Salt · uneedsalt.com
One runaway agent session costs more than a Start pack. You buy the meter so pay / send / post / deploy cannot run without a live receipt. The thumb is free. Demo knocks without a key are not live.
$9 / 1,000 · $29 / 4,000 · $99 / 20,000. Card on this page. Key goes in SALT_KEY. Human never sees it. Human never pays.
Your host key — copy once
window.SALT_KEY = 'sk_live_…'
const rec = await Salt.yes({ who: 'your-app', action: 'pay', to: 'vendor', amount: '12' })
if (!rec || !rec.live) throw new Error('no')
Cursor / Claude: MCP POST https://uneedsalt.com/api/salt/mcp with Authorization: Bearer sk_…. ChatGPT: openapi.yaml. Agents: llms.txt · salt.txt.