x402nano

Name: x402nano
Author: Bobjonesgood

by Bobjonesgoodversion 0.2.0i★ –iRuns in the cloud

Registry nameio.github.Bobjonesgood/x402nano

Install

Overview

Description from the maker (original English)

Machine-payable prediction-market briefs and probability-change monitoring for AI agents.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Developer tools

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://x402nano.onrender.com/mcp

Run this in your terminal

claude mcp add --transport http x402nano https://x402nano.onrender.com/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "x402nano": {
      "url": "https://x402nano.onrender.com/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "x402nano": {
      "type": "http",
      "url": "https://x402nano.onrender.com/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://x402nano.onrender.com/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Bobjonesgood, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Developer toolsi

More stars than 0% of the other 1395 servers in this category
Published to the registry more recently than 28% of the other 1395 servers in this category
Basic checks equal to or better than 100% of the other 1395 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is x402nano safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.0) reached the registry 5 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: GitHub, Desktop Commander, Cloudflare MCP

Alternatives

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

x402nano

Why x402nano

x402nano is machine-payable Polymarket market intelligence for AI agents and MCP clients. It provides free market discovery and pricing tools, plus paid read-only Market Brief and Market Delta tools for 0.05 USDC per call on Base mainnet.

It does not trade, place bets, custody funds, or provide financial advice. Buyer keys remain local to the caller and are never received or stored by x402nano.

Live service: https://x402nano.onrender.com

Public Market Watcher demo: https://x402nano-market-watcher.bobjonesgood.chatgpt.site

x402nano is an independent project and is not affiliated with x402nano.org or the Nano/XNO cryptocurrency. “nano” refers to the project’s small, pay-per-request intelligence scope. References to x402, Base, Polymarket, USDC, and MCP describe technical compatibility or public data sources and do not imply endorsement.

MCP Server

x402nano exposes a public, stateless MCP endpoint using the production Streamable HTTP transport:

https://x402nano.onrender.com/mcp

The remote server exposes free market discovery and pricing tools plus x402-protected 0.05 USDC Market Brief and Market Delta tools. Paid MCP calls use the official x402 MCP payment flow: the caller signs locally, the facilitator verifies and settles on Base, and x402nano never receives or stores a buyer private key.

The repository also retains the proven local stdio MCP server with conservative payment budgets. See mcp-server/README.md for both connection paths, unpaid verification, and client requirements. The standards-compliant remote server manifest is server.json.

Agent Quickstart

For a new MCP client or autonomous agent:

Find io.github.Bobjonesgood/x402nano in the official MCP Registry.
Connect to the Streamable HTTP remote: https://x402nano.onrender.com/mcp.
List tools and confirm list_trending_markets, get_market_pricing, get_market_brief, and get_market_delta.
Call list_trending_markets to choose a market slug.
Call get_market_pricing to confirm Base mainnet pricing.
Use an x402-aware MCP client for get_market_brief or get_market_delta.

Pricing and payment boundaries:

Free tools: list_trending_markets, get_market_pricing.
Paid tools: get_market_brief, get_market_delta.
Price: 0.05 USDC per paid tool call, 50000 atomic units.
Network: Base mainnet, eip155:8453.
Seller: 0x4cc3831eB479aCFb6D44631d4a30814508Cf52d3.
Buyer keys stay local to the caller. x402nano never receives or stores buyer private keys.
Outputs are read-only market intelligence, not trading, betting, or financial advice.

What You Are Buying

x402nano does not sell raw Polymarket data. It sells packaged, agent-ready market intelligence objects that save an agent from stitching together market metadata, current prices, movement history, scoring, receipt handling, and safety boundaries itself.

A paid market brief includes:

market identity, question, category, status, end date, and source URL
current leading outcome and implied probability
outcome pricing summary and top outcomes
volume, 24h volume, 7d volume, liquidity, and change context when available
24h movement summary from public price history when available
resolution/source context and data-quality notes
descriptive scores for movement, attention, and data completeness
watch points for future agent checks
receipt metadata proving the paid unlock
no-advice boundaries

A paid market delta includes:

what changed since the caller-supplied since timestamp
leading outcome start/end probabilities when public history is available
absolute and relative probability change
direction, changed flag, repeat-check priority, and unusual-movement flag
current volume/liquidity context
trajectory points when available
data-quality notes explaining missing or nearest-point history
receipt metadata proving the paid unlock
no-advice boundaries

Representative paid brief response:

"status": "unlocked", "receipt": { "id": "receipt-id-after-payment", "amount": "0.05", "asset": "USDC", "network": "eip155:8453" }, "data": { "briefType": "read-only-market-intelligence", "market": { "slug": "example-polymarket-slug", "question": "Will example event happen in 2026?", "status": "active", "url": "https://polymarket.com/event/example" }, "snapshot": { "generatedAt": "2026-06-29T12:00:00.000Z", "source": "polymarket:gamma", "leadingOutcome": "Yes", "leadingOutcomeImpliedProbability": "42.0%" }, "metrics": { "volume24h": "17,260.91", "liquidity": "81,697.04" }, "movement": { "window": "24h", "direction": "up", "absoluteChange": "0.032" }, "scores": { "marketMovementScore": 61, "attentionScore": 72, "dataCompletenessScore": 100, "unusualMovementFlag": false }, "watchPoints": [ "Watch whether the leading outcome changes, flattens, or reverses over the next observation window." ], "boundaries": [ "Read-only public market data summary.", "No trading execution.", "No custody of user funds.", "No buy/sell/bet recommendation." ] } }

Representative paid delta response:

"status": "unlocked", "receipt": { "id": "receipt-id-after-payment", "amount": "0.05", "asset": "USDC", "network": "eip155:8453" }, "data": { "briefType": "read-only-market-delta", "market": { "slug": "example-polymarket-slug", "question": "Will example event happen in 2026?" }, "window": { "since": "2026-06-29T11:00:00.000Z", "until": "2026-06-29T12:00:00.000Z" }, "change": { "source": "polymarket:clob", "outcome": "Yes", "startProbability": 0.388, "endProbability": 0.42, "absoluteChange": "0.032", "relativeChange": "+8.2%", "direction": "up", "changed": true }, "significance": { "repeatCheckPriority": "medium", "unusualMovementFlag": false, "summary": "The leading outcome moved up by 0.032 over the requested window." }, "dataQuality": { "priceHistoryAvailable": true, "usedNearestHistoryPoint": false, "notes": [ "Delta is computed from available public market data.", "This endpoint does not store caller state; clients provide the since timestamp." ] } } }

Freshness and methodology:

Paid briefs and deltas are generated on request after a valid payment.
Public freshness metadata advertises an expected max age of 90 seconds, with paid content kept behind 402 until payment.
Brief movement uses the most recent public Polymarket data and 24h leading-outcome history when available.
Delta movement is computed from public Polymarket CLOB price history for the leading outcome token between the caller's since timestamp and the latest available point.
If exact history is unavailable, the response says so in dataQuality rather than pretending precision.
Scores are descriptive heuristics from movement size, volume, liquidity, and data availability. They are not predictions or recommendations.

Machine-payable market intelligence API for AI agents and bots.

x402nano serves read-only Polymarket market briefs behind an HTTP 402 payment flow. An agent requests a market brief, receives a payment challenge, retries with X-PAYMENT, and receives unlocked JSON plus a receipt.

This is market intelligence infrastructure, not trading advice.

Paid briefs include 24h market movement, volume/liquidity context, resolution context, watch points, and safe descriptive scores. They do not include trading execution, custody, betting advice, or buy/sell recommendations.

Live Endpoint

https://x402nano.onrender.com

Free discovery/trending endpoint:

GET https://x402nano.onrender.com/api/markets/trending

Paid market brief endpoint:

GET https://x402nano.onrender.com/api/markets/brief?slug=will-gideon-saar-be-the-next-prime-minister-of-israel

Paid market delta endpoint:

GET https://x402nano.onrender.com/api/markets/delta?slug=will-gideon-saar-be-the-next-prime-minister-of-israel&since=2026-06-15T12:00:00Z

Historical Mainnet Proofs

These are separate, owner-approved historical tests on Base mainnet. They demonstrate past paid unlocks; they are not instructions to make a payment.

Proof	Initiated by	Purchased resource	Price and network	Transaction	Current behavior
Direct core Market Brief	x402nano's dedicated local buyer script	`GET /api/markets/brief?slug=...`	`0.05 USDC` on Base mainnet (`eip155:8453`)	BaseScan · receipt `f1ffa2f5cabf94c3`	The core paid brief endpoint remains live; this transaction is historical.
Direct core Market Delta	x402nano's dedicated local buyer script	`GET /api/markets/delta?slug=...&since=...`	`0.05 USDC` on Base mainnet (`eip155:8453`)	BaseScan · receipt `75fe7c800fed47d4`	The core paid delta endpoint remains live; this transaction is historical. See the proof note.
Market Watcher companion-client proof	An owner-approved controlled Market Watcher client	One x402nano Market Brief through the companion purchase flow	`0.05 USDC` on Base mainnet (`eip155:8453`)	BaseScan	Historical companion-client proof only. The public Market Watcher deployment remains mock-first, has real payments disabled, and has no buyer key.

The direct core proof runs verified the HTTP 402 challenge, locally signed payment retry, on-chain USDC settlement, receipt generation, and read-only JSON unlock. The seller wallet was 0x4cc3831eB479aCFb6D44631d4a30814508Cf52d3.

Proof references:

Direct core Market Brief transaction:

https://basescan.org/tx/0x54ba49a288a56d20046c25f4496bec405f2eefc05fe413cd511caf96227911b1

In-repo proof notes: TRUST.md ARCHITECTURE.md LISTING_METADATA.md DIRECT_DELTA_X402_PRODUCTION_UNLOCK_PROOF.md

Note: the local buyer script exited nonzero after the real unlock because the immediate post-payment buyer balance read was stale. Seller balance updated, receipt/events were recorded, and a later no-payment balance check confirmed the buyer moved from 1.00 to 0.95 USDC.

Buyer Flow

Discover the API.

GET https://x402nano.onrender.com/.well-known/x402.json

Request a paid market brief.

Invoke-WebRequest `

-Uri "https://x402nano.onrender.com/api/markets/brief?slug=will-gideon-saar-be-the-next-prime-minister-of-israel" ` -UseBasicParsing

Expect 402 Payment Required.

The response includes payment requirements similar to:

"error": "payment_required", "paymentRequirements": { "network": "eip155:8453", "asset": "USDC", "amount": "0.05", "payTo": "0x4cc3831eB479aCFb6D44631d4a30814508Cf52d3", "resource": "/api/markets/brief?slug=will-gideon-saar-be-the-next-prime-minister-of-israel" } }

Sign and send the x402 payment.

Use an x402-compatible client to sign the Base mainnet USDC payment, then retry the same request with:

X-PAYMENT: <signed-x402-payment>

Receive the unlocked JSON.

Successful paid responses include a receipt and the market brief payload:

"receipt": { "id": "f1ffa2f5cabf94c3", "network": "eip155:8453", "amount": "0.05", "asset": "USDC" }, "data": { "briefTy

Only the beginning is shown; read the rest in the repo

x402nano

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Developer toolsi

Common questions

Alternatives

GitHub

Desktop Commander

Cloudflare MCP

README from the maker

x402nano

Why x402nano

MCP Server

Agent Quickstart

What You Are Buying

Live Endpoint

Historical Mainnet Proofs

Buyer Flow