Cactus
Server Details
NCI CACTUS Chemical Identifier Resolver MCP.
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- Status
- Unhealthy
- Uptime
- 29.5% over 58 days
- Last Tested
- Transport
- Streamable HTTP
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- Repository
- pipeworx-io/mcp-cactus
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- mcp-cactus
TDQS
Scored across 38 tools
Most tools target distinct resources or modes, and the descriptions go out of their way to say when to prefer one over another (e.g. entity_profile vs company_facts vs recent_changes, ask_pipeworx vs grounded vs deep_research). There are still real overlap clusters: identify and resolve both take any chemical identifier, the four ask_pipeworx/routing variants blur together, and discover_tools vs suggest_questions vs pipeworx_trending all answer 'what can I ask'. The explicit boundary language keeps misselection manageable.
Almost everything is snake_case with a clear domain prefix (polymarket_*, resolution_*, ask_pipeworx*), which makes the set scannable. Deviations are minor: some names are verb_noun (compare_entities, validate_claim) while others are bare nouns (entity_profile, company_facts, recent_changes) or bare verbs (remember, forget, resolve). No camelCase/snake_case mixing.
38 tools is heavy for a single MCP surface and sits in the range where agents must spend real effort choosing. The breadth is defensible because it is a universal data gateway spanning markets, SEC, chemistry, and memory, but several clusters (four routing tools, eight Polymarket tools) push the count past what is easily navigable.
The surface covers the full lifecycle for its major domains: memory (remember/recall/forget), subscriptions (subscribe/list/unsubscribe/recent_alerts), research, entity resolution, and market analysis, with sensible meta tools for discovery and feedback. Gaps are minor — subscriptions can only be created/cancelled (no edit), and several analysis tools are read-only — but no core workflow dead-ends.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
1 tool update
- Changed
release_calendar_markets2 fields changed- added
Output schema / properties / empty_reasonAdded value: +{ + "description": "Present ONLY on a zero-release window: \"no_releases_in_window\". The window was queried and nothing is scheduled — this is an answer, not a failure.", + "type": "string" +} - added
Output schema / properties / hintAdded value: +{ + "description": "Present ONLY on a zero-release window: what to change (usually a wider `hours`).", + "type": "string" +}
29 tool updates
- Changed
ai_visibility_check1 field changed- added
Input schema / examplesAdded value: +[ + { + "entity": "Tesla" + } +]
- Changed
ask_pipeworx3 fields changed- added
Input schema / properties / askAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - added
Input schema / properties / messageAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - changed
Input schema / properties / question / descriptionPrevious value: -"Your question or request in natural language. Accepts query, q, prompt, text, input as aliases."New value: +"Your question or request in natural language. Accepts query, q, prompt, text, input, ask, message as aliases."
- Changed
ask_pipeworx_beta4 fields changed- added
Input schema / examplesAdded value: +[ + { + "question": "What is the current US unemployment rate?" + } +] - added
Input schema / properties / askAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - added
Input schema / properties / messageAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - changed
Input schema / properties / question / descriptionPrevious value: -"Your question or request in natural language. Accepts query, q, prompt, text, input as aliases."New value: +"Your question or request in natural language. Accepts query, q, prompt, text, input, ask, message as aliases."
- Changed
ask_pipeworx_grounded4 fields changed- added
Input schema / examplesAdded value: +[ + { + "question": "What was Apple's fiscal 2023 revenue?" + } +] - added
Input schema / properties / askAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - added
Input schema / properties / messageAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - changed
Input schema / properties / question / descriptionPrevious value: -"Your question in natural language. Accepts query, q, prompt, text, input as aliases."New value: +"Your question in natural language. Accepts query, q, prompt, text, input, ask, message as aliases."
- Added
company_facts - Changed
compare_entities1 field changed- added
Input schema / examplesAdded value: +[ + { + "type": "company", + "values": [ + "AAPL", + "MSFT" + ] + } +]
- Changed
deep_research9 fields changed- added
Input schema / examplesAdded value: +[ + { + "depth": "quick", + "question": "What is the current US unemployment rate and how has it changed over the past year?" + } +] - added
Input schema / properties / askAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - added
Input schema / properties / inputAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - added
Input schema / properties / messageAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - added
Input schema / properties / promptAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - added
Input schema / properties / qAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - added
Input schema / properties / queryAdded value: +{ + "description": "Alias for question.", + "type": "string" +} - changed
Input schema / properties / question / descriptionPrevious value: -"The research question, in natural language. Broad/multi-part is fine — decomposition is the point."New value: +"The research question, in natural language. Broad/multi-part is fine — decomposition is the point. Accepts query, q, prompt, text, input, ask, message as aliases." - added
Input schema / properties / textAdded value: +{ + "description": "Alias for question.", + "type": "string" +}
- Changed
entity_profile1 field changed- added
Input schema / examplesAdded value: +[ + { + "type": "company", + "value": "AAPL" + } +]
- Changed
forget4 fields changed- added
Input schema / properties / kAdded value: +{ + "description": "Alias for key.", + "type": "string" +} - changed
Input schema / properties / key / descriptionPrevious value: -"Memory key to delete"New value: +"Memory key to delete. Accepts name, k, label as aliases." - added
Input schema / properties / labelAdded value: +{ + "description": "Alias for key.", + "type": "string" +} - added
Input schema / properties / nameAdded value: +{ + "description": "Alias for key.", + "type": "string" +}
- Changed
generate_llms_txt1 field changed- added
Input schema / examplesAdded value: +[ + { + "url": "https://pipeworx.io" + } +]
- Added
kalshi_weather_edge - Changed
pipeworx_feedback1 field changed- added
Input schema / examplesAdded value: +[ + { + "message": "Fleet #2184 smoke test: verifying pipeworx_feedback example call returns non-empty.", + "type": "other" + } +]
- Changed
pipeworx_trending1 field changed- added
Input schema / examplesAdded value: +[ + { + "window": "7d" + } +]
- Changed
polymarket_arbitrage1 field changed- added
Input schema / examplesAdded value: +[ + { + "topic": "Fed rate decision" + } +]
- Changed
polymarket_edge_tracker1 field changed- added
Input schema / examplesAdded value: +[ + { + "days": 14, + "window": "1wk" + } +]
- Changed
polymarket_edges3 fields changed- added
Input schema / examplesAdded value: +[ + { + "limit": 5, + "window": "1wk" + } +] - changed
Input schema / properties / min_edge_pp / descriptionPrevious value: -"Minimum |edge| in percentage points to include (default 0.5). Edge is evaluated NET of slippage."New value: +"Minimum |edge| in percentage points to include (default 0.5). Edge is evaluated NET of slippage and Polymarket's own taker fee." - changed
Input schema / properties / slippage_pp / descriptionPrevious value: -"Assumed execution slippage in percentage points per leg (default 0.3). Subtracted from raw |edge| before ranking and Kelly sizing. Polymarket has zero trading fees as of 2024 but bid/ask + thin depth typically eats 20-50bp per trade. Bump for very thin partitions; drop to 0 if you have a smarter fill model."New value: +"Assumed execution slippage in percentage points per leg (default 0.3), for bid/ask + thin depth cost that a last-trade price does not show. Subtracted from raw |edge| before ranking and Kelly sizing, ON TOP OF Polymarket's own taker fee — which is NOT zero (rate 0.04-0.07 depending on category, read off each market's own published fee schedule; see fees_pp_applied on every row and fees.ts for the full schedule). Bump slippage for very thin partitions; drop to 0 if you have a smarter fill model — the fee still applies regardless."
- Changed
polymarket_fill_risk1 field changed- added
Input schema / examplesAdded value: +[ + { + "market": "will-the-fed-increase-interest-rates-by-25-bps-after-the-december-2026-meeting-20260729232808636", + "side": "buy_yes", + "size_usd": 1000 + } +]
- Changed
recall4 fields changed- added
Input schema / properties / kAdded value: +{ + "description": "Alias for key.", + "type": "string" +} - changed
Input schema / properties / key / descriptionPrevious value: -"Memory key to retrieve (omit to list all keys)"New value: +"Memory key to retrieve (omit to list all keys). Accepts name, k, label as aliases." - added
Input schema / properties / labelAdded value: +{ + "description": "Alias for key.", + "type": "string" +} - added
Input schema / properties / nameAdded value: +{ + "description": "Alias for key.", + "type": "string" +}
- Changed
recent_changes1 field changed- added
Input schema / examplesAdded value: +[ + { + "since": "30d", + "type": "company", + "value": "AAPL" + } +]
- Added
release_calendar_markets - Changed
remember10 fields changed- added
Input schema / examplesAdded value: +[ + { + "key": "target_ticker", + "value": "AAPL" + } +] - added
Input schema / properties / contentAdded value: +{ + "description": "Alias for value.", + "type": "string" +} - added
Input schema / properties / dataAdded value: +{ + "description": "Alias for value.", + "type": "string" +} - added
Input schema / properties / kAdded value: +{ + "description": "Alias for key.", + "type": "string" +} - changed
Input schema / properties / key / descriptionPrevious value: -"Memory key (e.g., \"subject_property\", \"target_ticker\", \"user_preference\")"New value: +"Memory key (e.g., \"subject_property\", \"target_ticker\", \"user_preference\"). Accepts name, k, label as aliases." - added
Input schema / properties / labelAdded value: +{ + "description": "Alias for key.", + "type": "string" +} - added
Input schema / properties / nameAdded value: +{ + "description": "Alias for key.", + "type": "string" +} - added
Input schema / properties / textAdded value: +{ + "description": "Alias for value.", + "type": "string" +} - added
Input schema / properties / vAdded value: +{ + "description": "Alias for value.", + "type": "string" +} - changed
Input schema / properties / value / descriptionPrevious value: -"Value to store (any text — findings, addresses, preferences, notes)"New value: +"Value to store (any text — findings, addresses, preferences, notes). Accepts content, text, data, v as aliases; a non-string value is stored as JSON."
- Added
resolution_audit - Added
resolution_diff - Changed
resolve_entity1 field changed- added
Input schema / examplesAdded value: +[ + { + "type": "company", + "value": "AAPL" + } +]
- Changed
scan_competitor_ai_presence1 field changed- added
Input schema / examplesAdded value: +[ + { + "entities": [ + "Pipeworx", + "Zapier" + ] + } +]
- Changed
scan_dependency1 field changed- added
Input schema / examplesAdded value: +[ + { + "package": "left-pad" + } +]
- Changed
search_within1 field changed- added
Input schema / examplesAdded value: +[ + { + "query": "supply-chain risk", + "text": "Apple Inc. reported fiscal 2023 revenue of $383.285 billion, driven by strong iPhone and Services growth. Net income was $96.995 billion. The company faced supply-chain risk in China during the quarter." + } +]
- Changed
suggest_questions1 field changed- added
Input schema / examplesAdded value: +[ + { + "topic": "finance" + } +]
- Changed
validate_claim1 field changed- added
Input schema / examplesAdded value: +[ + { + "claim": "Apple's fiscal 2023 revenue was $383 billion" + } +]
2 tool updates
- Changed
bet_research2 fields changed- changed
Input schema / examplesPrevious value: -[ - { - "market": "will-bitcoin-reach-100k-in-july-2026" - }, - { - "market": "https://polymarket.com/event/will-bitcoin-hit-150k-by-june-30-2026" - } -]New value: +[ + { + "market": "will-kristi-noem-win-the-2028-republican-presidential-nomination" + }, + { + "market": "https://polymarket.com/event/will-kristi-noem-win-the-2028-republican-presidential-nomination" + } +] - changed
Input schema / properties / market / descriptionPrevious value: -"Polymarket slug (\"will-bitcoin-hit-150k-by-june-30-2026\"), full URL (\"https://polymarket.com/event/...\"), or question text (\"Will Bitcoin hit $150k by June 30?\")"New value: +"Polymarket slug (\"will-kristi-noem-win-the-2028-republican-presidential-nomination\"), full URL (\"https://polymarket.com/event/...\"), or question text (\"Will Bitcoin hit $150k?\"). Dated slugs stop resolving once they settle — Polymarket de-indexes resolved markets — so prefer an undated one."
- Changed
polymarket_kalshi_spread2 fields changed- changed
Input schema / examplesPrevious value: -[ - { - "topic": "fed" - }, - { - "topic": "btc" - } -]New value: +[ + { + "topic": "fed" + }, + { + "topic": "btc" + }, + { + "topic": "bitcoin" + }, + { + "topic": "fed rate decision" + } +] - changed
Input schema / properties / topic / descriptionPrevious value: -"Pre-mapped: fed | btc | cpi | gdp | sp500 | recession | next_pope | next_uk_pm | next_israel_pm | 2028_president"New value: +"Subject to compare. Canonical keys: fed | btc | eth | cpi | gdp | sp500 | recession | next_pope | next_uk_pm | next_israel_pm | 2028_president — but aliases and keywords resolve too (\"bitcoin\", \"fed rate decision\", \"ethereum\", \"inflation\", \"s&p 500\", \"us recession\", \"next pope\", \"2028 election\"). Check resolution.topic_matched_by in the response: \"exact\"/\"alias\" is a curated pairing, \"phrase\"/\"token\" is a keyword guess."
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