tx402

Name: tx402
Author: Mahesvannan

by Mahesvannanversion 0.2.0i★ –iRuns on your computer

Registry nameio.github.Mahesvannan/tx402

Install

Overview

Description from the maker (original English)

Explain Algorand transactions, groups, batches, and account activity with x402.

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 on your computer
Transport: stdio
Category: Other

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "tx402": {
      "command": "npx",
      "args": [
        "-y",
        "tx402-mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add tx402 -- npx -y tx402-mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "tx402": {
      "command": "npx",
      "args": [
        "-y",
        "tx402-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": {
    "tx402": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "tx402-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.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

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

Runs on your computer; the tool list appears in your AI app after you install it.

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 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Mahesvannan, 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 applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 18379 servers in this category
Published to the registry more recently than 18% of the other 18379 servers in this category
Basic checks equal to or better than 100% of the other 18379 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 tx402 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 on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.0) reached the registry 3 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, NexusWindows

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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.

tx402

Plain-English explanations of Algorand transactions, sold as a pay-per-call API with x402 on Algorand.

Live service:

https://tx402-production.up.railway.app

Explain one transaction, every leg of an atomic group, a batch of IDs, or recent account activity. Responses include scaled amounts, inner transactions, asset names, fees, timestamps, counterparties, and source-verified protocol labels.

Try the free fixed-transaction demo without a wallet:

https://tx402-production.up.railway.app/demo?example=algo

GET /explain?txid=YRSG7IKDPCK4XMKFFTFFFYMIHF6SJOMHUOIE4FFUWNLEQ4WG2ZOQ

Example response after payment:

"txid": "YRSG7IKDPCK4XMKFFTFFFYMIHF6SJOMHUOIE4FFUWNLEQ4WG2ZOQ", "network": "mainnet", "summary": "On June 16, 2019, wallet VCINCV...JPMIPM sent 1 ALGO to CRBMB5...QLXZOY. Paid 0.001 ALGO in fees.", "details": { "type": "pay", "sender": "VCINCVUX2DBKQ6WP63NOGPEAQAYGHGSGQX7TSH4M5LI5NBPVAGIHJPMIPM", "transfer": { "amount": "1", "assetId": 0, "unit": "ALGO" } } }

Raw Algorand indexer JSON is optimized for machines doing bookkeeping: amounts are base units, assets are numeric IDs, and notes are base64. tx402 is the translation layer for agents and applications that need to explain a transaction to a person.

API

Public routes:

GET / - landing page with service metadata links
GET /health - process liveness
GET /health?deep=1&network=mainnet - readiness check for upstream services
GET /discovery - machine-readable service description and pricing metadata
GET /openapi.json - OpenAPI 3.1 specification
GET /.well-known/agent.json - agent marketplace manifest
GET /.well-known/x402 - x402 resource manifest
GET /llms.txt - agent-readable documentation
GET /demo?example=algo|usdc - free allowlisted Mainnet examples
GET /explain?txid=...&network=mainnet - paid transaction explanation
GET /group?txid=...&network=mainnet - paid atomic-group explanation
POST /batch - paid batch of 1 to 10 transaction IDs
GET /account/activity?address=...&limit=25 - paid activity summary
GET /analytics - free aggregate adoption counters

Default prices are $0.005 for /explain, $0.01 for /group, $0.02 for /batch, and $0.01 for /account/activity. Production accepts Mainnet USDC:

network: algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=
asset: 31566704
receiver: 6RK3U3OF2B4Q773L4KC7OVFHQGU5I74NHRZ36QN6CVF527CKXAL62YR754

Architecture

tx402 has a small deterministic core and a thin serving shell.

Core:

src/decoder.js converts raw Algorand indexer JSON into a normalized transaction object.
src/narrator.js converts that normalized object into one readable sentence.
src/insights.js builds group and account-level summaries.
src/explainer.js resolves assets and orchestrates the single, group, batch, and account products.
src/knownApps.js maps known app and asset IDs to human labels with a verification source for every narrated protocol claim.

Serving shell:

src/index.js owns HTTP routes, middleware ordering, logging, rate limits, health checks, and graceful shutdown.
src/indexer.js is the only module that talks to AlgoNode's public indexer.
src/payments.js declares the x402 price and receiver, then delegates verification and settlement to the hosted GoPlausible facilitator.
src/rateLimit.js provides the in-memory per-IP limiter.
src/analytics.js keeps aggregate process-local adoption counters without cookies, raw wallet addresses, query strings, or IP history.

The server never stores private keys. Buyer signing happens client-side. The resource server only advertises a price, validates payment, and settles through the facilitator after a successful product-route response.

Run Locally

npm install

npm start npm test

Local endpoints:

curl "http://localhost:4021/health"

curl "http://localhost:4021/discovery" curl "http://localhost:4021/explain?txid=SOME_REAL_MAINNET_TXID" curl "http://localhost:4021/group?txid=SOME_REAL_MAINNET_TXID"

The app reads .env when present. Leave USDC_ASSET_ID unset unless you need a non-standard asset; the code derives the canonical USDC asset from NETWORK.

Client Examples

Read-only example client:

npm run example:client

npm run example:catalog

The default client prints discovery metadata and the x402 payment challenge without spending funds. To make it pay, configure a funded buyer wallet and set TX402_EXAMPLE_PAY=1 plus CONFIRM_MAINNET_PAYMENT=1.

OpenAPI:

openapi.json
https://tx402-production.up.railway.app/openapi.json

Agent marketplace metadata:

https://tx402-production.up.railway.app/.well-known/agent.json
https://tx402-production.up.railway.app/.well-known/x402
https://tx402-production.up.railway.app/llms.txt

Copy-paste integrations and distribution assets:

Integration guide
Distribution checklist
GoPlausible MCP proposal
Outreach kit

The paid route also declares the standard x402 Bazaar extension, including its input/output schemas, service metadata, and example request. Facilitators can index that metadata after a successful settlement.

MCP wrapper:

npm run mcp

After the public npm package is published, agents can install it without cloning this repository:

npx tx402-mcp

By default the MCP wrapper is read-only and returns x402 payment requirements for paid calls. To let it pay from a local wallet, set TX402_MCP_ENABLE_PAYMENTS=1 and CONFIRM_MAINNET_PAYMENT=1.

The six-part adoption roadmap is tracked in PLAN.md.

Submission Assets

Pitch deck
Demo video script

Security Notes

Output strings can contain untrusted on-chain data, including asset names and notes. JSON output is safe as JSON, but consumers rendering HTML must escape it.
Invalid txid input is rejected before indexer access and before payment.
Payment only settles after a successful response.
All product routes, /analytics, /discovery, and deep health checks are rate-limited.
Protocol/app names are only stated as fact when marked verified: true.
Application logs omit query strings and client IP addresses.

Status

Phase 1 - core explainer, free and local
Phase 2 - x402 payment middleware on Testnet, verified end-to-end
Phase 3 - public HTTPS deployment
Phase 4 - Mainnet payment configuration
Phase 5 - first real Mainnet settlement
Phase 6 - example client, OpenAPI spec, optional MCP wrapper

First Mainnet settlement:

txid: XA7HMRPUV4X2GWI4AAGUT5FKAVTNCQJ5ZMUNTVTBKG3GZMES27LA
amount: 0.005000 USDC

Maintainer Notes

Implementation runbooks, deployment commands, phase evidence, and operational cautions live in CLAUDE.md.

tx402

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

NexusWindows

README from the maker

tx402

API

Architecture

Run Locally

Client Examples

Submission Assets

Security Notes

Status

Maintainer Notes