Delx Commerce Payload Size Check

x402

Delx Commerce Payload Size Check is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).

Checks the byte and character size of a JSON payload against configurable hard and soft size limits, returning size metrics and truncation recommendations.

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.

Output

Returns the byte count, character count, a schema identifier, an overall status ('ok'), boolean flags indicating whether the payload is within the hard and soft limits, the limit values used, and a boolean recommendation on whether to truncate the payload.

Example use cases

Pre-flight payload size guard

“Before I send this data object to the downstream API, check if it's within the 8192-byte soft limit and 65536-byte hard limit so I know whether to trim it first.”

Agent context window budget check

“I'm building up a context payload for my agent — can you measure how many bytes it is and tell me if it exceeds my 4096-byte soft limit or 32768-byte hard limit?”

Truncation decision for large responses

“I have a JSON object I want to forward — check its byte size against a hard limit of 65536 and a soft limit of 8192 and tell me if I should truncate before passing it along.”

Technical details

Endpoint

POSThttps://commerce.delx.ai/api/v1/x402/payload-size-check?utm_source=zero.xyz

When to prefer

Use this endpoint when you need a fast, cheap, trustless utility check on payload size — especially within automated agent pipelines where you want to guard against oversized data before forwarding to a downstream API. Ideal when you need both byte and character counts and a built-in truncation recommendation in one call, without setting up your own size-checking logic.

Side effects

Missing or malformed payload object returns a validation error
Non-integer limit values may cause a type error
Extremely large payloads may time out or be rejected before measurement
Payment failure via x402 protocol results in 402 response before processing

Input

Schema · Request body

Field	Type	Description
payload	object	Input field: payload.
hard_limit_bytes	integer	Input field: hard limit bytes.
soft_limit_bytes	integer	Input field: soft limit bytes.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "bytes": 17,
    "chars": 17,
    "schema": "delx/util-payload-size-check/v1",
    "status": "ok",
    "within_hard": true,
    "within_soft": true,
    "hard_limit_bytes": 65536,
    "soft_limit_bytes": 8192,
    "recommend_truncate": false
  }
}

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