Quote-first, non-custodial x402 text-to-speech with spend policy, MP3 artifacts, and receipts.
Connect Runs on your machine
claude mcp add tts -e UNLIMITEDTTS_ENVIRONMENT=<UNLIMITEDTTS_ENVIRONMENT> -e UNLIMITEDTTS_MAX_USDC_PER_CALL=<UNLIMITEDTTS_MAX_USDC_PER_CALL> -e UNLIMITEDTTS_ROLLING_24H_USDC=<UNLIMITEDTTS_ROLLING_24H_USDC> -e UNLIMITEDTTS_OUTPUT_DIRECTORY=<UNLIMITEDTTS_OUTPUT_DIRECTORY> -- npx -y @unlimitedtts/[email protected]{
"mcpServers": {
"tts": {
"command": "npx",
"args": [
"-y",
"@unlimitedtts/[email protected]"
],
"env": {
"UNLIMITEDTTS_ENVIRONMENT": "<UNLIMITEDTTS_ENVIRONMENT>",
"UNLIMITEDTTS_MAX_USDC_PER_CALL": "<UNLIMITEDTTS_MAX_USDC_PER_CALL>",
"UNLIMITEDTTS_ROLLING_24H_USDC": "<UNLIMITEDTTS_ROLLING_24H_USDC>",
"UNLIMITEDTTS_OUTPUT_DIRECTORY": "<UNLIMITEDTTS_OUTPUT_DIRECTORY>"
}
}
}
}{
"mcpServers": {
"tts": {
"command": "npx",
"args": [
"-y",
"@unlimitedtts/[email protected]"
],
"env": {
"UNLIMITEDTTS_ENVIRONMENT": "<UNLIMITEDTTS_ENVIRONMENT>",
"UNLIMITEDTTS_MAX_USDC_PER_CALL": "<UNLIMITEDTTS_MAX_USDC_PER_CALL>",
"UNLIMITEDTTS_ROLLING_24H_USDC": "<UNLIMITEDTTS_ROLLING_24H_USDC>",
"UNLIMITEDTTS_OUTPUT_DIRECTORY": "<UNLIMITEDTTS_OUTPUT_DIRECTORY>"
}
}
}
}{
"servers": {
"tts": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@unlimitedtts/[email protected]"
],
"env": {
"UNLIMITEDTTS_ENVIRONMENT": "<UNLIMITEDTTS_ENVIRONMENT>",
"UNLIMITEDTTS_MAX_USDC_PER_CALL": "<UNLIMITEDTTS_MAX_USDC_PER_CALL>",
"UNLIMITEDTTS_ROLLING_24H_USDC": "<UNLIMITEDTTS_ROLLING_24H_USDC>",
"UNLIMITEDTTS_OUTPUT_DIRECTORY": "<UNLIMITEDTTS_OUTPUT_DIRECTORY>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
UNLIMITEDTTS_ENVIRONMENTOptional | Runtime environment. Defaults to production; staging explicitly selects the staging API and Base Sepolia pins. |
UNLIMITEDTTS_MAX_USDC_PER_CALLOptional | Maximum authorized USDC amount for one synthesis. |
UNLIMITEDTTS_ROLLING_24H_USDCOptional | Maximum committed, unknown, and reserved spend in a rolling 24-hour window. |
UNLIMITEDTTS_OUTPUT_DIRECTORYOptional | Absolute approved directory for private MP3 artifacts and sanitized receipts. |
Details
| Package | @unlimitedtts/[email protected] (NPM, stdio) |
| First published | 22 Aug 2026 |
| Last updated | 22 Aug 2026 |
| Registry name | com.unlimitedtts/tts |
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