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Psychosynth

by 3esignversion 0.1.3i★ –iRuns on your computer
Registry nameio.github.3esign/psychosynth

Install

Overview

Description from the maker (original English)

Psychometric data marketplace: Big Five profiles, cognitive biases & behavioral data via x402.

PopNx MCP’s three pillars

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

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
  • You need to fill in: BUYER_PRIVATE_KEY

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).
  • You fill in yourself: PSYCHOSYNTH_API_URL, BUYER_PRIVATE_KEY, BASE_RPC_URL

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

  • npmNode.js installed (for the npx command)

Which app do you use?

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": {
    "psychosynth": {
      "command": "npx",
      "args": [
        "-y",
        "psychosynth-mcp"
      ],
      "env": {
        "PSYCHOSYNTH_API_URL": "your-value",
        "BUYER_PRIVATE_KEY": "your-value",
        "BASE_RPC_URL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add psychosynth --env PSYCHOSYNTH_API_URL=your-value --env BUYER_PRIVATE_KEY=your-value --env BASE_RPC_URL=your-value -- npx -y psychosynth-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "psychosynth": {
      "command": "npx",
      "args": [
        "-y",
        "psychosynth-mcp"
      ],
      "env": {
        "PSYCHOSYNTH_API_URL": "your-value",
        "BUYER_PRIVATE_KEY": "your-value",
        "BASE_RPC_URL": "your-value"
      }
    }
  }
}

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": {
    "psychosynth": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "psychosynth-mcp"
      ],
      "env": {
        "PSYCHOSYNTH_API_URL": "your-value",
        "BUYER_PRIVATE_KEY": "your-value",
        "BASE_RPC_URL": "your-value"
      }
    }
  }
}

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.

Values you fill in

  • PSYCHOSYNTH_API_URL env
    Base URL of the Psychosynth API deployment (e.g. https://your-app.vercel.app). Defaults to http://localhost:3000 for local development.
  • BUYER_PRIVATE_KEY secret env
    Base (EVM) wallet private key used to pay for queries via x402. Omit to use only the free catalog, preview, and quote tools.
  • BASE_RPC_URL env
    Optional custom Base mainnet RPC endpoint. Defaults to https://mainnet.base.org.

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 7, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account 3esign, 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 32564 servers in this category
  • Published to the registry more recently than 19% of the other 32564 servers in this category
  • Basic checks equal to or better than 100% of the other 32564 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 Psychosynth 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?

You need to fill in: BUYER_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 –, and the latest version (0.1.3) reached the registry 4 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, Tools MCP

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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.

Psychosynth

Psychosynth is an agent-native, on-chain psychometric data marketplace. It delivers high-variance, human-curated personality profiles and profile-conditioned behavioral responses to autonomous systems. Settle transactions query-by-query in USDC on Base using the x402 micro-payment protocol—completely free of human intermediaries.


System Architecture

graph TD

A["Generator OS (DB Templates)"] --> B["LLM Synthesis (Flash/Sonnet)"] B --> C["Hooks Pipeline (validation & dedup)"] C --> D["Curation Queue (Review Desk)"] D --> E["Supabase DB Store"] E --> F["x402 Proxy Middleware (Base)"] F --> G["JSON API / MCP Server"] G --> H["Autonomous Agents (Eliza, OpenClaw, Hermes)"]


Core Capabilities

1. v2 Psychometric Engine

Standard LLMs suffer from "average-model bias," producing homogeneous, risk-neutral responses in games and simulations. Psychosynth resolves this by delivering structured, high-variance datasets containing:

  • Five-Factor Model (OCEAN): Openness, Conscientiousness, Extraversion, Agreeableness, Neuroticism.
  • Dark Triad Traits: Machiavellianism, Narcissism, and Psychopathy.
  • Prospect Theory Posture: Loss aversion coefficients ($\lambda$) and power utility exponents for gains ($\alpha$) and losses ($\beta$).
  • Cognitive Reflection: System 1 (heuristic-driven) vs. System 2 (logical/deliberative) preferences, alongside Cognitive Reflection Test (CRT) scores.
2. Agent-Native Payments (x402)

Transactions settle query-by-query on the Base blockchain using the x402 standard:

  • Gasless Settlement: Agents use their EVM wallets to sign gasless TransferWithAuthorization payloads (EIP-3009) in USDC.
  • Proxy Middleware: The backend verifies the signature, broadcasts the settlement on-chain, and delivers the requested dataset in a single HTTP request loop.
3. Model Context Protocol (MCP) Server

Psychosynth exposes an MCP server to connect directly with autonomous agent runtimes.

  • Supported Frameworks: ElizaOS, OpenClaw (via MCPorter), Nous Research's Hermes Agent, and Virtuals Protocol (via G.A.M.E. SDK custom actions).
  • Exposed Tools:
  • list_products: Discover available products, schemas, and pricing.
  • preview_records: Fetch free, deterministic samples to verify schema shape.
  • get_quote: Request an x402 payment quote without executing transactions.
  • query_records: Execute on-chain payments and retrieve full data payloads.
4. Interactive Lab OS Playground

Psychosynth hosts an ultra-premium, dark-luxury financial dashboard for human interaction and debugging at /playground:

  • Real-Time Radar Chart: Dynamic SVG spider map showing 8 psychometric dimensions (OCEAN, Dark Triad, Prospect Theory) updating instantly as parameters change.
  • Holographic Agent Passports: Generates beautiful, shareable glassmorphism identity cards with automated archetype classification and direct 1-click Twitter sharing.
  • Multi-Agent Duel Arena: A live simulation pit where two agents with distinct profiles (e.g., Solana Degen vs. Risk-Averse Institution) negotiate a transaction, with System 1/2 reasoning streaming in real-time.
  • x402 Protocol Inspector: Step-by-step interactive terminal visualizing the HTTP 402 payment challenge, EIP-712 signing, Base facilitator settlement, and payload decryption.

Setup & Installation

Prerequisites
  • Node.js >= 18
  • Supabase CLI (optional, for local DB development)
Quick Start
  1. Clone the repository and install dependencies:
   git clone https://github.com/3esign/psychosynth.git

cd psychosynth npm install

  1. Configure environment variables:
   cp .env.example .env

Fill in Supabase keys, X402 payout address, and keys.

  1. Deploy Supabase migrations and seed data:
   npx supabase db push

Seeds the base schema and version 2 generators

  1. Launch the Next.js development server:
   npm run dev

MCP Server Configuration

Build the MCP server (npm run build inside mcp/), then register it with your agent by adding the following entry to your MCP client config (e.g. claude_desktop_config.json). Use the absolute path to the built server on your machine:

{

"mcpServers": { "psychosynth": { "command": "node", "args": ["/absolute/path/to/psychosynth/mcp/dist/index.js"], "env": { "PSYCHOSYNTH_API_URL": "https://data.svemir.chat", "BUYER_PRIVATE_KEY": "0xYourBuyerWalletPrivateKey", "BASE_RPC_URL": "https://mainnet.base.org" } } } }


CLI & Scripts

  • npm run typecheck — Runs TypeScript compiler checks without emitting files.
  • npm run buyer-test — Simulates an end-to-end paid query against a running instance.
  • npm run export:sft | export:dpo | export:reject-cls — Exports curation data into training formats.

Documentation

Full architectural specifications, master plans, and developer logs reside in the docs/ folder:

  • MASTERPLAN.md — Product vision and economic structures.
  • DISCOVERY.md — Framework-specific agent integration details.
  • DEVELOPMENT.md — Detailed engineering specs and database schema designs.

Ecosystem & Platform Integrations

1. Faces Wallet MCP (Buzz by Block & ACP Native)

Psychosynth connects directly with Buzz by Block agents (Goose, Codex, Claude Code) via the Faces Wallet MCP server. Agents in a Buzz workspace use their on-chain Base wallet to autonomously settle x402 queries for psychometric data using x402_fetch.

  • Repository: https://github.com/3esign/Faces-Wallet-MCP
  • Capability: Any Buzz agent can load the Faces MCP server, check balances, and query Psychosynth endpoints with automated EIP-3009 gasless USDC settlement up to a set spend cap.
2. Bankr Ecosystem (x402 Native)

Psychosynth speaks standard x402: agents sign a gasless USDC EIP-3009 TransferWithAuthorization on Base and the server settles it via an x402 facilitator (the facilitator broadcasts and pays gas). This is the payment shape Bankr platform wallets, x402-fetch, and most agent wallet layers produce automatically. Self-settled txHash payments (Base or Solana) remain supported as a fallback.

  • Free agent preflight: GET /api/v1/discovery — products, live prices, tiers, payTo, and settlement methods in one call.
  • Bankr skill: the submission package for the BankrBot/skills catalog lives in integrations/bankr-skills/psychosynth/ (SKILL.md + catalog.json + logo + references + scripts). Once merged it surfaces on skills.bankr.bot and installs with: install the psychosynth skill from https://github.com/BankrBot/skills/tree/main/psychosynth.
  • Positioning: existing intelligence skills in that ecosystem analyze tokens; Psychosynth sells synthetic *behavioral* data — priors about how market participants act — for trading sims, counterparty modeling, and agent stress-testing.
2. Virtuals Protocol (G.A.M.E. SDK Custom Actions)

Virtuals Protocol agents running the G.A.M.E. Framework can query Psychosynth natively without registering a profile or hosting additional worker processes.

  • Action Schema: Map our query endpoints to a G.A.M.E. custom action. The agent determines which data it needs based on its operational loop.
  • Dynamic Payment: The agent constructs and signs a gasless EVM TransferWithAuthorization payload (EIP-3009) to pay for the query.
  • Seamless HTTP resolution: The agent's tool execution script POSTs/GETs the payload directly to our Vercel API endpoint. We verify and settle the transaction, returning the records in the same response block. See API Documentation for schema payloads and code templates.
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