Opensky
Server Details
OpenSky MCP — OpenSky Network API (free, no auth for anonymous access)
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- Status
- Unhealthy
- Uptime
- 45.4% over 38 days
- Last Tested
- Transport
- Streamable HTTP
- URL
- Repository
- pipeworx-io/mcp-opensky
- GitHub Stars
- 0
- Server Listing
- mcp-opensky
TDQS
Scored across 40 tools
Several tools have heavily overlapping purposes: ask_pipeworx, ask_pipeworx_beta, ask_pipeworx_grounded, deep_research, entity_profile, and compare_entities all answer data questions, differing mostly in mode or scope. The prediction market family (polymarket_edges, polymarket_edge_tracker, polymarket_fill_risk, polymarket_kalshi_spread, bet_research, resolution_audit, resolution_diff) also has fuzzy boundaries. While descriptions are extremely detailed, an agent could easily select the wrong tool when faced with this many near-synonyms.
Tool names follow no single pattern: get_flights, compare_entities, and scan_dependency use verb_noun; company_facts, entity_profile, and polymarket_edges are noun phrases; ask_pipeworx and resolve_entity mix verb+object; forget, recall, and subscribe are bare verbs. The polymarket_* and ask_pipeworx* groups are internally consistent, but the overall set mixes conventions, making it hard to predict tool names from their domain.
With 40 tools, the server is heavy even for a broad data platform. The scope is wide (company data, prediction markets, flights, memory, subscriptions, meta-tools), but many tools overlap or serve niche functions (e.g. generate_llms_txt, scan_competitor_ai_presence) that feel tangential. The number far exceeds the 25-tool threshold where agents start to struggle with selection.
The tool surface covers the core behaviors of a data/query platform: lookup (ask_pipeworx), deep research (deep_research), entity resolution (resolve_entity), comparison (compare_entities), claim validation (validate_claim), and memory (remember/recall/forget). Subscription management and recent alerts are also present. Minor gaps exist (e.g. no direct flight history, the court release calendar is always empty), but these are documented limitations rather than missing functionality.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
5 tool updates
- Added
company_facts - Added
kalshi_weather_edge - Added
release_calendar_markets - Added
resolution_audit - Added
resolution_diff
1 tool update
- Changed
bet_research2 fields changed- changed
Input 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" + } +] - changed
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."
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": "when-will-bitcoin-hit-150k" + }, + { + "market": "https://polymarket.com/event/when-will-bitcoin-hit-150k" + } +] - 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 (\"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."
- 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."
Related MCP Connectors
Flights MCP — wraps OpenSky Network API (free, no auth required)
Aviationstack MCP — global flight + airport + airline data
FlightAware MCP — wraps FlightAware AeroAPI v4 (aeroapi.flightaware.com)
CourtListener MCP — Free Law Project's CourtListener API (free, no auth required for basic access)
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