fish-audio-tts

fish-audio-tts is a skill for Claude Code, Codex from calesthio/generative-media-skills. It costs 163 tokens per session (6,619 once invoked), scanned A, original, MIT.

A guide to Fish Audio’s hosted text-to-speech and voice-cloning service, alongside its separately licensed open-weight models for self-hosting. It explains that the hosted models and downloadable models are different products with different licenses.

In plain words
What is it for?
Use it for narration, dialogue, streaming speech, instant or persistent voice cloning, and self-hosted experiments where the model and license are appropriate.
Why use it?
It prevents developers from assuming that an openly published Fish-related model can be used commercially. It also helps them choose between the hosted API and self-hosted speech generation.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Good fit Use it for narration, dialogue, streaming speech, instant or persistent voice cloning, and self-hosted experiments where the model and license are appropriate.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/calesthio/generative-media-skills/fish-audio-tts
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 calesthio/generative-media-skills --skill fish-audio-tts
Clone the repo
git clone --depth 1 https://github.com/calesthio/generative-media-skills

Made for: Claude Code, Codex.

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 fish-audio-tts

README.md
[![agentmods](https://agentmods.dev/badge/skills/calesthio/generative-media-skills/fish-audio-tts/github.svg)](https://agentmods.dev/skills/calesthio/generative-media-skills/fish-audio-tts)
Your own site
<a href="https://agentmods.dev/skills/calesthio/generative-media-skills/fish-audio-tts"><img src="https://agentmods.dev/badge/skills/calesthio/generative-media-skills/fish-audio-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.

agentmods 80×15 button for fish-audio-tts

Your own site · 80×15
<a href="https://agentmods.dev/skills/calesthio/generative-media-skills/fish-audio-tts"><img src="https://agentmods.dev/badge/skills/calesthio/generative-media-skills/fish-audio-tts.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 163 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,619 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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: 4 findings, 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 Data Exfiltration · line 46
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 48
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 239
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Data Exfiltration · line 239
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 $0.00163 $0.06619
Opus 5 $0.00081 $0.03309
Sonnet 5 $0.00033 $0.01324
Haiku 4.5 $0.00016 $0.00662

Measured 9d ago against content hash 9f391744bad8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

fish-audio-tts scanned grade A with 1 finding 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 9d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s https://api.fish.audio/v1/tts \
skills/providers/text-to-speech/fish-audio-tts/SKILL.md · 321 lines

How it starts

The opening of the file, as written. The whole thing — 321 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Fish Audio text-to-speech and voice cloning

Fish Audio is a TTS and voice-cloning provider with two distinct product surfaces that share a lineage but differ in licensing and operation:

  1. Hosted API (api.fish.audio) — the commercial service. Current lineup is branded S2.1-Pro / S2-Pro / S1. Paid per UTF-8 byte, streaming, cloning, and a free tier.
  2. Open weights — released under the OpenAudio brand (and earlier as Fish-Speech). Downloadable from Hugging Face and GitHub for self-hosting.

The single most important fact to get right: the hosted API and the open weights are not the same models, and their licenses differ. The full flagship weights are hosted-only; only smaller distilled weights are openly published, and those carry a non-commercial license. Never assume "Fish is open source, so I can self-host it commercially" — verify which artifact and which license apply. See Open weights and self-hosting below.

All model names, prices, endpoints, and limits below are volatile. Verification date for every dated claim in this document: 2026-07-10. Re-verify against docs.fish.audio before quoting these to a user as current.

Labels used throughout:

  • [Doc] — stated in official Fish Audio / OpenAudio documentation, model cards, or their published technical reports.
  • [Claim] — a first-party marketing or benchmark claim from Fish Audio/OpenAudio; treat as their assertion, not independently established.
  • [Heuristic] — a production judgment from practice, not a documented guarantee.

When to use Fish Audio (and when not to)

Reach for Fish Audio when:

  • You need low-cost, expressive multilingual TTS with strong voice cloning from short reference audio.
  • You want fine-grained emotional/paralinguistic control through inline markers, not just SSML prosody.
  • You need a real-time streaming voice for an agent (WebSocket, sub-second time-to-first-audio). [Claim]
  • You want the option to self-host later, or to prototype locally on the open weights before committing to the API.

Read the full file on GitHub · 321 lines

Files

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.

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. 9d ago First seen · 321 lines · 163 tokens per session scan A 9f391744bad8

Subscribe to this mod's changes

fish-audio-tts is a skill published in the GitHub repository calesthio/generative-media-skills (171 stars, last pushed 2mo ago), licensed MIT. It adds 163 tokens to every session and 6,619 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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