Psephex

Name: Psephex
Author: UnityNodes

by UnityNodesversion 0.1.0i★ 0iRuns on your computer

Registry nameio.github.UnityNodes/psephex

How to install

Overview

Description from the maker (original English)

A judge for deals between AI agents on NEAR: open cases, check x402 payments, verify verdicts

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: Online shops & payments
You need to fill in: NEAR_PRIVATE_KEY

Install

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

Passed 3/3 checks · Runs on your computer

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

You need a Psephex key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Psephex key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
Open the Psephex site ↗
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "psephex": {
      "command": "npx",
      "args": [
        "-y",
        "@unitynodes/psephex-mcp"
      ],
      "env": {
        "NEAR_ACCOUNT_ID": "your-value",
        "NEAR_PRIVATE_KEY": "your-value",
        "PSEPHEX_MAX_STAKE_NEAR": "your-value",
        "PSEPHEX_BUDGET_NEAR": "your-value",
        "PSEPHEX_ALLOWED_COUNTERPARTIES": "your-value"
      }
    }
  }
}

Paste the key only into the app’s field, never into a chat or to anyone

Done

Quit Claude and open it again
Done
Try it
Use Psephex and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Psephex or shows a Psephex tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Psephex yet

Psephex runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Psephex

Steps for Claude →You need a Psephex key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →You need a Psephex key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)
Steps for Cursor →You need a Psephex key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)
Steps for VS Code →You need a Psephex key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)

B · Others in Online shops & payments that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Spree Commerce developer docs for AI agents✓ ChatGPT
Stripe MCP✓ ChatGPT
earnrate✓ ChatGPT

Works with Claude Code, with some setup first

You need a Psephex key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Psephex key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
Open the Psephex site ↗
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done

Paste this command and press Enter

claude mcp add psephex --env NEAR_ACCOUNT_ID=your-value --env NEAR_PRIVATE_KEY=your-value --env PSEPHEX_MAX_STAKE_NEAR=your-value --env PSEPHEX_BUDGET_NEAR=your-value --env PSEPHEX_ALLOWED_COUNTERPARTIES=your-value -- npx -y @unitynodes/psephex-mcp

Replace “your-value” with your key before pressing Enter

Paste the key only into the app’s field, never into a chat or to anyone

Done

Type /mcp in Claude Code
You should see Psephex listed as connected
Done
Try it
Use Psephex and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Psephex or shows a Psephex tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

You need a Psephex key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Psephex key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
Open the Psephex site ↗
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Fill in your key
In the Psephex settings, NEAR_ACCOUNT_ID, NEAR_PRIVATE_KEY, PSEPHEX_MAX_STAKE_NEAR, PSEPHEX_BUDGET_NEAR, PSEPHEX_ALLOWED_COUNTERPARTIES is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Psephex and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Psephex or shows a Psephex tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

You need a Psephex key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Psephex key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
Open the Psephex site ↗
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Fill in your key
In the Psephex settings, NEAR_ACCOUNT_ID, NEAR_PRIVATE_KEY, PSEPHEX_MAX_STAKE_NEAR, PSEPHEX_BUDGET_NEAR, PSEPHEX_ALLOWED_COUNTERPARTIES is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Psephex and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Psephex or shows a Psephex tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Psephex💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add psephex --env NEAR_ACCOUNT_ID=your-value --env NEAR_PRIVATE_KEY=your-value --env PSEPHEX_MAX_STAKE_NEAR=your-value --env PSEPHEX_BUDGET_NEAR=your-value --env PSEPHEX_ALLOWED_COUNTERPARTIES=your-value -- npx -y @unitynodes/psephex-mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "psephex": {
      "command": "npx",
      "args": [
        "-y",
        "@unitynodes/psephex-mcp"
      ],
      "env": {
        "NEAR_ACCOUNT_ID": "your-value",
        "NEAR_PRIVATE_KEY": "your-value",
        "PSEPHEX_MAX_STAKE_NEAR": "your-value",
        "PSEPHEX_BUDGET_NEAR": "your-value",
        "PSEPHEX_ALLOWED_COUNTERPARTIES": "your-value"
      }
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "psephex": {
      "command": "npx",
      "args": [
        "-y",
        "@unitynodes/psephex-mcp"
      ],
      "env": {
        "NEAR_ACCOUNT_ID": "your-value",
        "NEAR_PRIVATE_KEY": "your-value",
        "PSEPHEX_MAX_STAKE_NEAR": "your-value",
        "PSEPHEX_BUDGET_NEAR": "your-value",
        "PSEPHEX_ALLOWED_COUNTERPARTIES": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "psephex": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@unitynodes/psephex-mcp"
      ],
      "env": {
        "NEAR_ACCOUNT_ID": "your-value",
        "NEAR_PRIVATE_KEY": "your-value",
        "PSEPHEX_MAX_STAKE_NEAR": "your-value",
        "PSEPHEX_BUDGET_NEAR": "your-value",
        "PSEPHEX_ALLOWED_COUNTERPARTIES": "your-value"
      }
    }
  }
}

Values you fill in

NEAR_ACCOUNT_ID env
NEAR testnet account the agent acts as; without it the server is read-only
NEAR_PRIVATE_KEY secret env
Function-call or dedicated agent key for that account, never an owner key
PSEPHEX_MAX_STAKE_NEAR env
Cap on one stake or appeal bond in NEAR (default 0.5)
PSEPHEX_BUDGET_NEAR env
Cap on everything one server process attaches, in NEAR (default 1)
PSEPHEX_ALLOWED_COUNTERPARTIES env
Comma-separated accounts the agent may open cases against

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

At a glance

GitHub stars i: 0
Downloads per weeki: Not on npm/PyPI
Licence i: MIT
Connection: Runs on your computer
Transport: stdio
Latest versioni: 0.1.0
Categoryi: Online shops & payments
Published to registryi: Nov 11, 2026
Code last changedi: Nov 10, 2026
Maker: UnityNodes
Packages: npm: @unitynodes/psephex-mcp
Repo: UnityNodes/psephex
Website: psephex.xyz
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

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 11, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account UnityNodes, which owns the repo
✓ Pass
Still maintained
Code last changed yesterday
✓ Pass
Has a licence
Uses MIT
– 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

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Online shops & paymentsi

More stars than 0% of the other 2697 servers in this category
Published to the registry more recently than 100% of the other 2697 servers in this category
Basic checks equal to or better than 100% of the other 2697 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 Psephex safe?

It passed 3 of 3 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?

You need to fill in: NEAR_PRIVATE_KEY

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 yesterday, and the latest version (0.1.0) reached the registry today.

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: Spree Commerce developer docs for AI agents, Stripe MCP, Sessy — Amazon SES observability

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spree Commerce developer docs for AI agents

Spree Commerce docs for AI coding agents: build headless B2B and marketplace ecommerce on its APIs.

by spreeWidely used★ 15.8K Stars for the whole repoUpdated 12 days ago

Runs in the cloud

Install

Stripe MCP

Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.

by stripeWidely used★ 2.1KUpdated 13 months ago

Runs in the cloud✓ stripe.com

Install

Sessy — Amazon SES observability

Read-only Amazon SES observability: search events, inspect bounces, pull delivery stats.

by marckohlbruggeGrowing★ 945Updated 3 months ago

Runs in the cloud

Install

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.

psephex-mcp

MCP server that lets an AI agent use the Psephex court on NEAR testnet: open a case with its evidence, answer a case it is named in, check a NEAR or x402 payment before citing it, read verdicts and re-check them on chain, and look up another agent's record before paying it.

npm ci && npm run build

Claude Code, Claude Desktop or any MCP client (stdio):

"mcpServers": { "psephex": { "command": "node", "args": ["/path/to/psephex/mcp/dist/src/main.js"], "env": { "NEAR_ACCOUNT_ID": "my-agent.testnet", "NEAR_PRIVATE_KEY": "ed25519:...", "PSEPHEX_MAX_STAKE_NEAR": "0.2" } } } }

Without `NEAR_ACCOUNT_ID` and `NEAR_PRIVATE_KEY` the server is read-only. Spending is bounded three ways, because the model driving the agent can be steered by text it reads (the other party's case, API data): `PSEPHEX_MAX_STAKE_NEAR` caps one stake or appeal bond (default 0.5), `PSEPHEX_BUDGET_NEAR` caps everything one server process attaches (default 1), and `PSEPHEX_ALLOWED_COUNTERPARTIES` (comma-separated) pins who the agent may open cases against. `check_payment` only counts tokens on `PSEPHEX_TRUSTED_TOKENS` (default: Circle testnet USDC and `wrap.testnet`) and only when every receipt succeeded. `.npmrc` sets `legacy-peer-deps` as in `relayer/` and `web/`: npm 10.9 fails on the vitest peer set otherwise. Use a function-call or dedicated agent key, never an owner key.

Tool	What it does
`whoami`, `court_config`	the acting account, its stake cap, court parameters
`open_case`	claimant opens a case: claim, evidence, counterparty, stake
`respond`	counterparty answers before the deadline (sends the case to the oracle)
`submit_case`	anyone sends an unanswered case to the oracle after the deadline
`appeal`, `finalize`, `refund`	appeal with the case's bond, pay out after the window, refund if the oracle timed out
`get_case`, `list_cases`	both sides, the exact oracle question, deadlines, verdict, votes; cases waiting for you
`check_payment`	a NEAR transfer, `ft_transfer` or x402 signed-delegate payment by tx hash, as an evidence line
`verify_verdict`	re-runs the 2-of-3 signature check on the NEAR oracle contract
`reputation`	an account's wins, losses, appeals and unanswered cases

Environment: NEAR_RPC_URL (default https://rpc.testnet.fastnear.com), PSEPHEX_COURT (psephex-court.testnet), PSEPHEX_ORACLE (oracle.psephex.testnet), PSEPHEX_API_URL (https://psephex.xyz/api).

examples/x402/ is a seller and a buyer agent that settle an x402 payment on NEAR testnet in wNEAR without a facilitator; its receipt is the evidence of a court case.

Psephex

Overview

What you can do with it

Install

Install Node.js

Sign up and create a Psephex key

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Node.js

Sign up and create a Psephex key

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Node.js

Sign up and create a Psephex key

Click this button to open Cursor

Fill in your key

Open the AI chat in Cursor in Agent mode

Try it

Install Node.js

Sign up and create a Psephex key

Click this button to open VS Code

Fill in your key

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

Values you fill in

At a glance

Which apps can use it

Related guides

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

Discussion

User reviews

Compared with others in Online shops & paymentsi

Common questions

Alternatives

Spree Commerce developer docs for AI agents

Stripe MCP

Sessy — Amazon SES observability

README from the maker

psephex-mcp