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Prediction-market order-book depth and history for AI agents.
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 8 days ago Due for re-check
A server can change after it's graded. Re-run the automated scan to refresh this report.
This grade is deterministic and reproducible: the same server surface always yields the same grade under a given algorithm version. It is a real automated assessment computed by the MCPGrade engine from what the probe actually observed — not a fabricated or opinion score. It is not a manual human pentest, so it can miss context-specific risks.
Every signal below was measured directly by the automated probe. The grade is derived only from evidence like this — nothing is assumed.
The depthfeed MCP server exposes 14 tools, focused primarily on general-purpose capabilities. Its published description reads: "Prediction-market order-book depth and history for AI agents". It communicates over Streamable HTTP using the 2026-07-28 protocol revision, and does not require authorization to connect. MCPGrade currently rates depthfeed F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Cross-tool shadowing" and "Data-exfiltration parameters". This report is a deterministic, reproducible automated assessment: the same observed surface always yields the same grade under a given algorithm version, and it is refreshed as new scans arrive and free to read — but it is not a substitute for a manual human security review. Always re-check depthfeed's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add depthfeed to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://api.depthfeed.com/mcpStreamable HTTP transport. This is the MCP endpoint, not a website — paste it into your MCP client server list rather than a browser.
Captured passively during the read-only scan. Click any value to find servers that match it.
The tools this server advertises via tools/list — names, purposes, and the parameters each accepts, exactly as enumerated read-only.
Paid data plan required. Return every active Polymarket market across all categories, not only crypto. AI execution credits do not unlock this export. The text result is one LLM-readable line per mark
List Polymarket up/down crypto prediction markets for a coin. Returns market id, slug, window, status and timing. Use the returned id/slug with polymarket_get_market or polymarket_get_snapshots.
Fetch a single Polymarket market by id (market_id) or by slug. Provide exactly one of market_id or slug.
Historical order-book snapshots (time series) for one Polymarket market. Use interval to downsample and include_orderbook for the full ladder. History depth is gated by plan.
List Kalshi crypto markets (full yes/no depth, DepthFeed-exclusive). Requires a paid plan; keyless/Free returns a 402 upsell.
Latest yes/no order-book depth for a Kalshi market by ticker. Requires a paid plan.
Historical yes/no depth snapshots for a Kalshi market by ticker. Requires a paid plan; history gated by plan window.
Hourly OHLC candles (yes bid, yes ask, traded price) plus volume and open interest for a Kalshi market. This is the only history that exists for non-crypto Kalshi markets — Kalshi serves no historical
List currently-open Limitless (Base CLOB) markets, DepthFeed-exclusive. Requires a paid plan.
Latest L2 depth (bids desc / asks asc) for a Limitless market by slug. Requires a paid plan.
Historical L2 depth snapshots (time series) for a Limitless market by slug. Requires a paid plan; history gated by plan window.
OHLCV price bars for US equities and ETFs, Binance spot pairs, and perpetual futures. One minute is the finest resolution; 5Min, 15Min, 1Hour and 1Day are rolled up from it and say so with `derived`.
Cross-venue top-of-book snapshot for all assets across Polymarket, Kalshi, and Binance — a one-shot overview of the current state. No arguments.
Show the current session's plan, rate limits, history window, and coin access (reflects keyless demo vs. your API key).
Sorted worst-first. Each finding shows its severity, what it means, its OWASP MCP Top-10 mapping, and a recommended fix — the check id links to the exact methodology row that produced it.
tool: polymarket_search_markets
A tool description tries to alter the model’s use of another tool.
ed id/slug with polymarket_get_market or polymarket_get_snapshots.RecommendationDescriptions must describe only their own tool.
tool: polymarket_get_snapshots
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
he full ladder. History depth is gated by plan. {"properties":{"coin":{RecommendationRemove side-channel parameters; constrain tool inputs.
tool: (server instructions)
A tool description tries to alter the model’s use of another tool.
a plans can use polymarket_all_markets for the complete current Polymarket universe inRecommendationDescriptions must describe only their own tool.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
tool: polymarket_all_markets
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: polymarket_search_markets
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: polymarket_get_market
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: polymarket_get_snapshots
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: kalshi_search_markets
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: kalshi_get_orderbook
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: kalshi_get_snapshots
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: kalshi_get_candles
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: limitless_search_markets
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: limitless_get_orderbook
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: limitless_get_snapshots
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: bars
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: screener
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: whoami
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
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