QuickNode on Arc: the best-documented infrastructure relationship in the ecosystem

QuickNode has the clearest, most checkable Arc relationship of any provider covered in this cluster. It publishes full API documentation at quicknode.com/docs/arc, a dedicated chain landing page at quicknode.com/chains/arc, and a dated partnership post via Arc's own community channel. As of 2 September 2026, all of it is explicitly scoped to Arc's testnet — the documentation itself labels Arc "Beta" and lists no mainnet endpoint, because Arc has not published one.

Builds on Arc: RPC provider with full Arc testnet API docs, letting developers connect and build without running nodes. · Role: Serves · Category: Developer Infrastructure → RPC · Project page

Why this page is structured around the documentation, not a press release

Most entries in this cluster are built around a partnership announcement — a press release naming a company, with limited technical detail attached. QuickNode's case is different: the strongest evidence here is a working, maintained documentation set a developer can read and act on today, not a marketing claim about intent. That's a meaningfully different, harder-to-fake kind of confirmation, and this page is organized around what that documentation actually says.

What the documentation confirms, specifically

QuickNode's Arc docs specify Chain ID 5042002 for testnet access, with both HTTP and WebSocket (WSS) endpoint URLs provided. The docs describe Arc as an EVM-compatible Layer 1 built by Circle, using USDC as its native gas token, and state that most standard Ethereum JSON-RPC methods are supported — though "certain endpoints or behaviors may differ," a caveat worth taking seriously given Arc's custom fee and paymaster mechanics. Beyond basic JSON-RPC, QuickNode's Arc documentation also covers Debug API and Trace API support for transaction inspection, plus security practices and error-code references. The documentation page's last-updated date is 9 July 2026, and QuickNode separately published a dated blog post on 4 February 2026 — "Arc RPC infrastructure you can actually ship on" — through Arc's own community channel, confirming the relationship from Arc's side as well as QuickNode's.

Relationship to Arc, as of 2 Sep 2026

What "Beta" and the method-compatibility caveat actually mean for a builder

Two details in QuickNode's own documentation are worth taking at face value rather than skimming past. First, the "Beta" label on Arc itself signals that QuickNode is not presenting this as production-hardened, general-availability infrastructure — appropriate framing for a pre-mainnet chain. Second, the explicit note that "certain endpoints or behaviors may differ" from standard Ethereum JSON-RPC is a genuinely useful warning: Arc's gas-in-USDC model and paymaster system for alternative stablecoin gas payment are custom mechanics layered on top of otherwise-standard EVM execution, and a builder assuming perfect drop-in compatibility with existing Ethereum tooling should verify specific method behavior against QuickNode's docs rather than assume it.

How QuickNode compares to the rest of the confirmed RPC tier

GetBlock is the other provider in this cluster with published, dedicated Arc API documentation (docs.getblock.io/api-reference/arc), putting QuickNode and GetBlock in the same top confirmation tier. Alchemy and dRPC each publish a specific testnet endpoint page as well, one tier below full API documentation in depth but still solidly confirmed. Ankr and Infura, despite being major general-purpose RPC providers, have no Arc-specific listing found as of 2 Sep 2026. See Built on Arc's RPC providers comparison for the complete picture across every provider in this category.

What's still unconfirmed

No mainnet RPC endpoint exists through QuickNode for Arc, because Arc has not published an official mainnet RPC endpoint of its own as of 2 Sep 2026 — every provider in this category, QuickNode included, is capped by that same upstream gap. Pricing tiers, rate limits, and archive-node terms specific to Arc weren't independently detailed in the sources reviewed for this page; check QuickNode's current published Arc pricing directly.

Built on Arc is an independent directory. Arc is a Circle product; we are not affiliated with, endorsed by, or operated by Circle.

Sources: - Arc RPC | QuickNode Docs - Arc API Overview | QuickNode Docs - The leading Arc RPC & Data Platform — QuickNode - Arc RPC infrastructure you can actually ship on