# Stateful 5-Minute DeFi, DEX & Polymarket Alpha Delta Stream

> Stateful 5-Minute DeFi, DEX & Polymarket Alpha Delta Stream is a paid API for AI agents from hn-pulse.agentdiet.dev, paid per call via MPP, $0.03/call, status unknown (last checked 2026-10-21).

Returns a stateful 5-minute delta feed for a target token, computing real-time shifts in DEX buy/sell ratio, DeFiLlama APY spreads, and Polymarket prediction market odds.

## Facts

- Endpoint: GET https://hn-pulse.agentdiet.dev/v1/narrative-tracker?utm_source=zero.xyz
- Price: $0.03/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: hn-pulse.agentdiet.dev
- Website: https://hn-pulse.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/hn-pulse-agentdiet-dev-stateful-5-minute-defi-dex-polymarket-alpha-5c171e47
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mjPCOf2dOS9sqCKb9YQE8

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 hn-pulse-agentdiet-dev-stateful-5-minute-defi-dex-polymarket-alpha-5c171e47
```

Example prompt: Pull the latest 5-minute delta stream for ETH — I want to see how the DEX buy/sell ratio, DeFiLlama APY spreads, and Polymarket odds have shifted so I can spot any emerging alpha.

## When to prefer this

Choose this endpoint when you need stateful, incremental delta signals (not raw snapshots) for a specific token across DEX orderflow, DeFi yield spreads, and prediction market odds simultaneously — particularly for autonomous trading bots that need a compact, pre-computed 5-minute momentum signal rather than assembling separate feeds from DeFiLlama, a DEX aggregator, and Polymarket individually.

## Known failure modes

- Missing or empty 'target' parameter returns a 400 validation error
- Unknown or unsupported token symbol may return empty deltas or a not-found error
- Payment not completed (HTTP 402) if x402 micropayment is not fulfilled
- Stale or unavailable upstream data from DeFiLlama or Polymarket may result in partial or null delta fields
- Rate limiting or SLA breach may return 429 or 503 responses

## How this service works

Stateful 5-minute delta feed for autonomous trading bots: computes real-time shifts in DEX buy/sell ratio, DeFiLlama APY spreads, and Polymarket odds. (Live x402 v2, IETF MPP & MCP endpoint at https://hn-pulse.agentdiet.dev/v1/narrative-tracker)

## Output

Returns a structured object containing stateful 5-minute delta metrics for the requested token, including DEX buy/sell ratio shifts, DeFiLlama APY spread changes, and Polymarket odds movements computed against the prior 5-minute window.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "target"
 ],
 "properties": {
  "target": {
   "type": "string",
   "minLength": 1,
   "description": "Primary token symbol or asset (e.g. AERO, ETH, SOL) to track stateful 5-minute orderflow and yield deltas"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hn-pulse-agentdiet-dev-stateful-5-minute-defi-dex-polymarket-alpha-5c171e47/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from hn-pulse.agentdiet.dev](https://www.zero.xyz/host/hn-pulse.agentdiet.dev/llms.txt)