Archive Record Children (UK National Archives Discovery Catalogue)

tnadiscovery/list-record-children

Lists the child records directly beneath one Discovery archive record, such as the series under a department's records or the items under a series. Each child has its id, level, reference, title, covering dates and scope and content. Titles and descriptions come as XML-style markup text. A record with no children, or an id that does not exist, returns an empty list. Shows the first children only, 1 to 50. Contains public sector information licensed under the Open Government Licence v3.0; served by Eden Engine, not an official National Archives product.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $5.

Data source

The National Archives

Contains public sector information licensed under the Open Government Licence v3.0. Source: The National Archives, Discovery catalogue. Served by Eden Engine; not an official The National Archives product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "tnadiscovery/list-record-children" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "tnadiscovery/list-record-children" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "tnadiscovery/list-record-children", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "tnadiscovery/list-record-children", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 20, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "pattern": "^[A-Za-z0-9-]{1,64}$",
      "description": "The Discovery record id of the parent, as returned in the id field of a search result or a record entry, for example C4."
    },
    "limit": {
      "type": "integer",
      "default": 10,
      "maximum": 50,
      "minimum": 1,
      "description": "How many children to return, 1 to 50. When hasMoreAfterLast in the response is true there are more children than were returned."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "assets"
  ],
  "properties": {
    "assets": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "description": "The child's Discovery record id."
          },
          "title": {
            "type": "string",
            "description": "Child title as XML-style markup, for example <unittitle>...</unittitle>."
          },
          "isParent": {
            "type": "boolean",
            "description": "True if this child has children of its own."
          },
          "parentId": {
            "type": [
              "string",
              "null"
            ],
            "description": "Id of the parent record."
          },
          "scopeContent": {
            "type": "object",
            "description": "Scope and content as XML-style markup text in `description`.",
            "additionalProperties": true
          },
          "coveringDates": {
            "type": [
              "string",
              "null"
            ],
            "description": "Dates the child covers, as text."
          },
          "referencePart": {
            "type": [
              "string",
              "null"
            ],
            "description": "This child's part of the reference."
          },
          "catalogueLevel": {
            "type": "integer",
            "description": "Level in the catalogue hierarchy."
          }
        },
        "additionalProperties": true
      },
      "description": "The child records, in catalogue order. Empty when there are none."
    },
    "hasMoreAfterLast": {
      "type": "boolean",
      "description": "True when more children exist after the last one returned."
    },
    "hasMoreBeforeFirst": {
      "type": "boolean",
      "description": "True when more children exist before the first one returned."
    }
  },
  "description": "The child records of the requested record.",
  "additionalProperties": true
}