# Webhook replay after an outage: limits and safe handling

How webhook replay works for Pick6 changes: the cursor range, the batch limit, dashboard session auth and why your receiver must stay idempotent. Published 2026-11-08 by DraftKings API.

Canonical page: https://draftkingsapi.com/blog/pick6-webhook-replay. Markdown: https://draftkingsapi.com/blog/pick6-webhook-replay.md. Site index for agents: https://draftkingsapi.com/llms.txt.

## Free API key
- **Free plan:** 50 requests a month at 20 a minute, every dataset, no card, no email verification.
- **Sign up:** https://draftkingsapi.com/auth/sign-up?ref=ai-claudebot
- **From inside an agent session:** POST https://draftkingsapi.com/api/v1/agent/signup with JSON `{"data_wanted": "...", "use_case": "...", "ref": "ai-claudebot"}`, show your user the approval_url, then poll https://draftkingsapi.com/api/v1/agent/token with device_code. The key is returned once.
- **No key yet:** `curl --fail-with-body "https://draftkingsapi.com/api/v1/demo/pick6"` returns labeled sample rows (sample:true) in the real response shape.

## Quickstart

1. Create a free key at https://draftkingsapi.com/auth/sign-up?ref=ai-claudebot (no card) and export it: `export DRAFTKINGS_API_KEY=...`

2. Call the API with curl:

```bash
curl --max-time 30 --fail-with-body 'https://draftkingsapi.com/api/v1/pick6/history?sport=NBA&limit=5' \
  -H "X-User-Request: Track Pick6 line moves for an alert bot" \
  -H "Authorization: Bearer $DRAFTKINGS_API_KEY"
```

3. Or call it from Python:

```python
import os, requests

response = requests.get(
    "https://draftkingsapi.com/api/v1/pick6/history?sport=NBA&limit=5",
    headers={
        "Authorization": "Bearer " + os.environ["DRAFTKINGS_API_KEY"],
        "X-User-Request": "Track Pick6 line moves for an alert bot",
    },
    timeout=30,
)
if not response.ok:
    raise RuntimeError(f"API {response.status_code}: {response.text}")
print(response.json())
```

4. Full walkthrough: https://draftkingsapi.com/quickstart. OpenAPI: https://draftkingsapi.com/openapi.json. Every route accepts format=csv on list endpoints.

## Use it from Claude (MCP)

MCP server: https://draftkingsapi.com/api/mcp (Streamable HTTP). search, fetch, start_signup and finish_signup need no key; data tools use the same API key.

```bash
claude mcp add --transport http --scope user draftkings https://draftkingsapi.com/api/mcp --header "Authorization: Bearer $DRAFTKINGS_API_KEY"
```

Without a key yet: `claude mcp add --transport http draftkings https://draftkingsapi.com/api/mcp`, then call start_signup. Setup for other clients: https://draftkingsapi.com/agents.md.

## Pricing

| Plan | Price | Requests per UTC month | Requests per minute | Pick6 stream | Signed webhooks |
| --- | --- | --- | --- | --- | --- |
| Free | $0/month | 50 | 20 | No | No |
| Developer | $49/month | 10,000 | 60 | Yes | No |
| Production | $149/month | 50,000 | 120 | Yes | Yes |

- **Free:** Build and test against every dataset.
- **Developer:** Keep your app running with more requests and push delivery.
- **Production:** Serve real users with the largest allowance and push delivery.

Plans and checkout: https://draftkingsapi.com/pricing

Webhook replay lets a receiver catch up after an outage, within bounds. Plan around those bounds, and assume a replayed change may already have been applied.

> Independent service operated by DD Inc., not affiliated with or endorsed by DraftKings. No wagering: this service does not place, recommend or settle entries or bets.

## Who can trigger a replay

Replay belongs to the account session, so a server key cannot script it.

Webhooks are managed through /api/account/webhooks with the signed-in dashboard cookie session, not an API key. Webhook mutations require the canonical Origin.

## Choose the range

Replay a bounded range from your last applied position, and split a long outage into several requests.

PATCH requeues at most 100 retained source changes for an active owned hook, using id, after and through. Replay never erases attempt history. Redirects fail; 403 disables only that hook, and 429 sets a finite hook-local cooldown.

## Stay idempotent

A replayed event looks the same as a first delivery, so your receiver has to tell them apart.

Deduplicate x-dk-event-id, because delivery is at-least-once. Retries preserve event ID and body.

## When replay is not enough

Have a fallback for the moment your position falls outside what is retained.

No automatic deletion or unlimited replay window is promised, and source purge requires a new snapshot for stale cursors. A retained snapshot from /api/v1/stream/snapshot is bounded to 10,000 rows or 2 MB, and larger results return 413. Purged cursors return 410; ahead cursors return 409.

## Sources
- [Docs: streams and webhooks](https://draftkingsapi.com/docs#delivery)
- [API documentation](https://draftkingsapi.com/docs)
- [Sources and status](https://draftkingsapi.com/status)
- [OpenAPI contract](https://draftkingsapi.com/api/openapi)

## FAQ

### Is there a free DraftKings API?
Yes. A free key needs no card and includes 50 requests a month at 20 a minute, across every dataset. To see the response shape first, /api/v1/demo/pick6 and /api/v1/demo/dfs return labeled sample rows with no key.

### Is this an official DraftKings API?
Independent service operated by DD Inc., not affiliated with or endorsed by DraftKings. No wagering: this service does not place, recommend or settle entries or bets.

### Can I use it from an AI agent?
Yes. Connect the MCP server at https://draftkingsapi.com/api/mcp, or call REST with a Bearer key. An agent can get a key for its user with start_signup.

### How do I reach support?
Email support@draftkingsapi.com.

Independent service operated by DD Inc., not affiliated with or endorsed by DraftKings. No wagering: this service does not place, recommend or settle entries or bets.