A command for changing voice effects in text-to-speech (TTS), which turns written text into spoken audio. It supports reverb settings and lists echo, pitch, and equalizer options marked as coming soon.

Use it to turn reverb on or off, set its level, preview an effect, or apply it to the default voice, a named agent, or all agents.

It lets you control how generated speech sounds instead of using one fixed voice treatment.

effects — Command by paulpreibisch

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.

agentmods

npx agentmods add commands/paulpreibisch/agentvibes/effects

Clone the repo

git clone --depth 1 https://github.com/paulpreibisch/AgentVibes

Made for: Claude Code.

Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 635 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

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	$0.00017	$0.00635
Opus 5	$0.00009	$0.00318
Sonnet 5	$0.00003	$0.00127
Haiku 4.5	$0.00002	$0.00064

Measured 2d ago against content hash c7df70141bee, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

effects 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 2d 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/commands/agent-vibes/effects.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Configure voice effects for TTS output. Effects can be applied globally, to specific agents, or to the default voice.

Usage

/agent-vibes:effects <effect> <level> [--agent <name>] [--all]
/agent-vibes:effects list
/agent-vibes:effects demo <effect>

Available Effects

Reverb

Adds room/space ambiance to the voice.

/agent-vibes:effects reverb off          # No reverb
/agent-vibes:effects reverb light        # Small room
/agent-vibes:effects reverb medium       # Conference room
/agent-vibes:effects reverb heavy        # Large hall
/agent-vibes:effects reverb cathedral    # Massive space

Echo (coming soon)

/agent-vibes:effects echo off|light|medium|heavy

Pitch (coming soon)

/agent-vibes:effects pitch normal|low|high|deep|chipmunk

EQ (coming soon)

/agent-vibes:effects eq flat|warm|bright|radio|telephone

Targeting

By default, effects apply to the default config (used when no agent specified).

# Apply to default
/agent-vibes:effects reverb medium

# Apply to specific agent
/agent-vibes:effects reverb heavy --agent Winston

# Apply to all agents
/agent-vibes:effects reverb medium --all

Examples

# Give Winston a cathedral reverb
/agent-vibes:effects reverb cathedral --agent Winston

# Set medium reverb for everyone
/agent-vibes:effects reverb medium --all

# Turn off reverb for John
/agent-vibes:effects reverb off --agent John

# List current effects for all agents
/agent-vibes:effects list

# Demo reverb levels
/agent-vibes:effects demo reverb

Effect Levels Reference

Effect	Level	Sox Command	Description
reverb	off	(none)	Dry voice
reverb	light	reverb 20 50 50	Small room
reverb	medium	reverb 40 50 70	Conference room
reverb	heavy	reverb 70 50 100	Large hall
reverb	cathedral	reverb 90 30 100	Epic space

Requirements

sox must be installed for effects to work
Install on macOS: brew install sox
Install on Linux/WSL: apt install sox

Read the full file on GitHub · 98 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.

2d ago First seen · 98 lines · 17 tokens per session scan A c7df70141bee

Subscribe to this mod's changes

effects is a command published in the GitHub repository paulpreibisch/AgentVibes (153 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 17 tokens to every session and 635 once invoked, about $0.0001 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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effects