{
  "format": "delx/intent-card/v1",
  "id": "email-spf-alignment-check-api",
  "intent": "Email SPF Alignment Check for an agent workflow",
  "title": "Email SPF Alignment Check API for agents",
  "description": "Email SPF Alignment Check: Email SPF Alignment Check checks relaxed or strict SPF domain alignment from bounded caller-supplied values without an external provider. Call Email SPF Alignment Check before deciding relaxed or strict SPF domain alignment from caller-supplied fields. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Email SPF Alignment Check as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, memory-only execution with no paid upstream, live RPC, web search, credentials, custody, signing, media generator, or input retention. Honest limit: Evaluates only caller-supplied metadata; it performs no DNS lookup, HTTP request, web search, credential use, or persistent storage. Advisory output only; the buyer owns authorization, payment policy, and production decisions.",
  "keywords": [
    "Email SPF Alignment Check API",
    "Email SPF Alignment Check for agents",
    "pay per result API",
    "x402 API",
    "no API key"
  ],
  "updated_at": "2026-08-23",
  "canonical_url": "https://commerce.delx.ai/intents/email-spf-alignment-check-api",
  "machine_url": "https://commerce.delx.ai/intents/email-spf-alignment-check-api.json",
  "recommendation": {
    "tool_name": "util_email_spf_alignment_check",
    "service_name": "Email SPF Alignment Check",
    "method": "POST",
    "resource": "https://api.delx.ai/api/v1/x402/email-spf-alignment-check",
    "price_usdc": "0.001",
    "payment_protocols": [
      "x402",
      "mpp"
    ],
    "input_schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "type": "object",
      "properties": {
        "mail_from_domain": {
          "type": "string",
          "maxLength": 8192,
          "description": "Mail From Domain supplied to Email SPF Alignment Check; used only for this bounded calculation and processed in memory without retention."
        },
        "from_domain": {
          "type": "string",
          "maxLength": 8192,
          "description": "From Domain supplied to Email SPF Alignment Check; used only for this bounded calculation and processed in memory without retention."
        },
        "mode": {
          "type": "string",
          "maxLength": 8192,
          "description": "Mode supplied to Email SPF Alignment Check; used only for this bounded calculation and processed in memory without retention."
        }
      },
      "required": [
        "mail_from_domain",
        "from_domain",
        "mode"
      ],
      "additionalProperties": false
    },
    "example_input": {
      "mail_from_domain": "bounce.example.com",
      "from_domain": "example.com",
      "mode": "relaxed"
    },
    "example_output": {
      "schema": "delx/util-email-spf-alignment-check/v1",
      "operation": "web_reliability:email_spf_alignment_check",
      "status": "pass",
      "result": {
        "mode": "relaxed",
        "aligned": true
      },
      "evidence": {
        "input_sha256": "ea586d1c403c2ce4bdabccfde8d16390a6f39bd162622d5aa8ca6b864aa2c9de",
        "retained": false,
        "external_calls": 0
      }
    },
    "agentcash": {
      "buy": "npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/email-spf-alignment-check -m POST -H 'x-delx-source: intent-card-email-spf-alignment-check-api' --max-amount 0.001 -b '{\"mail_from_domain\":\"bounce.example.com\",\"from_domain\":\"example.com\",\"mode\":\"relaxed\"}'",
      "max_amount_usdc": "0.001"
    }
  },
  "attribution": {
    "header": "x-delx-source",
    "value": "intent-card-email-spf-alignment-check-api"
  },
  "evidence": {
    "paid_openapi": "https://api.delx.ai/openapi.x402.json",
    "governed_portfolio": "https://api.delx.ai/x402-portfolio.json",
    "live_contract": "https://api.delx.ai/api/v1/x402/email-spf-alignment-check"
  }
}