Dispatch

The workflow JSON

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{
  "id": "aicp-dispatch",
  "name": "dispatch",
  "meta": {
    "description": "Work-dispatch lane (ADR 0012). Every 10 minutes it asks the `lanes` service to claim ONE ready ticket (GET lanes:8081/dispatch?assignee=\u2026), then hands the resulting payload to the ROUTER. It never calls a runner: the router is the only path to one, and a second path is the open C2 threat-model finding. SINGLE WRITER \u2014 do not run a second copy of this lane against the same ticket store; that is what makes the claim safe without a lease (ADR 0010 N2). An empty queue is the normal state and ends the run quietly; a BLOCKED ticket (no acceptance criterion, or hop ceiling reached) notifies a human, because those need judgement rather than another agent. BACKEND: defaults to `file` because the lanes container has no `gh` binary and no GitHub credential \u2014 reaching GitHub Issues from here needs either gh in the image or a token plus an API transport, and putting a credential in this service is an exposure decision rather than a code change. Set TICKET_BACKEND=github once that is decided; the seam is why it is a one-word change. IF nodes use a boolean EXPRESSION rather than a typed operator: 'number'+'exists' fails strict validation on null, and null is this payload's normal 'nothing to dispatch' value \u2014 so the lane errored on its own healthy state."
  },
  "nodes": [
    {
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "minutes",
              "minutesInterval": 10
            }
          ]
        }
      },
      "id": "d1",
      "name": "Every 10 minutes",
      "type": "n8n-nodes-base.scheduleTrigger",
      "typeVersion": 1.2,
      "position": [
        -160,
        0
      ]
    },
    {
      "parameters": {},
      "id": "d0",
      "name": "Run on demand",
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "typeVersion": 1,
      "position": [
        -160,
        200
      ]
    },
    {
      "parameters": {
        "url": "=http://lanes:8081/dispatch?backend={{ $env.TICKET_BACKEND || 'file' }}&assignee={{ $env.DISPATCH_ASSIGNEE || 'dex-the-dispatcher' }}",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "x-lanes-token",
              "value": "={{ $env.LANES_TOKEN }}"
            }
          ]
        },
        "options": {}
      },
      "id": "d2",
      "name": "Claim one ticket",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        60,
        100
      ]
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "version": 2
          },
          "conditions": [
            {
              "id": "c-dispatched",
              "operator": {
                "type": "boolean",
                "operation": "true",
                "singleValue": true
              },
              "leftValue": "={{ $json.dispatched !== null && $json.dispatched !== undefined }}",
              "rightValue": ""
            }
          ],
          "combinator": "and"
        },
        "options": {
          "looseTypeValidation": true
        }
      },
      "id": "d3",
      "name": "Was anything claimed?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "position": [
        280,
        100
      ]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "http://router:8080/route",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "authorization",
              "value": "=Bearer {{ $env.ROUTER_TOKEN }}"
            }
          ]
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ JSON.stringify($json.payload) }}",
        "options": {}
      },
      "id": "d4",
      "name": "Hand off to the router",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        520,
        0
      ]
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "version": 2
          },
          "conditions": [
            {
              "id": "c-blocked",
              "operator": {
                "type": "boolean",
                "operation": "true",
                "singleValue": true
              },
              "leftValue": "={{ $json.blocked !== null && $json.blocked !== undefined }}",
              "rightValue": ""
            }
          ],
          "combinator": "and"
        },
        "options": {
          "looseTypeValidation": true
        }
      },
      "id": "d5",
      "name": "Blocked, or just empty?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "position": [
        520,
        220
      ]
    },
    {
      "parameters": {
        "jsCode": "// A BLOCKED ticket needs a person, not a retry. Both blocking cases \u2014\n// no acceptance criterion, and the hop ceiling \u2014 are judgement calls\n// that another agent cannot resolve, and retrying would spin forever.\nconst j = $input.first().json;\nreturn [{ json: {\n  severity: 'warn',\n  title: `Dispatch blocked on ticket #${j.blocked}`,\n  message: j.note,\n  source: 'dispatch',\n} }];"
      },
      "id": "d6",
      "name": "Format blocked notice",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        740,
        220
      ]
    },
    {
      "parameters": {
        "source": "database",
        "workflowId": {
          "__rl": true,
          "value": "aicp-notify",
          "mode": "id"
        },
        "options": {
          "waitForSubWorkflow": true
        },
        "workflowInputs": {
          "mappingMode": "autoMapInputData",
          "value": {},
          "matchingColumns": [],
          "schema": []
        }
      },
      "id": "d7",
      "name": "Notify",
      "type": "n8n-nodes-base.executeWorkflow",
      "typeVersion": 1.2,
      "position": [
        960,
        220
      ]
    }
  ],
  "connections": {
    "Every 10 minutes": {
      "main": [
        [
          {
            "node": "Claim one ticket",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Run on demand": {
      "main": [
        [
          {
            "node": "Claim one ticket",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Claim one ticket": {
      "main": [
        [
          {
            "node": "Was anything claimed?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Was anything claimed?": {
      "main": [
        [
          {
            "node": "Hand off to the router",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Blocked, or just empty?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Blocked, or just empty?": {
      "main": [
        [
          {
            "node": "Format blocked notice",
            "type": "main",
            "index": 0
          }
        ],
        []
      ]
    },
    "Format blocked notice": {
      "main": [
        [
          {
            "node": "Notify",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "errorWorkflow": "aicp-error-trigger"
  },
  "active": false
}

About this workflow

dispatch. Uses executeWorkflowTrigger, httpRequest. Scheduled trigger; 8 nodes.

Source: https://github.com/jgobuilds/ai-control-plane-public/blob/main/n8n-workflows/dispatch.workflow.json — original creator credit. Request a take-down →

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