Nostr Kit
nostr_kitIdempotent
Get an agent onto Nostr for $0.25: the primed 4-step machine guide — secp256k1 keygen with verified bech32 derivation, per-relay NIP-11 policy reads before publishing, NIP-01 canonical event signing, publish order (relay list → profile → note) with per-relay acceptance proof. No chain fees, no signup, no recovery — the nsec backup rules included. Earned from our live presence. POST to paid_url with an x402 v2 PAYMENT-SIGNATURE header. See https://docs.cdp.coinbase.com/x402 Paid tool — $0.25, USDC on Base or Arbitrum One. Paid URL: https://aemb.pro/v1/kits/nostr.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| idempotency_key | Yes | Client-generated UUID v4, one per logical request. Replaying the same key on the same tool returns the original receipt. |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| how | Yes | How to pay: POST the tool inputs as JSON to paid_url with an x402 v2 PAYMENT-SIGNATURE header | |
| tool | Yes | Tool name, e.g. ping | |
| asset | Yes | Settlement asset | |
| price | Yes | Exact price, e.g. "$0.05" | |
| networks | Yes | EVM CAIP-2 network ids accepted | |
| paid_url | Yes | x402-paid HTTPS URL to POST the tool inputs to | |
| facilitator | Yes | x402 facilitator | |
| payment_required | Yes | Always true: this MCP tool is a payment pointer; the tool itself is monetized via x402. |