Gexno Web3

Name: Gexno Web3
Author: JanzenChen

by JanzenChenversion 0.1.3i★ –iRuns in the cloud

Registry nameio.github.JanzenChen/gexno-web3

Install

Overview

Description from the maker (original English)

Free Ethereum wallet profile & NFT metadata MCP tools (no signup).

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: Other

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://api.gexno.com/mcp

Run this in your terminal

claude mcp add --transport http gexno-web3 https://api.gexno.com/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "gexno-web3": {
      "url": "https://api.gexno.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": {
    "gexno-web3": {
      "type": "http",
      "url": "https://api.gexno.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://api.gexno.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 JanzenChen, 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 Otheri

More stars than 0% of the other 32589 servers in this category
Published to the registry more recently than 76% of the other 32589 servers in this category
Basic checks equal to or better than 100% of the other 32589 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 Gexno Web3 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 (0.1.3) reached the registry 11 days 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: Spec Driven Development, Remote Desktop Commander, Detailing Manager

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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.

Gexno Web3 MCP

Free, no-signup on-chain lookups for AI agents. Two read-only tools: wallet profile and NFT metadata.

Remote: https://api.gexno.com/mcp — Streamable HTTP, nothing to install
npm: npx @gexno/web3-mcp — same tools over stdio
Registry name: io.github.JanzenChen/gexno-web3

No API key, no signup, no wallet connection. Reads only.

Tool	What it returns
`lookup_wallet`	ETH balance, contract flag, outbound tx count, simple risk heuristics (`ok` / `new_wallet` / `contract` / `eip7702`)
`lookup_nft`	NFT metadata for contract + tokenId: name, description, image HTTP URL, IPFS gateway link, raw JSON (ERC-721 `tokenURI` and ERC-1155 `uri`)

Backed by the Gexno Web3 Agent API: https://api.gexno.com/api/web3

Use it (remote, nothing to install)

"mcpServers": { "gexno-web3": { "url": "https://api.gexno.com/mcp" } } }

Works with Claude Desktop, Cursor, and any MCP client that supports remote servers.

Discovery documents:

server card — https://api.gexno.com/.well-known/mcp/server-card.json
AI catalog — https://api.gexno.com/.well-known/ai-catalog.json
OpenAPI — https://api.gexno.com/api/web3/openapi.json

Use it (npm, stdio)

npx -y @gexno/web3-mcp

Client config:

"mcpServers": { "gexno-web3": { "command": "npx", "args": ["-y", "@gexno/web3-mcp"] } } }

Requires Node.js >= 20. The stdio process calls the same public HTTP API.

Environment variables

Variable	Default	Purpose
`GEXNO_API_BASE`	`https://api.gexno.com`	API root, useful for self-hosted instances
`GEXNO_TIMEOUT_MS`	`35000`	Per-request timeout; NFT + IPFS resolution can be slow
`GEXNO_INTERNAL_TOKEN`	—	Only for self-hosted Gexno APIs that require it. Never commit a value.

Programmatic use

import { TOOLS, createApiGet, runTool } from '@gexno/web3-mcp'

const apiGet = createApiGet({ apiBase: 'https://api.gexno.com' }) const wallet = await runTool('lookup_wallet', { address: '0xd8dA...6045' }, apiGet)

Use it (local bundle, MCPB)

Download gexno-web3.mcpb from Releases and open it in Claude Desktop (drag onto the app, or Settings → Extensions).

What the output looks like

"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045", "balanceEth": "5.7736", "isContract": false, "txCount": 5969, "risk": "eip7702", "eip7702": true, "delegation": { "address": "0xd1ea…", "verified": true } }

EIP-7702 delegated EOAs are reported as risk: "eip7702" with isContract: false — they are still EOAs, they just carry a delegation designator. We parse the 0xef0100 prefix and checksum the delegate address, so a delegated wallet is not misreported as a smart contract.

Limits & behaviour

Free tier: short-burst rate limit plus a daily cap per IP; no key required.
Cached reads: wallet ~60s, NFT metadata ~5min. Repeat lookups are millisecond-scale.
No signup, no tracking, no wallet connection. Reads only.
Not an AML/risk score. Heuristics are intentionally simple.
Errors surface as normal MCP tool errors; the process does not crash.

Development

npm install

npm run smoke # live wallet lookup against the API npm start # run the stdio server directly

Test against a local API instead of production with GEXNO_API_BASE=http://127.0.0.1:3000.

Security posture and residual risks: HARDENING.md

Gexno Web3

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 Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Detailing Manager

README from the maker

Gexno Web3 MCP

Use it (remote, nothing to install)

Use it (npm, stdio)

Environment variables

Programmatic use

Use it (local bundle, MCPB)

What the output looks like

Limits & behaviour

Development

Links