io.github.YichengYang-Ethan/oracle3
Oracle3 prediction-market arbitrage checks
Is the Oracle3 prediction-market arbitrage checks MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-01.
Kalshi and Polymarket data, venue fees, no-arbitrage checks and paper execution for AI agents.
alive probed 2026-11-15 · unchanged since 2026-11-01
- Run it
- uvx oracle3@1.2.2 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- oracle3 1.2.2
- Capabilities
- prompts, resources, tools
- Instructions
- 979 characters
- Of a 1M window
- 0.7 % of a 1M context window
- Count
- 7.0k tokens in Claude, exact, measured 2026-10-25. With the Claude Code prefix mcp__…__ on each tool name: 7.1k. The o200k_base estimate is 4.2k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/YichengYang-Ethan/oracle3-prediction-market-agent
- Website
- https://yichengyang-ethan.github.io/oracle3-prediction-market-agent/
- Registry
- active, updated 2026-09-30 · registry entry
- Changes
- 2 recorded, reachable in 2 of them. A row is added when the result, the tool count or the cost changes.
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.69×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| check_constraint | 1 401 | 830 | 20 % |
| check_constraint_live | 863 | 511 | 12 % |
| trading_fee | 798 | 473 | 11 % |
| paper_order | 650 | 385 | 9 % |
| search_markets | 538 | 319 | 8 % |
Compare this server with others.
More servers
Other registry entries on pypi.org, the ones next to this name; all of them.
- io.github.Yarmoluk/ckg-nemotron-perplexity · needs mcp<2
- io.github.YashLimbani/stackexchange-mcp · alive
- SuperMemory io.github.YashvantHange/supermemory · alive
- when-free io.github.YauhenBichel/when-free · alive
- Embodify io.github.YidaYang/embodify · alive
- io.github.YimingYAN/fivetran-mcp · alive
- io.github.YinTokey/mcp_hackernews · needs mcp<2
- markitai io.github.Ynewtime/markitai · needs args
Servers that mention prediction or arbitrage.
- Fantopy ai.fantopy/fantopy · needs auth
- January AI Nutrition ai.january/nutrition · needs auth
- ai.plith/plith · alive
- app.oddsrail/polymarket-kalshi-trading · needs auth
- Sorsa app.sorsa/sorsa · alive
- com.agiscorecard/agi-scorecard · alive
- Prediction Market News — buy per-query in-session (pmnews) com.a2awire/data-prediction-market-news · alive
- Johnlaney Forecast Desk com.coinmaulers/forecast-desk · no DNS
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-25 06:56 | alive | 5.2 s | 13 | 7.0k | 4.2k |
| 2026-10-18 06:43 | alive | 3.2 s | 13 | 4.2k |
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.