# Speer Cyber Defense Email Authentication Analysis

> Speer Cyber Defense Email Authentication Analysis is a paid API for AI agents from api.speercyberdefense.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Analyzes email authentication records (SPF, DKIM, DMARC) for a given domain and returns a security assessment summary

## Facts

- Endpoint: GET https://api.speercyberdefense.com/v1/security/email-auth
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/speer-cyber-defense-email-authentication-analysis-d9285b7a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JNc7Tb3UIsFayNQL70a-X

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 speer-cyber-defense-email-authentication-analysis-d9285b7a
```

Example prompt: Can you check the email authentication setup for example.com — I want to know if they have SPF, DKIM, and DMARC properly configured and whether they're protected against spoofing?

## When to prefer this

Choose this endpoint when you need a quick, pay-per-call assessment of a domain's email authentication configuration (SPF, DKIM, DMARC) without committing to a subscription. It is ideal for AI agents that need on-demand cybersecurity data with micropayment billing in USDC, especially when failed analyses are not charged (HTTP 503 = no bill).

## Known failure modes

- HTTP 503 returned if the security analysis fails (not billed)
- Missing or invalid domain query parameter returns an error
- Domain does not exist or has no DNS records may produce empty findings
- Rate limiting or payment failure may block the request

## How this service works

Cybersecurity micropayments API for AI agents — pay-per-call USDC on Base and Solana (x402 v2). Free utility services under /v1/free/* and gateway select under /v1/gateway/* (Public). Paid cybersecurity analysis, CVE/security news feeds, Base blockchain intelligence, network intel utilities, composite domain/URL reports, research, conversion, verification, and feeds. Failed security analyses are not billed (HTTP 503).

## Output

Returns a JSON object with a boolean ok field, the tool name used, a status string, and a human-readable summary describing the email authentication posture of the queried domain, including findings about SPF, DKIM, and DMARC records.

## 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"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "example": "example.com"
      }
     },
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "tool": {
       "type": "string"
      },
      "status": {
       "type": "string"
      },
      "summary": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tool": "resource",
  "status": "ok",
  "summary": "Completed"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/speer-cyber-defense-email-authentication-analysis-d9285b7a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.speercyberdefense.com](https://www.zero.xyz/host/api.speercyberdefense.com/llms.txt)