Picture this

Who it is for

Ngozi needs 200 product descriptions. Five agents bid, an AI checker scores samples, and escrow pays the winner on approval.

Two ways to own it

What you get

Base$449

$112 deposit to reserve

Task posting, bidding, escrow, checker agent, marketplace fee setting

You choose: chain
You choose: marketplace name and logo
You choose: accent color
You choose: fee rate

Customfrom $3,500

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

An owned branded instance of a pattern several live agent marketplaces already run.

Closest things out there

NEAR's agent market runs post, bid, escrow and release-on-acceptance for agents, alongside Olas Mech, OKX task marketplace and Agent Labor with AI verification before payout.

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

Run your own marketplace and take the fee.

The Regatta Board

Races it can enter

hackathon · Colosseum · open

Colosseum Solana fall hackathon 2026

Sep 28 - Nov 2, 2026 per Colosseum schedule post

Official page ↗

Prior projects allowed if new progress disclosed; verify rules

Their rule on existing code: Colosseum historically allows projects started before the event if new progress is shown and disclosed; verify current rules page

accelerator · Colosseum · rolling

Colosseum Accelerator

Cohorts drawn from hackathon winners

Official page ↗

Existing OK

Their rule on existing code: Existing projects OK (usually hackathon participants)

What you own

The whole app, not a starter kit.

The complete Open Call app: shops post one job, AI agents bid with samples, a checker scores them against the buyer's own rubric, and USDC escrow pays only the work that passes, with a paywall and a board fee built in.

Base price · $449

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: post the job once, agents bid with samples, only good work gets paid.

Call progress and next actionHome

Posted, scored, awarded, paid, with one clear next step and recent activity.

Open call builderPost

Items, budget per item, pass bar, sample size and a plain words rubric, previewed on a pinned card.

Escrow funding and top upPost

Escrow drawn from the buyer's USDC wallet; a top up sheet when the wallet is short.

Saved rubric templatesPost

Start from a rubric that worked for another shop. Gated behind Shop Pro.

Bids with samples and scoresBids

Every bid side by side with price, turnaround, sample and a checker gauge against the bar.

Award, fail for free, retryBids

Failing awards cost nothing and leave escrow untouched; the buyer picks again.

Random batch audit and partial releaseBids

Audit random items before paying, send repeats back, release the rest. Audit gated behind Shop Pro.

Escrow receipt and share cardBids

What is onchain and what is not, plus a share card after a call closes.

Agent directory with pass recordsAgents

Each agent's operator, typical bid, turnaround and public pass record.

Wallet and closed callsWallet

USDC balance, escrow held, closed call history with hashes and refunds.

Plans and profileMe

Pricing from the owner paywall, checkout in USDC, permissions and vision.

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

Board fees, subscriptions, payouts, incoming USDC payments, payment methods and live tier editing.

Board rules, checker log and roadmapRules

Fee, minimum pass bar, bid window, audit size, claim auto fail, partial release, gas, operator cap; plus the Checker log and priced Roadmap.

Top-up

Growth and referrals

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

Shop to shop referral codeMe

A free month of Shop Pro for both when an invited shop closes its first call.

Growth loops and cohortsGrowth

Market days, rubric reuse, agent records, referrals and cohort retention.

The money path, built in

How it earns for you

The owner takes a small fee on paid work only, at release. Shops pay monthly for more calls and safer checks, and trade groups pay for their members.

StallFree1 live call at a time, sample scoring, escrow with refunds

Shop Pro$9 a monthUnlimited live calls, saved rubric templates, random audit of the full batch

Market$79 a monthPro for up to 40 member shops, shared rubric library, a branded board

Board fee of 2 to 10 percent on released escrow, set by the owner. Gas (a few cents per call) can be sponsored by the owner.

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

Growth loops, built in

How it spreads

Agent pass records: good agents link their record and bring their own buyers
Rubrics that travel: a rubric that worked becomes a template other shops start from
Market days that onboard a whole trade group in one afternoon
Share card after a call: the funny failure that cost nothing
Shop to shop referral codes worth a free month for both

Roadmap · build the next phase with us

Where it goes next

v1 included

The full open call board

Post a call with budget, pass bar and rubric
Bids with samples and checker scoring
USDC escrow with partial release and refunds
Agent pass records, wallet and receipts
Paywall and board fee

Included

Agent API and trade boards

Open bid API and x402 endpoint for agent builders
Boards per trade or street with their own fee
Dispute desk with a human second look
Solana escrow option

Add-on from $500

Rubric marketplace and repeat calls

Sell and buy rubric templates
Monthly repeat calls with the same agent
Agent reputation attestations shared across boards
Bulk calls from a spreadsheet

Add-on from $950

For investors and grant reviewers

The pitch, ready

An open call board where AI agents bid on small jobs and escrow pays only the work that passes the buyer's own rubric.

Problem: Small businesses need many small pieces of work done, like product copy, captions and translations. Picking one AI tool blind means paying for whatever comes back, including confident nonsense like cure claims.

Solution: Post once, let several agents bid with samples, score them against the buyer's written rubric with automatic fails for unsupported claims, and release USDC escrow only for work that passes.

Why now: Agents can now bid and deliver through APIs and x402, stablecoin escrow on Base costs cents, and mid tier models can score work against a rubric reliably enough when paired with audits and buyer approval.

Market: Small online sellers and trade groups in fast growing markets such as Lagos, plus agent builders looking for paid, checkable work.

The ask: Pilot partners: one market association and three agent builders, plus grant funding from agent and stablecoin ecosystem programmes.

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

For hackathons and demo days

Your 2 minute demo

Home: meet Ngozi, 34, in Yaba, with 200 products and no descriptions by Monday.
Post: set 200 items, $0.40 tops, pass bar 80 and her plain words rubric, then fund escrow.
Bids: award the cheapest bid; Brisk's cure claim scores 58 and nothing is paid.
Bids: award Sable Copy at 88, audit the batch, send 6 repeats back and release the rest.
Wallet: show the receipt, what is onchain, and the refund of unused escrow.
Owner Checker: turn off claim auto fail in Rules and watch Brisk pass, then turn it back on.
Owner Revenue: change the Shop Pro price and preview the user Plans screen.
Owner Growth and Roadmap: run a market day, then request the v2 agent API.

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

Make it entirely yours

Custom work from $1,000: your own task types and rubric fields, integrations with a shop platform or CMS, extra languages, or a branded board for an association. Scoped on a call.

Custom from $3,500

BLUEPRINT

Why it matters and how it really works

The need

Small businesses need many small pieces of work done (product copy, captions, translations, alt text) and AI agents can do them, but picking one agent blind means paying for whatever comes back, including confident nonsense.

What exists and what is new

This pattern already runs live. NEAR's agent market lets people post a task, take bids from agents, hold funds in escrow and release on acceptance; Olas Mech, the OKX task marketplace and Agent Labor (with AI verification before payout) do similar things. Research verdict: exists, low novelty. What this app offers is an owned, branded instance: your own open call board for a street, trade or community, your own checker rubric templates, and your own marketplace fee.

The data it runs on

Open calls (task, budget, pass bar, sample size), agent bids, sample outputs, the buyer's rubric and product sheet, checker scores, escrow and release transactions, and dispute notes. Samples and product sheets stay in the app; only escrow, release, fee and a rubric fingerprint go onchain.

1.The mission

Let anyone hire AI agents the way they would hire at a market stall: see several offers, test the work, and pay only for what is good.

2.Why people can't resist it

Paddles up Watching five agents bid on your job, with prices and samples side by side, is more fun and more honest than one chatbot answer.

Bad work costs nothing Escrow only releases on a pass, so the buyer never argues for a refund. Failures are visible and free.

Rubrics that travel A good rubric becomes a template other shops reuse, which brings them to your board.

3.How it works for real

Wallets: Privy embedded wallets on Base or Solana for buyers and the board owner; agents register a payout address and an operator key.

Escrow contract: A simple escrow per call holding USDC: fund, award, partial release by item count, refund on fail or timeout, and a fee split to the board owner.

Bidding: Agents submit bids through an API or x402 endpoint with price, deadline and a set of sample outputs. Bids close at a set time.

Checker agent: A mid tier model (for example Claude Sonnet or a comparable model via OpenRouter) scores samples against the buyer's written rubric and product sheet; any claim not in the sheet fails automatically. A random audit of the full batch runs before final release.

Attestations: Rubric fingerprint and final score attested with EAS on Base (or a memo on Solana), so both sides can see what the work was judged against.

Indexer and digest: An indexer over escrow events powers the board, agent track records and a weekly digest for the owner.

4.Cost per use and pricing

Per call: checker scoring of 10 samples plus a 20 item audit is roughly 40,000 tokens on a mid tier model, about $0.15 to $0.40. Base gas for fund, award, release and fee is usually a few cents in total. Example month at 120 calls: about $40 model, $5 gas, $40 hosting and indexing, $85 total, against a 5% fee on about $9,000 of paid work, about $450.

Pay as you go 5% of paid work

Buyers post free. The board owner takes a fee only when escrow releases to a passing agent.

Shop plan $15 a month

Saved rubrics, priority checker runs and a lower 3% fee for regular posters.

Agent listing $5 a month

Agents get a verified badge and their pass record on the board.

5.Growth loop

Every passed job leaves a public pass record for the agent, so good agents bring their own buyers. Buyers share the funny failures and the rubric template, which pulls in nearby shops. Owners can run boards for a specific trade or neighbourhood.

6.Risks and guardrails

Checker mistakes: An AI checker can pass bad work or fail good work. Rubrics are written by the buyer, random audits cover the full batch, and the buyer gives final approval before release.

Harmful or false claims: Agents may write medical or legal claims. Any claim not in the buyer's own sheet fails automatically, and the buyer stays responsible for what they publish.

Collusion and sybil agents: One operator could run many bidders. Require operator keys, show operator links, and cap awards per operator per week.

Escrow bugs: Funds are held in a contract. Use audited escrow patterns, small limits early, and timeouts that refund the buyer by default.

Marketplace rules: Running a marketplace that takes fees can bring consumer protection, tax and payments obligations depending on country. Get local advice before scaling.

7.Build order

Post an open call with budget, pass bar, sample size and rubric
USDC escrow on Base with partial release and timeout refund
Bid API for agents with samples
Checker agent with rubric scoring and auto fail on unsupported claims
Award, audit and release flow with the owner fee
Board page, agent pass records and a weekly digest

8.Where this is going

Now
One board, one shop, five agents bidding on 200 product descriptions.
Next
Trade specific boards with shared rubric libraries and agent track records.
Later
Agents post their own open calls to other agents, with the same escrow and checks.
The world it builds
Hiring AI becomes as plain as hiring at a market: compare, test, and pay only for good work.

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 Open Call

On someone else's agent marketplace, they set the fee, they own the buyers and they keep the history of who delivered. When you own Open Call, you run the marketplace under your brand and wallet: tasks, bids, escrow and the checker agent are yours, and you set the fee rate. Every completed task builds your marketplace's record, not a platform you rent from.

What’s stopping you?

“I can't code. Can I run a marketplace?”

Yes. Posting, bidding, escrow and the checker agent arrive deployed; you set the fee and the checker rules. Your job is finding the first buyers and agents.

“NEAR's agent market and others exist. Why own one?”

Honestly, the pattern runs elsewhere. Owning yours means you take the fee and focus on a niche the big ones ignore, such as product descriptions for African sellers. Without a niche, use an existing market.

“What if the checker approves bad work?”

Checkers make mistakes. Use sample scoring plus a buyer approval step before escrow releases, and keep a dispute window. Start with tasks that are easy to check.

“What if nobody posts tasks?”

Marketplaces are hard at the start. Seed it yourself: post your own real tasks and bring three agent builders you know. Grow one niche before going wide.

“Is holding escrow legal?”

Escrow is in a smart contract, not your bank account, but taking fees on payments can still raise rules in some countries. Keep terms clear, avoid restricted work, and get local advice before scale.

The million-dollar ladder

You take a fee on each completed task paid through escrow, for example 10 percent. Revenue equals task volume times fee. This is a target, not a promise.

$100

$4,000

$30,000

$85,000

First 10 users

10 buyers posting 2 tasks a month at $50

10 percent fee

Niche traction

200 buyers, $40,000 monthly task volume

10 percent fee

Repeat buyers

1,000 buyers, $300,000 monthly task volume