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ProposalCheck Premium · Proposal Check Deep

by ProposalCheck Premium

POSTBase

$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/deep

6

Calls / 30d

1

Unique payers / 30d

Aug 19

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
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
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

Pay to0x87f929c4ecac1556a507ce6b92ef95c52b28dba4
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase
Schemesexact

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