Start a pipeline run over HTTPS. No API key — the secret token is embedded in the URL. Keep the link private.
POST or GET — /api/webhooks/pipeline/{pipeline_id}/{token}
{{trigger_body}} is the raw POST body string (empty for GET).Send Content-Type: application/json. All fields are optional.
variables — override pipeline task variables for this run (keys you defined under Variables).initial_step_outputs — optional array of strings to seed outputs before step 1 (advanced).variables cannot override trigger_body; it is always set from the raw POST body.JSON object describing the finished run. ok is false when a step failed or the run was cancelled.
| Code | Meaning |
|---|---|
200 | Run finished (check ok and status in the body). |
403 | Invalid or revoked trigger token. |
404 | Pipeline not found. |
409 | Pipeline is disabled. |
If you set a Webhook URL under Settings, the server POSTs a separate JSON payload when the run completes. Optional header X-Pipeline-Signature: sha256=… when a webhook secret is configured.
Pick a task you saved from the Web Agent Playground. It will be added as an Agent step and any task variables will be merged into the pipeline variables.
Select a pipeline to edit, or create a new one. Chain AI agent steps, HTTP requests, and more — passing outputs between steps with {{prev_output}}. When the prior step returns JSON, use dotted paths (e.g. {{user.id}}) like pipeline variables.
WebArm24 is an AI-powered automation platform that lets developers and teams build multi-step agent pipelines, MCP tool workflows, browser automations, HTTP integrations, cron schedules, and webhook-triggered automations — all from a visual builder with natural-language AI assistance.
Unlike traditional automation tools, WebArm24 is built agent-first. Every pipeline step can be a real AI agent task (GPT-4o or Claude) with live browser control via Playwright, MCP tool calls, JavaScript transformations, or HTTP requests. Use "Build with AI" to describe any automation workflow in plain language and get a runnable multi-step pipeline instantly.
WebArm24 serves as a hosted agent backend and agents platform. Enqueue one-shot agent runs via REST API (/api/agent/jobs), stream real-time agent sessions over WebSocket, trigger pipelines via inbound webhooks, and manage automation schedules — all without infrastructure overhead. Suitable as an agent orchestration backend, AI pipeline backend, or agentic workflow engine.
n8n is a popular open-source workflow automation tool. WebArm24 differs by providing native AI agent steps, real browser automation via Playwright, MCP tool support, and a "Build with AI" natural-language workflow generator — making it the better choice for AI automation, agentic workflows, and LLM-driven pipeline orchestration.
Zapier connects apps via triggers and actions. WebArm24 adds full AI agent capabilities: real browser interaction, LLM reasoning steps, MCP tool calls, and natural-language pipeline building. For teams building AI automation, agent automation, or agentic workflows, WebArm24 is the more powerful platform.
Make offers visual workflow building with many app connectors. WebArm24 focuses on AI-first automation: every step can involve an AI agent, browser control, or MCP tool. It is purpose-built for automation platforms that need real AI reasoning, not just data routing.