{
  "format": "delx/intent-card/v1",
  "id": "json-size-budget-api",
  "intent": "JSON Size Budget for an agent workflow",
  "title": "JSON Size Budget API for agents",
  "description": "JSON Size Budget: JSON Size Budget measures compact UTF-8 JSON size against a byte budget from bounded caller-supplied values without an external provider. Call JSON Size Budget before an agent hands structured data or a batch plan to a downstream tool with a stricter contract. Returns the bounded transformation or validation finding with counts, normalized values, and a versioned result contract for JSON Size Budget as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, memory-only execution with no paid upstream, live RPC, web search, credentials, custody, signing, media generator, or input retention. Honest limit: Processes bounded caller-supplied data in memory only; it performs no file fetch, database write, code execution, or retention. Advisory output only; the buyer owns authorization, payment policy, and production decisions.",
  "keywords": [
    "JSON Size Budget API",
    "JSON Size Budget for agents",
    "pay per result API",
    "x402 API",
    "no API key"
  ],
  "updated_at": "2026-08-23",
  "canonical_url": "https://commerce.delx.ai/intents/json-size-budget-api",
  "machine_url": "https://commerce.delx.ai/intents/json-size-budget-api.json",
  "recommendation": {
    "tool_name": "util_json_size_budget",
    "service_name": "JSON Size Budget",
    "method": "POST",
    "resource": "https://api.delx.ai/api/v1/x402/json-size-budget",
    "price_usdc": "0.001",
    "payment_protocols": [
      "x402",
      "mpp"
    ],
    "input_schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "type": "object",
      "properties": {
        "value": {
          "type": "object",
          "maxProperties": 128,
          "additionalProperties": true,
          "description": "Value supplied to JSON Size Budget; used only for this bounded calculation and processed in memory without retention."
        },
        "maximum_bytes": {
          "type": "integer",
          "description": "Maximum Bytes supplied to JSON Size Budget; used only for this bounded calculation and processed in memory without retention."
        }
      },
      "required": [
        "value",
        "maximum_bytes"
      ],
      "additionalProperties": false
    },
    "example_input": {
      "value": {
        "message": "hello"
      },
      "maximum_bytes": 1024
    },
    "example_output": {
      "schema": "delx/util-json-size-budget/v1",
      "operation": "data_batch:json_size_budget",
      "status": "pass",
      "result": {
        "bytes": 19,
        "within_budget": true
      },
      "evidence": {
        "input_sha256": "293a834474416653f334e4892f6eb0f0f2c98b11baddda224806b004dd8fbfba",
        "retained": false,
        "external_calls": 0
      }
    },
    "agentcash": {
      "buy": "npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/json-size-budget -m POST -H 'x-delx-source: intent-card-json-size-budget-api' --max-amount 0.001 -b '{\"value\":{\"message\":\"hello\"},\"maximum_bytes\":1024}'",
      "max_amount_usdc": "0.001"
    }
  },
  "attribution": {
    "header": "x-delx-source",
    "value": "intent-card-json-size-budget-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/json-size-budget"
  }
}