Evaluate decision table API

Fires the first row of a condition->action decision table whose conditions all match the facts; conditions support eq/ne/gt/gte/lt/lte/in/nin/between/regex/exists and wildcard. Answers 'Which rule applies to these facts?', 'What action should fire?'.

Price$0.02per request

MethodPOST

Route/v1/workflow/decision-table

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

decision-tablerulesconditionsactiondmnlookupworkflowrouting

API URLhttps://x402.hexl.dev/v1/workflow/decision-table

Integration docs

Example request

{
  "rules": [
    {
      "when": {
        "tier": "gold",
        "spend": {
          "op": "gte",
          "value": 100
        }
      },
      "then": {
        "discount": 0.2
      }
    },
    {
      "when": {
        "tier": "*"
      },
      "then": {
        "discount": 0.05
      }
    }
  ],
  "facts": {
    "tier": "gold",
    "spend": 150
  }
}

Example response

{
  "matched": true,
  "firedRowIndex": 0,
  "matchedRowIndices": [
    0
  ],
  "action": {
    "discount": 0.2
  },
  "interpretation": "Row 0 fired."
}

Input schema

{
  "type": "object",
  "required": [
    "rules",
    "facts"
  ],
  "properties": {
    "rules": {
      "type": "array",
      "description": "Ordered rows with when/then",
      "examples": [
        [
          {
            "when": {
              "tier": "gold",
              "spend": {
                "op": "gte",
                "value": 100
              }
            },
            "then": {
              "discount": 0.2
            }
          },
          {
            "when": {
              "tier": "*"
            },
            "then": {
              "discount": 0.05
            }
          }
        ]
      ]
    },
    "facts": {
      "type": "object",
      "examples": [
        {
          "tier": "gold",
          "spend": 150
        }
      ]
    },
    "firstMatch": {
      "type": "boolean"
    },
    "default": {
      "type": "object"
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}