# Crosswire — Polymarket & Kalshi Arbitrage (slim)

> Crosswire — Polymarket & Kalshi Arbitrage, an MCP server by crosswire-api.com, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Cross-venue Polymarket+Kalshi arbitrage: resolution mismatch, void risk & settlement…

- Full: https://www.anchorterminal.com/tools/crosswire-api-crosswire-polymarket-kalshi-arbitrage.md (~650 tokens) · this version ~580 tokens · JSON https://www.anchorterminal.com/tools/crosswire-api-crosswire-polymarket-kalshi-arbitrage.json · canonical https://www.anchorterminal.com/tools/crosswire-api-crosswire-polymarket-kalshi-arbitrage
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

# Crosswire — Polymarket & Kalshi Arbitrage

> Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/

- Kind: MCP server, by crosswire-api.com (https://crosswire-api.com)
- Listed because: It's published in the registry under crosswire-api.com, a namespace the registry only gives to whoever proves they control that domain.
- What the official MCP registry says: Cross-venue Polymarket+Kalshi arbitrage: resolution mismatch, void risk & settlement divergence.

## Facts

- MCP registry: `com.crosswire-api/crosswire-polymarket-kalshi-arbitrage` 0.6.2
- Endpoint: https://api.crosswire-api.com/mcp (streamable HTTP)
- Source: https://github.com/NicolasDuarte04/crosswire-mcp
- Website: https://crosswire-api.com
- GitHub stars: 1
- Registry entry updated: 2026-06-21

## Tools

- Tools it lists (2, about 1,430 tokens of context, `tools/list` without credentials over MCP 2025-11-25, checked 2026-10-04 22:22 UTC):
  - `check_resolution_risk` (read-only): Pre-trade safety check for cross-venue event markets (crypto oracle-divergence pairs, metered; World Cup football, free). Flags resolution mismatches,…
  - `list_covered_events` (read-only): Free discovery of everything check_resolution_risk can audit across both inventories — the free World Cup football pairs and the metered crypto…
- How its tools read to an agent (0 errors, 0 warnings, 0 notes, about 1,430 tokens; rules at https://www.anchorterminal.com/check.md; not part of the score):

- JSON: https://www.anchorterminal.com/api/v1/tools/crosswire-api-crosswire-polymarket-kalshi-arbitrage.json
- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming