livevariant.com WebMCP Tools, Schemas & Agent Capabilities

livevariant.com

live Unverified (seed import) Productivity & Business 9 tools imperative implementation

Adaptive A/B testing where the entire test lives in a URL. Traffic shifts toward the winner while the test runs, several elements are optimized as one combination, and no raw visitor data is stored.…

First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com

Answer 3 · Act 5 · Transact 1 · Score: Not yet scored

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generate_priors

act imperative

Takes YOUR estimate of how each variant will perform and converts it into the prior the model starts from, so a test does not spend its first visitors rediscovering what you already suspect. You supply the guess; this does the arithmetic and the capping. That capping is the point: a prior is expressed as pseudo-observations, and it is deliberately held weak enough that real data overrides it quickly. The response says exactly how many real visitors per variant it takes to wash your guess out, so you can judge whether you have been too confident. Being wrong here costs a little early traffic, not the test. Priors are outside the identity hash, so the test keeps its id, its URLs and any history it already has. Pass `when` to make the belief hold for ONE segment only ("image B is the one for the blue segment"). Without it the belief is about every visitor, which is a different and much stronger claim.

Page: /

Input schema

Property	Type	Required	Description
`test`	string	no	The test: an encoded config, or any LiveVariant URL containing one (serve, click, pixel, manage), or a query-parameter serve URL. Paste whatever you have.
`config`	string	no	Alias for `test`: the same value under the name build_test returns it as (`config`). Pass one or the other.
`when`	object	no	Context this belief is limited to, as dimension key to value (e.g. {"color": "blauw"}). The keys must be dimensions the test declares. Omit it for a belief about every visitor.
`beliefs`	array	yes	—
`confidence`	—	no	How much your guess is worth in observations. low=5, medium=15, high=30, or give a number directly. Higher means the test trusts you for longer before the data takes over.

Raw JSON schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "test": {
      "type": "string",
      "minLength": 1,
      "description": "The test: an encoded config, or any LiveVariant URL containing one (serve, click, pixel, manage), or a query-parameter serve URL. Paste whatever you have."
    },
    "config": {
      "type": "string",
      "minLength": 1,
      "description": "Alias for `test`: the same value under the name build_test returns it as (`config`). Pass one or the other."
    },
    "when": {
      "description": "Context this belief is limited to, as dimension key to value (e.g. {\"color\": \"blauw\"}). The keys must be dimensions the test declares. Omit it for a belief about every visitor.",
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {
        "type": "string"
      }
    },
    "beliefs": {
      "minItems": 1,
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "slot": {
            "description": "Which slot the variant belongs to. Optional for single-slot tests.",
            "type": "string"
          },
          "variant": {
            "anyOf": [
              {
                "type": "string"
              },
              {
                "type": "integer",
                "minimum": -9007199254740991,
                "maximum": 9007199254740991
              }
            ],
            "description": "Variant name or index within its slot."
          },
          "rate": {
            "type": "number",
            "minimum": 0,
            "maximum": 1,
            "description": "Your estimate of its conversion rate, e.g. 0.04 for 4%."
          }
        },
        "required": [
          "variant",
          "rate"
        ]
      }
    },
    "confidence": {
      "default": "medium",
      "description": "How much your guess is worth in observations. low=5, medium=15, high=30, or give a number directly. Higher means the test trusts you for longer before the data takes over.",
      "anyOf": [
        {
          "type": "string",
          "enum": [
            "low",
            "medium",
            "high"
          ]
        },
        {
          "type": "number",
          "exclusiveMinimum": 0
        }
      ]
    }
  },
  "required": [
    "beliefs"
  ],
  "oneOf": [
    {
      "required": [
        "test"
      ]
    },
    {
      "required": [
        "config"
      ]
    }
  ]
}

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