Automate WhatsApp

When to use

Use this skill to build and run WhatsApp automations: workflow CRUD, graph edits, triggers, executions, function management, webhook tools, and MCP tools.

Setup

Preferred path:

• Kapso CLI installed and authenticated (kapso login)
• For workflow and function edits, use source-controlled projects with kapso link, kapso pull, kapso build, and kapso push
• For workflow code, use @kapso/workflows and export a Workflow instance from workflow.js or workflow.ts

Fallback path: Env vars:

• KAPSO_API_BASE_URL (host only, no /platform/v1)
• KAPSO_API_KEY

How to

Edit workflows locally

Use this path first when the user is working in, or can create, a local repo.

npm install -g @kapso/cli
npm install --save-dev @kapso/workflows
kapso login
kapso link --project <project-id>
kapso pull

Edit workflows/<workflow-slug>/workflow.js or workflow.ts with @kapso/workflows:

import { START, Workflow } from "@kapso/workflows";

const workflow = new Workflow("inbound-support", {
  name: "Inbound Support",
  status: "draft",
});

workflow.addTrigger({
  type: "inbound_message",
  phoneNumberId: "<phone-number-id>",
});

workflow.addNode(START, {
  position: { x: 100, y: 100 },
});

workflow.addNode("reply", {
  type: "send_text",
  message: "Thanks for reaching out.",
});

workflow.addEdge(START, "reply");

export default workflow;

Build and push:

kapso build
kapso push --dry-run
kapso push workflow <workflow-slug>

Use kapso push to push every local function and workflow. See references/local-workflow-source.md for repo layout, source-file behavior, and JSON-only editing.

Discover phone numbers first

Preferred path:

1. Check project state: kapso status
2. List connected numbers: kapso whatsapp numbers list --output json
3. Resolve a display number when needed: kapso whatsapp numbers resolve --phone-number "<display-number>" --output json

Fallback path:

1. List number configs for triggers: node scripts/list-whatsapp-phone-numbers.js

Edit a workflow graph through API scripts

Prefer local source sync for workflow edits. Use these scripts as a fallback for debugging, direct graph inspection, or API-only environments.

1. Fetch graph: node scripts/get-graph.js <workflow_id> (note the lock_version)
2. Edit the JSON (see graph rules below)
3. Validate: node scripts/validate-graph.js --definition-file <path>
4. Update: node scripts/update-graph.js <workflow_id> --expected-lock-version <n> --definition-file <path>
5. Re-fetch to confirm

For small edits, use edit-graph.js with --old-file and --new-file instead.

If you get a lock_version conflict: re-fetch, re-apply changes, retry with new lock_version.

Manage triggers

1. List: node scripts/list-triggers.js <workflow_id>
2. Create: node scripts/create-trigger.js <workflow_id> --trigger-type <type> --phone-number-id <id>
3. Toggle: node scripts/update-trigger.js --trigger-id <id> --active true|false
4. Delete: node scripts/delete-trigger.js --trigger-id <id>

For inbound_message triggers, prefer kapso whatsapp numbers resolve --phone-number "<display-number>" --output json to get the exact phone_number_id. Fall back to node scripts/list-whatsapp-phone-numbers.js when the CLI is unavailable.

Debug executions

1. List: node scripts/list-executions.js <workflow_id>
2. Inspect: node scripts/get-execution.js <execution-id>
3. Get value: node scripts/get-context-value.js <execution-id> --variable-path vars.foo
4. Events: node scripts/list-execution-events.js <execution-id>

Create and deploy a function

1. Write code with handler signature (see function rules below)
2. Create: node scripts/create-function.js --name <name> --code-file <path> [--public-endpoint true]
3. Deploy: node scripts/deploy-function.js --function-id <id>
4. Verify: node scripts/get-function.js --function-id <id>

Use --public-endpoint true when the function should be callable without X-API-Key via the Kapso-hosted invoke URL. This is only supported for Cloudflare functions. New functions default to invoke_response_mode=passthrough, which returns the function body directly on successful invoke. Legacy wrapped functions can be migrated later with update-function.js.

Set up agent node with remote sandbox repositories

Use this when the agent needs a remote ephemeral workspace to inspect or modify repository files during a workflow run.

1. Read references/agent-remote-sandbox.md for the execution model and field rules
2. Find model: node scripts/list-provider-models.js
3. Copy assets/agent-remote-sandbox-github-repo-example.json as a starting point, or edit the agent node under data.config
4. Set sandbox_enabled: true
5. Set sandbox_network_mode to allow_all or allow_list
6. If using allow_list, add extra outbound hosts in sandbox_allowed_outbound_hosts
7. Add GitHub repositories to flow_agent_resources with:

• resource_type: "github_repository"
• repo_url
• branch
• pat

1. Write the system prompt so it explicitly reads from /workspace/repos/<repo-slug> before making changes
2. Validate and update the graph

Notes:

• Remote sandbox is beta and free during the beta
• sandbox_enabled controls whether the remote workspace and sandbox tools are available
• Repository resources stay configured even if sandbox access is turned off later
• v1 supports GitHub repositories only
• Use a repository root URL, not a GitHub file URL or tree/... URL
• Repositories are mounted into /workspace/repos/<repo-slug> inside the remote sandbox
• Use references/agent-remote-sandbox.md and references/node-types.md for the exact shape

Graph rules

• Exactly one start node with id = start
• Never change existing node IDs
• Use {node_type}_{timestamp_ms} for new node IDs
• Non-decide nodes have 0 or 1 outgoing next edge
• Decide edge labels must match conditions[].label
• Edge keys are source/target/label (not from/to)

For full schema details, see references/graph-contract.md.

Function rules

async function handler(request, env) {
  // Parse input
  const body = await request.json();
  // Use env.KV and secrets as needed
  return new Response(JSON.stringify({ result: "ok" }));
}

• Do NOT use export, export default, or arrow functions
• Return a Response object

Execution context

Always use this structure:

• vars - user-defined variables
• system - system variables
• context - channel data
• metadata - request metadata

Scripts

Workflows

Graph

Triggers

Executions

Functions

OpenAPI

Install deps (once):

npm i

Examples:

node scripts/openapi-explore.mjs --spec workflows search "variables"
node scripts/openapi-explore.mjs --spec workflows op getWorkflowVariables

Notes

• Prefer file paths over inline JSON (--definition-file, --code-file)
• Variable CRUD (variables-set.js, variables-delete.js) is blocked - Platform API doesn't support it

References

Read before editing:

• references/local-workflow-source.md - CLI source sync, repo layout, and @kapso/workflows
• references/graph-contract.md - Graph schema, computed vs editable fields, lock_version
• references/node-types.md - Node types and config shapes
• references/workflow-overview.md - Execution flow and states

Other references:

• references/execution-context.md - Context structure and variable substitution
• references/triggers.md - Trigger types and setup
• references/agent-remote-sandbox.md - Remote sandbox behavior, repo resources, mounted paths
• references/functions-reference.md - Function management
• references/functions-payloads.md - Payload shapes for functions

Assets

Related skills

• integrate-whatsapp - Onboarding, webhooks, messaging, templates, flows
• observe-whatsapp - Debugging, logs, health checks

<!-- FILEMAP:BEGIN -->

[automate-whatsapp file map]|root: .
|.:{package.json,SKILL.md}
|assets:{agent-remote-sandbox-github-repo-example.json,function-decide-route-interactive-buttons.json,functions-example.json,workflow-agent-simple.json,workflow-api-template-wait-agent.json,workflow-customer-support-intake-agent.json,workflow-decision.json,workflow-interactive-buttons-decide-ai.json,workflow-interactive-buttons-decide-function.json,workflow-linear.json}
|references:{agent-remote-sandbox.md,execution-context.md,function-contracts.md,functions-payloads.md,functions-reference.md,graph-contract.md,local-workflow-source.md,node-types.md,triggers.md,workflow-overview.md,workflow-reference.md}
|scripts:{create-function.js,create-trigger.js,create-workflow.js,delete-trigger.js,deploy-function.js,edit-graph.js,get-context-value.js,get-execution-event.js,get-execution.js,get-function.js,get-graph.js,get-workflow.js,invoke-function.js,list-execution-events.js,list-executions.js,list-function-invocations.js,list-functions.js,list-provider-models.js,list-triggers.js,list-whatsapp-phone-numbers.js,list-workflows.js,openapi-explore.mjs,resume-execution.js,update-execution-status.js,update-function.js,update-graph.js,update-trigger.js,update-workflow-settings.js,validate-graph.js,variables-delete.js,variables-list.js,variables-set.js}
|scripts/lib/functions:{args.js,kapso-api.js}
|scripts/lib/workflows:{args.js,kapso-api.js,result.js}

<!-- FILEMAP:END -->