{
  "format": "delx/intent-card/v1",
  "id": "digest-header-verify-api",
  "intent": "Digest Header Verify for an agent workflow",
  "title": "Digest Header Verify API for agents",
  "description": "Digest Header Verify: Digest Header Verify verifies a sha-256 Digest value against caller-supplied text bytes from bounded caller-supplied values without an external provider. Call Digest Header Verify before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Digest Header Verify as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, memory-only execution with no paid upstream, live RPC, web search, credentials, custody, signing, media generator, or input retention. Honest limit: Evaluates only caller-supplied metadata; it performs no DNS lookup, HTTP request, web search, credential use, or persistent storage. Advisory output only; the buyer owns authorization, payment policy, and production decisions.",
  "keywords": [
    "Digest Header Verify API",
    "Digest Header Verify for agents",
    "pay per result API",
    "x402 API",
    "no API key"
  ],
  "updated_at": "2026-08-23",
  "canonical_url": "https://commerce.delx.ai/intents/digest-header-verify-api",
  "machine_url": "https://commerce.delx.ai/intents/digest-header-verify-api.json",
  "recommendation": {
    "tool_name": "util_digest_header_verify",
    "service_name": "Digest Header Verify",
    "method": "POST",
    "resource": "https://api.delx.ai/api/v1/x402/digest-header-verify",
    "price_usdc": "0.001",
    "payment_protocols": [
      "x402",
      "mpp"
    ],
    "input_schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "type": "object",
      "properties": {
        "algorithm": {
          "type": "string",
          "maxLength": 8192,
          "description": "Algorithm supplied to Digest Header Verify; used only for this bounded calculation and processed in memory without retention."
        },
        "digest_base64": {
          "type": "string",
          "maxLength": 8192,
          "description": "Digest Base64 supplied to Digest Header Verify; used only for this bounded calculation and processed in memory without retention."
        },
        "text": {
          "type": "string",
          "maxLength": 8192,
          "description": "Text supplied to Digest Header Verify; used only for this bounded calculation and processed in memory without retention."
        }
      },
      "required": [
        "algorithm",
        "digest_base64",
        "text"
      ],
      "additionalProperties": false
    },
    "example_input": {
      "algorithm": "sha-256",
      "digest_base64": "ungWv48Bz+pBQUDeXa4iI7ADYaOWF3qctBD/YfIAFa0=",
      "text": "abc"
    },
    "example_output": {
      "schema": "delx/util-digest-header-verify/v1",
      "operation": "web_reliability:digest_header_verify",
      "status": "pass",
      "result": {
        "algorithm": "sha-256",
        "matched": true,
        "actual_base64": "ungWv48Bz+pBQUDeXa4iI7ADYaOWF3qctBD/YfIAFa0="
      },
      "evidence": {
        "input_sha256": "e2887c004f75ecae89be72af3d1ed97e6058d581b75c207eebceba1ccc080397",
        "retained": false,
        "external_calls": 0
      }
    },
    "agentcash": {
      "buy": "npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/digest-header-verify -m POST -H 'x-delx-source: intent-card-digest-header-verify-api' --max-amount 0.001 -b '{\"algorithm\":\"sha-256\",\"digest_base64\":\"ungWv48Bz+pBQUDeXa4iI7ADYaOWF3qctBD/YfIAFa0=\",\"text\":\"abc\"}'",
      "max_amount_usdc": "0.001"
    }
  },
  "attribution": {
    "header": "x-delx-source",
    "value": "intent-card-digest-header-verify-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/digest-header-verify"
  }
}