Campaign Flow Builder

Purpose

Guides users from business intent ("I want a welcome email series") to a complete, validated flow with entry segments, delays, conditional branches, A/B tests, and export steps. Follows the advisor pattern: understand the goal, suggest structure, iterate, then create.

Flows are the most complex Lytics object -- this skill makes them approachable.

Environment

Requires authenticated API access. See ../references/auth.md for credential resolution.

Flow API Format

Flows use a node-edge graph representation (TranslatedFlow format):

• Nodes: Steps in the journey (trigger, delay, export, conditional, A/B test, exit)
• Edges: Connections between steps (with optional conditions or probabilities)

Building a Flow

Step 1: Understand the Campaign Goal

Classify the user's intent:

• "Welcome email series" -> trigger on segment entry, delays between emails
• "Re-engagement campaign" -> trigger on lapsed users, conditional check, export
• "A/B test two offers" -> trigger, A/B split, two export paths
• "Multi-channel nurture" -> trigger, delays, conditionals, multiple export channels

Ask:

• What triggers entry? (entering a segment, being in a segment)
• How many steps/touchpoints?
• Any branching logic? (VIP vs standard, engaged vs not)
• What timing between steps?
• Can users re-enter?

Step 2: Verify Entry Segment

The flow needs a trigger segment. Check if it exists:

curl -s "${LYTICS_API_URL:-https://api.lytics.io}/v2/segment?table=user&sizes=true" \
  -H "Authorization: ${LYTICS_API_TOKEN}"

If no suitable segment exists, suggest using audience-builder skill or audience-advisor skill to create one.

Step 3: Design the Flow Structure

Present a visual text diagram of the proposed flow:

TRIGGER: On entry to "New Signups" segment
  |
  v
[Send Welcome Email] (export)
  |
  v
[Wait 3 days] (delay)
  |
  v
[Opened Welcome?] (conditional split)
  |           |
  YES         NO
  |           |
  v           v
[Send Offer] [Send Reminder]
  |           |
  v           v
[EXIT]       [EXIT]

Iterate with the user until they're happy with the structure.

Step 4: Build the Flow Payload

Node Types

Trigger (always sequence_id: 0):

{
  "sequence_id": 0,
  "type": "trigger",
  "entry_segment_id": "segment-uuid-here",
  "entry_condition": "on_segment_entry",
  "reentry_allowed": false,
  "reentry_delay": 86400
}

Entry conditions:

• "on_segment_entry" -- fires when user enters the segment (event-based, most common)
• "in_segment" -- fires for users currently in the segment (snapshot)

Reentry delay is in seconds. Minimum is 3600 (1 hour).

Export (send to external platform):

{
  "sequence_id": 1000,
  "type": "export",
  "label": "Send Welcome Email",
  "work_config": {}
}

The work_config is configured separately after flow creation via the work endpoint.

Delay (wait between steps):

{
  "sequence_id": 2000,
  "type": "delay",
  "label": "Wait 3 days",
  "delay": 259200000000000
}

Delay is in nanoseconds. Common values:

• 1 hour: 3600000000000
• 24 hours: 86400000000000
• 3 days: 259200000000000
• 7 days: 604800000000000

Optional: delay_condition (FilterQL) -- proceed only when condition is met. Optional: delay_until_enters (array of segment IDs) -- wait until user enters all listed segments.

Conditional Split (if/else branching):

{
  "sequence_id": 3000,
  "type": "conditional_split",
  "label": "Opened Welcome?"
}

Conditions are defined on the edges, not the node. See Edges section.

A/B Test (random split):

{
  "sequence_id": 4000,
  "type": "ab_test",
  "label": "50/50 Test"
}

Probabilities are defined on the edges. Must sum to 1.0.

Exit (end of flow):

{
  "sequence_id": 9999,
  "type": "exit"
}

Edge Types

Simple connection:

{"id": "0-1000", "source": 0, "target": 1000, "type": "connected"}

Conditional split edge (with FilterQL):

{
  "id": "3000-4000",
  "source": 3000,
  "target": 4000,
  "type": "connected",
  "condition": {
    "definition": "FILTER AND (email_opened = true) FROM user",
    "label": "Yes",
    "priority": 2
  }
}

Higher priority numbers are checked first. The default/fallback edge should have "definition": "" and "priority": 1.

A/B test edge (with probability):

{
  "id": "4000-5000",
  "source": 4000,
  "target": 5000,
  "type": "connected",
  "probability": 0.5
}

All probabilities from the same source node must sum to 1.0.

Step ID Assignment

• Trigger is always sequence_id: 0
• All other IDs are caller-assigned positive integers (must be unique within the flow)
• Convention: use multiples of 1000 (1000, 2000, 3000) for readability

Step 5: Confirm and Create

Use the confirmation-gate pattern. Show:

• Flow diagram (text visual)
• Entry segment name and size
• Step count and types
• Timing summary
• Raw API payload

curl -s -X POST "${LYTICS_API_URL:-https://api.lytics.io}/v2/flow/ui" \
  -H "Authorization: ${LYTICS_API_TOKEN}" \
  -H "Content-Type: application/json" \
  -d '{ ... flow payload ... }'

Step 6: Configure Export Steps

After the flow is created in draft state, configure the work/export for each export step:

curl -s -X POST "${LYTICS_API_URL:-https://api.lytics.io}/v2/flow/ui/${FLOW_ID}/step/${STEP_ID}/work" \
  -H "Authorization: ${LYTICS_API_TOKEN}" \
  -H "Content-Type: application/json" \
  -d '{ ... work configuration ... }'

Then publish the work:

curl -s -X POST "${LYTICS_API_URL:-https://api.lytics.io}/v2/flow/ui/${FLOW_ID}/step/${STEP_ID}/work/publish" \
  -H "Authorization: ${LYTICS_API_TOKEN}"

Step 7: Activate the Flow

Once all export steps have published work, activate the flow:

curl -s -X POST "${LYTICS_API_URL:-https://api.lytics.io}/v2/flow/ui/${FLOW_ID}" \
  -H "Authorization: ${LYTICS_API_TOKEN}" \
  -H "Content-Type: application/json" \
  -d '{"state": "running"}'

Important: Only one version of a flow can be running at a time. Publishing a new version automatically sets the old one to draining.

Common Campaign Patterns

Welcome Series

TRIGGER (on_segment_entry: "New Signups")
  -> [Send Welcome] -> [Wait 3d] -> [Send Tips] -> [Wait 7d] -> [Send Offer] -> EXIT

Re-engagement

TRIGGER (in_segment: "Lapsed 30d")
  -> [Send Win-Back] -> [Wait 7d]
  -> CONDITIONAL (opened email?)
     YES -> [Send Discount] -> EXIT
     NO  -> [Send Final Notice] -> EXIT

A/B Test

TRIGGER (on_segment_entry: "Trial Users")
  -> [Wait 1d]
  -> A/B TEST (50/50)
     A -> [Send Offer A] -> EXIT
     B -> [Send Offer B] -> EXIT

Multi-Channel Nurture

TRIGGER (on_segment_entry: "High Intent")
  -> [Send Email] -> [Wait 2d]
  -> CONDITIONAL (converted?)
     YES -> EXIT
     NO  -> [Push Notification] -> [Wait 3d]
           -> [Retarget on Facebook] -> EXIT

Flow States

State	Description	Can Edit?
draft	Not active, fully editable	Yes -- add/remove/modify steps
running	Active, processing users	Limited -- can update work_config, labels, conditions; cannot add/remove steps
draining	Winding down, no new entries	Same as running
deleted	Permanently deleted	No

Error Handling

• Invalid FilterQL in conditions: Validate conditions before creating the flow
• Probabilities don't sum to 1.0: Adjust and retry
• Entry segment not found: Help create one with audience-builder
• Duplicate step IDs: Regenerate with unique values
• Missing work config: Guide through export step configuration

Dependencies

• Composes: segment-manager skill, audience-builder skill, job-manager skill
• References: ../references/filterql-grammar.md, ../references/confirmation-gate.md, ../references/auth.md, ../references/api-client.md