
Psychosynth
io.github.3esignPublished by GitHub account 3esignv0.1.3Updated Nov 3, 2026
Psychometric data marketplace: Big Five profiles, cognitive biases & behavioral data via x402.
Overview
Psychosynth is a local MCP server that lets an assistant browse, preview and buy synthetic psychometric datasets, paying per query in USDC on Base via x402.
- What you can do
- List available psychometric products with their schemas and pricing
- Fetch free deterministic sample records to check schema shape
- Request an x402 payment quote without executing a transaction
- Run a paid query that settles USDC on Base and returns full data payloads
- Datasets cover Big Five (OCEAN) traits, Dark Triad, prospect-theory posture and cognitive reflection scores
- When to use it
- Use it when an agent needs high-variance, human-curated personality or behavioral priors for simulations, counterparty modeling, trading scenarios or agent stress-testing, and you are willing to pay per query in USDC on Base.
- Requirements
- Runs locally as an npm package (psychosynth-mcp) on Node.js 18 or later, configured in the MCP client with an absolute path to the built server. Needs PSYCHOSYNTH_API_URL pointing at a Psychosynth API deployment, optionally BASE_RPC_URL for a custom Base RPC endpoint, and BUYER_PRIVATE_KEY for paid queries; without the key only free catalog, preview and quote tools work.
Installation
In SourceWeft
- Open Psychosynth in the dashboard and add it to a workspace.
- Enable the server for the chats that should use its tools.
Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.
Other MCP clients
Follow the launch instructions in the repository.
README
Psychosynth
[License: MIT] [Payments: x402] [MCP: Supported]
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
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
TransferWithAuthorizationpayloads (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
-
Clone the repository and install dependencies:
-
Configure environment variables:
-
Deploy Supabase migrations and seed data:
-
Launch the Next.js development server:
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:
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
TransferWithAuthorizationpayload (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.
Source: README.md at commit 2d0e5d1
Tools
0Version history
1- v0.1.3LatestSep 16, 2026
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