# Delx EVM Batch Value Sum

> Delx EVM Batch Value Sum is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Sums an array of EVM transaction values (in wei) and returns the total wei and transaction count in a single bounded computation.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/evm-batch-value-sum
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-evm-batch-value-sum-79b667d5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_e11zd41oFmc7osufW95ad

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability delx-evm-batch-value-sum-79b667d5 -d '<json body>'
```

Example prompt: Can you sum up these EVM transaction values in wei for me — 200, 150, and 250 — and tell me the total wei and how many transactions that covers?

## When to prefer this

Choose this endpoint when you need a fast, auditable, in-memory summation of EVM wei values with no external calls or data retention, especially for preflight checks before submitting batch on-chain transactions. Prefer it over doing client-side arithmetic when you need a tamper-evident SHA-256 evidence receipt of the input. It is bounded to 256 items and pure computation with no side effects.

## Known failure modes

- Array exceeds 256 items limit — request rejected
- Individual value string exceeds 8192 characters — rejected
- Non-numeric or malformed wei string in array — computation error
- Empty array — may return zero total
- Network timeout or service unavailability — HTTP 5xx

## How this service works

EVM Batch Value Sum: EVM Batch Value Sum sums bounded raw transaction values for a batch funding view from bounded caller-supplied values without an external provider. Call EVM Batch Value Sum before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for EVM Batch Value Sum as versioned deterministic JSON. Price: $0.001 USDC via x40…

## Output

Returns a JSON object with the summed total in wei as a string, the count of input transactions, the operation name, a pass/fail status, and an evidence block confirming no data retention and no external calls, plus the SHA-256 hash of the input for auditability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "values_wei": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 8192
   },
   "maxItems": 256,
   "description": "Values Wei supplied to EVM Batch Value Sum; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "total_wei": "600",
   "transaction_count": 3
  },
  "schema": "delx/util-evm-batch-value-sum/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "fcf938cef1b6f0dd254b891555c2975596fbdec45a46507b6b38042c55723893",
   "external_calls": 0
  },
  "operation": "evm_preflight:evm_batch_value_sum"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-evm-batch-value-sum-79b667d5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)