# x402 Ecosystem Newcomers & Exits Signal

> x402 Ecosystem Newcomers & Exits Signal is a paid API for AI agents from api.x402node.dev, paid per call via x402, $3/call, status unknown (last checked 2026-09-14).

Returns new vs. exited x402 sellers over a chosen time window with net entity change, indicating whether the x402 ecosystem is growing or shrinking in participants.

## Facts

- Endpoint: GET https://api.x402node.dev/x402/newcomers
- Price: $3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-ecosystem-newcomers-exits-signal-790fe0ca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ww9EmtFJE3z6agfdK_CkS

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 x402-ecosystem-newcomers-exits-signal-790fe0ca
```

Example prompt: Can you pull the x402 newcomers vs exits data for the past 30 days so I can see whether the x402 seller ecosystem is net gaining or losing participants right now?

## When to prefer this

Use this endpoint when you need ecosystem-level participation dynamics for x402 — specifically the net inflow/outflow of sellers — rather than individual seller data or transaction volume. Ideal for investors, researchers, or analysts tracking x402 adoption momentum over discrete time windows using proprietary multi-day snapshots.

## Known failure modes

- Invalid or unsupported time window parameter returns an error
- Requesting a time range that predates available snapshot data returns no results or an error (data cannot be reconstructed retroactively)
- Payment not received or insufficient USDC balance results in 402 Payment Required
- Rate limiting if too many calls made in rapid succession

## How this service works

New vs exited x402 sellers over a chosen window with net entity change - reveals whether the x402 ecosystem is attracting or losing participants, an entry-momentum signal for investors and researchers, from proprietary multi-day snapshots that cannot be reconstructed retroactively. x402 newcomers, x402 new sellers, ecosystem growth, x402 entrants, agent economy momentum, who joined x402

## Output

Returns a breakdown of new x402 sellers who joined vs. those who exited during the specified window, along with a net entity change figure that serves as an entry-momentum signal for ecosystem health assessment.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "days": {
       "type": "string",
       "description": "Compare window in days, default 7, max 12"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-ecosystem-newcomers-exits-signal-790fe0ca/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.x402node.dev](https://www.zero.xyz/host/api.x402node.dev/llms.txt)