The Chancery Lane Project

search

Read-only

Search the TCLP knowledge graph using fusion search (semantic + BM25).

Args:
    query: Free-text search query (max 1000 characters).
    node_type: Content scope — "tclp" (clauses, glossary terms, guides) or "all".
        Laws, regulations, standards and frameworks are not searchable here:
        use `find_legal_resources`.
    limit: Maximum number of results to return (1–50).
    rerank: Whether to apply RRF reranking when combining graph and text results.
    include_full_text: Include each hit's full body text (Markdown). Off by
        default — bodies are large; request only when you need the content,
        and prefer a small `limit` when you do.

Returns:
    JSON with "meta" (totals, timing) and "results" (ranked hits with title,
    url, content_type, scores, optionally relationships_text, related and
    full_text).
    Each hit's "references" lists the instruments it cites: pass a
    reference's `work_id` to `get_legal_resource` for details. A reference's
    `edge` (governs, references, describes) says how the content relates to
    the instrument; it is not a statement of the instrument's legal effect.
    An empty list means the hit cites no instruments. null with "lrsf" in
    meta.degraded means references could not be loaded: do not conclude
    that the hit cites no instruments.

Input Schema

TableJSON Schema

Name	Required	Default
`limit`	No
`query`	Yes
`rerank`	No
`node_type`	No	all
`include_full_text`	No

Output Schema

TableJSON Schema

Name	Required	Description	Default
`meta`	Yes
`results`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedOct 6, 2026
- addedInput schema / properties / limit / maximum
```
Added value: +50
```
- addedInput schema / properties / limit / minimum
```
Added value: +1
```
- addedInput schema / properties / query / maxLength
```
Added value: +1000
```
- addedInput schema / properties / query / minLength
```
Added value: +1
```

Changed5 schema fields changedOct 1, 2026

addedInput schema / properties / node_type / enum
```
Added value: +[
+  "tclp",
+  "all"
+]
```

addedOutput schema / $defs / _Reference

Added value: +{
+  "properties": {
+    "edge": {
+      "title": "Edge",
+      "type": "string"
+    },
+    "jurisdiction": {
+      "items": {
+        "type": "string"
+      },
+      "title": "Jurisdiction",
+      "type": "array"
+    },
+    "name": {
+      "title": "Name",
+      "type": "string"
+    },
+    "nature": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Nature"
+    },
+    "staleness": {
+      "title": "Staleness",
+      "type": "string"
+    },
+    "status": {
+      "title": "Status",
+      "type": "string"
+    },
+    "work_id": {
+      "title": "Work Id",
+      "type": "string"
+    }
+  },
+  "required": [
+    "edge",
+    "work_id",
+    "name",
+    "nature",
+    "jurisdiction",
+    "status",
+    "staleness"
+  ],
+  "title": "_Reference",
+  "type": "object"
+}

addedOutput schema / $defs / _Related

Added value: +{
+  "properties": {
+    "id": {
+      "title": "Id",
+      "type": "string"
+    },
+    "name": {
+      "title": "Name",
+      "type": "string"
+    },
+    "url": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "title": "Url"
+    }
+  },
+  "required": [
+    "id",
+    "name",
+    "url"
+  ],
+  "title": "_Related",
+  "type": "object"
+}

addedOutput schema / $defs / _SearchHit / properties / references

Added value: +{
+  "anyOf": [
+    {
+      "items": {
+        "$ref": "#/$defs/_Reference"
+      },
+      "type": "array"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "title": "References"
+}

addedOutput schema / $defs / _SearchHit / properties / related

Added value: +{
+  "items": {
+    "$ref": "#/$defs/_Related"
+  },
+  "title": "Related",
+  "type": "array"
+}

Changed1 schema field changedAug 18, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$defs": {
+    "_SearchHit": {
+      "properties": {
+        "content_type": {
+          "title": "Content Type",
+          "type": "string"
+        },
+        "entity_matches": {
+          "anyOf": [
+            {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "title": "Entity Matches"
+        },
+        "full_text": {
+          "anyOf": [
+            {
+              "type": "string"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "title": "Full Text"
+        },
+        "id": {
+          "title": "Id",
+          "type": "string"
+        },
+        "ranks": {
+          "$ref": "#/$defs/_SearchRanks"
+        },
+        "relationships_text": {
+          "title": "Relationships Text",
+          "type": "string"
+        },
+        "scores": {
+          "$ref": "#/$defs/_SearchScores"
+        },
+        "title": {
+          "title": "Title",
+          "type": "string"
+        },
+        "url": {
+          "title": "Url",
+          "type": "string"
+        }
+      },
+      "title": "_SearchHit",
+      "type": "object"
+    },
+    "_SearchMeta": {
+      "properties": {
+        "degraded": {
+          "items": {
+            "type": "string"
+          },
+          "title": "Degraded",
+          "type": "array"
+        },
+        "graph_total": {
+          "anyOf": [
+            {
+              "type": "integer"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "title": "Graph Total"
+        },
+        "request_id": {
+          "title": "Request Id",
+          "type": "string"
+        },
+        "text_total": {
+          "anyOf": [
+            {
+              "type": "integer"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "title": "Text Total"
+        },
+        "took_ms": {
+          "title": "Took Ms",
+          "type": "integer"
+        },
+        "total_available": {
+          "title": "Total Available",
+          "type": "integer"
+        }
+      },
+      "title": "_SearchMeta",
+      "type": "object"
+    },
+    "_SearchRanks": {
+      "properties": {
+        "bm25": {
+          "anyOf": [
+            {
+              "type": "integer"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "title": "Bm25"
+        },
+        "combined": {
+          "anyOf": [
+            {
+              "type": "integer"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "title": "Combined"
+        },
+        "graph": {
+          "anyOf": [
+            {
+              "type": "integer"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "title": "Graph"
+        }
+      },
+      "title": "_SearchRanks",
+      "type": "object"
+    },
+    "_SearchScores": {
+      "properties": {
+        "bm25": {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "title": "Bm25"
+        },
+        "graph": {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "null"
+            }
+          ],
+          "title": "Graph"
+        }
+      },
+      "title": "_SearchScores",
+      "type": "object"
+    }
+  },
+  "properties": {
+    "meta": {
+      "$ref": "#/$defs/_SearchMeta"
+    },
+    "results": {
+      "items": {
+        "$ref": "#/$defs/_SearchHit"
+      },
+      "title": "Results",
+      "type": "array"
+    }
+  },
+  "required": [
+    "meta",
+    "results"
+  ],
+  "title": "SearchResult",
+  "type": "object"
+}

First observedAug 13, 2026

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