# Launch timeline · API reference · Femtos

> The whole life of a launch as ordered events with running state. GET /v1/launches/{token}/timeline on Elysium and HyperEVM: parameters, response fields and a live call per layer.

- Base URL: `https://api.femtos.xyz/v1` (REST) · `wss://api.femtos.xyz/v1/ws` (WebSocket) · MCP: `https://api.femtos.xyz/mcp`
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  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/reference/timeline

## Launch timeline — GET `/v1/launches/{token}/timeline`

The whole life of a launch as ordered events with running state.

Layers: Elysium, HyperEVM. Not on HyperCore: served on Elysium and HyperEVM only. No data on Elysium yet: no Ascend launch on Elysium mainnet yet.
Page with live calls: https://femtos.xyz/reference/timeline?layer=<elysium|hyperevm>

| Param | In | Example or values | Meaning |
|---|---|---|---|
| `token` | path | `<token>` (Elysium); `<llToken>` (HyperEVM) | Launched token address |

Elysium:

```bash
curl -H "Authorization: Bearer $FEMTOS_KEY" "https://api.femtos.xyz/v1/launches/<token>/timeline"
```

HyperEVM:

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

| Field | Type | Meaning |
|---|---|---|
| `launch` | object | {t, block, tx, creator, supplySeeded, devBuyTokens, quote, quoteSymbol} |
| `events[]` | object | Chain order (block, log index): {kind, t, block, tx, logIndex, first, creator, supplySeeded, devBuyTokens, side, trader, tokens, …} |
| `events[].holders` | int | Unique holders after the event (Elysium) |
| `events[].top10Share` | number \| null | Top-10 share of supply after the event (Elysium) |
| `events[].mcapUsd` | decimal \| null | swap: market cap in USD (Elysium) |
| `events[].volumeUsd` | decimal | swap: cumulative volume since launch, USD (Elysium) |
| `current` | object | {priceUsd, mcapUsd, holders, top10Share, volume24hUsd, volumeSinceLaunchUsd, trades, traders, devHoldsShare} |
| `graduation` | object | {mirror, core} (Elysium) |
| `truncated` | boolean | More than 5,000 swaps or 20,000 transfers: the replay stops there |
| `holdersFrom` | transfers \| swaps | What the running holders are replayed from: the ERC-20 transfers, or the swaps only (LiquidLaunch: wallet-to-wallet transfers not seen, holder counts approximate) (HyperEVM) |

## Related (Launches)

- [Launches](https://femtos.xyz/reference/launches.md) `GET /v1/launches`: Latest LiquidLaunch bonding-curve launches, newest first. (Elysium, HyperEVM)
- [Launches stream](https://femtos.xyz/reference/ws/launches.md) `WS elysium.launches · hyperevm.launches`: One message per new LiquidLaunch launch, the moment its block is indexed. (Elysium, HyperEVM)
- [Launch detail & signals](https://femtos.xyz/reference/signals.md) `GET /v1/launches/{token}`: Metrics, dev wallet, early buyers and risk signals of one launch. (Elysium, HyperEVM)
- [Launch holders](https://femtos.xyz/reference/launch-holders.md) `GET /v1/launches/{token}/holders`: Every holder of a launched token, tagged dev or early buyer, with concentration. (Elysium, HyperEVM)
- [New tokens](https://femtos.xyz/reference/new-tokens.md) `GET /v1/tokens/new`: Every ERC-20 created on HyperEVM, newest first, with its first pool and market figures. (Elysium, HyperEVM)
- [New tokens stream](https://femtos.xyz/reference/ws/new-tokens.md) `WS elysium.tokens.new · hyperevm.tokens.new`: One message per new token as its block is indexed, and another when its first pool opens. (Elysium, HyperEVM)
- [New pools](https://femtos.xyz/reference/new-pools.md) `GET /v1/pools/new`: Every new pair or pool on HyperEVM, from every discovered factory and PoolManager, newest first. (Elysium, HyperEVM)
- [New pools stream](https://femtos.xyz/reference/ws/new-pools.md) `WS elysium.pools.new · hyperevm.pools.new`: One message per new pool, the moment its block is indexed. (Elysium, HyperEVM)
- [Ascend swaps stream](https://femtos.xyz/reference/ws/ascend-swaps.md) `WS ascend.swaps`: Every swap of every Ascend pool, one message per block. (Elysium)
- [Ascended transitions](https://femtos.xyz/reference/ws/ascend-status.md) `WS ascend.status`: A message when a launch crosses your thresholds, in the block where it happens. (Elysium)
- [Lifecycle stage changes](https://femtos.xyz/reference/ws/ascend-lifecycle.md) `WS ascend.lifecycle`: A message when a launched token reaches its next stage: listing desk, HyperEVM mirror, HyperCore spot, perp. (Elysium)

Every page: https://femtos.xyz/reference.md