postfa.st WebMCP Tools, Schemas & Agent Capabilities

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live Unverified (seed import) Productivity & Business 5 tools imperative implementation

Save 10+ hours weekly with PostFast. Schedule and automate your social media posts across Facebook, Instagram, Threads, X, LinkedIn, TikTok, YouTube, Telegram & more from one dashboard.

First seen 2026-10-05 · Last seen 2026-10-05 · Source: webmcp.com

Answer 5 · Act 0 · Transact 0 · Score: Not yet scored

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build_utm_link

answer imperative

Add UTM parameters to a URL for Google Analytics 4 campaign tracking and get back the tagged link and the GA4 channel its visits will count under. Follows the UTM builder at postfa.st/tools/utm-builder: values are lowercased and spaces become hyphens. For a social platform source such as linkedin or tiktok, or newsletter, medium can be left out.

Page: /

Input schema

Property	Type	Required	Description
`url`	string	yes	The page the link opens, starting with https:// or http://.
`source`	string	yes	Where the click comes from, e.g. linkedin, instagram, newsletter.
`medium`	string	no	Channel type, e.g. social, paid_social, email, cpc. Can be left out when source is a social platform or newsletter; the builder's preset fills it.
`campaign`	string	no	Campaign name, e.g. spring-launch.
`term`	string	no	Paid search keyword or test variant.
`content`	string	no	Tells links in one campaign apart, e.g. reel or bio-link.

Raw JSON schema

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "minLength": 1,
      "maxLength": 800,
      "description": "The page the link opens, starting with https:// or http://."
    },
    "source": {
      "type": "string",
      "minLength": 1,
      "maxLength": 100,
      "description": "Where the click comes from, e.g. linkedin, instagram, newsletter."
    },
    "medium": {
      "type": "string",
      "maxLength": 100,
      "description": "Channel type, e.g. social, paid_social, email, cpc. Can be left out when source is a social platform or newsletter; the builder's preset fills it."
    },
    "campaign": {
      "type": "string",
      "maxLength": 100,
      "description": "Campaign name, e.g. spring-launch."
    },
    "term": {
      "type": "string",
      "maxLength": 100,
      "description": "Paid search keyword or test variant."
    },
    "content": {
      "type": "string",
      "maxLength": 100,
      "description": "Tells links in one campaign apart, e.g. reel or bio-link."
    }
  },
  "required": [
    "url",
    "source"
  ],
  "additionalProperties": false
}