FirmFax prop firm data
Description
Independent rule and fee data on 71 prop trading firms, every figure with its evidence state.
What our measurements say
FirmFax prop firm data is a remote MCP server published at firmfax.com. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 475 ms, placing it among the faster endpoints. It offers a narrow, focused set of 2 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Distinct tool names (get_firm/list_firms) align with their purposes
- No tool overlap/ambiguity
Weaknesses
- Descriptions use undefined terms like 'score range' and 'band'
- No explicit error handling documentation
- get_firm's grade logic is unclear without context
get_firm— Uses ambiguous terms 'score range' and 'band' without definitionget_firm— Grade logic explanation is unclear and context-dependent
Verdict
Event narrative
Risk: low
Advice
Raw observations
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 41ms → warm 44ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
get_firmOne prop trading firm. Every figure states whether we hold evidence for it, and a firm whose score range spans more than one band carries no letter grade at all.
slugstringrequired
list_firmsEvery firm slug and name. Carries no figures, so nothing here needs evidence.
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Supported versions: 2024-11-05 → 2025-06-18
- Added to watch — era: Legacy
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