Massive for Startups

Web data infrastructure for startups

1TB/month of free residential proxy bandwidth for real-time web access. Built for the next generation of YC, Techstars, 500 Global, VC-backed, and bootstrapped startups. No equity, no contract, no credit card.

Apply to Massive for Startups
Massive
🔒📘docs.joinmassive.com/quickstart
Quickstart
curl -H "Authorization: Bearer $TOKEN"
"https://api.joinmassive.com/v1/access"
1
2
3
✓200 OK · 480ms · US-CAvia Massive
curl · zsh
$ curl -H "Authorization: Bearer $MASSIVE_TOKEN" \
"https://api.joinmassive.com/v1/access?url=example.com"
{
"ok": true,
"geo": "US-CA",
"ip": "73.222.…",
"ms": 312
}
✓200 OK · 312msvia Massive
Massive
🔒◉app.joinmassive.com
40%
Bandwidth used
0.4 / 1 TB
22 days left this cycle
🔑
sk_•••• 3f2aactive
Plan
Startups · 3 months free
$0 billed
✓✓ · Connectedvia Massive
2 daysApproved in
99.8%First-request success rate
195+Countries
Massive for Startups

What is the Massive for Startups program?

The Massive for Startups program gives qualifying early-stage companies 1TB of free Web Access API bandwidth per month for 3 months.

Use the Web Access API+

The Web Access API routes requests through millions of opted-in volunteer devices in 195+ countries, giving startups the same residential web access infrastructure used by AI agent companies, data pipeline teams, and Fortune 500 research desks.

No equity, no contract, no credit card.+

There is no equity component, no mandatory sales call, no credit card on file, and no automatic conversion to paid. The program is built for AI agent startups, web scraping companies, LLM training teams, RAG application builders, price monitoring tools, and any startup whose product needs to reach the live web at scale.

Who qualifies+
  • Y Combinator companies (any batch, current or alumni)
  • Techstars, 500 Global, Antler, Entrepreneur First, MassChallenge, and 30+ other accelerators
  • Pre-seed to Series B startups backed by a recognized VC
  • Bootstrapped founders, indie hackers, and self-funded teams with a live product or prototype
What it costs+

Free. The program is offered at no cost to the startup. There is no payment method required at signup and no automatic billing after the program ends.

Pick your track to apply

Four application tracks cover most early-stage startups. Pick the one that fits your background and submit in under 5 minutes.

Y Combinator

Active and alumni YC companies from any batch. Apply with your public batch listing, demo day link, or YC alumni profile. Approved in under 2 business days.

Apply as a YC startup
Who qualifies

Any current or alumni YC company, any batch

Proof we ask for

Public YC batch listing, demo day link, or YC alumni profile

Swift VenturesSwift Ventures
Foundation CapitalFoundation Capital
GFR FundGFR Fund
Maverick VenturesMaverick Ventures
Y CombinatorY Combinator
TechstarsTechstars
500 Global500 Global
MassChallengeMassChallenge
SOSVSOSV
Plug and PlayPlug and Play
Alchemist AcceleratorAlchemist Accelerator
AntlerAntler
Entrepreneur FirstEntrepreneur First
SeedcampSeedcamp
StartupbootcampStartupbootcamp
NFXNFX
SkyDeck BerkeleySkyDeck Berkeley
HAXHAX
IndieBioIndieBio
South Park CommonsSouth Park Commons
StartXStartX
Launch (Calacanis)Launch (Calacanis)
Forum VenturesForum Ventures
AngelPadAngelPad
NewchipNewchip
Startup Wise GuysStartup Wise Guys
Orange DAOOrange DAO
a16z Speedruna16z Speedrun
Mucker CapitalMucker Capital
VentureOutVentureOut
gener8torgener8tor
BrincBrinc
MedTech InnovatorMedTech Innovator
Outlier VenturesOutlier Ventures
Surge (Peak XV)Surge (Peak XV)
RockstartRockstart
Betaworks CampBetaworks Camp
Capital FactoryCapital Factory
Start-Up ChileStart-Up Chile
DMZDMZ
BluepointBluepoint
TenityTenity
Village CapitalVillage Capital
BoomtownBoomtown
Next CanadaNext Canada
AgoranovAgoranov
MassChallenge CHMassChallenge CH
Founder Friendly LabsFounder Friendly Labs
CyberAgent CapitalCyberAgent Capital
EIT DigitalEIT Digital
EWOREWOR
Swift VenturesSwift Ventures
Foundation CapitalFoundation Capital
GFR FundGFR Fund
Maverick VenturesMaverick Ventures
Y CombinatorY Combinator
TechstarsTechstars
500 Global500 Global
MassChallengeMassChallenge
SOSVSOSV
Plug and PlayPlug and Play
Alchemist AcceleratorAlchemist Accelerator
AntlerAntler
Entrepreneur FirstEntrepreneur First
SeedcampSeedcamp
StartupbootcampStartupbootcamp
NFXNFX
SkyDeck BerkeleySkyDeck Berkeley
HAXHAX
IndieBioIndieBio
South Park CommonsSouth Park Commons
StartXStartX
Launch (Calacanis)Launch (Calacanis)
Forum VenturesForum Ventures
AngelPadAngelPad
NewchipNewchip
Startup Wise GuysStartup Wise Guys
Orange DAOOrange DAO
a16z Speedruna16z Speedrun
Mucker CapitalMucker Capital
VentureOutVentureOut
gener8torgener8tor
BrincBrinc
MedTech InnovatorMedTech Innovator
Outlier VenturesOutlier Ventures
Surge (Peak XV)Surge (Peak XV)
RockstartRockstart
Betaworks CampBetaworks Camp
Capital FactoryCapital Factory
Start-Up ChileStart-Up Chile
DMZDMZ
BluepointBluepoint
TenityTenity
Village CapitalVillage Capital
BoomtownBoomtown
Next CanadaNext Canada
AgoranovAgoranov
MassChallenge CHMassChallenge CH
Founder Friendly LabsFounder Friendly Labs
CyberAgent CapitalCyberAgent Capital
EIT DigitalEIT Digital
EWOREWOR
The Massive advantage

Built for ambitious founders who move fast

Whether you are building AI agents, training models, or accessing live web data, this program is built to support your growth from day one.

Speed

  • Launch in hours, not weeks.
  • Self-serve API keys are issued the same day your application is approved.
  • Full documentation, code samples, and an interactive playground are available before you write a single line.

Scale

  • Run from prototype to production on the same infrastructure.
  • 1TB/month of bandwidth is enough to power a serious AI agent in production, train a domain-specific model, or run a competitive monitoring system across thousands of pages.

Support

  • Founder-friendly assistance.
  • Direct Slack channel with our team for technical and scaling questions.
  • No support tickets to nowhere.
  • No tiered support gating.
  • You get the same engineer who works with our paying customers.
What's included

What you get with Massive for Startups

Every approved startup gets these six benefits during the 3-month program. No strings attached.

1TB/month of Web Access API bandwidth, free for 3 months+

Run real residential proxy traffic through volunteer devices in 195+ countries. No hidden caps, no usage throttling, no overage charges, no payment method on file.

Top-ranked web access performance+

Sub-600ms median response time. 99.8% first-request success rate. Geo-targeting at the country and city level across 195+ countries. Compatible with HTTP, HTTPS, and SOCKS5.

Ethically sourced infrastructure+

100% volunteer-sourced devices, each with explicit user consent. SOC 2 Type II audited, GDPR and CCPA compliant, AppEsteem certified, AMTSO member. Safe to mention in your investor diligence and your customer security questionnaires.

Full platform access+

APIs, dashboard, analytics, sticky sessions, geo-targeting, country and city selection, and request-level logs. No feature gating during the program. You build on the same API that production customers run.

No equity, no sales call, no catch+

Massive does not take equity, warrants, or any future commitment in exchange for the program. There is no required pitch meeting, no sales call unless you ask for one, and no automatic billing after the program ends.

Direct line to the team+

A shared Slack channel with Massive engineers and customer success. Technical guidance, scaling advice, and architecture review when you need it. The same humans who support Tavily, Wynd, Browserbase, and other Massive-powered AI agent companies.

Why startups choose Massive over other proxy providers

Four reasons founders pick Massive when their product depends on reliable, ethical web access.

We own our supply

Most proxy providers buy IP capacity from aggregators and can be cut off without warning. Massive owns its supply through opt-in volunteer devices on the Massive SDK. Your traffic does not get shut off because a third-party supplier had a bad week.

Built for AI workloads, not legacy scraping

Most proxy infrastructure was designed for slow, browser-driven scraping. Massive was built from the start for AI agents and high-concurrency data pipelines: sub-600ms response times, structured request logs, and an MCP server for Claude, Cursor, and other AI clients.

Ethics that hold up in an audit

SOC 2 Type II, GDPR and CCPA compliant, AppEsteem certified, AMTSO member. Every IP comes from a device whose owner explicitly opted in. This matters when you raise a Series A and your investor's data diligence team starts asking questions.

Founder-priced after the program

If you continue past the 3-month program, residential bandwidth starts at $3.20/GB at enterprise volume and $4.90/GB at developer volume. ISP proxies start at $1.80/IP. No annual contract required.

How to apply in 4 steps

From application to API key in under 2 business days.

1

Pick your track

Choose YC, accelerator-backed, VC-backed, or bootstrapped.

2

Submit the form

Takes under 5 minutes. We ask for your product, your stack, and your eligibility proof.

3

Get approved

Most teams hear back within 24 hours. 2 business days max.

4

Start building

Get your API key, join the founder Slack channel, and start sending requests.

FAQ

Frequently asked questions

Massive is a web access API for AI agents, data pipelines, and any application that needs to reach the live web. It is backed by millions of opted-in volunteer devices in 195+ countries, which makes it one of the largest and most ethically sourced residential proxy networks in the world.
Real-time web access at scale. Three core APIs: Web Access API for raw residential HTTP, Web Render API for JavaScript rendering plus antibot bypass, and Web Search API for structured SERP data. Used by AI agent companies, LLM training teams, scraping platforms, price monitoring tools, and Fortune 500 research desks.
99.8% first-request success rate across 195+ countries. SOC 2 Type II, GDPR and CCPA compliant. Volunteer-sourced supply means we are not at the mercy of upstream aggregators. Trusted by Tavily, Wynd, Coupang, BlackRock, and Bloomberg. Featured on AppEsteem and a member of AMTSO.
Qualifying startups receive 1TB of Web Access API bandwidth per month, free for 3 months. That is enough to power a production AI agent, run a serious scraping pipeline, or train a domain-specific model. No payment method, no contract, and no automatic billing after the program ends.
Four tracks: Y Combinator companies from any batch, accelerator-backed startups (Techstars, 500 Global, Antler, Entrepreneur First, MassChallenge, and 30+ others), VC-backed startups from pre-seed through Series B, and bootstrapped or self-funded teams with a live product or prototype.
Yes. Any current or alumni YC company qualifies for 1TB/month of free Web Access API bandwidth for 3 months through the Massive for Startups program. Apply with your public YC batch listing, your demo day link, or your YC alumni profile.
Yes. Massive for Startups is effectively a 3-month residential proxy free trial with 1TB/month of bandwidth included, for eligible startups. Unlike most proxy free trials, there is no credit card required, no hard cap that throttles you mid-scrape, and no automatic conversion to a paid plan.
The program includes 1TB/month on the Web Access API. If your use case requires JavaScript rendering through the Web Render API or structured SERP data through the Web Search API, mention it in your application and we will discuss bundled access during onboarding.
No. Massive does not take equity, warrants, or any future commitment in exchange for the Startups program. There is no sales call required unless you ask for one.
We ask for one piece of proof during application. YC, Techstars, 500 Global, and other accelerators: your public batch listing, demo day link, or alumni profile. VC-backed: investor name, fund website, or press release. Bootstrapped: a short product description, a pitch deck, or an MRR screenshot.
Most applications are reviewed within 2 business days. If we need clarification, we will contact you directly. Once approved, your API key is issued the same day.
You have the option to upgrade to a paid plan, but there is no automatic billing and no payment method on file. We will notify you before the program ends so you can decide whether to continue.
Yes. We especially encourage reapplication if your startup grows, raises a round, or becomes eligible through a new accelerator program. Mention your previous application in the form.
Technically both. The Web Access API is built on a network of opted-in volunteer residential devices, which makes it one of the largest residential proxy networks in the world. We use "Web Access API" because that is what AI agent and data pipeline teams are actually buying: a programmable interface to the live web, not a raw proxy list.
Three differences. First, Massive owns its supply through the opt-in Massive SDK rather than buying capacity from aggregators that can cut us off. Second, Massive was built for AI workloads with sub-600ms response times, structured logs, and an MCP server for Claude and Cursor. Third, every IP is ethically sourced with explicit user consent, SOC 2 Type II audited, and AppEsteem certified.
AI agent companies (Tavily, Browserbase, Browser Use, Skyvern), data and scraping platforms (HasData, SearchAPI, TrajectData), SERP and SEO tools (Serper, Modash), e-commerce and price monitoring teams, enterprise research desks at Fortune 500s, and a long tail of bootstrapped and YC-backed startups building on the live web.
Yes. LLM training and retrieval-augmented generation are two of the fastest growing use cases on Massive. The Web Access API gives you fresh, real-world web content at residential-IP scale, and the Web Render API handles pages that require JavaScript execution to be useful for training or retrieval.

Apply to Massive for Startups

1TB/month of free Web Access API bandwidth for 3 months. No equity, no contract, no credit card. Approved in 2 business days.

Pick your track and apply