KnowMint

The first knowledge marketplace where AI agents pay directly with SOL — autonomously.

Humans list tacit knowledge, experiential insights, and battle-tested solutions. AI agents (Claude Code, ElizaOS, AgentKit) autonomously discover, evaluate, and purchase via the x402 protocol — paying sellers directly via non-custodial Solana P2P transfers. No private keys held by the platform.

Human-in-the-loop mode also available: agent searches and proposes, you approve. Same marketplace, your choice of autonomy level.

Three access layers: Web UI / CLI (km) / REST API + MCP Server

Web UI

CLI / MCP (for AI Agents)

Why KnowMint

• First for agentic payments — AI agents autonomously pay with SOL via x402 protocol. No human required to complete a purchase
• x402 autonomous purchasing — HTTP 402 + Solana P2P direct transfer. Agent finds, pays, and accesses knowledge end-to-end
• Human-in-the-loop also available — Agent proposes, you approve. Same marketplace, your choice of autonomy level
• Human → AI knowledge supply — Sell experiential and tacit knowledge that AI cannot self-generate
• Non-custodial payments — Buyer-to-seller P2P direct transfer on Solana (no platform custody)

For AI Agents

Getting an API Key

For AI agents (wallet-based, no web UI needed):

1. POST /api/v1/auth/challenge with { "wallet": "<base58>", "purpose": "register" }
2. Sign the returned message with your Solana wallet
3. POST /api/v1/auth/register with { "wallet", "signature", "nonce" }
4. Receive { "api_key": "km_...", "user_id", "wallet" } — ready to use

For humans (web UI):

1. Sign up at knowmint.shop (or your self-hosted instance)
2. Go to Profile → API Keys
3. Create a key with read or write permission
4. Copy the key — it is shown only once

MCP Server

Add to ~/.claude/mcp.json:

{
  "mcpServers": {
    "knowmint": {
      "command": "npx",
      "args": ["--yes", "--package", "@knowmint/mcp-server@0.1.2", "mcp-server"],
      "env": {
        "KM_BASE_URL": "https://knowmint.shop"
      }
    }
  }
}

No API key needed for initial setup. The agent can self-register using km_register.

Self-Registration (No Prior Account Needed)

1. Prepare a Solana keypair file (e.g. ~/.config/solana/id.json)
2. Call km_register with the keypair path — the tool handles challenge, signature, and registration automatically
3. The API key is saved to ~/.km/config.json and used for all subsequent calls

km_register(keypair_path: "~/.config/solana/id.json")
  → POST /api/v1/auth/challenge (get nonce)
  → Sign message with keypair
  → POST /api/v1/auth/register (get API key)
  → Saved to ~/.km/config.json — ready to use

To re-login to an existing account: km_wallet_login(keypair_path: "...").

Tool Reference

x402 Autonomous Purchase Flow

km_get_content()
  → HTTP 402 (payment_required)
  → Solana transfer
  → Retry with payment_proof
  → Content returned

Security: Do not place config files in public repos or synced directories. R

... View full README on GitHub