Clear Tape

Q: Is Clear Tape MCP server safe?

QAmcp's test on 21 Oct 2026: No hidden instructions were found in its tool descriptions. Its error messages showed no secrets or internal details. All 11 of its tools are labeled read-only. Overall it scored 93/100 on 21 Oct 2026. A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

by cleartape.ai · https://app.cleartape.ai/mcp

Free trading calculators, trading-system rules, a glossary and lesson search. No market data.

11 tools✓ all read-only✓ no account neededPricing: on their site

See pricing →Visit website

93 /100

PASS · WITH NOTES

10 of 10 checks · 21 Oct 2026

Is Clear Tape MCP server safe?

No hidden instructions were found in its tool descriptions.
Its error messages showed no secrets or internal details.
All 11 of its tools are labeled read-only.
Overall it scored 93/100 on 21 Oct 2026.

A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

What it can do

11 tools, in the server's own words.

calculate_position_sizeread-only

Position size from the stop: how many shares to buy (or short) so that a stop-out loses a set percentage of the account.

calculate_risk_rewardread-only

Risk/reward ratio of a planned trade, the win rate it needs to break even, and (optionally) an exit expressed as an R multiple.

calculate_expectancyread-only

Expectancy per trade, per 100 trades, payoff ratio, break-even win rate and profit factor from a win rate and average win and loss.

calculate_atr_stopread-only

A volatility (ATR) stop: entry minus (long) or plus (short) a multiple of the average true range.

calculate_drawdown_recoveryread-only

The gain needed to recover from a drawdown and, optionally, how many losing trades in a row at a fixed risk per trade cause it.

calculate_kelly_criterionread-only

Full and fractional Kelly risk per trade from a win rate and payoff ratio, with the edge per 1R and the break-even win rate.

calculate_trading_costread-only

The cost of one round trip (commissions, bid-ask spread, slippage) in USD, in R, as a share of the target move and of the position, and over a year of trades.

calculate_losing_streakread-only

The exact probability of at least one losing streak of a given length over a number of independent trades, the expected longest streak and the streak 95% of se…

get_trading_system_rulesread-only

Without id: lists Clear Tape's eleven preset trading systems (trend, breakout, momentum and volume) with their style, holding period and one-line entry, stop a…

lookup_glossary_termread-only

Looks up a trading term in Clear Tape's bilingual (English and Simplified Chinese) glossary of about 70 terms, such as "R multiple", "ATR", "drawdown" or "止损".

search_learningread-only

Searches Clear Tape's free trading education by keyword: the Learn articles, the Academy lessons, the trading-strategy pages and the calculators, in English or…

Test results

Safe mode: only tools labeled read-only were run. How the test works

!
Every tool is described
3 warnings
- !calculate_risk_reward and calculate_kelly_criterion have nearly the same description (68% of their words are shared; the only difference: "reward", "planned", "need" vs "kelly", "criterion", "full"), so an AI may not know which to pick
- !calculate_expectancy and calculate_kelly_criterion have nearly the same description (68% of their words are shared; the only difference: "expectancy", "100", "profit" vs "kelly", "criterion", "full"), so an AI may not know which to pick
- !calculate_risk_reward and calculate_expectancy have nearly the same description (62% of their words are shared; the only difference: "risk", "reward", "planned" vs "expectancy", "100", "payoff"), so an AI may not know which to pick
note
✓
ConnectsConnected in 466 ms
pass
✓
Ready for the newest MCP versionUses the latest MCP version (2026-07-28)
pass
✓
Lists its toolsFound 11 tools
pass
✓
Tools are labeled safe or dangerousEvery tool has a safety label
pass
✓
No hidden instructionsNo hidden instructions found in tool descriptions
pass
✓
Tools work with good inputs
All good
- ✓calculate_position_size: Answered with an error, probably because of our sample input: Invalid input for calculate_position_size: stop: The stop can’t be the same as the entry. {"error":"Invalid input for calculate_position_si…
- ✓calculate_risk_reward: Answered with an error, probably because of our sample input: Invalid input for calculate_risk_reward: stop: The stop can’t be the same as the entry. {"error":"Invalid input for calculate_risk_reward: …
- ✓calculate_expectancy: Worked (117 ms)
- ✓calculate_atr_stop: Answered with an error, probably because of our sample input: Invalid input for calculate_atr_stop: atr: Enter a number. {"error":"Invalid input for calculate_atr_stop: atr: Enter a number.","problems"…
- ✓calculate_drawdown_recovery: Worked (129 ms)
- ✓calculate_kelly_criterion: Worked (117 ms)
- ✓calculate_trading_cost: Answered with an error, probably because of our sample input: Invalid input for calculate_trading_cost: stop: The stop can’t be the same as the entry. {"error":"Invalid input for calculate_trading_cost…
- ✓calculate_losing_streak: Worked (116 ms)
- and 3 more
pass
✓
Bad inputs give a clean error
All good
- ✓calculate_position_size: Refused missing required input "account" with a clear error
- ✓calculate_position_size: Refused wrong type for "account" with a clear error
- ✓calculate_risk_reward: Refused missing required input "entry" with a clear error
- ✓calculate_risk_reward: Refused wrong type for "entry" with a clear error
- ✓calculate_expectancy: Refused missing required input "winRate" with a clear error
- ✓calculate_expectancy: Refused wrong type for "winRate" with a clear error
- ✓calculate_atr_stop: Refused missing required input "entry" with a clear error
- ✓calculate_atr_stop: Refused wrong type for "entry" with a clear error
- and 13 more
pass
✓
Fast enough
All good
- ✓Connecting took 466 ms
- ✓Listing tools took 163 ms
- ✓Average tool answer: 128 ms
- ✓search_learning: Slowest tool: search_learning (169 ms)
pass
✓
No secrets leakedChecked 26 error messages: no secrets or internal details
pass
–
Tools work togetherNo tool's answer could be fed into another tool, so there were no chains to test (not counted either way)
not tested

Test it yourself

Free and open source. Same checks, same score.

npx qamcp-cli https://app.cleartape.ai/mcp

Score over time

14 Oct 202693
17 Oct 202693
18 Oct 202693
21 Oct 202693

Reviews

Coming soon: reviews from people who use Clear Tape, signed in with GitHub, one per person. Reviews never change the score.

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