io.github.GammaThreeTrading/fixsim
FIXSIM
io.github.GammaThreeTrading/fixsim costs 2 896 tokens of context per session. It has 21 tool definitions. That is 1.4 % of a 200k window. Measured 2026-10-03.
Test FIX from Claude, ChatGPT, or Cursor: free sandbox FIX sessions or your own FIXSIM instances.
alive probed 2026-10-03 · HTTP 200
21tools
2.9ktokens for the tool definitions
1.4 %of a 200k context window
642 msto initialize
58 msto list tools
- Endpoint
- https://mcp.fixsim.com/mcp (streamable-http)
- Host
- mcp.fixsim.com
- Protocol
- 2025-11-25
- Reports itself as
- fixsim 0.1.2
- Capabilities
- logging, tools
- Instructions
- 677 characters
- Repository
- https://github.com/GammaThreeTrading/fixsim-mcp
- Website
- https://www.fixsim.com/sandbox
- Registry
- active, updated 2026-09-13 · registry entry
- Reachable
- 2 of the last 2 probes
Most expensive tools
| Tool | Tokens | Share of this server |
|---|---|---|
| fixsim_send_order | 338 | 12 % |
| fixsim_act_on_orders | 278 | 10 % |
| fixsim_cancel_order_out | 202 | 7 % |
| fixsim_list_orders_in | 188 | 6 % |
| sandbox_create_session | 181 | 6 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Tokens |
|---|---|---|---|---|
| 2026-10-03 20:35 | alive | 642 ms | 21 | 2.9k |
| 2026-10-03 17:51 | alive | 1.1 s | 21 | 2.9k |
Badge
[](https://mcp-pulse.ulehla.dev/s/io.github.GammaThreeTrading/fixsim)