FIXSIM
Test FIX from Claude, ChatGPT, or Cursor: free sandbox FIX sessions or your own FIXSIM instances.
likely compatible
Declares API key header (x-api-key); use Copilot Studio 'API key' → Header.
Rule R2b · what this means · Not tested in Copilot Studio.
| Registry name | io.github.GammaThreeTrading/fixsim |
| Endpoint used for verdict | https://mcp.fixsim.com/mcp |
| Transports | streamable-http |
| Auth (Copilot Studio setting) | API key (header) |
| Last endpoint check | 2026-10-20T18:13:47Z · initialize OK |
| GitHub | GammaThreeTrading/fixsim-mcp |
| Website | https://www.fixsim.com/sandbox |
| Version | 0.1.2 |
| Registry updated | 2026-09-13 |
Track changes like this weekly. New Copilot-ready MCP servers, breakages and auth changes, in one short email.
Is this wrong or out of date? Email us. Data built 2026-10-20.