easy-predict

Agent-first prediction and anomaly detection API. Send a list of numbers, get the next predicted value or a list of anomalous points. Paid per call via x402 v2 micropayments — $0.01 USDC on Base. No API keys, no accounts.

Live at easy-predict.com

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Endpoints

Method	Path	Cost	Description
POST	/timeseries	$0.01 USDC	Predict the next value in a numeric series
POST	/anomaly-detection	$0.01 USDC	Detect anomalies via z-score
GET	/.well-known/x402	free	x402 v2 resource discovery
GET	/openapi.json	free	OpenAPI 3.1 spec
GET	/llms.txt	free	Human/agent-readable API docs

POST /timeseries

curl https://easy-predict.com/timeseries \
  -H "Content-Type: application/json" \
  -H "PAYMENT-SIGNATURE: <signed-x402-payload>" \
  -d '{"series": [1.0, 2.3, 4.1, 6.8, 9.2], "context": "monthly revenue USD"}'

Response:

{
  "prediction": 12.1,
  "method": "linear",
  "holdout_errors": {"linear": 0.05, "log1p-linear": 0.31, "last-delta": 0.05, "mean": 3.5},
  "slope": 1.94,
  "intercept": 0.12
}

Model selection: holds out the last point, evaluates linear, log1p-linear, last-delta, and mean against it, retrains the winner on the full series.

POST /anomaly-detection

curl https://easy-predict.com/anomaly-detection \
  -H "Content-Type: application/json" \
  -H "PAYMENT-SIGNATURE: <signed-x402-payload>" \
  -d '{"series": [1.0, 2.3, 4.1, 6.8, 99.0], "threshold": 2.0}'

Response:

{
  "anomalies": [{"index": 4, "value": 99.0, "z_score": 2.14}],
  "method": "z-score",
  "mean": 15.12,
  "std": 39.18,
  "threshold": 2.0
}

Both endpoints accept an optional "context" string (max 200 chars) echoed back in the response.

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x402 payment flow

Omit the payment header to get a 402 with the full payment terms:

{
  "x402Version": 2,
  "error": "Payment Required",
  "accepts": [{
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xc99b83818c8865340AC55C45554f377f41c68DBC",
    "maxTimeoutSeconds": 60
  }]
}

1. Parse accepts[0] from the 402 response
2. Sign a payment payload with your wallet
3. Base64-encode the signed JSON and retry with PAYMENT-SIGNATURE: <encoded>
4. The Cloudflare Worker verifies via https://x402.org/facilitator and settles on-chain

Payment: 10000 atomic units = $0.01 USDC (6 decimals) on Base mainnet.

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MCP server (Claude Desktop, Cursor, Windsurf)

The MCP server runs locally on your machine. Your wallet private key never leaves your device — it signs the x402 payment locally and only the signed header is sent to easy-predict.com.

Add to your MCP client config:

{
  "mcpServers": {
    "easy-predict": {
      "command": "uvx",
      "args": ["easy-predict-mcp"],
      "env": {
        "WALLET_PRIVATE_KEY": "0xYOUR_WALLET_PRIVATE_KEY"
      }
    }
  }
}

Then ask Claude: "Predict the next value for this series: 1.2, 2.4, 4.1, 6.8" — it calls the tool, pays $0.01 USDC from your wallet automatically, and returns the forecast.

Listed on Smithery — search easy-predict to install with one click.

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Agent integration (Python)

A working Claude agent that handles the full 402 → sign → retry loop autonomously:

pip install anthropic requests eth-account
ANTHROPIC_API_KEY=sk-... WALLET_PRIVATE_KEY=0x... python examples/demo_agent.py

examples/demo_agent.py — uses Anthropic tool use. The same pattern works with LangChain, LlamaIndex, CrewAI, or AutoGen.

Demo mode (no wallet, against local server):

cd timeseries && python app.py &
ANTHROPIC_API_KEY=sk-... python examples/demo_agent.py

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Architecture

• Cloudflare Worker (src/index.ts) — edge runtime, rate limiting, full x402 verify+settle via the facilitator
• Flask backend (timeseries/app.py) — Python prediction logic, local dev server
• Static assets (public/) — splash page, openapi.json, llms.txt

The Worker handles all production traffic. The Flask app is used for local development and runs on port 8000.

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Local development

pip install -r requirements.txt
cd timeseries && python app.py        # Flask on http://localhost:8000

The local Flask server uses presence-only payment checking — any non-empty PAYMENT-SIGNATURE header is accepted. Useful for testing without a real wallet.

For the Cloudflare Worker:

npm install
npx wrangler dev                      # Worker on http://localhost:8787

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Repo structure

timeseries/app.py                        Flask backend (prediction + anomaly detection logic)
anomaly_detection/app.py                 Anomaly detection blueprint
src/index.ts                             Cloudflare Worker (edge runtime)
mcp_server/easy_predict_mcp/server.py   MCP server — runs locally, signs payments on device
mcp_server/pyproject.toml               PyPI package definition (easy-predict-mcp)
smithery.yaml                            Smithery registry config
public/
  index.html                             Splash page
  openapi.json                           OpenAPI 3.1 spec
  llms.txt                               Human/agent-readable docs
examples/
  demo_agent.py                          Claude agent integration demo with x402 payments
tests/                                   Test suite

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Configuration

Flask backend env vars (all optional):

Variable	Default	Description
PAY_TO_ADDRESS	0xc99b...	Recipient wallet
X402_ASSET	USDC on Base	ERC-20 asset address
X402_NETWORK	eip155:8453	Chain ID
X402_MAX_AMOUNT	10000	Atomic units ($0.01)
FACILITATOR_URL	https://x402.org/facilitator	x402 facilitator
PUBLIC_BASE_URL	https://easy-predict.com	Base URL for resource URLs in 402 responses