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Transcribe audio/video and find dead air. Pay-per-call in USDC over x402 — no account, no key.
About
Transcribe audio/video and find dead air. Pay-per-call in USDC over x402 — no account, no key.
Security Report
This is a well-designed MCP server for audio/video transcription with a pay-per-call model using x402 and USDC. The code demonstrates strong security practices: wallet keys are read from environment variables only (not hardcoded), all user input is validated locally before any payment, spending is capped, and error handling is comprehensive with no sensitive data logging. The primary permission required is network_http (to call the transcription service), which is appropriate for its purpose. Minor quality findings around broad error handling do not materially impact security. Supply chain analysis found 3 known vulnerabilities in dependencies (0 critical, 3 high severity). Package verification found 1 issue.
7 files analyzed · 7 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: TRANSCRIBE_MCP_WALLET_KEY
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-soboljem-transcribe-mcp": {
"env": {
"TRANSCRIBE_MCP_WALLET_KEY": "your-transcribe-mcp-wallet-key-here"
},
"args": [
"-y",
"transcribe-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
transcribe-mcp
Transcribe audio and video, and find the silence worth cutting — from any MCP client. No account, no API key, no subscription. Your agent pays a fraction of a cent per call, in USDC, straight from a wallet you control.
{
"mcpServers": {
"transcribe": {
"command": "npx",
"args": ["-y", "transcribe-mcp"],
"env": { "TRANSCRIBE_MCP_WALLET_KEY": "0x..." }
}
}
}
That is the whole setup. There is nothing to sign up for.
Tools
| tool | what it does | price |
|---|---|---|
transcribe_url | a public audio/video URL → text, timings, detected language | $0.05 |
find_dead_air | subtitles or timings → the spans worth cutting, and what you'd save | $0.002 |
shop_info | prices, limits and how payment works | free |
find_dead_air eats exactly what transcribe_url returns, so the two chain:
transcribe a talk, then cut the silence out of it.
"cuts": [{ "from": 2.55, "to": 10.85, "seconds": 8.3, "reason": "silence" }],
"stats": { "sourceSeconds": 20, "speechSeconds": 5.05, "wouldSavePercent": 74.75 }
Why pay-per-call instead of an API key
Because an agent cannot fill in a signup form. x402 is an HTTP-native
payment: the server answers 402 Payment Required with a price, the client pays it, the
request goes through. No dashboard, no key rotation, no minimum, no monthly bill. If you
never call it, you never pay anything.
Settlement is USDC on Base (eip155:8453).
Running it without a wallet
It starts fine. shop_info answers, tools/list works, and the paid tools tell you what
to set. Look before you fund anything.
What it will not do
- It will not overspend. Every call is filtered through a $0.10 ceiling; a quote above it is dropped and the client refuses to pay rather than guessing.
- It will not charge you for a refusal. Bad arguments are caught locally and never
leave your machine. A
4xxfrom the shop never settles. - It will not lie about a sale. If the settlement header is missing, it says so instead of reporting a payment it cannot prove.
Files are capped at 800 KB. Oversized ones are refused for free, before payment.
Configuration
| variable | meaning |
|---|---|
TRANSCRIBE_MCP_WALLET_KEY | private key of a wallet holding a little USDC on Base. Required only for the paid tools. |
Use a dedicated wallet with a few dollars in it, not your main one. This is true of every tool you hand a private key to, and it is true here.
Tests
npm test
MIT.
Reviews
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