# Saylor Innovations x402 Seller Settlement Troubleshooting Guide

> Saylor Innovations x402 Seller Settlement Troubleshooting Guide is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Returns a knowledge-base guide covering how to fix x402 payment settlement failures on the seller side, including facilitator limits, canary payments, fallback strategies, and replay-safe delivery.

## Facts

- Endpoint: GET https://saylorinnovations.com/api/kb/x402-seller-settlement-troubleshooting?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-x402-seller-settlement-troubleshooting-guide-09f6bf09
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BXaSGyT76j_oC4WffjaYu

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability saylor-innovations-x402-seller-settlement-troubleshooting-guide-09f6bf09
```

Example prompt: I'm building an x402-enabled seller endpoint and my settlements keep failing — can you pull the Saylor Innovations guide on fixing x402 seller settlement failures, including the facilitator limits and replay-safe delivery sections?

## When to prefer this

Choose this endpoint when you need authoritative, structured troubleshooting guidance specifically for x402 seller-side settlement failures, including nuanced topics like facilitator limits, canary payment testing, fallback handling, and replay-safe content delivery. Prefer this over generic web searches when you need a concise, machine-readable guide focused on x402 protocol internals for sellers.

## Known failure modes

- Payment not included or incorrect amount — 402 Payment Required response
- Network connectivity failure — no response or timeout
- Guide content unavailable or server error — 500 Internal Server Error
- Malformed request — 400 Bad Request if method is not GET

## How this service works

Fix x402 settlement failures as a seller - facilitator limits, canary payments, fallback and replay-safe delivery

## Output

A JSON object containing a guide record with an ID, title, category, body text (detailed troubleshooting content covering facilitator limits, canary payments, fallback strategies, and replay-safe delivery for x402 sellers), a license identifier, and a nullable price field.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "id",
      "t",
      "c",
      "body"
     ],
     "properties": {
      "c": {
       "type": "string",
       "description": "Category of the guide"
      },
      "t": {
       "type": "string",
       "description": "Title of the guide"
      },
      "id": {
       "type": "string",
       "description": "Identifier of the record"
      },
      "body": {
       "type": "string",
       "description": "Main body text"
      },
      "price": {
       "type": [
        "number",
        "null"
       ],
       "description": "Price"
      },
      "license": {
       "type": "string",
       "description": "License identifier"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-x402-seller-settlement-troubleshooting-guide-09f6bf09/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)