$2
per call · USD Coin on Base
Deep red-team a product or technical proposal before a consequential investment. Uses a larger reasoning budget to test counter-theses, hidden dependencies, supplied economics, and decisive unknowns. Typical completion time is ~2-3 minutes. Clients should allow up to 4 minutes before timing out.
Endpoint
POST https://launchcheck-x402.fly.dev/v1/proposal-check/deep6
Calls / 30d
1
Unique payers / 30d
Aug 19
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://launchcheck-x402.fly.dev/v1/proposal-check/deep", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"constraints": [],
"desiredDecision": "Decide whether the next bounded investment is justified.",
"proposal": "Build a bounded paid API, validate the decisive dependency first, measure cost and repeat demand, and stop if the gate fails.",
"proposalType": "api-service"
}),
});
const data = await res.json();curl -X POST \
"https://launchcheck-x402.fly.dev/v1/proposal-check/deep" \
-H "Content-Type: application/json" \
-d '{"constraints":[],"desiredDecision":"Decide whether the next bounded investment is justified.","proposal":"Build a bounded paid API, validate the decisive dependency first, measure cost and repeat demand, and stop if the gate fails.","proposalType":"api-service"}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"meta": {
"cached": false,
"engine": "openai-compatible",
"generatedAt": "2026-08-17T16:00:00.000Z",
"model": "openai/gpt-5.6-sol"
},
"report": {
"assumptions": [],
"coreThesis": "Earn the build with cheaper evidence first.",
"differentiationAssessment": {
"keyQuestion": null,
"rating": "credible",
"summary": "The thesis may be differentiated if the dependency holds."
},
"economicsAssessment": {
"keyQuestion": null,
"rating": "unclear",
"summary": "Measure actual cost before scaling."
},
"executiveSummary": "Validate the decisive dependency before implementation.",
"feasibilityAssessment": {
"keyQuestion": null,
"rating": "credible",
"summary": "A bounded validation step is feasible."
},
"inputIntegrity": {
"evidence": [],
"status": "clean"
},
"killCriteria": [],
"optionalImprovements": [],
"recommendation": "Revise around one decisive validation gate.",
"recommendedBuildSequence": [],
"requiredChanges": [
"Run the dependency gate."
],
"risks": [],
"scopeCuts": [],
"score": 76,
"strengths": [],
"validationPlan": [],
"verdict": "revise"
},
"requestId": "deep-example"
}Payment details
0x87f929c4ecac1556a507ce6b92ef95c52b28dba4USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Developer Tools and the homepage with a featured placement.
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