Sunsetting Struct Polymarket Support on September 30, 2026
Struct is sunsetting all Polymarket APIs on September 30, 2026. Here is the shutdown timeline, native Polymarket migration guide, and billing details.
On September 30, 2026 at 23:59 UTC, Struct will sunset all Polymarket offerings. This includes the Polymarket REST API, real-time WebSockets, automated webhooks, trader PnL endpoints, and the Polymarket Explorer.
If you run production bots, dashboards, analytics pipelines, or agents that depend on Struct for Polymarket data, you must switch your upstream data sources to Polymarket's native APIs before September 30 to prevent service interruptions.
The short version:
- Cutoff date: All Struct Polymarket endpoints permanently shut down on September 30, 2026 at 23:59 UTC.
- Migration path: Offboard to Polymarket's official endpoints: Gamma, CLOB, Data API, CLOB Market WebSocket, and RTDS.
- Billing stopped: Auto-renewals are cancelled immediately. Your API keys remain operational through September 30.
- Prorated refunds: Any prepaid subscription balance extending beyond September 30 will be refunded automatically to your original payment method.
- Company direction: Struct is focusing full engineering capacity on general-purpose, high-throughput onchain indexing across Solana and EVM chains.
What is the shutdown timeline?
We are providing a two-week transition window to give developers time to point systems toward Polymarket's official developer services.
| Date | Status | Impact on your integration |
|---|---|---|
| September 17, 2026 | Auto-renewals cancelled | No further charges occur. All active API keys retain full access. |
| September 17 to September 30, 2026 | Migration window | Endpoints remain live. Update clients to Polymarket native APIs. |
| September 30, 2026 (23:59 UTC) | Complete sunset | REST, WebSocket, and Webhook servers shut down with HTTP 410 Gone. |
| October 1, 2026 | Automated refunds | Prorated refunds process for prepaid subscription time past September 30. |
How do I migrate to native Polymarket APIs?
Point your clients at Polymarket's native surfaces. Their API overview covers the rest.
| Struct Capability | Native Polymarket Replacement |
|---|---|
| Market metadata & events | Gamma API (https://gamma-api.polymarket.com) |
| Order books | CLOB API (https://clob.polymarket.com) |
| Trades & positions | Data API (https://data-api.polymarket.com) |
| Live trade tape | RTDS (wss://ws-live-data.polymarket.com) |
| Live order book & prices | CLOB Market WebSocket (wss://ws-subscriptions-clob.polymarket.com/ws/market) |
Public trade history and positions live on the Data API. Authenticated CLOB routes are for trading, not a drop-in public /trades replacement.
How will billing and subscriptions be handled?
You do not need to cancel your subscription manually. We have turned off recurring billing across all paid plans as of September 17, 2026.
- Current access: Your API tier limits and keys remain valid through September 30, 2026 at 23:59 UTC without interruption.
- Prorated refunds: If your billing cycle billed before September 17 for service that extends beyond September 30, our payment processor will automatically issue a prorated refund for the unused duration starting on October 1, 2026.
- Enterprise agreements: Dedicated enterprise agreements will receive direct outreach from our accounts team regarding custom data delivery and closeout terms.
What is next for Struct?
We built Struct to solve deep indexing challenges: tracking hundreds of millions of trades, building sub-second mempool listeners, and computing mark-to-market PnL across fast-moving smart contracts.
We are bringing that indexing architecture to high-throughput decentralized finance. Struct is focusing engineering efforts on scalable, real-time indexers and developer APIs for Solana programs and EVM applications. We look forward to sharing more details on these products later this year.
How can you get help?
We do not offer full historical Polymarket data exports. Use the live API through September 30 to finish any remaining pulls, then move to Polymarket's native endpoints.
For billing, account, or migration questions, contact the team at support@struct.to or through the contact page.