# Launch detail & signals · HyperEVM API · Femtos

> Metrics, dev wallet, early buyers and risk signals of one launch.

- Base URL: `https://api.femtos.xyz/v1` (REST) · `wss://api.femtos.xyz/v1/ws` (WebSocket) · MCP: `https://api.femtos.xyz/mcp`
- Auth: `Authorization: Bearer $FEMTOS_KEY` (or `X-API-KEY: $FEMTOS_KEY`). Free key: https://femtos.xyz/accounts/ (browser), or with
  no browser: `GET https://femtos.xyz/accounts/agent/challenge`, solve its proof of work, then `POST https://femtos.xyz/accounts/agent/signup`
  (https://femtos.xyz/agents.md#agent-onboarding)
- Decimals are exact strings, times Unix milliseconds, addresses lowercase `0x`
- Whole API in one file: https://femtos.xyz/agents.md · OpenAPI: https://api.femtos.xyz/v1/openapi.json · Index: https://femtos.xyz/llms.txt
- Page with live calls: https://femtos.xyz/hyperevm/signals

## Launch detail & signals — GET `/v1/launches/{token}`

Metrics, dev wallet, early buyers and risk signals of one launch.

| Param | In | Example or values |
|---|---|---|
| `token` | path | `<llToken>` |
| `earlyWindowSec` | query | `60` |

```bash
curl -H "Authorization: Bearer $FEMTOS_KEY" "https://api.femtos.xyz/v1/launches/<llToken>?earlyWindowSec=60"
```

| Field | Type | Meaning |
|---|---|---|
| `launch` | LaunchRow | with bondedAt, bondingProgress |
| `metrics · dev · holders` | object | as on Elysium |
| `signals[]` | object | {rule, severity, addresses, detail}, high first |

## Related (Launches)

- [LiquidLaunch launches](https://femtos.xyz/hyperevm/launches.md): Latest LiquidLaunch bonding-curve launches, newest first.
- [Launches stream](https://femtos.xyz/hyperevm/ws-launches.md): One message per new LiquidLaunch launch, the moment its block is indexed.
- [Launch timeline](https://femtos.xyz/hyperevm/timeline.md): The whole life of a launch as ordered events with running state.

All HyperEVM endpoints: https://femtos.xyz/hyperevm.md