent, hedging language, open-ended framing, personal context before requests, or when unsure whether user wants exploration vs direct answer.
bencium/bencium-marketplace
Grassroots-first campaign design for anyone being outspent — startups vs.
bencium/bencium-marketplace
Review user journeys, public content, and codebases for potentially relevant EU AI Act provisions, with exact official citations, evidence gaps, application dates, and plain-language next actions.
bencium/bencium-marketplace
Detect and remove AI-generated markers from Hungarian text, making it sound like a native Hungarian speaker wrote it.
bencium/bencium-marketplace
Professional typography rules for UI design, web applications, software interfaces, and all screen-based text.
A decision-support framework that evaluates systems, architectures, and strategies through the entropy (decay) vs negentropy (growth) lens, while surfacing tacit knowledge gaps. Negentropy Lens is an agent skill from bencium/bencium-marketplace. A decision-support framework that evaluates systems, architectures, and strategies through the entropy (decay) vs negentropy (growth) lens, while surfacing tacit knowledge gaps.
Negentropy Lens fits situations like: the user is making architecture decisions; evaluating system designs; reviewing technical approaches; choosing between options.
Run `npx skills add bencium/bencium-marketplace --skill negentropy-lens -a claude-code`. Or copy the skill folder (negentropy-lens/skills/negentropy-lens in bencium/bencium-marketplace) into .claude/skills/negentropy-lens in your project. Claude Code loads it when a task matches its description.
Run `npx skills add bencium/bencium-marketplace --skill negentropy-lens -a codex`. Or copy the skill folder (negentropy-lens/skills/negentropy-lens in bencium/bencium-marketplace) into .agents/skills/negentropy-lens in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add bencium/bencium-marketplace --skill negentropy-lens -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/negentropy-lens, .gemini/skills/negentropy-lens, .github/skills/negentropy-lens and .opencode/skills/negentropy-lens in your project.
SKILL.md names no scripts, command-line tools or credentials: Negentropy Lens is instructions for the agent only.
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.
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.
Negentropy Lens is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 2.2k tokens (SKILL.md is roughly 8.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.4k tokens, read only when the agent opens those files.
Skills that share tags, products or a category with Negentropy Lens: LLM Evaluation (davila7/claude-code-templates, 33k stars), Architecture Patterns (wshobson/agents, 40k stars), Arize Evaluator (github/awesome-copilot, 40k stars) and Test Architecture Strategy (hashgraph-online/awesome-codex-plugins, 1.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
bencium (a GitHub user) maintains it in bencium/bencium-marketplace, which has 446 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on October 4, 2026.
Source: bencium/bencium-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.