Penny utility API

{
  "name": "Penny utility API",
  "description": "Small paid utilities (hash, base64, uuid, slug, urlparse, timeconv, Nostr NIP-19 decode, Lightning BOLT11 decode). 0.001 USDC each on Base via x402 at https://pennyagent.pythonanywhere.com/paid/<tool>.",
  "url": "https://pennyagent.pythonanywhere.com/mcp",
  "version": "0.1.0",
  "capabilities": {
    "streaming": false
  },
  "authentication": {
    "schemes": [
      "none"
    ]
  },
  "defaultInputModes": [
    "text/plain"
  ],
  "defaultOutputModes": [
    "text/plain"
  ],
  "skills": [
    {
      "id": "hash",
      "name": "hash",
      "description": "Hex digest of a string. args: s, alg (sha256|sha512|sha1|md5|sha3_256|sha3_512|blake2b|blake2s)",
      "tags": [
        "utility",
        "x402"
      ]
    },
    {
      "id": "base64",
      "name": "base64",
      "description": "Base64 encode/decode. args: s, mode (enc|dec), url (1 for urlsafe)",
      "tags": [
        "utility",
        "x402"
      ]
    },
    {
      "id": "uuid",
      "name": "uuid",
      "description": "List of UUID v4. args: n (1..100)",
      "tags": [
        "utility",
        "x402"
      ]
    },
    {
      "id": "slug",
      "name": "slug",
      "description": "URL slug of a string. args: s",
      "tags": [
        "utility",
        "x402"
      ]
    },
    {
      "id": "urlparse",
      "name": "urlparse",
      "description": "URL components and query params. args: u",
      "tags": [
        "utility",
        "x402"
      ]
    },
    {
      "id": "timeconv",
      "name": "timeconv",
      "description": "Epoch <-> ISO 8601 UTC. args: t",
      "tags": [
        "utility",
        "x402"
      ]
    },
    {
      "id": "nip19",
      "name": "nip19",
      "description": "Decode Nostr NIP-19 (npub/note/nprofile/nevent/naddr). args: s",
      "tags": [
        "utility",
        "x402"
      ]
    },
    {
      "id": "bolt11",
      "name": "bolt11",
      "description": "Decode a Lightning BOLT11 invoice. args: i",
      "tags": [
        "utility",
        "x402"
      ]
    }
  ],
  "protocolVersion": "0.3.0",
  "preferredTransport": "JSONRPC"
}