delete-context

Delete nodes from the project's context graph, with their relationships. Irreversible. Needs the fabric:ontology.write grant.

curl -sS -X POST https://fabric.wexa.ai/mcp/$FABRIC_PROJECT_ID \
  -H "authorization: Bearer $FABRIC_API_KEY" \
  -H "Mcp-Session-Id: $MCP_SESSION_ID" \
  -H "content-type: application/json" -H "accept: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"delete-context","arguments":{"label":"FixtureCustomer","key":"id","value":"c-1001"}}}'

{
  "content": [
    {
      "type": "text",
      "text": "{\"lifecycle_id\":\"qlc_000213\",\"result\":{\"deleted\":1,\"element_ids\":[\"360525967589900288\"],\"label\":\"FixtureCustomer\",\"relationships\":\"detached with the node(s)\"}}"
    }
  ],
  "isError": false
}

curl -sS https://fabric.wexa.ai/v1/delete-context \
  -H "authorization: Bearer $FABRIC_API_KEY" \
  -H "content-type: application/json" \
  -d '{"label":"FixtureCustomer","key":"id","value":"c-1001"}'

{
  "lifecycle_id": "qlc_000213",
  "result": {
    "deleted": 1,
    "element_ids": [
      "360525967589900288"
    ],
    "label": "FixtureCustomer",
    "relationships": "detached with the node(s)"
  }
}

import { Fabric } from '@wexa-fabric/sdk'

const fabric = new Fabric()
const result = await fabric.deleteContext({
  label: 'FixtureCustomer',
  key: 'id',
  value: 'c-1001'
})

// result is the payload itself, with no `.result` to read
{
  deleted: 1,
  element_ids: [ '360525967589900288' ],
  label: 'FixtureCustomer',
  relationships: 'detached with the node(s)'
}

from wexa import Fabric

fabric = Fabric()
out = fabric.delete_context(
    label="FixtureCustomer",
    key="id",
    value="c-1001",
)

# out is the result, already unwrapped
{
    "deleted": 1,
    "element_ids": ["360525967589900288"],
    "label": "FixtureCustomer",
    "relationships": "detached with the node(s)"
}

Parameters

Parameter	Type	Required	Notes
`label`	string	Required	The nodes' label, for example `Customer`. Platform-managed labels cannot be deleted.
`key`	string	Optional	The merge-key property name, for example `id`. Needed with `value` or `values`. A plain identifier.
`value`	any	Optional	One merge-key value. Not null. Give exactly one of `value`, `values`, `where` or `all`.
`values`	array	Optional	A list of merge-key values, up to 10,000. Not empty; more than 10,000 is refused (413) and nothing is deleted, so split the delete.
`where`	object	Optional	Property-equality filter, for example `{"batch": "load-7"}`. A non-empty object.
`all`	boolean	Optional	`true` deletes every node of the label that `save-context` wrote.
`dry_run`	boolean	Optional	`true` returns `would_delete` and deletes nothing. Never held for approval.
`expected_count`	integer	Optional	Refuse the delete (409) unless exactly this many nodes match. Nothing is deleted on a mismatch.

Errors

NotFound (404): nothing you wrote matches. Answered before any approval is requested.
ValidationError (422): not exactly one of value, values, where or all was given.

Show full response

A real response, captured from a live call to delete-context:

{
  "content": [
    {
      "type": "text",
      "text": "{\"lifecycle_id\":\"qlc_000213\",\"result\":{\"deleted\":1,\"element_ids\":[\"360525967589900288\"],\"label\":\"FixtureCustomer\",\"relationships\":\"detached with the node(s)\"}}"
    }
  ],
  "isError": false
}

{
  "lifecycle_id": "qlc_000213",
  "result": {
    "deleted": 1,
    "element_ids": [
      "360525967589900288"
    ],
    "label": "FixtureCustomer",
    "relationships": "detached with the node(s)"
  }
}

// the object you get back IS the result — there is no `.result` to read
{
  deleted: 1,
  element_ids: [ '360525967589900288' ],
  label: 'FixtureCustomer',
  relationships: 'detached with the node(s)'
}

// The TS SDK names these camelCase — lifecycleId, traceId — where Python uses
// lifecycle_id and trace_id. Both are non-enumerable: readable, but omitted by
// Object.keys() and JSON.stringify(). `result.lifecycleId` here is undefined.
result.lifecycleId // 'qlc_000213'

# a dict subclass; `result` is already unwrapped
{
 "deleted": 1,
 "element_ids": [
  "360525967589900288"
 ],
 "label": "FixtureCustomer",
 "relationships": "detached with the node(s)"
}

out.lifecycle_id  # 'qlc_000213' — an attribute, not a key

More details

Full description from the tool, as the gateway advertises it:

Delete nodes from this project's context graph, together with their relationships. Address them as you wrote them with save-context: a label plus exactly one of value, values, where or all. Up to 10,000 nodes per call, under one approval when the call is held; dry_run: true returns the count without deleting and is never held. Deleting is permanent and there is no undo, so this reports how many nodes matched — if it matched nothing you get an error, not a cheerful success. Platform-managed labels cannot be deleted through this tool. query-context refuses DELETE/DETACH on purpose; this is the only delete path.

Marked consequential: it is audited in full, and a policy rule or the write gate may hold it for a person to approve. One approval covers every node the call matched. See Policy and approvals.

Every tool call works the same way: How every tool call works.