Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add lacolaco/claude-plugins/plugin install session-ttsWrote 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.
[](https://agentmods.dev/skills/lacolaco/claude-plugins/tts)<a href="https://agentmods.dev/skills/lacolaco/claude-plugins/tts"><img src="https://agentmods.dev/badge/skills/lacolaco/claude-plugins/tts/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.
<a href="https://agentmods.dev/skills/lacolaco/claude-plugins/tts"><img src="https://agentmods.dev/badge/skills/lacolaco/claude-plugins/tts.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 5.1 | $0.00093 | $0.00427 |
| Opus 5.5 | $0.00037 | $0.00171 |
| Sonnet 5.5 | $0.00019 | $0.00085 |
| Haiku 4.5 | $0.00009 | $0.00043 |
Grade A, and why
tts scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
TTS toggle ($ARGUMENTS)
The session-tts plugin reads Claude responses aloud via Stop, StopFailure, and Notification hooks. A SessionStart hook assigns this session a voice and marks it ON automatically (unless SESSION_TTS_ENABLED=0), so every new session speaks by default. This skill is the override path: silence the current session, re-enable after silencing, or check status.
The voice assigned to this session is decided once at SessionStart and stays the same even after tts off/tts on — only playback is gated.
The silence flag lives at $HOME/.claude/session-tts/sessions/$CLAUDE_CODE_SESSION_ID/silenced: when present, the dispatcher skips playback for this session. Other concurrent sessions stay as they are. Switching to off (directly or via toggle) additionally terminates any utterance that is still playing for this session, so the silence takes effect immediately rather than draining the current chunk queue. When tts on is called on a session that was silenced at start (via SESSION_TTS_ENABLED=0), it performs late activation: removes the silenced flag, ensures the engine is running, and injects the narration context.
Run the action below with the Bash tool. Default to status when $ARGUMENTS is empty.
bash "${CLAUDE_PLUGIN_ROOT}/skills/tts/tts.sh" "$ARGUMENTS"
Execute the requested action and report the resulting line. No additional explanation is needed.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 21 lines · 93 tokens per session scan A 33f1d5ac6b17
tts is a skill published in the GitHub repository lacolaco/claude-plugins (5 stars, last pushed 10d ago), licensed MIT. It adds 93 tokens to every session and 427 once invoked, about $0.0004 per session on Opus 5.5. 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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