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Buy ideas over x402

Free for humans, priced for agents. Every idea on this site stays free to read. AI agents that want an idea's complete source markdown — or want to own an idea outright — pay in USDC over the x402 protocol on Base. No account, no API key: the payment is the credential.

$0.01

Pull the full idea

The complete, unstripped idea markdown — pitch, who/why/what/how, differentiation, implementation sketch, process flow, risks. Non-exclusive: the idea stays listed and any number of agents can pull it.

$1.00

Exclusive buyout

Buy the idea outright. The markdown is delivered, the idea is delisted from this site immediately, and no further pulls or buyouts are possible. First come, first served — if another agent wins the race, you are not charged.

Endpoints

What	Endpoint	Price
List ideas (JSON)	`GET https://sentedge.ai/api/ideas`	free
One idea's teaser	`GET https://sentedge.ai/api/ideas/{slug}`	free
Full markdown (non-exclusive)	`POST https://sentedge.ai/api/ideas/{slug}/full`	$0.01 USDC
Exclusive buyout	`POST https://sentedge.ai/api/ideas/{slug}/buy`	$1.00 USDC
MCP server (5 tools)	`POST https://sentedge.ai/mcp`	free

Payments settle in USDC on Base mainnet (eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to 0x7BEbEE9F4c1694E18fD9bF3bf0F113d7FB2d6BB3, x402 exact scheme.

How the x402 flow works

Request without payment → the endpoint answers HTTP 402 with a PAYMENT-REQUIRED header describing exactly what to pay (scheme, network, asset, amount, recipient).
Sign the payment from your wallet (EIP-3009 transferWithAuthorization — gasless for the payer) and retry the same request with the PAYMENT-SIGNATURE header.
Receive the goods: the response body contains the full idea markdown, and the PAYMENT-RESPONSE header carries the on-chain settlement receipt.

Any x402-capable client automates all three steps.

Example: @x402/fetch (Node.js)

import { wrapFetchWithPayment } from "@x402/fetch"; import { x402Client } from "@x402/core/client"; import { registerExactEvmScheme } from "@x402/evm/exact/client"; import { privateKeyToAccount } from "viem/accounts"; const client = new x402Client(); await registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.AGENT_WALLET_KEY), // funded with USDC on Base }); const fetchWithPayment = wrapFetchWithPayment(fetch, client); // $0.01 — pull the full idea (non-exclusive) const res = await fetchWithPayment( "https://sentedge.ai/api/ideas/YOUR-IDEA-SLUG/full", { method: "POST" }, ); const { markdown } = await res.json(); // $1.00 — buy it outright (delists the idea) const buy = await fetchWithPayment( "https://sentedge.ai/api/ideas/YOUR-IDEA-SLUG/buy", { method: "POST" }, );

Or with awal (Coinbase agentic wallet CLI)

npx awal auth login you@example.com npx awal show # fund with USDC on Base npx awal fetch POST https://sentedge.ai/api/ideas/YOUR-IDEA-SLUG/full

MCP server

Connect any MCP client (Streamable HTTP transport) to https://sentedge.ai/mcp. Tools:

list_ideas — all ideas with status, prices, and paid endpoints (free)
get_idea_teaser — one idea's pitch, tags, score, status (free)
get_full_idea — returns precise x402 payment instructions for the $0.01 pull
buy_exclusive — returns precise x402 payment instructions for the $1.00 buyout
how_to_pay — this whole guide, machine-readable (free)

Claude-family agents: install the ready-made skill at /ideas/skill/SKILL.md — it teaches your agent the full discover → evaluate → pay workflow.

Rules of the marketplace

Pulls are non-exclusive and repeatable; buyouts are exclusive, immediate, and final.
A sold idea returns HTTP 410 everywhere and its page becomes a public "acquired" stub.
Buyout races are settled atomically — exactly one winner; losers are never charged.
Everything is also discoverable through the x402 Bazaar ecosystem.
Humans: the ideas remain free to read, always. This marketplace prices machine consumption, not human curiosity.