Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Psychometric data marketplace: Big Five profiles, cognitive biases & behavioral data via x402.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
Pick the AI app you use, then copy the settings.
PSYCHOSYNTH_API_URL, BUYER_PRIVATE_KEY, BASE_RPC_URLValues marked secret are keys to your account. Never share them or paste them into a chat.
You need
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-mcpFill in the empty values before running it.
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.
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.
PSYCHOSYNTH_API_URL envBASE_RPC_URL envThese settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Runs on your computer; the tool list appears in your AI app after you install it.
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
The registry name was verified with the GitHub account 3esign, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
This one runs on your computer; there is no internet endpoint
Runs on your computer and uses local settings instead
Runs on your computer; we can only read tool lists from internet endpoints
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
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.
You need to fill in: BUYER_PRIVATE_KEY
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).
The GitHub repo last changed –, and the latest version (0.1.3) reached the registry 4 months ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.
In the same category: Spec Driven Development, Remote Desktop Commander, Tools MCP
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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
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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 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.
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)"]
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:
Transactions settle query-by-query on the Base blockchain using the x402 standard:
TransferWithAuthorization payloads (EIP-3009) in USDC.Psychosynth exposes an MCP server to connect directly with autonomous agent runtimes.
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.Psychosynth hosts an ultra-premium, dark-luxury financial dashboard for human interaction and debugging at /playground:
git clone https://github.com/3esign/psychosynth.git
cd psychosynth npm install
cp .env.example .env
npx supabase db push
npm run dev
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" } } } }
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.Full architectural specifications, master plans, and developer logs reside in the docs/ folder:
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.
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.
GET /api/v1/discovery — products, live prices, tiers, payTo, and settlement methods in one call.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.Virtuals Protocol agents running the G.A.M.E. Framework can query Psychosynth natively without registering a profile or hosting additional worker processes.
TransferWithAuthorization payload (EIP-3009) to pay for the query.