# Saylor Innovations OAuth & API Authentication Guide

> Saylor Innovations OAuth & API Authentication Guide is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-30).

Returns a knowledge-base article explaining OAuth flows and API authentication methods for web and domain contexts

## Facts

- Endpoint: GET https://saylorinnovations.com/api/kb/oauth-api-auth?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-oauth-api-authentication-guide-da56aef2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1rmIl1onWUAOfzEhaNW_v

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-oauth-api-authentication-guide-da56aef2
```

Example prompt: Can you pull up the OAuth and API authentication guide from Saylor Innovations so I can understand how to implement secure auth flows for my web app?

## When to prefer this

Choose this endpoint when an agent or developer needs a concise, pre-written reference guide on OAuth and API authentication concepts without having to scrape documentation sites. It is especially useful when building authentication flows for web apps and needing a quick structured explanation returned as JSON. Prefer this over general web search when a structured, reliably-formatted knowledge article is needed at low cost.

## Known failure modes

- Missing required 'type' or 'method' fields returns a validation error
- Invalid HTTP method enum value causes a 400-level error
- Service unavailability returns a timeout or 5xx error
- Payment failure (x402) prevents article retrieval

## How this service works

OAuth and API Authentication Resolver. A reproducible OAuth flow in which redirect, state/PKCE, issuer, audience, scopes, token lifetime, refresh, tenant, and API environment agree, with secrets protected and negative tests proving denial.

## Output

Returns a JSON object containing an article ID, timestamp, category code, and a body field with the full text of the OAuth and API authentication knowledge-base article covering topics like OAuth flows, token types, API key authentication, and web domain auth patterns.

## 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",
      "POST",
      "PUT",
      "PATCH",
      "DELETE",
      "HEAD"
     ],
     "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"
      },
      "t": {
       "type": "string"
      },
      "id": {
       "type": "string"
      },
      "body": {
       "type": "string"
      },
      "price": {
       "type": [
        "number",
        "null"
       ]
      },
      "license": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-oauth-api-authentication-guide-da56aef2/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)