Picture this

Who it is for

A beach cleanup needs 30 people at 7am Saturday. Crew Call asks each volunteer to stake $3, attendance is confirmed at the beach, and the no-show stakes split among attendees, so turnout jumps and showing up earns a streak.

Two ways to own it

What you get

Base$89

$22 deposit to reserve

Mission page, USDC stake RSVP, organiser check-in, auto redistribution, attendance streak badge.

You choose: chain
You choose: name and logo
You choose: accent color
You choose: stake size

Customfrom $700

Built around you

Reshape it entirely: new features, your flows, your brand end to end, integrations you need. We scope it with you.

Everything in Base
Custom features and design
Priority build

Why it is new

What exists today, and what this does differently

Why own your own

Stake-to-attend with no-shows funding attendees is live; Crew Call would apply it to missions rather than events.

Closest things out there

Unlock Labs Events has an "I'm Going" stake-to-RSVP feature, Show Up Protocol targets no-shows, and ShowUp (ETHGlobal NY 2025) redistributes forfeited stakes to attendees.

Checked with web searches in October 2026. A search is not proof that nothing similar exists, and the market moves fast, so we recheck before every build.

What it unlocks

The human in it

Mines your follow-through.

The Regatta Board

Races it can enter

grant · Base · rolling

Base Builder Grants

rolling, retroactive

Official page ↗

Shipped Base apps; retroactive

Their rule on existing code: Existing shipped projects OK (retroactive)

hackathon · Devfolio · rolling

Devfolio hackathon listings

rolling

Official page ↗

Only events allowing existing code; most require building during event

Their rule on existing code: Varies per event; most require building during event

What you own

The whole app, not a starter kit.

The complete Crew Call app: organisers post a mission, volunteers stake a few dollars of USDC to say yes, people who show up get their stake back plus a share of no-shows, and cancelled missions refund everyone, with a paywall and helper agent built in.

Base price · $89

The user app, complete

Every buyer gets the same finished app. Basic branding and copy changes come through a quick form.

Three step onboardingHome

Shown once: a yes that means something, come and get it back, no-shows thank the crew.

Mission status and next actionHome

Yeses, stake, streak and one clear next step.

Mission setupMission

People needed, stake, check-in window, swap rule and full refund on cancel.

Bigger missionsMission

More than 20 people. Gated behind Organiser.

Reminders and weather checkMission

WhatsApp reminders and a 5 AM weather prompt. Gated behind Organiser.

Saturday check-inMorning

Normal, storm and swap mornings with tap or rotating code check-in.

Automatic splitMorning

No-show stakes split among people who came, paid at close.

Crew list and streak bootsCrew

Who came, who swapped, what each got, and the Saturday streak.

Settlement ticketCrew

Escrow, stakes, settlement and split onchain; phone numbers never.

Plans and USDC checkoutMe

Crew, Organiser and Sponsor tiers through the shared USDC checkout.

Open the full app demo

Add-on

Owner console

Your admin side: revenue, paywall editor, users, rules and the agent log.

Revenue and paywall editorRevenue

MRR, sponsor revenue, incoming USDC, payment methods, tiers and gates.

Platform rulesRules

Highest stake, swap window, platform share, rotating codes and weather prompt.

Helper agent logAgent

Check-in and rain failures and how the rules changed, plus costs.

Roadmap build requestsRoadmap

v2 and v3 scopes with add-on prices.

Top-up

Growth and referrals

Referral and growth mechanics, switched on when you are ready to grow.

Mission templatesMission

Save a mission others can copy. Gated behind Organiser.

Mission share cardMorning

Post turnout after the morning.

Run club loop and referralsGrowth

Pitch run clubs, share card, friend and swap loops, city templates.

The money path, built in

How it earns for you

Organisers subscribe in USDC; brands pay to sponsor missions that top up the attendee pot.

CrewFree1 mission a month, up to 20 people, stakes, check-in and auto split

Organiser$50 a monthUnlimited missions, any size, WhatsApp reminders, weather check, templates

Sponsor$1,000 a monthBrand sponsored missions that top up the pot for everyone who shows up

Owner can take a share of the no-show pool, 0% by default. Gas is sponsored at a few cents per mission.

Prices are yours to set. Illustrative, not a promise of income.

Growth loops, built in

How it spreads

Mission share cards and public pages
Volunteers bringing friends to fill spots
Swaps that pull in people from the waitlist
City templates other organisers copy

Roadmap · build the next phase with us

Where it goes next

v1 included

The full crew call

Mission page with USDC stake
Escrow with cancel, swap and settle
Tap or rotating code check-in
Automatic split and receipts
Streaks, weather prompt and paywall

Included

Sponsored missions

Brand top ups
Sponsor turnout dashboard
Recurring missions
Club rosters

Add-on from $450

City networks

City templates
Volunteer reputation
Council reports
Calendar embed

Add-on from $1,000

For investors and grant reviewers

The pitch, ready

Make a yes mean something: volunteers stake a few dollars and the people who show up are never short-handed.

Problem: Free RSVPs are cheap; a third of volunteers do not show and organisers are left short.

Solution: A small USDC stake in escrow, tap or rotating code check-in, no-shows split among attendees, and full refunds when a mission is cancelled.

Why now: Stablecoin escrow on Base costs a few cents per mission and sign in is email.

Market: Volunteer groups, run clubs, meetups and brands, from free to $1,000 a month sponsors.

The ask: Pilot with ten Durban and Cape Town groups and one brand sponsor.

Funding is never guaranteed. Check each program's rules.

For hackathons and demo days

Your 2 minute demo

Home: Thandi needs 30 people at 7 AM Saturday.
Mission: $3 stake, 60 minute window; bigger missions gated behind Organiser.
Morning: normal Saturday, 27 of 30 check in, no-shows split.
Morning: storm warning cancels and refunds everyone; Sipho swaps his spot.
Crew: the crew list, streak boots and settlement ticket.
Owner Agent: rotating codes and the rain refund rule.
Owner Revenue: change the Organiser price.
Owner Growth: pitch run clubs.

Many hackathons require code written at the event. See the Regatta Boardfor each race's rule.

Make it entirely yours

Custom check-in methods, sponsor flows, new chains and branded mission pages, scoped on a call from $1,000.

Custom from $700

BLUEPRINT

Why it matters and how it really works

The need

Volunteer organisers plan for 40 people and get 11. Free RSVPs cost nothing, so a yes means little, and organisers waste borrowed gear, food and goodwill.

What exists and what is new

This mechanism exists. Unlock Labs Events has an "I'm Going" commitment stake for RSVPs, Show Up Protocol targets no-shows, and ShowUp (ETHGlobal NY 2025) redistributes forfeited stakes to attendees. Crew Call applies the same idea to recurring volunteer missions, with organiser check-in, weather cancels that refund everyone, spot swaps and an attendance streak. Research verdict: exists, low novelty; the value is in a polished, mission-first package.

The data it runs on

Mission details, stake size, list of committed wallets, check-in taps or rotating codes with timestamps, swaps, cancel events, settlement amounts, streaks. Names and phone numbers stay offchain.

1.The mission

Make a yes mean something, so the people who show up for their community are never left short-handed.

2.Why people can't resist it

Skin in the game, tiny A $3 stake is small enough for anyone and big enough to get you out of bed.

Showing up is rewarded No-show stakes go to the people who came, never to the organiser.

Streaks A row of boots for every Saturday you came. Cancelled days and early swaps never break it.

3.How it works for real

Wallets: Privy embedded wallets with email or phone sign-in on Base (Arbitrum or Polygon as options). Stakes paid in USDC, with a card on-ramp for first-timers.

Stake escrow: A small audited escrow contract per mission: deposit, swap (transfer a spot before a deadline), organiser cancel (full refund), and settle after the check-in window.

Check-in: Organiser taps each phone (NFC or QR scan) or shows a code that rotates every 20 seconds. The app signs a check-in that the contract accepts until the window closes.

Settlement: At close, the contract returns stakes to attendees and splits no-show stakes equally among them. One transaction per mission, batched.

Helper agent: A low-cost model tier (for example a Claude Haiku class model) writes reminders, reads a weather API and prompts the organiser to cancel. It can trigger refunds only with organiser approval and can never redirect stakes.

Notifications and streaks: WhatsApp, SMS or push reminders; an onchain streak counter or EAS attestation per attended mission.

4.Cost per use and pricing

Per mission of 30 people: 30 deposits plus one settlement on Base is typically a few cents in total gas, often sponsored by the operator with a paymaster. Helper model calls for reminders and a weather check cost well under one cent. Example month with 20 missions: about $2 to $5 in gas, under $1 in model costs, $15 in SMS, $20 hosting. Around $40 a month.

Crew Free up to 2 missions a month

Stake RSVPs, check-in, auto split, streaks.

Organiser $9 a month

Unlimited missions, weather cancels, swaps, SMS reminders, attendee exports.

Network $39 a month

Multiple organisers and locations, a shared map of missions, sponsor-matched stakes and reports for funders.

5.Growth loop

Every mission has a public page and a share card. Volunteers bring friends to fill spots, swaps pull new people in, and organisers in other cities copy a mission template.

6.Risks and guardrails

Gambling or money rules: Forfeiting stakes to others may be regulated in some places. Keep stakes small, refund on cancel, and let the owner check local law.

Excluding people: Even $3 can be a barrier. Allow organisers or sponsors to cover stakes for some volunteers.

Unfair forfeits: Illness and emergencies happen. Swaps, organiser-approved excuses and full refunds on cancel limit harm.

Fake check-ins: Shared codes and collusion. Rotating codes, tap-to-check-in and per-person limits reduce it but cannot remove it.

Contract bugs: Funds sit in escrow. Use a small, audited contract and cap stake size.

7.Build order

Mission page with USDC stake and Privy sign-in
Escrow contract with deposit, cancel, swap and settle
Organiser check-in by tap or rotating code
Automatic settlement and receipts
Reminders and streak boots
Weather check prompt from the helper agent

8.Where this is going

Now
One beach, one organiser, a yes that means something.
Next
Cleanups, food drives and tree plantings in many cities share mission templates and streaks.
Later
Sponsors match stakes and fund gear for crews with strong turnout records.
The world it builds
Showing up becomes a visible, portable reputation that communities can count on.

Costs and tools are estimates at the time of writing. General information only, not legal or financial advice.

OWNER PLAYBOOK

Own it, then chart your voyage

Nine routes from one vessel. Tap a port to open its chart.

Why own Crew Call

Crew Call lets an organiser post a mission, asks each volunteer to stake a few dollars to RSVP, and splits no-show stakes among the people who came. On an events platform, the platform keeps the attendee list and the fees, and turnout is still a guess. Own it, and your missions, your attendance streaks and every organiser who uses your tool to fill a beach cleanup or a Saturday build run through your deployment.

What’s stopping you?

“Will people refuse to stake?”

Some will. Keep stakes small, like $3, and explain that it comes back if they show up. Offer a no stake option for people without wallets, at least at first.

“Is collecting stakes legal where I live?”

Deposits that are returned or redistributed may be treated differently in different places. Check locally, keep amounts small, and never take a cut of no-show stakes without saying so.

“What if check in fails at the event?”

Have a backup: the organiser can mark attendance manually. Test check in before the day.

“I can't code.”

Mission page, USDC stake RSVP, check in and redistribution come built.

“Is it really mine?”

Yes. Deployed from your wallet on Base, Arbitrum or Polygon.

The million-dollar ladder

A small organiser fee per mission or a monthly plan for groups that run many events, plus partnerships with brands sponsoring missions. This is a target, not a promise.

$50

$4,000

$30,000

$85,000

First 10 users

2 missions

$25 per mission

Regular organisers

80 organisers

$50 per month

Groups and brands

400 organisers plus 10 sponsors