Free
Free
explore the signal
- 5 requests / second
- 300 requests / month
- REST API access
- WebSocket access (1 connection, 2 subscriptions)
- MCP integrations
- Community support
The API for
prediction markets
The only Polymarket API with an intelligence layer built in. Every market, trade, and position — streamed in real time from our own on-chain indexer.
- indexing from
- Nov 2022
- uptime
- 100%
- ahead of chain
- 3-5s
api.radion.app
GET /v1/polymarket/traders/0x7a3f…b21c/edge200 OK
{ "data": { "resolvedEdgeScore": 0.73, "profitable15DayWindowRate": 0.62, "relianceOnBigWins": { "rating": "low" }, "bestEdgeConditions": { "themes": ["Politics", "Geopolitics"] }, "tradeCount": 342, "hasSufficientSample": true }}The problemBuilding on
Building on
Polymarket is broken.
Polymarket's API wasn't built for you.
Rate-limited, cached, browser-first. Every production app hits the wall within days.
You're spending engineering time on plumbing.
Pipelines, normalization, outage handling. Every hour on infra is an hour not spent on your product.
Other infra gives you data. Not intelligence.
Markets, trades, positions, and then you're on your own. No signals, no context, nothing that makes your product more valuable to traders.
The solutionThe infrastructure
The infrastructure
Polymarket never built.
data
Complete data. No limits.
Every market, event, position, and trade. Instant latency, WebSocket streams, webhooks, and backfill to day one. Query anything, anytime.
intelligence
Ready-to-ship intelligence.
Market behaviour and divergence signals — computed on-chain, served as clean endpoints you can ship the same day.
ai-native
AI-native from day one.
MCP server, SDK, and pre-built skills for Claude, Cursor, and Codex. One line of config. Your agents trade on real intelligence.
How it comparesData and intelligence,
Data and intelligence,
in one API.
| Features | Radion | Polymarket | Struct | Predexon |
|---|---|---|---|---|
| Raw data | ||||
| Data latency | Instant | ~10s cache | Instant | ~10s |
| Rate limits | No limit | Limited | No limit | Limited |
| Historical backfill | All-time | Partial | All-time | Limited |
| Webhooks | ||||
| Multiple venues | Roadmap | Roadmap | ||
| MCP server | ||||
| Intelligence — only Radion | ||||
| Trader behaviour intelligence | ||||
| Market behaviour intelligence | ||||
By the numbers
- traders
- 0K+
- markets
- 0.0K+
- trades
- 0.0M+
- positions
- 0.0M+
unique traders indexed
indexed from day one
available via API
tracked in real time
How it worksFrom key to product
From key to product
in three steps.
- 01
Get your API key
Sign up in 30 seconds. Instant access to the full data and intelligence layer. No waitlist.
- 02
Query what you need
Markets, events, and behaviour signals. One clean REST API, WebSocket streams, and an MCP server. Your stack, your way.
- 03
Build what matters
Stop writing infrastructure. Start building your actual product. We handle the data so you don't have to.
Pricing
Start free. Scale by workflow.
Pick the plan that matches how you use Radion: market research, AI agents, production tools, or team products.
Starter
$49/mo
for traders and solo builders
- Everything in Free
- No per-second rate limits
- 3,000 requests / month
- 3 WebSocket connections, 5 subscriptions each
- Email support
Most popular
Pro
$249/mo
for agents & production
- Everything in Starter
- No per-second rate limits
- 50,000 requests / month
- 10 WebSocket connections, 20 subscriptions each
- Priority support
Enterprise
Custom
for teams and products
- Everything in Pro
- Custom request limits
- Unlimited WebSocket connections
- Service-level guarantees (SLA)
- Multi-seat access
FAQ
Common questions.
Radion is a complete API for Polymarket, plus an intelligence layer on top. You get every market, event, trade, and position, with no rate limits, alongside market behaviour signals that Polymarket does not expose.
Get startedStop building pipelines.
Stop building pipelines.
Start building products.
Your first API key is free. No card, no waitlist. Full data and intelligence layer from the first request.