Skip to main content
Glama
opsec12

n8n-mcp-mini

by opsec12

Trigger a workflow via its webhook

n8n_trigger_webhook

Trigger an n8n workflow by calling its webhook URL. Supply the path from the Production or Test URL, optionally with method, body, or test mode.

Instructions

n8n's public API has no 'run workflow now' endpoint — the real way to trigger a workflow over HTTP is calling its own Webhook/Form trigger URL directly. Provide the webhook's path (the part after /webhook/ or /webhook-test/ in the node's Production/Test URL).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
bodyNo
testNoUse the test webhook URL (/webhook-test/...) instead of production
methodNo
webhookPathYese.g. 'my-workflow-hook' from https://your-instance/webhook/my-workflow-hook
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description must disclose behavioral traits, but it only explains the URL mechanics. It does not mention that triggering a webhook executes the workflow, which may have side effects, require authentication, or be rate-limited. This is a significant gap for a trigger operation.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two sentences, front-loaded with the key purpose, and contains no fluff. Every sentence adds value, explaining both the 'why' and the 'how' efficiently.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description covers the core purpose and the webhook path format, but it does not clarify important prerequisites such as the workflow having a Webhook/Form trigger node or being active. It also omits any mention of the response format or error handling, which is more important given the lack of an output schema.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description adds valuable context for the required 'webhookPath' parameter by explaining how to extract it from a webhook URL. However, it does not elaborate on 'body' or 'method' parameters, leaving their semantics to the schema. This partially compensates for the 50% schema coverage.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states that the tool triggers a workflow via its webhook URL, using a specific verb and resource. It also distinguishes this tool from siblings by explaining the public API's limitation and positioning webhook triggering as the real way to run a workflow over HTTP.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides clear context for when to use this tool, noting that the public API lacks a 'run workflow now' endpoint and that this tool fills that gap. It does not explicitly list exclusion criteria or alternative tools, but the intended use is evident.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/opsec12/mcp_server'

If you have feedback or need assistance with the MCP directory API, please join our Discord server