Thalamic

Federal intelligence infrastructure for AI agents.

Thalamic builds PLEXUS — the only pay-per-call API that transforms raw US government data into scored, synthesized intelligence. 41 federal data sources. 12 cognitive reasoning engines. 5 intelligence products. Pay with USDC on Base via x402. No API keys, no subscriptions.

PLEXUS Intelligence API

Live endpoint: https://plexus-public-production.up.railway.app

Intelligence Products — $0.20–$0.35/call

Scored, synthesized reports combining 4–6 sources into a 0–100 risk score:

Data Adapters — $0.01–$0.03/call

Direct normalized access to 29 federal sources:

fec · epa · osha · sec · courtlistener · opensanctions · gleif · cfpb · npi · cms-payments · fda · fda-food · bls · census · fema · fmcsa · usaspending · sam · propublica-990 · nhtsa · worldbank · usgs · federal-register · clinical-trials · fdic · noaa · congress · college-scorecard · web-extract

AI Reasoning Engines — $0.05–$0.15/call

assertion-router · gscore · tribunal · postcog · whetstone · tessryx · verify · oracle-router · dap · homeostasis · signal-diversity

Related MCP server: CorteX402

Quickstart

PLEXUS uses x402 — pay per call with USDC on Base. No signup required.

# Company risk score
curl -X POST https://plexus-public-production.up.railway.app/v1/products/company-risk \
  -H "Content-Type: application/json" \
  -d '{"entity": "ExxonMobil"}'
# Returns HTTP 402 with payment details → pay → retry → get scored intelligence

# Direct FEC data
curl -X POST https://plexus-public-production.up.railway.app/v1/adapters/fec \
  -H "Content-Type: application/json" \
  -d '{"params": {"type": "candidates", "name": "Sanders", "state": "VT"}}'

Python Client

import requests

BASE = "https://plexus-public-production.up.railway.app"

# Without x402 payment library — inspect the 402 challenge
r = requests.post(f"{BASE}/v1/products/company-risk", json={"entity": "ExxonMobil"})
print(r.status_code)   # 402
print(r.headers["X-Payment-Required"])  # payment details

# With x402 client library
# pip install x402-client
from x402 import Client
client = Client(wallet_private_key="0x...")
result = client.post(f"{BASE}/v1/products/company-risk", json={"entity": "ExxonMobil"})
print(result.json())

MCP Server

PLEXUS is available as a Model Context Protocol server. Connect any MCP-compatible AI client directly.

Endpoint: https://plexus-public-production.up.railway.app/mcp
Qualified name: thalamic/plexus-intelligence
Transport: Streamable HTTP (MCP 2025-03-26)
Tools: 46 (all adapters + products + engines)
Auth: None required — free to connect, x402 payment happens per tool call

{
  "mcpServers": {
    "plexus": {
      "url": "https://plexus-public-production.up.railway.app/mcp"
    }
  }
}

Discovery

Payment

• Protocol: x402 v2

• Network: Base mainnet (eip155:8453)

• Asset: USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913)

• Wallet: 0xBD7dd8b1309823082F42dC042091EfFCb89Cd474

• Facilitator: Coinbase CDP

No accounts. No API keys. Agents discover and pay autonomously.

Listings

• agentic.market — Coinbase x402 marketplace

• nohumans.directory — live status monitoring

• Smithery — MCP registry

• RapidAPI — traditional API marketplace

• awesome-x402 — community directory (PR pending)

Built by

Silent Ampersand LLC — Simi Valley, CA
thalamic.systems · silentampersand.com

License

MIT — see LICENSE