voice-likeness-eval

christos-antono/NPCTalk AI & ML engineering Writing & content

voice-likeness-eval is a skill in christos-antono/NPCTalk, last changed 15 Oct 2026. It can run shell commands.

From the author

Measure how much a cloned voice sounds like the real character, and whether a change really helped. Covers speaker-embedding similarity (ECAPA) against the centroid of held-out real clips, word error rate with Whisper, comparing per line with paired t-tests, how many runs it takes to beat sampling noise, checking a take-picker with an independent speaker model, and simulating picking strategies on many scored takes. Use when comparing voice engines or settings (Fish Audio Drama 3 vs S2 Pro vs ElevenLabs, sampling, reference clips, best-of-N, fine-tuning), or before telling anyone that one voice setup is better than another.

What it can touch

Runs shell commands

How much a skill can do, not whether it is risky.

Pattern check

Nothing flagged

That isn't proof the skill is harmless.

Commit 59635ce · 3 Nov 2026

How the check works

Pattern check: nothing flagged

That isn't proof the skill is harmless.

Install

Each tab says whether it installs commit 59635ce, the one we checked, or the latest version.

OpenCode also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Goose also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Windsurf (Devin Desktop) also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Zed also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Roo Code also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Factory Droid also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Junie also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

Amp also looks in .agents/skills/ and ~/.agents/skills/, so use the Any agent steps.

No install command here reaches Kiro. Copy the skill's folder into .kiro/skills/ in your project, or ~/.kiro/skills/ for all your projects. christos-antono/NPCTalk/skills/voice-likeness-eval (opens in a new tab)

Antigravity also looks in .agents/skills/, so the Any agent steps reach it with This project. For All projects, see where Antigravity looks.

Cline also looks in .claude/skills/, so the Claude Code steps reach it with This project. For All projects, see where Cline looks.

No tab for your agent? Use Any agent for OpenCode, Goose, Windsurf (Devin Desktop), Zed, Roo Code, Factory Droid, Junie and Amp. With This project, Any agent also reaches Antigravity and Claude Code reaches Cline. Kiro needs the folder copied by hand.

Pinned to commit 59635ce, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/christos-antono/NPCTalk.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&git -C "$tmp" sparse-checkout set -- skills/voice-likeness-eval &&git -C "$tmp" checkout -q 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&mkdir -p .claude/skills &&mkdir .claude/skills/voice-likeness-eval &&cp -R "$tmp"/skills/voice-likeness-eval/. .claude/skills/voice-likeness-eval/ &&rm -rf "$tmp"

If Claude Code was already running and this created the skills folder, run /reload-skills.

Or install the npctalk plugin it ships in. Installs the latest version, not the one we checked. Installs everything in the plugin, including any hooks, MCP servers and scripts our check doesn't cover.

claude plugin marketplace add christos-antono/NPCTalk --scope project &&claude plugin install npctalk@npctalk --scope project

Claude Code docs

Pinned to commit 59635ce, the one we checked.

Skills in the Claude apps belong to your account rather than to a project.

Make voice-likeness-eval.zip, with the skill folder at the top level:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/christos-antono/NPCTalk.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&git -C "$tmp" sparse-checkout set -- skills/voice-likeness-eval &&git -C "$tmp" checkout -q 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&out="$(mktemp -d)" &&cp -R "$tmp"/skills/voice-likeness-eval "$out"/voice-likeness-eval &&(cd "$out" && zip -qr - voice-likeness-eval) > voice-likeness-eval.zip &&rm -rf "$tmp" "$out"

In Claude, open Customize > Skills, select +, then + Create skill > Upload a skill, and choose voice-likeness-eval.zip.

On Free, Pro and Max plans, turn on Code execution and file creation (Create and edit files in newer settings) under Settings > Capabilities.

Claude apps docs

Pinned to commit 59635ce, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/christos-antono/NPCTalk.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&git -C "$tmp" sparse-checkout set -- skills/voice-likeness-eval &&git -C "$tmp" checkout -q 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&mkdir -p .agents/skills &&mkdir .agents/skills/voice-likeness-eval &&cp -R "$tmp"/skills/voice-likeness-eval/. .agents/skills/voice-likeness-eval/ &&rm -rf "$tmp"

Codex picks up new skills on its own; restart it if this one does not appear.

Codex docs

Pinned to commit 59635ce, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/christos-antono/NPCTalk.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&git -C "$tmp" sparse-checkout set -- skills/voice-likeness-eval &&git -C "$tmp" checkout -q 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&mkdir -p .cursor/skills &&mkdir .cursor/skills/voice-likeness-eval &&cp -R "$tmp"/skills/voice-likeness-eval/. .cursor/skills/voice-likeness-eval/ &&rm -rf "$tmp"

Cursor docs

Pinned to commit 59635ce, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/christos-antono/NPCTalk.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&git -C "$tmp" sparse-checkout set -- skills/voice-likeness-eval &&git -C "$tmp" checkout -q 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&mkdir -p .github/skills &&mkdir .github/skills/voice-likeness-eval &&cp -R "$tmp"/skills/voice-likeness-eval/. .github/skills/voice-likeness-eval/ &&rm -rf "$tmp"

In a running Copilot CLI session, run /skills reload.

Or install it with gh skill, which also installs the commit we checked. Needs GitHub CLI 2.90 or later.

gh skill install christos-antono/NPCTalk skills/voice-likeness-eval/SKILL.md@59635ceb8ee010599c3caf9d9d1ee1aa114af91d --agent github-copilot --scope project

Copilot & VS Code docs

Pinned to commit 59635ce, the one we checked.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/christos-antono/NPCTalk.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&git -C "$tmp" sparse-checkout set -- skills/voice-likeness-eval &&git -C "$tmp" checkout -q 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&mkdir -p .gemini/skills &&mkdir .gemini/skills/voice-likeness-eval &&cp -R "$tmp"/skills/voice-likeness-eval/. .gemini/skills/voice-likeness-eval/ &&rm -rf "$tmp"

In a running session, run /skills reload.

Or use Gemini CLI’s own installer. Installs the latest version, not the one we checked.

gemini skills install https://github.com/christos-antono/NPCTalk.git --path skills/voice-likeness-eval --scope workspace

Gemini CLI docs

Pinned to commit 59635ce, the one we checked.

OpenCode, Goose, Windsurf (Devin Desktop), Zed, Roo Code, Factory Droid, Junie, Amp and Antigravity read .agents/skills in a project.

From your project's root folder:

tmp="$(mktemp -d)" &&git clone -q --depth 1 --filter=blob:none --no-checkout https://github.com/christos-antono/NPCTalk.git "$tmp" &&git -C "$tmp" fetch -q --depth 1 origin 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&git -C "$tmp" sparse-checkout set -- skills/voice-likeness-eval &&git -C "$tmp" checkout -q 59635ceb8ee010599c3caf9d9d1ee1aa114af91d &&mkdir -p .agents/skills &&mkdir .agents/skills/voice-likeness-eval &&cp -R "$tmp"/skills/voice-likeness-eval/. .agents/skills/voice-likeness-eval/ &&rm -rf "$tmp"

Or use the skills CLI from skills.sh. Installs the latest version, not the one we checked. The skills CLI reports installs to skills.sh unless you set DISABLE_TELEMETRY=1.

npx skills@1.7.4 add christos-antono/NPCTalk --skill voice-likeness-eval

Agent Skills docs

Read SKILL.md first

MIT

Licence

215

Repo stars

Folder last changed

Publisher

Files

Checked

3 Nov 2026

What it can touch

From the files and frontmatter at commit 59635ce. This is how much a skill can do, not whether it is risky.

Runs shell commands
Its instructions or files give the agent commands to run on your computer.

Pattern check

Pattern check: nothing flagged · commit 59635ce · 3 Nov 2026

We checked every text file in this skill, at commit 59635ce on 3 Nov 2026, against 45 published patterns such as download-and-run commands, hidden text and credential access. We don't run the skill, we don't read the web pages it points to, and we can't judge everything its instructions might lead an agent to do. In published tests, pattern checks like this one missed most malicious skills. Read the skill before you install it — especially anything it asks you to download or run.

How the check works Report an incorrect finding

Format check

Each agent reads SKILL.md a little differently. We check the file against each one's published rules; we don't run the skill in any agent.

Agent Skills specPasses
The open format from agentskills.io, held to the strictest version of each rule among the agents we check.
- Note
  There is no license field, so readers can't tell whether they may reuse the skill. O2
  Fix: Add license: with an SPDX name such as MIT or Apache-2.0, or the name of a bundled licence file.
Claude CodePasses
Claude apps & API uploadPasses
Uploading to claude.ai or the Claude API, or packaging with Anthropic's script, accepts only the six spec fields and stops on anything else.
- Note
  The description is 631 characters. The claude.ai Help Center says 200 at most, though Anthropic's API docs and validator allow 1,024. D4
  Fix: If the claude.ai upload refuses it, trim the description to 200 characters.
OpenAI (Codex & API)Passes
VS Code & CopilotPasses

SKILL.md

Read SKILL.md on GitHub

Files

1 file

Path	Size
SKILL.md (opens in a new tab)	4.1 KB

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All skills in christos-antono/NPCTalk

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At a glance

What it can touch

Pattern check

Install

Claude Code

Claude apps

Codex

Cursor

Copilot & VS Code

Gemini CLI

Any agent

What it can touch

Pattern check

Format check

SKILL.md

Files

More from christos-antono/NPCTalk

Other AI & ML engineering skills