voice-line

voice-line is a skill for Claude Code from SummerEngine/summer-engine-agent. It costs 85 tokens per session (3,925 once invoked), scanned A, original, MIT.

A text-to-speech workflow for creating spoken game audio from written lines. Text-to-speech turns text into a generated voice recording, such as dialogue or narration.

In plain words
What is it for?
Use it for NPC barks, narrator lines, tutorials, menu announcements, and conversations between characters.
Why use it?
It helps choose and keep suitable voices for characters and adjust delivery settings for different kinds of speech.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions Claude Code; mentions Codex.

Part of the summer plugin — 80 skills, 2 commands, 2 hooks, 1 MCP server shipped together

Good fit Use it for NPC barks, narrator lines, tutorials, menu announcements, and conversations between characters.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/summerengine/summer-engine-agent/voice-line
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add SummerEngine/summer-engine-agent --skill voice-line
Clone the repo
git clone --depth 1 https://github.com/SummerEngine/summer-engine-agent

Made for: Claude Code.

Or install summer, the plugin that ships this one along with the rest of its 80 skills, 2 commands, 2 hooks, 1 MCP server.

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 voice-line

README.md
[![agentmods](https://agentmods.dev/badge/skills/summerengine/summer-engine-agent/voice-line/github.svg)](https://agentmods.dev/skills/summerengine/summer-engine-agent/voice-line)
Your own site
<a href="https://agentmods.dev/skills/summerengine/summer-engine-agent/voice-line"><img src="https://agentmods.dev/badge/skills/summerengine/summer-engine-agent/voice-line/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 voice-line

Your own site · 80×15
<a href="https://agentmods.dev/skills/summerengine/summer-engine-agent/voice-line"><img src="https://agentmods.dev/badge/skills/summerengine/summer-engine-agent/voice-line.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 85 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,925 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 244
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
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 $0.00085 $0.03925
Opus 5 $0.00043 $0.01962
Sonnet 5 $0.00017 $0.00785
Haiku 4.5 $0.00009 $0.00392

Measured 10d ago against content hash 07150b29e0e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

voice-line 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 10d 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:

skills/audio/voice-line/SKILL.md · 276 lines

How it starts

The opening of the file, as written. The whole thing — 276 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/voice-line — Generate TTS Voice for NPCs, Narrator, Dialogue

Overview

The hardest part of TTS isn't the line — it's picking the right voice. ElevenLabs ships hundreds; pick wrong and a tough warlord NPC sounds like a podcast host. There is no MCP tool that lists voices — the only voice-related input Summer exposes is the voiceId string on summer_generate_audio. So the voice pick has to come from the user (or from the project's cast bible), and this skill's job is to get that pick made deliberately and then locked.

Then it generates one line (or a multi-turn dialogue) with the right stability / style / similarity / speed for the delivery — flat for narration, expressive for a bark, fast for an excited shout.

When to use

  • NPC bark, narrator line, dialogue between two characters, tutorial voice, menu announcer.
  • Multi-line conversation with two or more voices → use text_to_dialogue capability.

When NOT to use

  • Non-verbal vocal SFX (grunt, scream) → audio/sound-effect with prompt male grunt of pain, mid-thirties, sharp, 400ms.
  • Pre-recorded voice from a real actor — import the .mp3 / .wav with summer_import_from_url and skip TTS.

Steps

1. Read the audio bible and any character notes

Read .summer/audio-bible.md
Read .summer/memory/casting/voices.md   # preferred cast memory, if present
Read .summer/voice-cast.md              # legacy cast memory, if present
Read .summer/characters.md   # if present
Glob .summer/characters/*.md
Glob .summer/memory/characters/*.md

If a character bible exists, the voice should match the character's age / gender / regional origin / energy. If it doesn't, ask:

Tell me the character: gender, rough age, accent or regional flavor, and energy (calm / measured / excited / gruff). Or just give me a reference — "sounds like the captain in Mass Effect" works.

2. Get the voice id

Check the cast bible first (step 1). If the character already has a locked id, use it and skip to step 5.

Read the full file on GitHub · 276 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. 10d ago First seen · 276 lines · 85 tokens per session scan A 07150b29e0e4

Subscribe to this mod's changes

voice-line is a skill published in the GitHub repository SummerEngine/summer-engine-agent (59 stars, last pushed yesterday), licensed MIT. It adds 85 tokens to every session and 3,925 once invoked, about $0.0004 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 2026-08-30.

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