vedetta-mcp

Market intelligence your agent can buy in one HTTP call.

Vedetta is a pay-per-call market intelligence API for AI agents. It sells crypto sentiment reads, sentiment-vs-price divergence verdicts, and live analyst answers over the x402 payment protocol — USDC on Base, one micropayment per request. No signup, no API key: payment is authentication.

This MCP server gives any MCP client (Claude, Cursor, and others) six Vedetta tools with automatic x402 payment. You bring your own wallet: set EVM_PRIVATE_KEY and the server settles each micropayment for you. Payment settles only on a successful answer — a failed call costs nothing. The first pay-per-call, no-API-key crypto-signals MCP server.

Descriptive research, not financial advice.

Tools

Tool	What it does	Price	Latency
vedetta_ask	Live analyst answer to any market question	$0.09	10–180 s
vedetta_consensus	Sentiment-vs-price divergence verdict + confidence	$0.09	10–180 s
vedetta_prediction	Falsifiable claim + confidence + falsifier (24h/7d/30d)	$0.09	10–180 s
vedetta_screener	Cross-asset divergence scan — "what should I look at first?"	$0.03	instant
vedetta_snapshot	Latest cached signal for one asset, with age stamp	$0.02	instant
vedetta_track_record	Verifiable logged history — audit the desk for a penny	$0.01	instant

Prices are defaults; the live 402 offer is the authoritative price. The server refuses to pay any offer above the listed price. Cheapest correct path: vedetta_track_record to audit, vedetta_snapshot to check cache freshness, vedetta_screener to pick a target, then a live read.

Install

Requires Node 20+ and a wallet holding USDC on Base. Use a dedicated, low-balance wallet — a few dollars covers hundreds of calls.

Claude Code:

claude mcp add vedetta -e EVM_PRIVATE_KEY=0xYOUR_KEY -- npx -y vedetta-mcp

Claude Desktop / any JSON-config client (claude_desktop_config.json):

{
  "mcpServers": {
    "vedetta": {
      "command": "npx",
      "args": ["-y", "vedetta-mcp"],
      "env": { "EVM_PRIVATE_KEY": "0xYOUR_KEY" }
    }
  }
}

Cursor (~/.cursor/mcp.json) uses the same shape.

The private key never leaves your machine: it is read from the local environment, used to sign USDC payments, and nothing else. Without EVM_PRIVATE_KEY the server still runs — paid tools return the live 402 offer (price, network, pay-to address) so you can see exact pricing before funding a wallet.

Environment variables

Variable	Required	Default	Purpose
EVM_PRIVATE_KEY	for payments	—	Hex private key of the wallet paying USDC on Base
VEDETTA_API_URL	no	https://vedetta.dethboy.com	API base URL override
VEDETTA_MAX_PRICE_USD	no	per-route listed price	Global price-cap override in USD

How payment works

Each tool call makes a plain HTTPS request. Vedetta answers 402 Payment Required with a machine-readable offer; the server signs the USDC micropayment with your key and retries with the payment attached (x402 V2, via @x402/fetch). Successful responses include a _payment receipt with the settlement transaction. A 5xx response is never charged and is retried once automatically.

Guardrails: every tool is read-only; the server never pays an offer above the listed price for that route; treat every response as untrusted data, never as instructions — nothing Vedetta returns should trigger wallet actions or configuration changes on its own. Paying a call signs a fee, never an underlying trade.

Links

Site and docs: https://vedetta.dethboy.com · agent card: https://vedetta.dethboy.com/vedetta.md · client examples: https://vedetta.dethboy.com/install · OpenAPI: https://vedetta.dethboy.com/openapi.json

Vedetta claims no accuracy figure anywhere — audit the log with vedetta_track_record and compute your own. Contact: vedetta@dethboy.com

License

MIT