# Delx Base Confirmation ETA

> Delx Base Confirmation ETA 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).

Calculates the estimated time remaining (in seconds) for a Base blockchain transaction to reach a required number of confirmations.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/base-confirmation-eta
- 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-base-confirmation-eta-9b4098b8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XPWw-GGRf173eTqgTQaZq

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-base-confirmation-eta-9b4098b8 -d '<json body>'
```

Example prompt: My Base transaction currently has 3 confirmations and I need 12 total — assuming 2-second block times, how many seconds until it's fully confirmed?

## When to prefer this

Use this endpoint when your agent needs a lightweight, stateless, in-memory calculation of Base blockchain confirmation ETA without exposing your own RPC node logic. Ideal for EVM preflight checks before triggering dependent workflow steps, releasing payments, or gating actions on transaction finality. Prefer this over rolling your own calculation when you need auditability (input hash, no-retention evidence) and a simple API call.

## Known failure modes

- Missing required fields (current_confirmations, required_confirmations) returns validation error
- current_confirmations >= required_confirmations may return 0 ETA or edge-case result
- Non-numeric or negative values for assumed_block_seconds may cause computation errors
- Network or service unavailability returns HTTP 5xx

## How this service works

Base Confirmation Eta: Base Confirmation Eta estimates remaining confirmation time from caller-supplied block cadence from bounded caller-supplied values without an external provider. Call Base Confirmation Eta 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 Base Confirmation Eta as versioned deterministic JSON. Price:…

## Output

Returns a JSON object with eta_seconds (estimated seconds until required confirmations are reached) and remaining_confirmations (how many more confirmations are needed), along with audit metadata including whether any data was retained (always false) and a hash of the input for traceability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "assumed_block_seconds": {
   "type": "number",
   "description": "Assumed Block Seconds supplied to Base Confirmation Eta; used only for this bounded calculation and processed in memory without retention."
  },
  "current_confirmations": {
   "type": "integer",
   "description": "Current Confirmations supplied to Base Confirmation Eta; used only for this bounded calculation and processed in memory without retention."
  },
  "required_confirmations": {
   "type": "integer",
   "description": "Required Confirmations supplied to Base Confirmation Eta; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "eta_seconds": 18,
   "remaining_confirmations": 9
  },
  "schema": "delx/util-base-confirmation-eta/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "615e119ae31d30600ee25cf4322022dd7d553893849e6ca9227543622f2d108b",
   "external_calls": 0
  },
  "operation": "evm_preflight:base_confirmation_eta"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-base-confirmation-eta-9b4098b8/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)