x402 · Base mainnet · keyless

Whale data,
built for agents.

A metered, pay-per-call whale-intelligence API for prediction markets. No account. No API key. Discover it, call it, pay per request over x402 — and verify every outcome with an ed25519 signature.

Read the docs →Get the MCP server
Keyless
No signup, no key. Discover via /.well-known/x402 and call.
Metered
Pay-per-call over x402 on Base mainnet via the PayAI facilitator.
Verifiable
Outcome-verified track records, ed25519-signed. Trust the math.
// how a machine buys

Discover. Call. Pay.

Predge speaks the agent-native payment path end to end. No dashboard, no onboarding — your agent negotiates payment inline over x402 and gets data back.

01
Discover

Fetch /.well-known/x402 for the route catalog, prices, and payment terms.

02
Call

Hit any /v1/* route. Unpaid requests return an x402 402 challenge.

03
Pay per call

Settle over x402 on Base mainnet via the PayAI facilitator — data returns in the same round-trip.

// the api

17 routes, self-describing.

Live whale flow, market movers, consensus signals, wallet leaderboards and comparisons, Kalshi coverage, and signed attestations. The discovery doc lists every route with its price, schema and URL — read it once, then call what you need.

curl https://data.predge.io/.well-known/x402
OpenAPI spec →llms.txt →Full docs →
Whales
  • /v1/whales/latest
  • /v1/whales/market/{id}
  • /v1/bets/biggest
Markets
  • /v1/markets/movers
  • /v1/markets/{id}
Signals
  • /v1/signals/daily
  • /v1/signals/consensus
  • /v1/signals/market/{id}
Wallets
  • /v1/wallets/leaderboard
  • /v1/wallets/compare
  • /v1/wallets/{addr}
Kalshi
  • /v1/kalshi/markets/movers
  • /v1/kalshi/whales/latest
Attest
  • /v1/attest/{addr}

MCP server

Add Predge whale data to any MCP-capable agent in one line. Published as @predge/whale-data-mcp (io.github.predgeAI/whale-data-mcp) — live in the MCP registry.

github.com/predgeAI/whale-data-mcp →

Signed attestation

/v1/attest returns an ed25519-signed, outcome-verified track record for any wallet — the B2B trust primitive. Verify against the public key at /.well-known/predge-attest.json.

View the signing key →

Point your agent
at data.predge.io

Keyless. Pay-per-call. Signed. Live on Base mainnet.

Read the docs →