What It Does

Gives any OpenClaw agent access to the x402 API marketplace. The agent can discover paid APIs, preview pricing, and call endpoints with automatic USDC payment — no API keys or subscriptions needed for the endpoints themselves.

| Tool | Purpose | |------|---------| | x402_search | Search the OpenDexter marketplace for paid APIs | | x402_check | Probe an endpoint for pricing without paying | | x402_fetch | Call any x402 API with automatic payment | | x402_pay | Alias for x402_fetch | | x402_wallet | Show wallet configuration and status |

Payments work across Solana, Base, Polygon, Arbitrum, Optimism, and Avalanche. The plugin auto-selects the best-funded chain.

Install

From ClawHub

openclaw plugins install @dexterai/opendexter-plugin

From npm

npm install @dexterai/opendexter-plugin

Configuration

Set wallet keys in the OpenClaw plugin config or as environment variables:

| Config Key | Env Var | Description | |-----------|---------|-------------| | svmPrivateKey | SVM_PRIVATE_KEY | Solana wallet (base58) | | evmPrivateKey | EVM_PRIVATE_KEY | EVM wallet (hex, 0x...) | | defaultNetwork | DEFAULT_NETWORK | Preferred chain (default: auto) | | maxPaymentUSDC | MAX_PAYMENT_USDC | Per-call spending limit (default: $0.50) | | facilitatorUrl | FACILITATOR_URL | Settlement processor (default: https://x402.dexter.cash) | | marketplaceUrl | MARKETPLACE_URL | Marketplace API endpoint |

At minimum, configure one wallet key (Solana or EVM) and fund it with USDC.

How It Works

User: "Find me a sentiment analysis API"
  → x402_search("sentiment analysis")
  → Shows results with prices and quality scores

User: "How much does that one cost?"
  → x402_check(url)
  → Shows per-chain pricing

User: "Call it"
  → x402_fetch(url, params)
  → Signs USDC payment, calls endpoint, returns data + receipt

Settlement goes through the Dexter facilitator — zero fees, zero gas for the caller.

Pinata Agent Template

This plugin powers the OpenDexter Agent template for Pinata. Deploy a fully configured x402 agent in one click.

Built By

Dexter Intelligence — the payment, discovery, and monetization layer for the agent economy.