Spain Blocks Polymarket; Kalshi Arb Bot Goes Live

Spain Pulls the Plug on Polymarket and Kalshi

The biggest story today isn't a bot — it's a regulator. Spain has formally blocked access to both Polymarket and Kalshi, citing the absence of a gambling license. This is the first major EU-level enforcement action targeting both leading prediction market platforms simultaneously, and it signals that the regulatory window in Europe may be narrowing faster than operators anticipated. If you're running bots with European infrastructure or VPN-sensitive execution pipelines, audit your routing now. Watch for copycat actions from other EU member states in the coming weeks.

Separately, and somewhat relatedly: HN surfaced a story about Polymarket gamblers threatening a journalist over Iran missile coverage. The prediction market space is no longer a niche hobby. That visibility cuts both ways.

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New Bots: 6 Worth Cloning

**tinli** is the headline find today. It implements cross-venue arbitrage detection between Kalshi and Polymarket with fee-aware pricing and a risk engine that accounts for locked positions. Given Spain's news, cross-venue exposure carries new regulatory surface area — but the technical approach is sound and the fee modeling is more rigorous than most arb bots we've reviewed this year.

**auspex** takes a trigger-based approach to market screening: it calculates the distance between current prices and resolution triggers, scores resolution confidence against live data sources, and fires alerts when trigger events occur across crypto markets. Clean architecture for anyone running systematic crypto-event books.

**polymarket-bot** is a hybrid ML ensemble combining LightGBM and XGBoost with LLM-generated signals, delivering alerts via Telegram. The multi-factor architecture is reasonably well-structured. Worth cloning for the feature engineering pipeline alone, though LLM signal reliability will depend heavily on your prompt discipline and model selection.

**polymarket-copy-trading-skill** implements AI-agent-driven copy trading via the MCP protocol. It tracks whale wallets, generates copy signals, and executes against a $10k mock portfolio for paper trading. The MCP integration is novel. Treat the paper trading outputs as calibration data before you consider any live deployment.

**polymarket-tui** is a terminal UI for manual operators: real-time order book visualization, charting, portfolio management, and direct order execution via keyboard shortcuts. Not a strategy bot, but a serious quality-of-life upgrade for anyone still navigating the web UI during fast-moving markets.

One additional repo rounded out the six worth cloning but showed no distinguishing technical characteristics beyond solid boilerplate scaffolding.

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Security: Two Confirmed Malware Repos, One Spam Campaign

This section is not optional reading. Two repos require immediate avoidance:

**HUGE_SIZE repo with anomalous 21.7GB payload.** A 21.7GB repository masquerading as a trading tool is not a trading tool. Do not clone, do not run, do not inspect on a non-sandboxed machine. Flag and report.

**460KB exact-size malware template clone.** The exact-size match is a known fingerprint for templated credential-harvesting payloads that have circulated in the crypto tooling space since late 2024. Same verdict: hard avoid.

Additionally, a possible star-farming campaign is active on polymorphic bot repos — artificially inflated star counts are being used to surface low-quality or potentially hostile forks in search results. Do not use GitHub star count as a proxy for repo legitimacy this week.

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Alpha: Research Worth Reading

Three papers surfaced today. The most operationally relevant: an AI pipeline for clustering prediction markets by topic and detecting implicit equivalences and contradictions across platforms. If you're running cross-platform books, this is directly applicable to position overlap detection.

Second: a long-context LLM system for M&A binary outcome prediction, combining expert-guided context engineering with finetuning. High-accuracy results on deal outcome classification — relevant for anyone active in corporate event markets.

Third: a path-signature mathematical framework for optimal execution in statistical arbitrage, modeling trading speed and alpha as functionals of historical path data with inventory risk and terminal constraints baked in. Dense, but the execution modeling is more sophisticated than anything in the current open-source Polymarket tooling stack.

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What to Watch

Spain's block is the leading indicator. Monitor for French and German regulatory bodies making similar moves before end of Q3. On the tooling side, the tinli arb bot warrants close evaluation — cross-venue inefficiencies between Kalshi and Polymarket remain underexploited, and a fee-aware implementation is the right foundation to build on.