What is OrcaTrace?
OrcaTrace is a pay-per-call Polymarket-intelligence API for AI agents and developers: it tracks smart money on Polymarket with a verifiable whale track record, emits quality-gated repricing and whale-entry signals across the full board, publishes a 4-hourly Intelligence Digest, and runs single-market deep research on demand. Every paid route settles per call in USDC on Base over the x402 protocol — no accounts, no API keys — so an autonomous agent can pull curated prediction-market intelligence the instant it needs it.
What you get
- $0.01
GET /v1/latestMost recent Polymarket feed item
- $0.01
GET /v1/signalOne Polymarket feed item
- $0.03
GET /v1/signalsBatch Polymarket feed items
- $0.10
GET /v1/digestPolymarket Intelligence Digest
- $0.05
GET /v1/digest/historyHistorical Polymarket digests
- $0.02
GET /v1/resolvingMarkets resolving soon
- $0.05
GET /v1/whalesWhale calibration table
- $1.00
GET /v1/researchSingle-market deep-dive research
Free feeds — /v1/index, /v1/pulse, /v1/digest/brief, the verifiable /v1/track-record scorecard, and /v1/sample — need no payment. Paid routes run from $0.01 to $1.00.
How agents pay
Call a paid endpoint with no payment and OrcaTrace answers HTTP 402 with the exact price. Your agent signs an EIP-3009 USDC authorization on Base and retries the same request with the payment header; structured JSON comes back after settlement. Stock x402 clients do the round-trip automatically.
$ curl https://api.orcatrace.dev/v1/digest HTTP/2 402 Payment Required # agent signs a USDC payment on Base and retries HTTP/2 200 OK
Alternatives
Polymarket’s own API and dashboards. Polymarket exposes raw market, order-book, and trade data for free, and its site shows live odds. That is the right source if you want to build your own analysis from primitives. OrcaTrace sits on top of that raw data: it noise-filters repricings, attaches order-book microstructure, and annotates whale entries with hold-to-resolution calibration — the shaping and scoring you would otherwise build yourself.
Third-party trackers and Twitter watchers. Various dashboards surface large Polymarket positions. OrcaTrace differs by publishing a verifiable track record — the free scorecard with full wallet addresses — so a follow/fade label can be checked on-chain rather than taken on faith.
OrcaTrace is informational data only — not financial, investment, or betting advice. You are responsible for your own decisions.
FAQ
- Does OrcaTrace need an API key or account?
- No. There are no signups, API keys, or dashboards. Free feeds are open reads; paid endpoints answer with an x402 payment challenge that a wallet settles per call. Autonomous agents call the API directly.
- How do agents pay for OrcaTrace calls?
- A paid endpoint returns an HTTP 402 challenge with the exact price. The agent signs an EIP-3009 USDC authorization on Base and retries with the payment header; the JSON returns after settlement. Stock x402 clients automate this.
- How is the whale track record verifiable?
- The free /v1/track-record scorecard publishes the aggregate hold-to-resolution win rate, follow/fade ROI, per-odds-band breakdown, and top wallets with full public addresses — so you can cross-check every claim on-chain before paying for the /v1/whales calibration table.
- What happens if a proxied-compute call can't deliver?
- The proxied-compute routes (resolving, whales, research) are guaranteed: if OrcaTrace charges you but cannot return a result, the payment is refunded automatically.