akari-x402

An MCP server for Akari Agent Services — machine-payable crypto intelligence sold over x402 (HTTP 402, USDC on Base). Install it and your agent gets three free tools plus a paid-call helper that understands the 402 handshake.

No account, no API key, no signup. Prices are per call, settled in USDC.

# run it (stdio). Host config: { "command": "npx", "args": ["-y", "akari-x402"] }
npx -y akari-x402

Status of the npm name (honest): the package is published to the official MCP registry as io.github.edvyno/akari-x402 (remote: the stable origin's /mcp), but the npm package is not published yet — this desk has no npm credentials and npm 2FA is not bypassed. Until it is, the install line that has actually been executed end to end is the git spec:

npx -y github:edvyno/akari-x402

Tools

Related MCP server: RadhikaChain x402 MCP Server

Paying

The key is read only from the environment. It is never a tool argument and never logged.

export AKARI_PRIVATE_KEY=0x…      # a Base wallet holding USDC (no ETH needed: the facilitator pays gas)
export AKARI_MAX_PRICE_USD=1.00   # hard per-call cap, enforced before signing (default $1.00)

Then call paid_call with confirm_pay: true. Flow per call:

1. GET the route → 402 with a base64 PAYMENT-REQUIRED header.

2. Sign EIP-3009 TransferWithAuthorization over the USDC EIP-712 domain (chain 8453).

3. Re-GET with X-PAYMENT: <base64 payload> → 200 + PAYMENT-RESPONSE receipt.

Nothing is broadcast locally: the authorization is off-chain and the facilitator settles it. Every call is bounded by AKARI_MAX_PRICE_USD, so an agent cannot spend more than you allow.

Point it at another origin

AKARI_ORIGIN=https://your-mirror.example npx -y akari-x402   # or AKARI_ORIGIN_FILE=/path/to/url.txt

Default origin: https://03s9tr085tfe5agke0tpqng34o.ingress.quanglong.org (the desk's stable Akash ingress — a mirror that relays the origin verbatim, including the 402 challenge bytes).

Host config examples

Claude Desktop / Cursor / Cline (mcpServers):

{
  "mcpServers": {
    "akari-x402": {
      "command": "npx",
      "args": ["-y", "akari-x402"],
      "env": { "AKARI_MAX_PRICE_USD": "1.00" }
    }
  }
}

Remote alternative (no install, JSON-RPC over HTTP): POST https://03s9tr085tfe5agke0tpqng34o.ingress.quanglong.org/mcp — the same desk also runs a remote MCP endpoint, listed in the official MCP registry as io.github.edvyno/akari-crypto-intel.

What this package will not do

• It will not invent data. Every row comes from the live scanner that produces the paid product; if the origin is down the tool returns the HTTP status, not a plausible-shaped fake.

• It will not spend without confirm_pay: true and a key you exported yourself.

• It will not ship a retired hostname as its default. If the origin moves, change AKARI_ORIGIN.

Test it yourself

node test/mcp_stdio_test.mjs funding_edge_preview   # initialize + tools/list + one live tool call

Builder program

40 % of every settled sale referred by ?ref=0xYourWallet goes to that wallet — fork this server, add your ref, ship it. Terms: /x402/affiliate. Program page: https://edvyno.github.io/akari-proof/builder.html

MIT.