# org.latha.island.reasoning

> Published by [nandi.uk](https://lexicon.garden/identity/did:plc:ngokl2gnmpbvuvrfckja3g7p)

## Description

Provenance for a Strata claim — why we believe something, what method produced it, and what it justifies.

## Links

- [View on Lexicon Garden](https://lexicon.garden/lexicon/did:plc:ngokl2gnmpbvuvrfckja3g7p/org.latha.island.reasoning)
- [Documentation](https://lexicon.garden/lexicon/did:plc:ngokl2gnmpbvuvrfckja3g7p/org.latha.island.reasoning/docs)
- [Examples](https://lexicon.garden/lexicon/did:plc:ngokl2gnmpbvuvrfckja3g7p/org.latha.island.reasoning/examples)

## Definitions

### `org.latha.island.reasoning`

**Type**: `record`

A reasoning record that provides provenance for a claim in Strata. Links a question or claim to the method that produced it, the evidence supporting it, and the claim it justifies. Forms the backbone of the Strata provenance graph.

**Key**: `tid`

| Property | Type | Required | Description |
|----------|------|----------|-------------|
| `method` | `string` | Yes | How the claim was produced. Open set — future methods can be added without schema changes. |
| `evidence` | `string` | No | Supporting evidence, reasoning chain, or explanation of why this method supports the claim. |
| `question` | `string` | Yes | The question or claim being justified. |
| `createdAt` | `string` (datetime) | Yes | When this reasoning was recorded in Strata. |
| `justifies` | `string` (at-uri) | Yes | AT-URI of the claim this reasoning supports (e.g. 'at://did:plc:.../org.latha.island.citation/3tx...'). |
| `sourceUrl` | `string` (uri) | No | URL of the source if the reasoning came from a web search. |
| `confidence` | `string` | Yes | Confidence level in the reasoning. |

## Raw Schema

```json
{
  "id": "org.latha.island.reasoning",
  "defs": {
    "main": {
      "key": "tid",
      "type": "record",
      "record": {
        "type": "object",
        "required": [
          "question",
          "method",
          "justifies",
          "confidence",
          "createdAt"
        ],
        "properties": {
          "method": {
            "type": "string",
            "description": "How the claim was produced. Open set — future methods can be added without schema changes.",
            "knownValues": [
              "org.latha.island.defs#webSearch",
              "org.latha.island.defs#humanInput",
              "org.latha.island.defs#inference",
              "org.latha.island.defs#carryLookup"
            ]
          },
          "evidence": {
            "type": "string",
            "description": "Supporting evidence, reasoning chain, or explanation of why this method supports the claim.",
            "maxGraphemes": 3000
          },
          "question": {
            "type": "string",
            "description": "The question or claim being justified.",
            "maxGraphemes": 500
          },
          "createdAt": {
            "type": "string",
            "format": "datetime",
            "description": "When this reasoning was recorded in Strata."
          },
          "justifies": {
            "type": "string",
            "format": "at-uri",
            "description": "AT-URI of the claim this reasoning supports (e.g. 'at://did:plc:.../org.latha.island.citation/3tx...')."
          },
          "sourceUrl": {
            "type": "string",
            "format": "uri",
            "description": "URL of the source if the reasoning came from a web search."
          },
          "confidence": {
            "enum": [
              "org.latha.island.defs#high",
              "org.latha.island.defs#medium",
              "org.latha.island.defs#low"
            ],
            "type": "string",
            "description": "Confidence level in the reasoning."
          }
        }
      },
      "description": "A reasoning record that provides provenance for a claim in Strata. Links a question or claim to the method that produced it, the evidence supporting it, and the claim it justifies. Forms the backbone of the Strata provenance graph."
    }
  },
  "$type": "com.atproto.lexicon.schema",
  "lexicon": 1,
  "description": "Provenance for a Strata claim — why we believe something, what method produced it, and what it justifies."
}
```