{
  "format": "delx/intent-card/v1",
  "id": "csv-select-columns-api",
  "intent": "CSV Select Columns for an agent workflow",
  "title": "CSV Select Columns API for agents",
  "description": "CSV Select Columns: CSV Select Columns projects selected CSV columns in caller order from bounded caller-supplied values without an external provider. Call CSV Select Columns 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 CSV Select Columns as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, memory-only execution with no paid upstream, live RPC, web search, credentials, custody, signing, media generator, or input retention. Honest limit: Processes bounded caller-supplied data in memory only; it performs no file fetch, database write, code execution, or retention. Advisory output only; the buyer owns authorization, payment policy, and production decisions.",
  "keywords": [
    "CSV Select Columns API",
    "CSV Select Columns for agents",
    "pay per result API",
    "x402 API",
    "no API key"
  ],
  "updated_at": "2026-08-23",
  "canonical_url": "https://commerce.delx.ai/intents/csv-select-columns-api",
  "machine_url": "https://commerce.delx.ai/intents/csv-select-columns-api.json",
  "recommendation": {
    "tool_name": "util_csv_select_columns",
    "service_name": "CSV Select Columns",
    "method": "POST",
    "resource": "https://api.delx.ai/api/v1/x402/csv-select-columns",
    "price_usdc": "0.001",
    "payment_protocols": [
      "x402",
      "mpp"
    ],
    "input_schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "type": "object",
      "properties": {
        "text": {
          "type": "string",
          "maxLength": 8192,
          "description": "Text supplied to CSV Select Columns; used only for this bounded calculation and processed in memory without retention."
        },
        "columns": {
          "type": "array",
          "maxItems": 256,
          "items": {
            "type": "string",
            "maxLength": 8192
          },
          "description": "Columns supplied to CSV Select Columns; used only for this bounded calculation and processed in memory without retention."
        }
      },
      "required": [
        "text",
        "columns"
      ],
      "additionalProperties": false
    },
    "example_input": {
      "text": "id,name,secret\n1,Ada,x",
      "columns": [
        "id",
        "name"
      ]
    },
    "example_output": {
      "schema": "delx/util-csv-select-columns/v1",
      "operation": "data_batch:csv_select_columns",
      "status": "pass",
      "result": {
        "csv": "id,name\n1,Ada",
        "missing_columns": []
      },
      "evidence": {
        "input_sha256": "d19e782e6b173d1489b6e605e278b382ef74b15f275dee76c0dc4c423a5764a3",
        "retained": false,
        "external_calls": 0
      }
    },
    "agentcash": {
      "buy": "npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/csv-select-columns -m POST -H 'x-delx-source: intent-card-csv-select-columns-api' --max-amount 0.001 -b '{\"text\":\"id,name,secret\\n1,Ada,x\",\"columns\":[\"id\",\"name\"]}'",
      "max_amount_usdc": "0.001"
    }
  },
  "attribution": {
    "header": "x-delx-source",
    "value": "intent-card-csv-select-columns-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/csv-select-columns"
  }
}