Skip to main content
LLM-powered search. For complex, natural-language questions that go beyond structured filtering. Returns markdown-formatted answers with full explainability and source citations.
  • Automatically identifies and extracts entities from search results
  • Provides structured context that’s ready to use in your applications

​
Example:

{"input": "What are the most promising climate tech startups in Southern Europe?"}
Every response includes four parts:

Answer

A synthesized, structured answer in markdown — ready to use directly.
## Most Promising Climate Tech Startups in Southern Europe

### Renewable Energy & Energy Storage

**Altano Energy (Spain)** — Madrid-based, developing renewable energy projects
across Spain. Secured €60M Series C in 2025 from M&G Investments and Pioneer
Point Partners.

**BeePlanet Factory (Spain)** — Navarre-based, manufactures energy storage from
EV batteries. Raised €5M, building BeeCycle recycling plant with 10,000 tons/year
capacity by 2026.

**Matteco (Spain)** — Paterna-based, advanced materials for green hydrogen.
€16.3M raised.

### Market Trends

**Spain** leads Southern Europe with 16 cleantech VC deals in Q1 2025.
**Italy** and **Portugal** emerging as hubs via EU Innovation Fund projects.
**Cleantech for Iberia** drove a 37% increase in clean tech investment.
Every claim in the answer is traced back to specific source documents — so you know exactly why something was said.
[
  {
    "content": "Altano Energy secured a €60 million Series C round in July 2025 from Pioneer Point Partners and M&G Investments.",
    "references": ["f22a1a96-6234-48d7-95c2-8b049f00fdab"]
  },
  {
    "content": "BeePlanet Factory manufactures energy-storage systems from second-life EV batteries and raised approximately $5.3 million.",
    "references": ["521038fd-3c36-4fd4-a6e3-9aa2c0be598d"]
  },
  {
    "content": "Spain accounts for the largest share of cleantech VC activity in Southern Europe, recording 16 deals in Q1 2025.",
    "references": ["27735c7a-f365-48f7-9db4-cf406ce7033e"]
  }
]
Each reference UUID links to a source document in the Sources section below.
Full provenance for every claim — publisher, article title, and URL. Nothing is a black box.
[
  {
    "id": "f22a1a96-6234-48d7-95c2-8b049f00fdab",
    "content": "Altano Energy – €60m (Series C, Jul 2025). Develops and operates renewable energy projects across Spain...",
    "origins": [
      {
        "source": {"name": "Impact Loop", "url": "https://www.impactloop.com/"},
        "document": {
          "name": "Europe's top 25 climate tech funding rounds this year",
          "url": "https://www.impactloop.com/artikel/europe-s-25-largest-climate-tech-fundraises-funding-2025-and-the-investors-behind-them"
        }
      }
    ]
  },
  {
    "id": "521038fd-3c36-4fd4-a6e3-9aa2c0be598d",
    "content": "Matteco: $16.3m raised. Producer of advanced materials for green hydrogen...",
    "origins": [
      {
        "source": {"name": "Seedtable", "url": "https://www.seedtable.com/"},
        "document": {
          "name": "11 Best Climate Tech Green Tech Startups in Spain - 2025",
          "url": "https://www.seedtable.com/best-climate-tech-green-tech-startups-in-spain"
        }
      }
    ]
  },
  {
    "id": "27735c7a-f365-48f7-9db4-cf406ce7033e",
    "content": "Cleantech VC deals took place in 17 of 27 EU member states in Q1 2025. Germany led with 36 deals, followed by Netherlands and France (20 each), Spain (16)...",
    "origins": [
      {
        "source": {"name": "Cleantech for Europe", "url": "https://www.cleantechforeurope.com/"},
        "document": {
          "name": "Cleantech Q1 Briefing 2025",
          "url": "https://www.cleantechforeurope.com/publications/cleantech-q1-briefing-2025"
        }
      }
    ]
  }
]
Every entity mentioned is automatically identified, typed, and assigned a Cala ID — ready to query further with get_entity.
[
  {"id": 57463, "name": "Altano Energy", "entity_type": "ORG"},
  {"id": 57466, "name": "BeePlanet Factory", "entity_type": "ORG"},
  {"id": 36466, "name": "Matteco", "entity_type": "ORG"},
  {"id": 26, "name": "Spain", "entity_type": "GPE"},
  {"id": 155, "name": "Madrid", "entity_type": "GPE"},
  {"id": 57464, "name": "M&G Investments", "entity_type": "ORG"},
  {"id": 57465, "name": "Pioneer Point Partners", "entity_type": "ORG"},
  {"id": 5323, "name": "Navarre", "entity_type": "GPE"},
  {"id": 57467, "name": "BeeCycle", "entity_type": "FAC"},
  {"id": 30, "name": "Barcelona", "entity_type": "GPE"},
  {"id": 1075, "name": "Italy", "entity_type": "GPE"},
  {"id": 458, "name": "Portugal", "entity_type": "GPE"},
  {"id": 57469, "name": "European Union Innovation Fund", "entity_type": "ORG"},
  {"id": 57470, "name": "Cleantech for Iberia", "entity_type": "ORG"}
]
Use these IDs to get full entity profiles: GET /v1/knowledge/entities/57463 returns everything Cala knows about Altano Energy.

​
What you get back:

FieldDescription
contentA synthesized markdown answer with structured sections
explainabilityReasoning chain — each claim linked to specific source documents by UUID
contextSource documents with full provenance: publisher name, article title, URL
entitiesEvery entity mentioned, with Cala IDs and types (ORG, GPE, FAC, LOC, etc.)