"Sonar" matching MCP tools:

• perplexity_search

  Heista

  Web-grounded search via Perplexity Sonar Pro. Returns synthesized answer text plus a structured sources[] array (url + title) the caller can evaluate per the research.foundation four-tier source ladder. Optional recency_filter (hour/day/week/month/year) for fast-decay topics. Optional search_domain_filter (up to 10 domains) for triangulating against known-authoritative sources. Use this whenever a specialist needs current, web-grounded information — landscape scans, trend research, evidence queries, counter-evidence checks, named-entity lookups. Pair with the research.foundation skill (always-on craft baseline) and the research.methodologies.desk-synthesis skill (6-phase workflow) for production-grade output. The agent decomposes the brief into sub-questions BEFORE calling this — one focused query per call, not a multi-question batch. Cost is real (~$0.005-0.015 per query); the agent should budget calls per research.foundation §6 (fact-check 1-3, single comparison 3-8, landscape scan 8-20).

  Connector

• search_research

  Heista

  Structured fact-check + numerical research via Perplexity Sonar Reasoning Pro (Gateway-routed). Returns synthesized answer text plus structured sources[] with direct URLs to primary sources. Use for: specific numerical claims with methodology context, fact-check against primary sources, effect sizes + confidence intervals, earnings transcripts / SEC filings / research papers. Per Phase 3.5 empirical A/B: 2-3× cheaper than sonar-pro with comparable or better quality on structured research. Real Meta IR press releases + earnings transcripts on Desk. 17 cites on Quant. NOT for: Reddit/X/community → use search_community. NOT for: broad topic landscapes → use search.

  Connector

• solar

  InfraNode

  Get solar irradiation and normalized PV yield potential for a German city. Sourced from PVGIS (European Commission JRC). Returns a multi-year climatological average for the city centre, normalized to a 1 kWp system at the optimal tilt: annual PV yield (kWh/kWp), annual global irradiation (kWh/m2), the optimal tilt/azimuth and 12 monthly values. All 84 cities are covered. Read-only.

  Connector

• solar-intel

  The Stall

  Solar irradiance analysis and 7-day forecast for any location. Returns GHI (global horizontal irradiance), DNI (direct normal), DHI (diffuse), peak sun hours, cloud cover, sunrise/sunset, and panel yield estimate for a 1 kW system. Useful for rooftop solar feasibility, agricultural planning, EV charging optimization, and energy market analysis. Free upstream: Open-Meteo (no API key, no rate limits). Undercuts stableenrich.dev/api/google-maps/solar by 31%.

  Connector