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Idea-Fit Checklist

The same 8 questions I ran my own x402 endpoint idea through before building it. Answer honestly — the point is to trust the number over the enthusiasm.

01 / EXISTING ASSET

Do you already have data or API access you could gate, rather than building it from scratch?

Yes, it exists today Partly — some assembly needed No, starting from zero

02 / CALL-LEVEL VALUE

Is a single call worth something on its own, not just a subscription bundle?

Yes, clearly Maybe, needs testing Not really

03 / MACHINE BUYER

Is the buyer an agent or script, not a human clicking a checkout button?

Yes, agent-native Could go either way Human-only today

04 / FRESHNESS

Does the answer change often enough that caching yesterday's response wouldn't work?

Changes intraday+ Changes daily Mostly static

05 / VERIFICATION COST

Can a buyer tell the response was worth paying for without a human reviewing it?

Yes, self-evident Somewhat Needs review

06 / DISCOVERY FIT

Can it be described in a machine-readable manifest — clear inputs and outputs, no prose required?

Yes, cleanly Mostly Hard to specify

07 / RIGHTS

Do you actually have the rights to sell access to this — no scraped or licensed-only data underneath?

Clean, it's mine Need to check Likely a problem

08 / BUILDABLE

Could a v1 payment-gated endpoint realistically ship in under a week?

Yes, this week A couple weeks Much longer

–

out of 16

Where it's strong, where it's weak

Take the kit from here

Tier 1

Endpoint Starter Kit

The build-brief, x402 manifest template, and payment-boundary checklist I used to ship mine.

$49

Tier 2

Complete Bundle

Everything in the Starter Kit, plus the distribution order I actually used and the manual gotchas nobody documents.

$99 founding

Your $49 always counts toward the $99 Bundle — upgrade later, never re-pay. Card or USDC on Base.

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