# Holders history | API reference | Femtos

> Holder count of an ERC-20 per day, and now. GET /v1/holders/history 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/holders-history

## Holders history — GET `/v1/holders/history`

Holder count of an ERC-20 per day, and now.

Layers: Elysium, HyperEVM. Not on HyperCore: HyperCore holders are snapshots of its ledger: the holders page counts them now.
Page with live calls: https://femtos.xyz/reference/holders-history?layer=<elysium|hyperevm>

| Param | In | Example or values | Meaning |
|---|---|---|---|
| `layer` | query | `elysium` (Elysium); `hyperevm` (HyperEVM) | EVM layer |
| `token` | query | `<token>` (Elysium); `<evmToken>` (HyperEVM) | Token address |
| `days` | query | `30` | UTC days, today included |

Elysium:

```bash
curl -H "Authorization: Bearer $FEMTOS_KEY" "https://api.femtos.xyz/v1/holders/history?layer=elysium&token=<token>&days=30"
```

HyperEVM:

```bash
curl -H "Authorization: Bearer $FEMTOS_KEY" "https://api.femtos.xyz/v1/holders/history?layer=hyperevm&token=<evmToken>&days=30"
```

| Field | Type | Meaning |
|---|---|---|
| `points[]` | object | One per daily snapshot in the window, oldest first; the snapshots before the token's first holder are left out: {day, t, height, holders} |
| `points[].holders` | int | Holders at that head: positive balances, system addresses left out (as /holders totalHolders) |
| `current` | object \| null | The count at the indexed head now; null when it cannot answer: {t, height, holders} |
| `since` | int \| null | Time of the layer's first snapshot (Unix ms): the history starts there; null before it |

## Related (Holders & tokens)

- [Token registry](https://femtos.xyz/reference/coins.md) `GET /v1/coins`: HyperCore tokens with their HyperEVM contract and price. (Elysium, HyperCore, HyperEVM)
- [Coin detail](https://femtos.xyz/reference/coin.md) `GET /v1/coins/{layer}/{id}`: One token: its links across layers, the markets it trades on, its 5 largest holders. (Elysium, HyperCore, HyperEVM)
- [Token metadata](https://femtos.xyz/reference/tokens-batch.md) `GET /v1/tokens`: Metadata of up to 100 tokens: supply, creator, logo and socials when indexed, family, spam. Also POST with a JSON body. (Elysium, HyperCore, HyperEVM)
- [Token overview](https://femtos.xyz/reference/token-overview.md) `GET /v1/tokens/{address}`: One token across all its pools: price, FDV, market cap, liquidity, windows, holders, top pools. (Elysium, HyperEVM)
- [Token across layers](https://femtos.xyz/reference/token-lifecycle.md) `GET /v1/tokens/{address}/lifecycle`: One token from its Elysium launch to its HyperEVM mirror, HyperCore spot and perps, each link proven or marked inferred. (Elysium, HyperCore, HyperEVM)
- [Holders](https://femtos.xyz/reference/holders.md) `GET /v1/holders`: Spot balances of a HyperCore token, largest first. (Elysium, HyperCore, HyperEVM)
- [Holders stream](https://femtos.xyz/reference/ws/holders.md) `WS elysium.holders | hyperevm.holders`: The largest holders and holder count of a HyperEVM token (GET /v1/holders), pushed on subscribe and in the block that moves one of its balances. (Elysium, HyperEVM)
- [Perp holders](https://femtos.xyz/reference/holders-positions.md) `GET /v1/holders`: Largest open positions of a perp, long and short. (HyperCore)
- [Token families](https://femtos.xyz/reference/token-families.md) `GET /v1/token-families`: Tokens whose balance moves without Transfer logs: Aave aTokens and debt tokens, stHYPE, xStocks. (Elysium, HyperEVM)
- [Family token holders](https://femtos.xyz/reference/token-family.md) `GET /v1/token-families/{token}`: Holders of one family token with balanceOf at the indexed head. (Elysium, HyperEVM)
- [Token transfers](https://femtos.xyz/reference/transfers.md) `GET /v1/transfers`: ERC-20 Transfer events of one token, newest first. (Elysium, HyperEVM)
- [Token transfers stream](https://femtos.xyz/reference/ws/transfers.md) `WS elysium.transfers | hyperevm.transfers`: The ERC-20 transfers of one token on HyperEVM, pushed as each block is indexed; min_usd or min_amount for whale alerts. (Elysium, HyperEVM)
- [Token security](https://femtos.xyz/reference/token-security.md) `GET /v1/tokens/{address}/security`: Honeypot check: a buy, a transfer and a sell simulated on our node, taxes, owner powers, holders and LP, with a verdict. (Elysium, HyperEVM)
- [Top traders](https://femtos.xyz/reference/token-traders.md) `GET /v1/tokens/{address}/traders`: The wallets that traded a token over the last 1h, 6h or 24h, ranked by PnL or volume, with average prices and realized / unrealized PnL. (Elysium, HyperEVM)
- [Spam tokens](https://femtos.xyz/reference/spam-tokens.md) `GET /v1/tokens/spam`: Tokens the indexer flags as spam, left out of every list, and the latest flag changes. (Elysium, HyperEVM)

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