Web3 Provider Watch — 2026-09-16

Run log (no narrative digest was archived for this date).

Checked 30 providers (rotating slice: Blockberry..Etherscan API v2 incl. Chainstack x2, Codex, CoinGecko, CoinMarketCap, DefiLlama, DexScreener, DoubleZero, Dune x2, Dwellir, Envio x3, Blockspace, FastNear, SonarX, Fogo) plus Goldsky and QuickNode Streams rows, and the 7 items due within 14 days; swept Sept 14-16 news. Headline: Etherscan API v2 added Robinhood Chain (4663) and Arc (5042) on Sept 16 - community endpoints free until Oct 15, Lite+ from Oct 16, source/ABI free forever (new Oct 15 deadline). Goldsky launched Boost (Sept 15), a free fair-use RPC caching CDN whose launch chains include Avalanche C-Chain and Robinhood Chain. QuickNode Key-Value Store GA (Sept 14) for Streams filters. Changes: Chainstack Business now consistently $349/$290 (Yellowstone add-on $49/$149/$449, GROWTH50 live); CoinMarketCap Basic renders 10K credits/30 rpm personal-use and the yearly promo code is gone; DoubleZero Edge official seat pricing $450/$900/$1,500 per month by metro. New entrant: Carbium (Solana bare-metal RPC/gRPC, free tier, from $32/mo; unverified). Deadlines: all seven unchanged (Summit NYC day one, no promo; ETHOnline ends today with a $76K pool confirmed; Alchemy 7702 Sept 21 and NFT sunset Sept 30; Helicon Sept 22 15:00 UTC on v1.15.0, no v1.15.1; Moralis Sept 25; Sui docs say 'end of September'). Official channels otherwise quiet (Alchemy 9/10, Chainstack 9/11, Helius 9/05, Moralis 8/26, Ava Labs 9/08, The Graph 9/01, dRPC 9/07). No new credits or grant programs in window. Unreadable: dune.com/pricing (JS shell; both Dune rows unverified), doublezero.xyz marketing pages (403), QuickNode/Helius/Dune/MetaMask changelog URLs (404; blogs used).