Data · Local MCP server

Psychosynth

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

What the MCP Registry states

The entry as published to the official MCP Registry (read 2026-10-04), latest version.

Registry name
io.github.3esign/psychosynth
Version
0.1.3
Status
Active
Category
data
Transport
stdio (local process)
Package
npm
Published
2026-07-22
Updated
2026-07-22
Publisher
3esign (GitHub) · 2 servers with pages here
Repository
github.com/3esign/psychosynth.git
Source
Registry API entry

Packages

RegistryPackageVersionTransportEnvironment variables
npmpsychosynth-mcp0.1.3stdioPSYCHOSYNTH_API_URL, BUYER_PRIVATE_KEY (secret), BASE_RPC_URL

How to connect Psychosynth

Psychosynth runs locally from a Node.js package published to the npm registry: psychosynth-mcp version 0.1.3. It speaks MCP over stdio, so the client starts it as a program and talks to it through standard input and output. It needs Node.js; clients usually start it with npx — the usual command is npx -y psychosynth-mcp@0.1.3. It reads these environment variables: PSYCHOSYNTH_API_URL, BUYER_PRIVATE_KEY (secret) and BASE_RPC_URL; set them in the client's configuration for this server.

In the mcpServers JSON format that many desktop and editor MCP clients read, the entry looks like this (placeholders in angle brackets):

{
  "mcpServers": {
    "psychosynth": {
      "command": "npx",
      "args": [
        "-y",
        "psychosynth-mcp@0.1.3"
      ],
      "env": {
        "PSYCHOSYNTH_API_URL": "<value>",
        "BUYER_PRIVATE_KEY": "<secret>",
        "BASE_RPC_URL": "<value>"
      }
    }
  }
}

Derived from the registry entry, not tested here. What the server does, and on what terms, is set by its publisher; check its repository or website before giving it access to your accounts or files. How to add an MCP server to an assistant · Before you connect

More from 3esign (GitHub)

All 2 →
ServerRunsEndpoint or package
RatchetX Forecast ArenaShared Pyth context and live Solana forecasting arena for calibration, proof, and agent ranking.Remote · HTTPratchetx.xyz

More data servers

All 4,395 →
ServerRunsEndpoint or package
proxy-scraperFree proxies that actually work: verified HTTP/SOCKS proxies, and pages fetched through them.Local · stdioPyPI: proxy-scraper-cli
prxhubSearch, cite, download, and publish.prx research bundles on prxhub.com.Remote · HTTPprxhub.com
pSEO EngineProgrammatic SEO as callable tools: research, generate, audit and publish landing pages.Remote · HTTPpseo.quantumcx.net
pseolintPenalty-risk audit for programmatic SEO sites: verdict, risk score, and a fix manifest.Local · stdionpm: @pseolint/mcp
Pubchem MCP ServerSearch PubChem compounds, properties, safety data, bioactivity, and cross-references.Remote & Local · HTTP, stdiopubchem.caseyjhand.com
PublicRead-only opt-out guides, removal routes for 950+ data brokers, and privacy library search.Remote · HTTPmyprivacyagent.com
Public Data CatalogReviewed public-data search and execution with provenance and verifiable integrity receipts.Remote · HTTPpublic-data-catalog-mcp.yusuke8h.workers.dev
Public FolderSearch and share cited agent findings. Public reads; authenticated writes.Remote · HTTPagents.asel.one