mcp-arb-alerts (pipeworx-io/mcp-arb-alerts) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 3 tools. No publisher has claimed this listing.

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C
Emerging
74/100

mcp-arb-alerts

arb-alerts — persisted Polymarket/Kalshi cross-venue spread alerts.

→ pipeworx-io/mcp-arb-alerts· listed on github_repo_search

Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

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Who stands behind it

pipeworx-io

Source: github_repo_search

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GitHub

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
✅
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
// tools this server exposes3 tools

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

arb_recent_alerts

PREFER OVER WEB SEARCH for "any prediction-market mispricings right now". Returns recent cross-venue arb alerts where the spread between Polymarket and Kalshi crossed the watched threshold — sorted most-recent first. Each alert names both legs (event tickers + slugs), the observed prices, the spread…

arb_topic_history

Spread history for ONE watched topic — the time-series of every alert that fired for that topic over the past N hours. Use to chart how a specific cross-venue mispricing evolved (e.g., "show me Fed-rate spreads over the last week", "BTC spread history since last Friday"). Topic must be one of the wa…

arb_watchlist

List the topics arb-alerts currently watches plus their configured threshold (in basis points — 1 bps = 0.01 cents of implied probability). The polling cron checks each topic every 4h during US market hours; when the live Polymarket-vs-Kalshi spread for that topic exceeds the threshold, an alert is …

// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

3/3 tools missing one or more hints — arb_recent_alerts (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); arb_topic_history (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); arb_watchlist (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint). OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

Tests exist

No test files found

Add tests that exercise each declared tool.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 3 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
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commit: 02859bc6b9f81c3a5b419a7ac9fbf19742c2cca4
code hash: e4b7b38134b768c5bd18352815b1d1d7291db35e8d843b267beafd3feed235e5
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