# PulseFeed Momentum

> PulseFeed Momentum is a paid API for AI agents from pulsefeed.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns momentum data for an ERC-20 token on Base — comparing activity and volume between the current and previous block windows with a % delta and a heating/cooling/flat trend label.

## Facts

- Endpoint: POST https://pulsefeed.dev/momentum
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pulsefeed-momentum-ab9c93ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qEhOGZwnr3-pzPrJ3Yi-j

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 pulsefeed-momentum-ab9c93ad -d '<json body>'
```

Example prompt: Is 0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed heating up or cooling down right now? Show me the momentum trend on Base — activity and volume change compared to the previous block window.

## When to prefer this

Choose this endpoint when you need a simple, directional momentum signal for a Base ERC-20 token — specifically the heating/cooling/flat classification with a % delta — rather than raw transfer lists, whale movement, or smart-money flow. It is ideal for filtering tokens by momentum before acting, building alert thresholds, or surfacing trend direction without parsing raw blockchain data.

## Known failure modes

- Invalid or non-ERC-20 token address returns an error or empty result
- Token with no recent activity may return zeroes with a flat trend
- Base RPC node lag may cause stale block window data
- Missing ?token= parameter returns a 400 or descriptive error
- Very new tokens with no prior block window history may lack a valid delta

## How this service works

Is this token heating up or cooling down? Momentum on Base: current block window versus the previous one — activity and volume with a % delta and a heating/cooling/flat trend. ?token=0x...

## Output

Returns the token's transfer activity count and volume for the current block window versus the prior block window, a percent delta between the two, and a categorical trend label — heating, cooling, or flat — indicating whether on-chain momentum is increasing, decreasing, or stable.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pulsefeed-momentum-ab9c93ad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pulsefeed.dev](https://www.zero.xyz/host/pulsefeed.dev/llms.txt)