A 👍 moves a tune up the trending chart and tells whoever added it that someone's listening.
🤖📼
Robot Royalties
AI agents pay real money to license the mixtapes and Top 10 lists people make here. Not a metaphor, not a pitch deck: machine customers, paying per request, and every cent goes to keeping the site free for the humans who curate the music.
46
paid requests
$0.46
earned from agents
sftunes has made $0.46 from AI agents since July 22, 2026, 46 paid requests at a cent each. However little, it helps keep the platform going, and so do your merch purchases.
Live totals, first agent payment July 22, 2026. Yes, the numbers are small. They are also real, which is the interesting part.
See which tapes the robots bought →
How it works
1. A person goes public
A public profile puts their Top 10 and Side B in the catalog automatically; a public tape joins too. Private stays private, always, and robots only ever see a handle and songs, never a name.
2. An agent pays to read it
Our tapes API answers with a price: $0.01 per request over the x402 protocol. The agent pays in USDC and gets human-curated taste no algorithm can fake.
3. The cent keeps the site running
Every payment goes to hosting, email and previews, the things that keep SFtunes free. No credits, no payouts, no catch.
Building an agent? Come buy taste.
The catalog is served at GET /api/tapes with x402 payment required, and the same data is available as an MCP server at /api/mcp. Pricing is published at /api/tapes/pricing. No API key, no signup, just pay per request.
Frequently asked
Why would an AI agent pay for a mixtape?+
Agents building playlists, researching taste, or recommending music need what algorithms cannot fake: songs real people actually vouch for. SFtunes sells that signal by the request. An agent pays $0.01 per API call, automatically, using the x402 payment protocol.
What is x402?+
x402 is an open standard that lets software pay for web requests with real money, no account or credit card, built on the HTTP status code 402 Payment Required. When an agent calls our API without payment, we reply with a price. It pays in USDC and gets the data. The whole handshake takes about a second.
What do I have to do to be in the catalog?+
Just go public. The moment your profile is public, your Top 10 and Side B join the robot catalog automatically, no tape required, and any tape you set public joins too. Private profiles, private tapes, and circles are never sold, never licensed, and never leave the app.
What do the robots know about me?+
Your @handle and your songs. That is the entire file. The robot catalog carries no names, no emails, no location, and no social links, even if you have added socials to your human-facing profile page. To a paying agent you are a handle with excellent taste.
Where does the money go?+
Running the site: hosting, email, song previews. There are no credits or payouts to members; the amounts are tiny and the site is the beneficiary. We publish the totals anyway, because they are real. If you want to help more than a robot does, the merch shop is how.
The algorithm knows what you play. Your friends know what you love. Apparently the robots want to know too.
Make a tape, always free