---
title: "Run an x402 seller preflight"
method: POST
path: "/v1/intel/preflight"
tags: ["Free Preflight Screening"]
---

# Run an x402 seller preflight

`POST /v1/intel/preflight`

## Request

- Base URL: `https://intel.twzrd.xyz`
- URL: `https://intel.twzrd.xyz/v1/intel/preflight`
- Auth: none required

Free check before paying an x402 resource: preflight ReadinessCard with can_spend / trust_score / proof / caveats / decision for the seller you are about to pay. Down-only signal: it flags risky counterparties, it does not vouch for good ones. The one-command demo. Free, no payment, no auth.

## Request body

- object: Resource an agent is about to pay, plus its intent.
  - `resource_name` string: Human name of the x402 resource.
  - `resource_url` string: URL of the x402 resource.
  - `seller_wallet` string: Seller (payTo) wallet, base58.
  - `buyer_wallet` string: The paying agent's wallet, base58.
  - `price_usdc` number: Quoted price in USDC.
  - `agent_intent` string: What the agent wants to do (e.g. swap_quote).
  - `marketplace_score` integer: Optional self-reported marketplace quality 0-100.

## Response `200`

OK (JSON).

## Changes

- **2026-09-01** `e233ad9a9406`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/twzrd/apis/twzrd-agent-reputation-rails/changes/v1/intel/preflight/post.md)

---

[API](https://skmtc.dev/twzrd/apis/twzrd-agent-reputation-rails.md) - [All operations](https://skmtc.dev/twzrd/apis/twzrd-agent-reputation-rails/llms.txt) - [OpenAPI document](https://skmtc.dev/twzrd/apis/twzrd-agent-reputation-rails/revisions/beddd4662a76?raw)