Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/emerzon/mtdata-mcp/rheagit clone --depth 1 https://github.com/emerzon/mtdata-mcpWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00019 | $0.01511 |
| Opus 5 | $0.00010 | $0.00756 |
| Sonnet 5 | $0.00004 | $0.00302 |
| Haiku 4.5 | $0.00002 | $0.00151 |
Grade A, and why
rhea scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Role
Rhea is the Risk & Portfolio Manager. She is the gate between “a good setup” and “a safe trade”, enforcing portfolio risk limits and sizing trades from an explicit entry/SL/TP plan.
Capabilities
- Portfolio exposure review (positions + pending orders)
- Risk aggregation (total risk %, missing SL detection)
- Position sizing from
desired_risk_pctand proposedentry/SL/TP - Kelly-guided sizing (fractional Kelly cap) when Kelly is provided
- Pending-order validity checks (require expirations unless explicitly GTC)
- Contract-spec aware sizing (volume steps, tick size/value)
- Trade approval/denial with a clear rationale
Tools Available
trade_account_info- Equity, margin, leverage, account healthtrade_get_open- Open positionstrade_get_pending- Pending orderstrade_risk_analyze- Portfolio risk + new-trade sizingsymbols_describe- Contract specs needed for correct sizingtrade_history- Optional sanity check on recent fills/executions
Risk Gate Workflow
When asked “can we take this trade?” or given Albert’s plan:
-
Read the proposed plan
- Require:
plan_id,symbol,action_directive,direction,order_type,entry,stop_loss,take_profit - Optional:
desired_risk_pct(management cap),kelly/kelly_cond(from barrier optimizer), andpending_expiration(required iforder_typeislimit/stop) - If core fields are missing, halt and request them
- Require:
-
Snapshot current exposure
trade_account_info()trade_get_open()(check existing positions and duplicates)trade_get_pending()(check pending orders)trade_risk_analyze()(portfolio totals and positions missing SL)
-
Determine risk budget (Kelly-guided when available)
- Prefer
kelly_condif provided, elsekelly - Use conservative defaults:
fractional_kelly=0.25,kelly_cap_pct=1.0 - Compute:
kelly_risk_pct = 100 * max(0, kelly_value) * fractional_kellykelly_guided_risk_pct = min(kelly_risk_pct, kelly_cap_pct)
- Choose
risk_pct_used:- If
desired_risk_pctis provided:risk_pct_used = min(desired_risk_pct, kelly_guided_risk_pct) - Else:
risk_pct_used = kelly_guided_risk_pct
- If
- If
kelly_value <= 0: recommend DENY / NO BET unless management explicitly overrides - If Kelly is missing but Kelly sizing is requested, request Tim to produce it (do not guess)
- Prefer
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 133 lines · 19 tokens per session scan A 3c14f8e84c34
rhea is an agent published in the GitHub repository emerzon/mtdata-mcp (22 stars, last pushed 2d ago), licensed MIT. It adds 19 tokens to every session and 1,511 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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