RxNorm MCP — wraps the NLM RxNav REST API (free, no auth)
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Scored across 40 tools
Multiple tools are near-indistinguishable: ask_pipeworx and ask_pipeworx_beta are literally identical right now (same router, same args, same response shape, no candidate active), and polymarket_edges, polymarket_arbitrage, bet_research, and polymarket_kalshi_spread all surface trading opportunities with overlapping scan logic. Factual-lookup meta-tools (ask_pipeworx, deep_research, entity_profile, validate_claim, company_facts) also have blurred boundaries, with descriptions telling agents to 'prefer' one over another in circumstantial ways that require careful reading to act on.
All names are snake_case and the subfamilies are internally consistent (rxnorm_*, polymarket_*, ask_pipeworx*, resolution_*), which is a strong base. However, the set mixes verb-first (discover_tools, validate_claim, scan_dependency) with noun-first (entity_profile, company_facts, polymarket_edges) conventions, and the server name 'Rxnorm' matches only 4 of 40 tools — the 'pipeworx' prefix appears sometimes at the front (pipeworx_feedback) and sometimes at the back (ask_pipeworx), with most tools carrying no domain prefix at all.
Forty tools for a server nominally dedicated to RxNorm drug terminology is a severe scope mismatch — only 4-5 tools actually serve that domain. The remaining 35 tools span prediction markets, general structured-data lookup, AI-visibility marketing, npm dependency scanning, llms.txt generation, memory, and subscriptions, which would be an excessive kitchen-sink even for a general-purpose 'Pipeworx' server and is indefensible under the 'Rxnorm' name.
The rxnorm_* family itself is reasonably complete as a lifecycle (search for RxCUI, get properties, find related drugs, get NDC identifiers), and the prediction-market, subscription, and memory clusters each have their internal CRUD/analysis coverage. But there is no single coherent domain against which to judge completeness — the server's nominal purpose covers a tiny minority of the tools, and meta-tools like ask_pipeworx subsume many of the specialized lookups, making gaps undefined.
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
ai_visibility_check1 field changedInput schema / examplesAdded value: +[
+ {
+ "entity": "Tesla"
+ }
+]ask_pipeworx_beta1 field changedInput schema / examplesAdded value: +[
+ {
+ "question": "What is the current US unemployment rate?"
+ }
+]ask_pipeworx_grounded1 field changedInput schema / examplesAdded value: +[
+ {
+ "question": "What was Apple's fiscal 2023 revenue?"
+ }
+]company_facts5 fields changedInput schema / examplesAdded value: +[
+ {
+ "attribute": "revenue",
+ "company": "AAPL",
+ "period": {
+ "fiscal_year": 2023,
+ "type": "annual"
+ }
+ }
+]Input schema / properties / as_ofAdded value: +{
+ "description": "Past ISO timestamp with timezone. Replay the latest answer actually recorded by that instant; no invented history or live fallback.",
+ "type": "string"
+}Input schema / properties / exclude_publishersAdded value: +{
+ "description": "Publisher ids forbidden for fact retrieval: sec, fmp, alphavantage. Case and surrounding whitespace are normalized; unknown ids are refused. Excluding sec currently leaves no eligible fact source and returns unavailable/sources_excluded with the selection reasons. Identity and fiscal-calendar lookups may still use SEC; no excluded financial concept is fetched.",
+ "items": {
+ "type": "string"
+ },
+ "type": "array"
+}Input schema / properties / freshnessAdded value: +{
+ "description": "cached (default) permits an eligible stored answer; fresh requires an upstream refresh and never silently falls back to stale data.",
+ "enum": [
+ "cached",
+ "fresh"
+ ],
+ "type": "string"
+}Input schema / properties / max_ageAdded value: +{
+ "description": "Maximum age in seconds of the upstream publication, not our fetch. Older or undated facts are withheld.",
+ "maximum": 3155760000,
+ "minimum": 0,
+ "type": "number"
+}compare_entities1 field changedInput schema / examplesAdded value: +[
+ {
+ "type": "company",
+ "values": [
+ "AAPL",
+ "MSFT"
+ ]
+ }
+]deep_research1 field changedInput schema / examplesAdded value: +[
+ {
+ "depth": "quick",
+ "question": "What is the current US unemployment rate and how has it changed over the past year?"
+ }
+]entity_profile1 field changedInput schema / examplesAdded value: +[
+ {
+ "type": "company",
+ "value": "AAPL"
+ }
+]generate_llms_txt1 field changedInput schema / examplesAdded value: +[
+ {
+ "url": "https://pipeworx.io"
+ }
+]pipeworx_feedback1 field changedInput schema / examplesAdded value: +[
+ {
+ "message": "Fleet #2184 smoke test: verifying pipeworx_feedback example call returns non-empty.",
+ "type": "other"
+ }
+]pipeworx_trending1 field changedInput schema / examplesAdded value: +[
+ {
+ "window": "7d"
+ }
+]polymarket_arbitrage1 field changedInput schema / examplesAdded value: +[
+ {
+ "topic": "Fed rate decision"
+ }
+]polymarket_edge_tracker1 field changedInput schema / examplesAdded value: +[
+ {
+ "days": 14,
+ "window": "1wk"
+ }
+]polymarket_edges3 fields changedInput schema / examplesAdded value: +[
+ {
+ "limit": 5,
+ "window": "1wk"
+ }
+]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."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."polymarket_fill_risk1 field changedInput 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
+ }
+]recent_changes1 field changedInput schema / examplesAdded value: +[
+ {
+ "since": "30d",
+ "type": "company",
+ "value": "AAPL"
+ }
+]remember1 field changedInput schema / examplesAdded value: +[
+ {
+ "key": "target_ticker",
+ "value": "AAPL"
+ }
+]resolve_entity1 field changedInput schema / examplesAdded value: +[
+ {
+ "type": "company",
+ "value": "AAPL"
+ }
+]scan_competitor_ai_presence1 field changedInput schema / examplesAdded value: +[
+ {
+ "entities": [
+ "Pipeworx",
+ "Zapier"
+ ]
+ }
+]scan_dependency1 field changedInput schema / examplesAdded value: +[
+ {
+ "package": "left-pad"
+ }
+]search_within1 field changedInput 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."
+ }
+]suggest_questions1 field changedInput schema / examplesAdded value: +[
+ {
+ "topic": "finance"
+ }
+]validate_claim1 field changedInput schema / examplesAdded value: +[
+ {
+ "claim": "Apple's fiscal 2023 revenue was $383 billion"
+ }
+]company_factskalshi_weather_edgerelease_calendar_marketsresolution_auditresolution_diffbet_research2 fields changedInput schema / examplesPrevious value: -[
- {
- "market": "when-will-bitcoin-hit-150k"
- },
- {
- "market": "https://polymarket.com/event/when-will-bitcoin-hit-150k"
- }
-]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"
+ }
+]Input schema / properties / market / descriptionPrevious value: -"Polymarket slug (\"when-will-bitcoin-hit-150k\"), 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."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."polymarket_kalshi_spread1 field changedInput schema / examplesPrevious value: -[
- {
- "topic": "fed"
- },
- {
- "topic": "btc"
- }
-]New value: +[
+ {
+ "topic": "fed"
+ },
+ {
+ "topic": "btc"
+ },
+ {
+ "topic": "bitcoin"
+ },
+ {
+ "topic": "fed rate decision"
+ }
+]bet_research2 fields changedInput 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": "when-will-bitcoin-hit-150k"
+ },
+ {
+ "market": "https://polymarket.com/event/when-will-bitcoin-hit-150k"
+ }
+]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 (\"when-will-bitcoin-hit-150k\"), 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."polymarket_kalshi_spread1 field changedInput 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."UMLS MCP — wraps the NLM UMLS Terminology Services REST API (uts-ws.nlm.nih.gov/rest)
DrugBank MCP — wraps the DrugBank Clinical API (api.drugbank.com)
PubMed MCP — wraps the NCBI E-utilities API (biomedical literature, free, no auth)
Nutrition MCP — wraps Open Food Facts API (free, no auth)
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