Boost

DISAMBIGUATION NOTE: 'Boost' is an extremely generic company name (Boost Mobile, Boost Insurance, Boost nutritional drinks, Boost C++ Libraries, numerous fintech 'Boost' apps, etc.). This profile was built by first confirming, via Greylock's own live portfolio site (greylock.com/portfolio/boost/), that Greylock's 'Boost' portfolio company resolves to the website https://boost.xyz/, is categorized under Greylock's Fintech portfolio, is headquartered in New York, NY, has CEO Brian Flynn, and was 'First Partnered' with Greylock at the Series A stage via investors Mike Duboé and Christine Kim. This exact identity (boost.xyz, Brian Flynn, Greylock Series A) was then cross-verified against Crunchbase, CB Insights, Dealroom, and Boost's own website/legal documents, giving high confidence this is the correct entity and ruling out the many unrelated 'Boost' companies. ORIGIN STORY: The company operating boost.xyz was founded in 2020 as RabbitHole (legal entity RabbitHole Studios Inc.), a Venice, California-based startup led by founder/CEO Brian Flynn. RabbitHole's original product, 'Quests,' was an onchain task system: users completed curated onchain tasks (trying new DeFi protocols, NFT platforms, DAOs, etc.) to earn crypto token rewards, receiving 'Quest Receipts' (NFTs) as proof of completion that could be transferred or redeemed for rewards. RabbitHole raised early capital in a currently-undisclosed round around November 2020 and a Seed round around June 25, 2021 with investors including Electric Capital, Slow Ventures, Framework Ventures, ParaFi Capital, Collab+Currency, Late Checkout, and angel investor Larry Sukernik (per Dealroom.co and CB Insights; exact seed amount not disclosed, but implied to be roughly $4M based on the gap between total funding and the disclosed Series A amount). RabbitHole then raised an $18M Series A on approximately February 16, 2022, co-led by Greylock Partners and TCG Crypto (The Chernin Group's crypto fund), with participation from 6th Man Ventures and others (per CB Insights, Crunchbase, and Greylock's own portfolio page). Total disclosed funding across all rounds is $22.01M (per CB Insights, cross-checked twice via independent queries). No valuation has ever been publicly disclosed for any round. REBRAND TO BOOST: Sometime after the Series A, the company evolved from a single consumer quest app into an open incentive protocol called 'Boost' with the tagline 'the distributed incentives network' / 'the marketplace for onchain actions.' Corroborating evidence: (1) CB Insights and Dealroom.co both explicitly label the company 'Boost, formerly known as RabbitHole'; (2) the current boost.xyz Terms of Service (hosted on the legacy 'rabbithole-assets' S3 bucket, filename 'BoostStudios_Terms_Of_Service.pdf,' last updated Jan 31, 2024) identifies the operating entity as 'Boost Studios Inc, a Delaware corporation'; (3) the @boost_xyz X/Twitter account was created in May 2023 (vs. @rabbithole_gg, created April 2020, which is still active with ~2,000 posts vs. Boost's 435); (4) Boost's LinkedIn company page (linkedin.com/company/boostxyz, 2,474 followers, industry 'Blockchain Services,' company size '11-50 employees,' founded '2020') is titled 'Rabbithole Studios' and its About section states verbatim: 'Boost is a protocol for anyone to deploy incentive offers to targeted wallets to perform onchain actions. To drive the growth and adoption of the Boost ecosystem, Boost Studios is a core contributor providing product and services support to the network. Its primary frontend client contribution is Boost Inbox (formerly RabbitHole) and the Boost Manager.' This clarifies that 'RabbitHole' was rebranded/subsumed as 'Boost Inbox,' one of several client apps built by Boost Studios Inc. on top of the broader open 'Boost' protocol. Notably, the legacy consumer site rabbithole.gg remains live as of August 2026 (last-modified within the prior two days per HTTP headers) under the heading 'Rabbithole | The platform for on-chain growth that actually sticks,' now positioned as an 'Activation & Retention' campaign product for teams (a B2B pivot from the original consumer quest model), with a documentation link pointing to docs.boost.xyz and a '/teams' page still branded 'Rabbithole Studios.' This suggests Rabbithole and Boost currently coexist as related but distinct product surfaces/brands under the same Delaware corporation, rather than a clean one-to-one rename — a nuance worth flagging for anyone reconciling 'RabbitHole' vs. 'Boost' records. PRODUCT (BOOST.XYZ, as of Aug 2026): The current boost.xyz marketing site describes 'Incentive campaigns that just work: Distribute tokens to drive real user transactions, measure ROI, and iterate fast — on Farcaster, World, or the open web.' It supports Base, Optimism, Arbitrum and other EVM chains; integrates identity/anti-Sybil verification including World ID; and offers a four-step flow (create a target onchain action, deposit funds, deploy & distribute via Farcaster/World/open web or embedded SDK, then optimize spend). Named products/surfaces: Boost Manager (app.boost.xyz / manager.boost.xyz), Boost Inbox (inbox.boost.xyz), a 'Lift' MiniApp (human-verified claim flow with leaderboards/streaks), a white-label Headless SDK, and RewardKit (a drop-in incentive widget). The live homepage includes real-time counters for 'Rewards distributed,' 'Unique users,' and 'Boosts deployed,' but these were placeholder ('—') at time of fetch (JS-rendered, not present in static HTML), so no current usage metrics could be confirmed. A 'Trusted by teams at' partner-logo section on boost.xyz uses generic unlabeled alt text ('Partner 1'..'Partner 7'), so specific named customers could not be confirmed from that page; however, the related rabbithole.gg '/teams' page displays named partner/customer logos for Arbitrum, Celo, Morpho, Optimism, Para, Polymarket, Uniswap, World, and Zora under 'Teams using Rabbithole.' TEAM: The only founder that could be confirmed across sources (Crunchbase, CB Insights) is Brian Flynn, CEO & Co-founder, who previously worked at Dapper Labs, OpenSea, and Foursquare, and studied Entrepreneurship & E-commerce at the University of Scranton. CB Insights notes 'Boost has 4 executives' but only Brian Flynn's identity was accessible without a paid subscription; no other named co-founders, executives, or board members could be independently confirmed. Boost's public job board (via Ashby, jobs.ashbyhq.com/Boost) showed zero open roles at time of research, consistent with a small (~11-50 person, LinkedIn-reported) team. STATUS & RISK SIGNALS: CB Insights lists the company's funding status as 'Alive'/Series A (current stage), and the boost.xyz product, blog/docs, X account, Discord, and Farcaster presence are all active as of August 2026. However, CB Insights also flagged a 'Mosaic Score' decline of -61 points in the trailing 30 days as of the research date, which CB Insights describes as indicating 'recent financial health concerns' — this is a proprietary third-party sentiment/health score, not independently verified, and should be treated as a soft signal rather than confirmed fact (e.g., it does not necessarily mean the company is shutting down). COMPETITIVE LANDSCAPE: CB Insights' automated 'alternatives' list names Roxonn (decentralized contribution platforms) as Boost's 'top competitor,' along with Buildspace, OpenZeppelin, Safe, Gnosis, Juicebox, and Colony — several of these (OpenZeppelin, Safe/Gnosis) are only loosely comparable (smart contract security/treasury tooling rather than incentive marketing), suggesting CB Insights' algorithmic matching may be imprecise for this niche category. Extensive additional web/news search to identify more directly comparable onchain quest/incentive-marketing platforms (e.g., other quest or Web3 growth-marketing tools) could not be completed in this session due to search-engine access restrictions in the research environment (see Sources note below), so the competitor list here should be treated as partial. SOURCING CAVEAT: This research session's WebSearch tool budget was exhausted early, and most third-party search engines (Google, Bing rendered results, DuckDuckGo, Yandex, Startpage, Ecosia, Wayback Machine) were either robots-blocked or bot-detected/non-functional via direct HTTP fetch, which limited the ability to locate press coverage (TechCrunch/CoinDesk/The Block/Decrypt-style articles) of the RabbitHole Series A announcement or the Boost rebrand specifically. All facts in this profile are instead drawn directly from primary sources (Greylock's own site, Boost's own site/docs/legal PDFs, Boost's LinkedIn and X profiles) and structured data aggregators (Crunchbase, CB Insights, Dealroom.co), each accessed directly. No news articles could be confirmed as sources, so the 'news' array below is empty rather than guessed.

Business model

B2B2C protocol/infrastructure company: crypto protocols, DeFi apps, L2 ecosystems, wallets and stablecoin issuers use Boost's tools (Manager, SDK, RewardKit) to design and fund onchain incentive campaigns; end users ("Boost Participants") discover and claim rewards via Boost Inbox / Lift mini-app.

Takes a percentage fee of rewards distributed through Boost campaigns; also offers enterprise/volume pricing for large ecosystem partners (per boost.xyz FAQ).