# Crypto Calendar (`catalysts_calendar`)

> Crypto events landing inside the next seven days, filterable to a single coin when only its own catalysts matter.

- Category: Events & catalysts
- MCP tool: `catalysts_calendar`
- REST: `GET /catalysts/calendar`
- x402 price: $0.01 per call (USDC on Base)
- HTML: https://www.f1ow.com/docs/tools/catalysts_calendar

## What it does

Lists upcoming crypto catalyst events for the next 7 days. Optionally filter by comma-separated coin symbols (e.g. 'sol,eth').

## Parameters

| Name | Type | In | Required | Description |
| --- | --- | --- | --- | --- |
| `coins` | string | query | no | Comma-separated coin symbols, e.g. 'sol,eth'. Omit for all coins. |

## Call it

### cURL

```bash
curl "https://mcp.f1ow.com/v1/catalysts/calendar?coins=eth,sol" \
  -H "Authorization: Bearer $F1OW_API_KEY"
```

### MCP

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "catalysts_calendar",
    "arguments": {
      "coins": "eth,sol"
    }
  }
}
```

### TypeScript

```ts
const res = await fetch("https://mcp.f1ow.com/v1/catalysts/calendar?coins=eth,sol", {
  headers: { Authorization: `Bearer ${process.env.F1OW_API_KEY}` },
});
const data = await res.json(); // the tool's result as JSON, typed in the OpenAPI spec
console.log(data);
```

### Python

```python
import os, requests

res = requests.get(
    "https://mcp.f1ow.com/v1/catalysts/calendar?coins=eth,sol",
    headers={"Authorization": f"Bearer {os.environ['F1OW_API_KEY']}"},
)
data = res.json()  # the tool's result as JSON, typed in the OpenAPI spec
print(data)
```

### WebSocket

```jsonc
// wss://mcp.f1ow.com/v1/ws — subprotocol "jsonrpc-2.0", Authorization: Bearer <key>
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "catalysts_calendar",
    "arguments": {
      "coins": "eth,sol"
    }
  }
}

// Or push a fresh result whenever it changes (minimum interval 15 s)
{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "subscriptions/subscribe",
  "params": {
    "name": "catalysts_calendar",
    "arguments": {
      "coins": "eth,sol"
    },
    "intervalSeconds": 60
  }
}
```

### x402

```bash
# No account: the first call answers 402 with a PAYMENT-REQUIRED challenge;
# an x402 client pays it in USDC on Base and retries.
curl "https://mcp.f1ow.com/x402/v1/catalysts/calendar?coins=eth,sol"
```

## Sample response

Captured 2026-11-13. The JSON is what REST and WebSocket return and the `structuredContent` of an MCP call (trimmed):

```json
{
  "events": [
    {
      "categories": [],
      "coins": [
        "SOL"
      ],
      "date": "2026-11-14T00:00:00Z",
      "title": "Scale or Die London"
    },
    {
      "categories": [],
      "coins": [
        "AKT",
        "BP",
        "CARDS",
        "2Z",
        "JTO",
        "JUP",
        "… 8 more"
      ],
      "date": "2026-11-15T00:00:00Z",
      "title": "Breakpoint 2026"
    }
  ],
  "generatedAt": "2026-09-21T23:00:30.0000000+00:00"
}
```

Over MCP the text report a model reads comes with it:

```text
2026-11-14 | SOL
  Scale or Die London
2026-11-15 | AKT, BP, CARDS, 2Z, JTO, JUP, KMNO, META, NEAR, ORCA, PLUME, PYTH, SECZ, SOL
  Breakpoint 2026
```

## Related tools

- [ETF Flows](https://www.f1ow.com/docs/tools/catalysts_etf_flows) — Daily spot-ETF net flows for BTC, ETH, SOL and XRP — the latest day, the per-fund breakdown, and the trailing trend it has to be read against.
- [Prediction Odds](https://www.f1ow.com/docs/tools/events_prediction_odds) — What real money says about a question: per-outcome probabilities, the volume standing behind them, and when the market resolves.
- [Macro Calendar](https://www.f1ow.com/docs/tools/catalysts_economic_calendar) — CPI, FOMC, jobs and GDP — the macro releases that move crypto anyway — from two days back to a week ahead, filtered by importance.
- [Exchange Listings](https://www.f1ow.com/docs/tools/catalysts_exchange_listings) — Official venue notices for new listings, delistings and other trading changes, with scheduled times, recent history, and coin or venue filters.