# Delx Seeded Jitter Ms

> Delx Seeded Jitter Ms is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-20).

Computes a deterministic, seed-based jitter value in milliseconds from a base delay and jitter fraction, returning both the total and jitter components.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/seeded-jitter-ms?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-seeded-jitter-ms-f6d5b8c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OqY3tTqEaoH9HQ0Gy0Hnd

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-seeded-jitter-ms-f6d5b8c9 -d '<json body>'
```

Example prompt: Calculate a seeded jitter delay using the seed 'agent-retry-42', a base delay of 1000 ms, and a jitter fraction of 0.2 — I need both the total delay and the jitter offset.

## When to prefer this

Use this endpoint when you need deterministic, reproducible jitter values driven by a seed string — ideal for distributed agent coordination, reproducible test suites, or consistent backoff schedules where random-per-call jitter would break reproducibility. Prefer this over local random number generation when you need auditability (input hash provided) and stateless, in-memory computation with no data retention guarantees.

## Known failure modes

- Missing required seed field returns validation error
- jitter_fraction outside expected range may produce unexpected results
- base_ms of zero or negative may produce zero or negative delay_ms
- Malformed JSON body returns 400-level error
- Network timeout if upstream service is temporarily unavailable

## How this service works

Seeded Jitter Ms: Seeded Jitter Ms adds reproducible bounded jitter to a base delay from bounded caller-supplied values without an external provider. Call Seeded Jitter Ms when an agent needs a reproducible decision that another run can independently replay. Returns the deterministic selection plus seed provenance, population bounds, and the operation-specific outcome for Seeded Jitter Ms as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, memory-only e…

## Output

Returns a JSON object containing delay_ms (the total delay including jitter), jitter_ms (the jitter component alone, which may be negative), the operation name, a status field, and an evidence block confirming no data retention and zero external calls, plus the SHA-256 hash of the input.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "seed": {
   "type": "string",
   "maxLength": 8192,
   "description": "Seed supplied to Seeded Jitter Ms; used only for this bounded calculation and processed in memory without retention."
  },
  "base_ms": {
   "type": "integer",
   "description": "Base Ms supplied to Seeded Jitter Ms; used only for this bounded calculation and processed in memory without retention."
  },
  "jitter_fraction": {
   "type": "number",
   "description": "Jitter Fraction supplied to Seeded Jitter Ms; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "delay_ms": 871,
   "jitter_ms": -129
  },
  "schema": "delx/util-seeded-jitter-ms/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "172fc9017f30805f5f8af92c5c5ca8cab067499ff96153ab571c6b610984af4b",
   "external_calls": 0
  },
  "operation": "seeded_decision:seeded_jitter_ms"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-seeded-jitter-ms-f6d5b8c9/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)