x402
x402 agentic payments (Coinbase's HTTP 402 protocol). Custody-free tools to pay x402-protected endpoints (build the EIP-3009 transferWithAuthorization the payer signs, assemble the X-PAYMENT header), call a facilitator (verify/settle/supported), and monetize your own API by generating PaymentRequirements. USDC on Base. Triggers: x402, HTTP 402, pay per request, agentic payment, machine payment, X-PAYMENT, transferWithAuthorization, EIP-3009, facilitator, monetize API, pay for API, agent pays.
Profile →npx skills add internet-court/internet-court-skill --skill x402 --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# x402 Payments skill x402 turns HTTP `402 Payment Required` into a real payment rail for agents: a server replies `402` with what it wants paid; the client signs an off-chain authorization and retries with an `X-PAYMENT` header; a facilitator broadcasts it. Settlement uses EIP-3009 `transferWithAuthorization` (e.g. USDC on Base) — the facilitator can only broadcast the signed authorization, never alter the amount or destination. **Custody-free:** the plugin builds the EIP-712 the payer signs and assembles the header; it never holds a key. ## Tools | Tool | Purpose | |---|---| | `chaingpt_x402_decode` | Decode a 402 body or X-PAYMENT header into human terms (amount/token/recipient/expiry) before paying. | | `chaingpt_x402_build_payment` | Build the UNSIGNED EIP-3009 typed data; pass a signature back to get the final `X-PAYMENT` header. | | `chaingpt_x402_facilitator` | Call a facilitator: `supported` / `verify` / `settle`. | | `chaingpt_x402_create_requirements` | Server side: generate the `PaymentRequirements` + 402 body to monetize your endpoint. | | `chaingpt_x402_fetch` | The whole client loop in one tool: fetch a URL; on 402 it decodes the challenge and (given `from`) emits th
- Tools
- Pay an endpoint (client flow)
- Monetize your endpoint (server flow)
What does the x402 skill do?
x402 agentic payments (Coinbase's HTTP 402 protocol). Custody-free tools to pay x402-protected endpoints (build the EIP-3009 transferWithAuthorization the payer signs, assemble the X-PAYMENT header), call a facilitator (verify/settle/supported), and monetize your own API by generating PaymentRequirements. USDC on Base. Triggers: x402, HTTP 402, pay per request, agentic payment, machine payment, X-PAYMENT, transferWithAuthorization, EIP-3009, facilitator, monetize API, pay for API, agent pays.
How do I install it?
Run `npx skills add internet-court/internet-court-skill --skill x402 --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From internet-court/internet-court-skill, a repository with 1,536 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.