What is mcp-simple-aivisspeech CLAUDE.md?

Project instructions for an MCP server that connects AI assistants to AivisSpeech, a text-to-speech engine that turns written text into spoken audio. The server sends speech requests to the engine and plays the resulting audio.

Use it when developing or troubleshooting the MCP server, its AivisSpeech client, tool handlers, or cross-platform audio playback.

It explains the project’s two-layer design, available tools, data flow, and development commands so changes fit the existing system.

How shinshin86/mcp-simple-aivisspeech configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to shinshin86/mcp-simple-aivisspeech. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/shinshin86/mcp-simple-aivisspeech/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/shinshin86/mcp-simple-aivisspeech

Made for: Claude Code.

Wrote this? Show the measurements

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README.md

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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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/shinshin86/mcp-simple-aivisspeech/claude-md"><img src="https://agentmods.dev/badge/instructions/shinshin86/mcp-simple-aivisspeech/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,350 This file is loaded in full into every session.

When invoked 1,350 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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 5.1	$0.01350	$0.01350
Opus 5	$0.00675	$0.00675
Sonnet 5	$0.00270	$0.00270
Haiku 4.5	$0.00135	$0.00135

Measured 10d ago against content hash d1a489705f92, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

mcp-simple-aivisspeech CLAUDE.md 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.

CLAUDE.md · 146 lines

How it starts

The opening of the file, as written. The whole thing — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

This is an MCP (Model Context Protocol) server that bridges AivisSpeech text-to-speech engine with MCP clients. The server exposes TTS functionality through standardized MCP tools and handles cross-platform audio playback.

Core Architecture

Two-Layer Design

MCP Server Layer (src/index.ts): Implements MCP protocol, handles tool requests, manages audio playback
API Client Layer (src/aivisspeech-client.ts): Abstracts AivisSpeech Engine HTTP API

Key Components

Server: Uses @modelcontextprotocol/sdk with stdio transport
Client: Axios-based HTTP client for AivisSpeech Engine API
Audio System: Cross-platform audio playback (afplay/powershell/aplay)
Tool Handlers: Four main tools exposed via MCP protocol

Data Flow

MCP client requests → stdio transport → tool handler
Tool handler → AivisSpeechClient → HTTP API
Audio data → temporary file → platform-specific player
Response back through MCP transport

Essential Commands

Development

npm run dev          # Run with hot reload using tsx
npm run build        # Compile TypeScript to dist/
npm start           # Run compiled server

Code Quality

npm run lint        # ESLint on src/**/*.ts
npm test           # Vitest tests (single run)
npm run test:watch # Vitest in watch mode
npm run test:ui    # Vitest with UI
npm run test:coverage # Tests with coverage report

Testing Individual Files

npx vitest run tests/aivisspeech-client.test.ts
# Or run in watch mode
npx vitest watch tests/aivisspeech-client.test.ts

Environment & Dependencies

Required Runtime

Node.js 18+ (ESM modules)
AivisSpeech Engine running on configurable port (default: 10101)

Key Dependencies

@modelcontextprotocol/sdk: MCP protocol implementation
axios: HTTP client for AivisSpeech API
tsx: Development hot reload
vitest: Modern test runner with ESM support

Read the full file on GitHub · 146 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.

10d ago First seen · 146 lines · 1,350 tokens per session scan A d1a489705f92

Subscribe to this mod's changes

mcp-simple-aivisspeech CLAUDE.md is an instructions file published in the GitHub repository shinshin86/mcp-simple-aivisspeech (8 stars, last pushed 1y ago), licensed Apache-2.0. It adds 1,350 tokens to every session, about $0.0068 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 2026-08-31.

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mcp-simple-aivisspeech: Instructions file for Claude Code