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Validate Post

postly_validate_post
Read-onlyIdempotent

Checks proposed post text, media, platform settings, schedules, and targets against Postly and platform-specific requirements. Returns validation status, errors, warnings, platform readiness, and applicable limits.

Input Schema

NameRequiredDescriptionDefault
textNoPost text or caption to validate.
mediaNoOptional media objects that will be attached to the post.
workspace_idYesPostly workspace ID.
email_subjectNoRequired when validating a post for email/newsletter targets.
custom_repliesNoShared first comment or follow-up sequence for supported selected platforms. Text and links only. Platform custom replies replace shared replies. Omit on update to preserve; [] clears shared replies.
platform_postsNoOptional platform-specific overrides. Use postly_get_channel_schema for the selected platform before supplying settings.
one_off_scheduleNo
target_platformsNoOptional platform names, email/newsletter, provider names, or channel IDs. Use "all" or omit to validate against all connected workspace publishing targets. You may also pass a single string on clients that support that shorthand.
custom_reply_modesNoPer-platform reply selection: shared, custom, or off. Omit to preserve existing behavior. Custom settings replace rather than append. Property values may use multiple equivalent input shapes; the server normalizes them.
recurring_scheduleNo

Output Schema

NameRequiredDescriptionDefault
emailNo
validNo
errorsNo
limitsNo
warningsNo
platformsNo
schedulesNo
agent_guidanceNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed7 schema fields changed
    • addedInput schema / properties / media / items / properties / cover_image_url
      Added value: +{
      +  "description": "Alias for thumbnail; the canonical thumbnail field takes priority.",
      +  "type": "string"
      +}
    • addedInput schema / properties / media / items / properties / thumbnail
      Added value: +{
      +  "description": "Video cover image (thumbnail). Use only for destinations and post types that accept a custom cover. The server also accepts equivalent compatible shapes on some clients.",
      +  "properties": {
      +    "remote_url": {
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "remote_url"
      +  ],
      +  "type": "object"
      +}
    • addedInput schema / properties / media / items / properties / thumbnail_offset
      Added value: +{
      +  "description": "Video-frame position in milliseconds, where the destination supports it.",
      +  "minimum": 0,
      +  "type": "integer"
      +}
    • addedInput schema / properties / platform_posts / items / properties / media_override / items / properties / cover_image_url
      Added value: +{
      +  "description": "Alias for thumbnail; the canonical thumbnail field takes priority.",
      +  "type": "string"
      +}
    • addedInput schema / properties / platform_posts / items / properties / media_override / items / properties / thumbnail
      Added value: +{
      +  "description": "Video cover image (thumbnail). Use only for destinations and post types that accept a custom cover. The server also accepts equivalent compatible shapes on some clients.",
      +  "properties": {
      +    "remote_url": {
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "remote_url"
      +  ],
      +  "type": "object"
      +}
    • addedInput schema / properties / platform_posts / items / properties / media_override / items / properties / thumbnail_offset
      Added value: +{
      +  "description": "Video-frame position in milliseconds, where the destination supports it.",
      +  "minimum": 0,
      +  "type": "integer"
      +}
    • changedInput schema / properties / platform_posts / items / properties / settings / properties / custom_replies / description
      Previous value: -"Custom replies for facebook, instagram, linkedin, youtube, x, threads, bluesky. Minutes after parent publication. X/Threads/Bluesky allow media; other platforms text and links only. Do not also supply legacy reply fields."New value: +"Custom replies for facebook, instagram, linkedin, youtube, x, threads, bluesky, slack. Minutes after parent publication. X/Threads/Bluesky allow media; other platforms text and links only. Do not also supply legacy reply fields."
  2. Changed3 schema fields changed
    • changedInput schema / properties / platform_posts / items / properties / identifier / enum
      Previous value: -[
      -  "facebook",
      -  "fb",
      -  "fb_page",
      -  "fbpage",
      -  "facebook_page",
      -  "facebookpage",
      -  "meta_page",
      -  "metapage",
      -  "instagram",
      -  "insta",
      -  "ig",
      -  "linkedin",
      -  "linked_in",
      -  "linked",
      -  "lnkd",
      -  "linkdin",
      -  "linkedin_page",
      -  "linkedinpage",
      -  "x",
      -  "twitter",
      -  "x_twitter",
      -  "xtwitter",
      -  "googleMyBusiness",
      -  "google_my_business",
      -  "google_business",
      -  "googlebusiness",
      -  "google_business_profile",
      -  "googlebusinessprofile",
      -  "business_profile",
      -  "businessprofile",
      -  "google_maps",
      -  "googlemaps",
      -  "gmb",
      -  "gbp",
      -  "reddit",
      -  "pinterest",
      -  "pin",
      -  "youtube",
      -  "you_tube",
      -  "yt",
      -  "youtu",
      -  "yt_channel",
      -  "ytchannel",
      -  "youtube_channel",
      -  "youtubechannel",
      -  "youtube_shorts",
      -  "youtubeshorts",
      -  "tiktok",
      -  "tik_tok",
      -  "tik",
      -  "tok",
      -  "wordpress",
      -  "word_press",
      -  "wp",
      -  "ghost",
      -  "hashnode",
      -  "hash_node",
      -  "devto",
      -  "dev_to",
      -  "dev.to",
      -  "forem",
      -  "blogger",
      -  "blogspot",
      -  "threads",
      -  "thread",
      -  "bluesky",
      -  "blue_sky",
      -  "bsky",
      -  "telegram",
      -  "tg",
      -  "tme",
      -  "whatsapp",
      -  "whats_app",
      -  "whats",
      -  "wa"
      -]New value: +[
      +  "facebook",
      +  "fb",
      +  "fb_page",
      +  "fbpage",
      +  "facebook_page",
      +  "facebookpage",
      +  "meta_page",
      +  "metapage",
      +  "instagram",
      +  "insta",
      +  "ig",
      +  "linkedin",
      +  "linked_in",
      +  "linked",
      +  "lnkd",
      +  "linkdin",
      +  "linkedin_page",
      +  "linkedinpage",
      +  "x",
      +  "twitter",
      +  "x_twitter",
      +  "xtwitter",
      +  "googleMyBusiness",
      +  "google_my_business",
      +  "google_business",
      +  "googlebusiness",
      +  "google_business_profile",
      +  "googlebusinessprofile",
      +  "business_profile",
      +  "businessprofile",
      +  "google_maps",
      +  "googlemaps",
      +  "gmb",
      +  "gbp",
      +  "pinterest",
      +  "pin",
      +  "youtube",
      +  "you_tube",
      +  "yt",
      +  "youtu",
      +  "yt_channel",
      +  "ytchannel",
      +  "youtube_channel",
      +  "youtubechannel",
      +  "youtube_shorts",
      +  "youtubeshorts",
      +  "tiktok",
      +  "tik_tok",
      +  "tik",
      +  "tok",
      +  "wordpress",
      +  "word_press",
      +  "wp",
      +  "ghost",
      +  "hashnode",
      +  "hash_node",
      +  "devto",
      +  "dev_to",
      +  "dev.to",
      +  "forem",
      +  "blogger",
      +  "blogspot",
      +  "threads",
      +  "thread",
      +  "bluesky",
      +  "blue_sky",
      +  "bsky",
      +  "telegram",
      +  "tg",
      +  "tme",
      +  "whatsapp",
      +  "whats_app",
      +  "whats",
      +  "wa"
      +]
    • changedInput schema / properties / platform_posts / items / properties / settings / properties / identifier / enum
      Previous value: -[
      -  "facebook",
      -  "fb",
      -  "fb_page",
      -  "fbpage",
      -  "facebook_page",
      -  "facebookpage",
      -  "meta_page",
      -  "metapage",
      -  "instagram",
      -  "insta",
      -  "ig",
      -  "linkedin",
      -  "linked_in",
      -  "linked",
      -  "lnkd",
      -  "linkdin",
      -  "linkedin_page",
      -  "linkedinpage",
      -  "x",
      -  "twitter",
      -  "x_twitter",
      -  "xtwitter",
      -  "googleMyBusiness",
      -  "google_my_business",
      -  "google_business",
      -  "googlebusiness",
      -  "google_business_profile",
      -  "googlebusinessprofile",
      -  "business_profile",
      -  "businessprofile",
      -  "google_maps",
      -  "googlemaps",
      -  "gmb",
      -  "gbp",
      -  "reddit",
      -  "pinterest",
      -  "pin",
      -  "youtube",
      -  "you_tube",
      -  "yt",
      -  "youtu",
      -  "yt_channel",
      -  "ytchannel",
      -  "youtube_channel",
      -  "youtubechannel",
      -  "youtube_shorts",
      -  "youtubeshorts",
      -  "tiktok",
      -  "tik_tok",
      -  "tik",
      -  "tok",
      -  "wordpress",
      -  "word_press",
      -  "wp",
      -  "ghost",
      -  "hashnode",
      -  "hash_node",
      -  "devto",
      -  "dev_to",
      -  "dev.to",
      -  "forem",
      -  "blogger",
      -  "blogspot",
      -  "threads",
      -  "thread",
      -  "bluesky",
      -  "blue_sky",
      -  "bsky",
      -  "telegram",
      -  "tg",
      -  "tme",
      -  "whatsapp",
      -  "whats_app",
      -  "whats",
      -  "wa"
      -]New value: +[
      +  "facebook",
      +  "fb",
      +  "fb_page",
      +  "fbpage",
      +  "facebook_page",
      +  "facebookpage",
      +  "meta_page",
      +  "metapage",
      +  "instagram",
      +  "insta",
      +  "ig",
      +  "linkedin",
      +  "linked_in",
      +  "linked",
      +  "lnkd",
      +  "linkdin",
      +  "linkedin_page",
      +  "linkedinpage",
      +  "x",
      +  "twitter",
      +  "x_twitter",
      +  "xtwitter",
      +  "googleMyBusiness",
      +  "google_my_business",
      +  "google_business",
      +  "googlebusiness",
      +  "google_business_profile",
      +  "googlebusinessprofile",
      +  "business_profile",
      +  "businessprofile",
      +  "google_maps",
      +  "googlemaps",
      +  "gmb",
      +  "gbp",
      +  "pinterest",
      +  "pin",
      +  "youtube",
      +  "you_tube",
      +  "yt",
      +  "youtu",
      +  "yt_channel",
      +  "ytchannel",
      +  "youtube_channel",
      +  "youtubechannel",
      +  "youtube_shorts",
      +  "youtubeshorts",
      +  "tiktok",
      +  "tik_tok",
      +  "tik",
      +  "tok",
      +  "wordpress",
      +  "word_press",
      +  "wp",
      +  "ghost",
      +  "hashnode",
      +  "hash_node",
      +  "devto",
      +  "dev_to",
      +  "dev.to",
      +  "forem",
      +  "blogger",
      +  "blogspot",
      +  "threads",
      +  "thread",
      +  "bluesky",
      +  "blue_sky",
      +  "bsky",
      +  "telegram",
      +  "tg",
      +  "tme",
      +  "whatsapp",
      +  "whats_app",
      +  "whats",
      +  "wa"
      +]
    • changedInput schema / properties / platform_posts / items / properties / settings / properties / title / description
      Previous value: -"Optional title metadata. Provide it for YouTube, WordPress, Reddit, or Blogger when those platforms are selected."New value: +"Optional title metadata. Provide it for YouTube, WordPress, or Blogger when those platforms are selected."
  3. Changed2 schema fields changed
    • addedInput schema / properties / custom_replies
      Added value: +{
      +  "description": "Shared first comment or follow-up sequence for supported selected platforms. Text and links only. Platform custom replies replace shared replies. Omit on update to preserve; [] clears shared replies.",
      +  "items": {
      +    "additionalProperties": false,
      +    "properties": {
      +      "delay_minutes": {
      +        "maximum": 525600,
      +        "minimum": 0,
      +        "type": "integer"
      +      },
      +      "text": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "text"
      +    ],
      +    "type": "object"
      +  },
      +  "maxItems": 50,
      +  "type": "array"
      +}
    • addedInput schema / properties / custom_reply_modes
      Added value: +{
      +  "additionalProperties": true,
      +  "description": "Per-platform reply selection: shared, custom, or off. Omit to preserve existing behavior. Custom settings replace rather than append. Property values may use multiple equivalent input shapes; the server normalizes them.",
      +  "type": "object"
      +}
  4. Changed1 schema field changed
    • addedInput schema / properties / platform_posts / items / properties / settings / properties / custom_replies
      Added value: +{
      +  "description": "Custom replies for facebook, instagram, linkedin, youtube, x, threads, bluesky. Minutes after parent publication. X/Threads/Bluesky allow media; other platforms text and links only. Do not also supply legacy reply fields.",
      +  "items": {
      +    "additionalProperties": false,
      +    "properties": {
      +      "delay_minutes": {
      +        "maximum": 525600,
      +        "minimum": 0,
      +        "type": "integer"
      +      },
      +      "media": {
      +        "items": {
      +          "type": "object"
      +        },
      +        "type": "array"
      +      },
      +      "text": {
      +        "description": "Plain links remain text; explicit [image](URL) or [video](URL) markers attach media.",
      +        "type": "string"
      +      }
      +    },
      +    "type": "object"
      +  },
      +  "maxItems": 50,
      +  "type": "array"
      +}
  5. Changed5 schema fields changed
    • addedInput schema / properties / one_off_schedule
      Added value: +{
      +  "additionalProperties": true,
      +  "properties": {
      +    "one_off_date": {
      +      "description": "Local calendar date for the one-time post, normally YYYY-MM-DD.",
      +      "type": "string"
      +    },
      +    "time": {
      +      "description": "Local time of day in 24-hour format, for example 09:00 or 18:30:00.",
      +      "type": "string"
      +    },
      +    "timezone": {
      +      "description": "IANA timezone used to interpret the local date and time, for example Africa/Lagos or America/New_York.",
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "one_off_date",
      +    "time",
      +    "timezone"
      +  ],
      +  "type": "object"
      +}
    • changedInput schema / properties / platform_posts / items / properties / settings / properties / recurring_schedule / properties / expression / description
      Previous value: -"Cron or rate expression describing the recurring schedule."New value: +"AWS six-field cron or rate expression. rate(4 weeks) and every 4 weeks normalize to rate(28 days): elapsed duration, so local clock time may shift across daylight saving changes. Use cron for named-timezone wall-clock recurrence. recurring=true is inferred."
    • changedInput schema / properties / platform_posts / items / properties / settings / properties / recurring_schedule / properties / timezone / description
      Previous value: -"IANA timezone used to interpret the recurring schedule."New value: +"IANA timezone for cron wall-clock times and local start/end dates. Rate intervals remain elapsed duration across daylight saving changes."
    • addedInput schema / properties / recurring_schedule
      Added value: +{
      +  "additionalProperties": true,
      +  "properties": {
      +    "day_of_month": {
      +      "maximum": 31,
      +      "minimum": 1,
      +      "type": "integer"
      +    },
      +    "end_date": {
      +      "type": "string"
      +    },
      +    "expression": {
      +      "description": "AWS six-field cron or rate expression. rate(4 weeks) and every 4 weeks normalize to rate(28 days): elapsed duration, so local clock time may shift across daylight saving changes. Use cron for named-timezone wall-clock recurrence. recurring=true is inferred.",
      +      "type": "string"
      +    },
      +    "rate_unit": {
      +      "enum": [
      +        "minute",
      +        "minutes",
      +        "hour",
      +        "hours",
      +        "day",
      +        "days",
      +        "week",
      +        "weeks"
      +      ],
      +      "type": "string"
      +    },
      +    "rate_value": {
      +      "minimum": 1,
      +      "type": "integer"
      +    },
      +    "start_date": {
      +      "type": "string"
      +    },
      +    "time": {
      +      "type": "string"
      +    },
      +    "timezone": {
      +      "description": "IANA timezone for cron wall-clock times and local start/end dates. Rate intervals remain elapsed duration across daylight saving changes.",
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "expression",
      +    "timezone"
      +  ],
      +  "type": "object"
      +}
    • addedOutput schema / properties / schedules
      Added value: +{
      +  "items": {
      +    "type": "object"
      +  },
      +  "type": "array"
      +}
  6. Changed1 schema field changed
    • changedInput schema / properties / platform_posts / items / properties / settings / description
      Previous value: -"Optional platform-specific settings. Set only fields relevant to the selected platform. identifier is optional; when provided it must match platform_posts[].identifier. Call postly_get_channel_schema for exact platform guidance."New value: +"Optional platform-specific settings. Set only fields relevant to the selected platform. identifier is optional; when provided it must match platform_posts[].identifier. Blog connectors support posts only: Page/page_type/post_type requests are rejected. Call postly_get_channel_schema for exact platform guidance."
  7. Changed2 schema fields changed
    • changedInput schema / properties / platform_posts / items / properties / identifier / enum
      Previous value: -[
      -  "facebook",
      -  "fb",
      -  "fb_page",
      -  "fbpage",
      -  "facebook_page",
      -  "facebookpage",
      -  "meta_page",
      -  "metapage",
      -  "instagram",
      -  "insta",
      -  "ig",
      -  "linkedin",
      -  "linked_in",
      -  "linked",
      -  "lnkd",
      -  "linkdin",
      -  "linkedin_page",
      -  "linkedinpage",
      -  "x",
      -  "twitter",
      -  "x_twitter",
      -  "xtwitter",
      -  "googleMyBusiness",
      -  "google_my_business",
      -  "google_business",
      -  "googlebusiness",
      -  "google_business_profile",
      -  "googlebusinessprofile",
      -  "business_profile",
      -  "businessprofile",
      -  "google_maps",
      -  "googlemaps",
      -  "gmb",
      -  "gbp",
      -  "reddit",
      -  "pinterest",
      -  "pin",
      -  "youtube",
      -  "you_tube",
      -  "yt",
      -  "youtu",
      -  "yt_channel",
      -  "ytchannel",
      -  "youtube_channel",
      -  "youtubechannel",
      -  "youtube_shorts",
      -  "youtubeshorts",
      -  "tiktok",
      -  "tik_tok",
      -  "tik",
      -  "tok",
      -  "wordpress",
      -  "word_press",
      -  "wp",
      -  "blogger",
      -  "blogspot",
      -  "threads",
      -  "thread",
      -  "bluesky",
      -  "blue_sky",
      -  "bsky",
      -  "telegram",
      -  "tg",
      -  "tme",
      -  "whatsapp",
      -  "whats_app",
      -  "whats",
      -  "wa"
      -]New value: +[
      +  "facebook",
      +  "fb",
      +  "fb_page",
      +  "fbpage",
      +  "facebook_page",
      +  "facebookpage",
      +  "meta_page",
      +  "metapage",
      +  "instagram",
      +  "insta",
      +  "ig",
      +  "linkedin",
      +  "linked_in",
      +  "linked",
      +  "lnkd",
      +  "linkdin",
      +  "linkedin_page",
      +  "linkedinpage",
      +  "x",
      +  "twitter",
      +  "x_twitter",
      +  "xtwitter",
      +  "googleMyBusiness",
      +  "google_my_business",
      +  "google_business",
      +  "googlebusiness",
      +  "google_business_profile",
      +  "googlebusinessprofile",
      +  "business_profile",
      +  "businessprofile",
      +  "google_maps",
      +  "googlemaps",
      +  "gmb",
      +  "gbp",
      +  "reddit",
      +  "pinterest",
      +  "pin",
      +  "youtube",
      +  "you_tube",
      +  "yt",
      +  "youtu",
      +  "yt_channel",
      +  "ytchannel",
      +  "youtube_channel",
      +  "youtubechannel",
      +  "youtube_shorts",
      +  "youtubeshorts",
      +  "tiktok",
      +  "tik_tok",
      +  "tik",
      +  "tok",
      +  "wordpress",
      +  "word_press",
      +  "wp",
      +  "ghost",
      +  "hashnode",
      +  "hash_node",
      +  "devto",
      +  "dev_to",
      +  "dev.to",
      +  "forem",
      +  "blogger",
      +  "blogspot",
      +  "threads",
      +  "thread",
      +  "bluesky",
      +  "blue_sky",
      +  "bsky",
      +  "telegram",
      +  "tg",
      +  "tme",
      +  "whatsapp",
      +  "whats_app",
      +  "whats",
      +  "wa"
      +]
    • changedInput schema / properties / platform_posts / items / properties / settings / properties / identifier / enum
      Previous value: -[
      -  "facebook",
      -  "fb",
      -  "fb_page",
      -  "fbpage",
      -  "facebook_page",
      -  "facebookpage",
      -  "meta_page",
      -  "metapage",
      -  "instagram",
      -  "insta",
      -  "ig",
      -  "linkedin",
      -  "linked_in",
      -  "linked",
      -  "lnkd",
      -  "linkdin",
      -  "linkedin_page",
      -  "linkedinpage",
      -  "x",
      -  "twitter",
      -  "x_twitter",
      -  "xtwitter",
      -  "googleMyBusiness",
      -  "google_my_business",
      -  "google_business",
      -  "googlebusiness",
      -  "google_business_profile",
      -  "googlebusinessprofile",
      -  "business_profile",
      -  "businessprofile",
      -  "google_maps",
      -  "googlemaps",
      -  "gmb",
      -  "gbp",
      -  "reddit",
      -  "pinterest",
      -  "pin",
      -  "youtube",
      -  "you_tube",
      -  "yt",
      -  "youtu",
      -  "yt_channel",
      -  "ytchannel",
      -  "youtube_channel",
      -  "youtubechannel",
      -  "youtube_shorts",
      -  "youtubeshorts",
      -  "tiktok",
      -  "tik_tok",
      -  "tik",
      -  "tok",
      -  "wordpress",
      -  "word_press",
      -  "wp",
      -  "blogger",
      -  "blogspot",
      -  "threads",
      -  "thread",
      -  "bluesky",
      -  "blue_sky",
      -  "bsky",
      -  "telegram",
      -  "tg",
      -  "tme",
      -  "whatsapp",
      -  "whats_app",
      -  "whats",
      -  "wa"
      -]New value: +[
      +  "facebook",
      +  "fb",
      +  "fb_page",
      +  "fbpage",
      +  "facebook_page",
      +  "facebookpage",
      +  "meta_page",
      +  "metapage",
      +  "instagram",
      +  "insta",
      +  "ig",
      +  "linkedin",
      +  "linked_in",
      +  "linked",
      +  "lnkd",
      +  "linkdin",
      +  "linkedin_page",
      +  "linkedinpage",
      +  "x",
      +  "twitter",
      +  "x_twitter",
      +  "xtwitter",
      +  "googleMyBusiness",
      +  "google_my_business",
      +  "google_business",
      +  "googlebusiness",
      +  "google_business_profile",
      +  "googlebusinessprofile",
      +  "business_profile",
      +  "businessprofile",
      +  "google_maps",
      +  "googlemaps",
      +  "gmb",
      +  "gbp",
      +  "reddit",
      +  "pinterest",
      +  "pin",
      +  "youtube",
      +  "you_tube",
      +  "yt",
      +  "youtu",
      +  "yt_channel",
      +  "ytchannel",
      +  "youtube_channel",
      +  "youtubechannel",
      +  "youtube_shorts",
      +  "youtubeshorts",
      +  "tiktok",
      +  "tik_tok",
      +  "tik",
      +  "tok",
      +  "wordpress",
      +  "word_press",
      +  "wp",
      +  "ghost",
      +  "hashnode",
      +  "hash_node",
      +  "devto",
      +  "dev_to",
      +  "dev.to",
      +  "forem",
      +  "blogger",
      +  "blogspot",
      +  "threads",
      +  "thread",
      +  "bluesky",
      +  "blue_sky",
      +  "bsky",
      +  "telegram",
      +  "tg",
      +  "tme",
      +  "whatsapp",
      +  "whats_app",
      +  "whats",
      +  "wa"
      +]
  8. Changed11 schema fields changed
    • removedInput schema / properties / media / items / properties / url / format
      Removed value: -"uri"
    • removedInput schema / properties / platform_posts / items / properties / media_override / items / properties / url / format
      Removed value: -"uri"
    • removedInput schema / properties / platform_posts / items / properties / settings / properties / one_off_schedule / properties / one_off_date / format
      Removed value: -"date"
    • removedInput schema / properties / platform_posts / items / properties / settings / properties / one_off_schedule / properties / time / pattern
      Removed value: -"^\\d{1,2}:\\d{2}(:\\d{2}(\\.\\d{1,6})?)?$"
    • removedInput schema / properties / platform_posts / items / properties / settings / properties / recurring_schedule / properties / end_date / format
      Removed value: -"date"
    • removedInput schema / properties / platform_posts / items / properties / settings / properties / recurring_schedule / properties / start_date / format
      Removed value: -"date"
    • removedInput schema / properties / platform_posts / items / properties / settings / properties / recurring_schedule / properties / time / pattern
      Removed value: -"^\\d{1,2}:\\d{2}(:\\d{2}(\\.\\d{1,6})?)?$"
    • changedInput schema / properties / target_platforms / description
      Previous value: -"Optional platform names, email/newsletter, provider names, or channel IDs. Use \"all\" or omit to validate against all connected workspace publishing targets."New value: +"Optional platform names, email/newsletter, provider names, or channel IDs. Use \"all\" or omit to validate against all connected workspace publishing targets. You may also pass a single string on clients that support that shorthand."
    • addedInput schema / properties / target_platforms / items
      Added value: +{
      +  "type": "string"
      +}
    • removedInput schema / properties / target_platforms / oneOf
      Removed value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "items": {
      -      "type": "string"
      -    },
      -    "type": "array"
      -  }
      -]
    • addedInput schema / properties / target_platforms / type
      Added value: +"array"
  9. Changed14 schema fields changed
    • removedInput schema / properties / media / items / anyOf
      Removed value: -[
      -  {
      -    "required": [
      -      "url"
      -    ]
      -  },
      -  {
      -    "required": [
      -      "remote_url"
      -    ]
      -  }
      -]
    • addedInput schema / properties / media / items / description
      Added value: +"Media object for an already-hosted file. Use url for the media location."
    • removedInput schema / properties / media / items / properties / remote_url
      Removed value: -{
      -  "description": "Public or Postly-hosted media URL. Either remote_url or url is required.",
      -  "format": "uri",
      -  "type": "string"
      -}
    • changedInput schema / properties / media / items / properties / url / description
      Previous value: -"Public or Postly-hosted media URL. Either url or remote_url is required."New value: +"Public or Postly-hosted media URL."
    • addedInput schema / properties / media / items / required
      Added value: +[
      +  "url"
      +]
    • removedInput schema / properties / platform_posts / items / properties / media_override / items / anyOf
      Removed value: -[
      -  {
      -    "required": [
      -      "url"
      -    ]
      -  },
      -  {
      -    "required": [
      -      "remote_url"
      -    ]
      -  }
      -]
    • addedInput schema / properties / platform_posts / items / properties / media_override / items / description
      Added value: +"Media object for an already-hosted file. Use url for the media location."
    • removedInput schema / properties / platform_posts / items / properties / media_override / items / properties / remote_url
      Removed value: -{
      -  "description": "Public or Postly-hosted media URL. Either remote_url or url is required.",
      -  "format": "uri",
      -  "type": "string"
      -}
    • changedInput schema / properties / platform_posts / items / properties / media_override / items / properties / url / description
      Previous value: -"Public or Postly-hosted media URL. Either url or remote_url is required."New value: +"Public or Postly-hosted media URL."
    • addedInput schema / properties / platform_posts / items / properties / media_override / items / required
      Added value: +[
      +  "url"
      +]
    • changedInput schema / properties / platform_posts / items / properties / settings / description
      Previous value: -"Platform-specific settings. identifier is optional; when provided it must match platform_posts[].identifier. Call postly_get_channel_schema for the exact platform guidance."New value: +"Optional platform-specific settings. Set only fields relevant to the selected platform. identifier is optional; when provided it must match platform_posts[].identifier. Call postly_get_channel_schema for exact platform guidance."
    • changedInput schema / properties / platform_posts / items / properties / settings / properties / recipient_phone_numbers / description
      Previous value: -"Required for WhatsApp template publishing."New value: +"WhatsApp recipient phone numbers. Provide them only when publishing a WhatsApp template message."
    • changedInput schema / properties / platform_posts / items / properties / settings / properties / template_name / description
      Previous value: -"Required for WhatsApp template publishing."New value: +"WhatsApp template name. Provide it only when publishing a WhatsApp template message."
    • changedInput schema / properties / platform_posts / items / properties / settings / properties / title / description
      Previous value: -"Required for YouTube, WordPress, Reddit, and Blogger posts."New value: +"Optional title metadata. Provide it for YouTube, WordPress, Reddit, or Blogger when those platforms are selected."
  10. Changed7 schema fields changed
    • addedInput schema / properties / media / items / additionalProperties
      Added value: +true
    • addedInput schema / properties / media / items / anyOf
      Added value: +[
      +  {
      +    "required": [
      +      "url"
      +    ]
      +  },
      +  {
      +    "required": [
      +      "remote_url"
      +    ]
      +  }
      +]
    • addedInput schema / properties / media / items / properties
      Added value: +{
      +  "alt_text": {
      +    "type": "string"
      +  },
      +  "name": {
      +    "type": "string"
      +  },
      +  "remote_url": {
      +    "description": "Public or Postly-hosted media URL. Either remote_url or url is required.",
      +    "format": "uri",
      +    "type": "string"
      +  },
      +  "type": {
      +    "description": "Media type such as image, video, audio, image/png, video/mp4, or application/pdf.",
      +    "type": "string"
      +  },
      +  "url": {
      +    "description": "Public or Postly-hosted media URL. Either url or remote_url is required.",
      +    "format": "uri",
      +    "type": "string"
      +  }
      +}
    • changedInput schema / properties / platform_posts / description
      Previous value: -"Optional platform-specific overrides. Use postly.get_channel_schema for the selected platform before supplying settings."New value: +"Optional platform-specific overrides. Use postly_get_channel_schema for the selected platform before supplying settings."
    • addedInput schema / properties / platform_posts / items / additionalProperties
      Added value: +true
    • addedInput schema / properties / platform_posts / items / properties
      Added value: +{
      +  "identifier": {
      +    "description": "Target platform for this override. Common aliases such as linked_in, google_my_business, and twitter are accepted and normalized before publishing. Must match one of the platforms selected by target_platforms.",
      +    "enum": [
      +      "facebook",
      +      "fb",
      +      "fb_page",
      +      "fbpage",
      +      "facebook_page",
      +      "facebookpage",
      +      "meta_page",
      +      "metapage",
      +      "instagram",
      +      "insta",
      +      "ig",
      +      "linkedin",
      +      "linked_in",
      +      "linked",
      +      "lnkd",
      +      "linkdin",
      +      "linkedin_page",
      +      "linkedinpage",
      +      "x",
      +      "twitter",
      +      "x_twitter",
      +      "xtwitter",
      +      "googleMyBusiness",
      +      "google_my_business",
      +      "google_business",
      +      "googlebusiness",
      +      "google_business_profile",
      +      "googlebusinessprofile",
      +      "business_profile",
      +      "businessprofile",
      +      "google_maps",
      +      "googlemaps",
      +      "gmb",
      +      "gbp",
      +      "reddit",
      +      "pinterest",
      +      "pin",
      +      "youtube",
      +      "you_tube",
      +      "yt",
      +      "youtu",
      +      "yt_channel",
      +      "ytchannel",
      +      "youtube_channel",
      +      "youtubechannel",
      +      "youtube_shorts",
      +      "youtubeshorts",
      +      "tiktok",
      +      "tik_tok",
      +      "tik",
      +      "tok",
      +      "wordpress",
      +      "word_press",
      +      "wp",
      +      "blogger",
      +      "blogspot",
      +      "threads",
      +      "thread",
      +      "bluesky",
      +      "blue_sky",
      +      "bsky",
      +      "telegram",
      +      "tg",
      +      "tme",
      +      "whatsapp",
      +      "whats_app",
      +      "whats",
      +      "wa"
      +    ],
      +    "type": "string"
      +  },
      +  "media_override": {
      +    "description": "Optional media to use for this platform instead of the base media.",
      +    "items": {
      +      "additionalProperties": true,
      +      "anyOf": [
      +        {
      +          "required": [
      +            "url"
      +          ]
      +        },
      +        {
      +          "required": [
      +            "remote_url"
      +          ]
      +        }
      +      ],
      +      "properties": {
      +        "alt_text": {
      +          "type": "string"
      +        },
      +        "name": {
      +          "type": "string"
      +        },
      +        "remote_url": {
      +          "description": "Public or Postly-hosted media URL. Either remote_url or url is required.",
      +          "format": "uri",
      +          "type": "string"
      +        },
      +        "type": {
      +          "description": "Media type such as image, video, audio, image/png, video/mp4, or application/pdf.",
      +          "type": "string"
      +        },
      +        "url": {
      +          "description": "Public or Postly-hosted media URL. Either url or remote_url is required.",
      +          "format": "uri",
      +          "type": "string"
      +        }
      +      },
      +      "type": "object"
      +    },
      +    "type": "array"
      +  },
      +  "settings": {
      +    "additionalProperties": true,
      +    "description": "Platform-specific settings. identifier is optional; when provided it must match platform_posts[].identifier. Call postly_get_channel_schema for the exact platform guidance.",
      +    "properties": {
      +      "description": {
      +        "type": "string"
      +      },
      +      "first_comment": {
      +        "type": "string"
      +      },
      +      "first_comments": {
      +        "items": {
      +          "additionalProperties": true,
      +          "type": "object"
      +        },
      +        "type": "array"
      +      },
      +      "identifier": {
      +        "description": "Optional platform identifier. Aliases are accepted and normalized to the canonical platform.",
      +        "enum": [
      +          "facebook",
      +          "fb",
      +          "fb_page",
      +          "fbpage",
      +          "facebook_page",
      +          "facebookpage",
      +          "meta_page",
      +          "metapage",
      +          "instagram",
      +          "insta",
      +          "ig",
      +          "linkedin",
      +          "linked_in",
      +          "linked",
      +          "lnkd",
      +          "linkdin",
      +          "linkedin_page",
      +          "linkedinpage",
      +          "x",
      +          "twitter",
      +          "x_twitter",
      +          "xtwitter",
      +          "googleMyBusiness",
      +          "google_my_business",
      +          "google_business",
      +          "googlebusiness",
      +          "google_business_profile",
      +          "googlebusinessprofile",
      +          "business_profile",
      +          "businessprofile",
      +          "google_maps",
      +          "googlemaps",
      +          "gmb",
      +          "gbp",
      +          "reddit",
      +          "pinterest",
      +          "pin",
      +          "youtube",
      +          "you_tube",
      +          "yt",
      +          "youtu",
      +          "yt_channel",
      +          "ytchannel",
      +          "youtube_channel",
      +          "youtubechannel",
      +          "youtube_shorts",
      +          "youtubeshorts",
      +          "tiktok",
      +          "tik_tok",
      +          "tik",
      +          "tok",
      +          "wordpress",
      +          "word_press",
      +          "wp",
      +          "blogger",
      +          "blogspot",
      +          "threads",
      +          "thread",
      +          "bluesky",
      +          "blue_sky",
      +          "bsky",
      +          "telegram",
      +          "tg",
      +          "tme",
      +          "whatsapp",
      +          "whats_app",
      +          "whats",
      +          "wa"
      +        ],
      +        "type": "string"
      +      },
      +      "one_off_schedule": {
      +        "additionalProperties": true,
      +        "properties": {
      +          "one_off_date": {
      +            "description": "Local calendar date for the one-time post, normally YYYY-MM-DD.",
      +            "format": "date",
      +            "type": "string"
      +          },
      +          "time": {
      +            "description": "Local time of day in 24-hour format, for example 09:00 or 18:30:00.",
      +            "pattern": "^\\d{1,2}:\\d{2}(:\\d{2}(\\.\\d{1,6})?)?$",
      +            "type": "string"
      +          },
      +          "timezone": {
      +            "description": "IANA timezone used to interpret the local date and time, for example Africa/Lagos or America/New_York.",
      +            "type": "string"
      +          }
      +        },
      +        "required": [
      +          "one_off_date",
      +          "time",
      +          "timezone"
      +        ],
      +        "type": "object"
      +      },
      +      "privacy": {
      +        "enum": [
      +          "Public",
      +          "Private",
      +          "Unlisted"
      +        ],
      +        "type": "string"
      +      },
      +      "privacy_level": {
      +        "enum": [
      +          "PUBLIC_TO_EVERYONE",
      +          "MUTUAL_FOLLOW_FRIENDS",
      +          "FOLLOWER_OF_CREATOR",
      +          "SELF_ONLY"
      +        ],
      +        "type": "string"
      +      },
      +      "publishing_mode": {
      +        "description": "X publishing mode. Use thread, numbered_thread, or long_form for X text over 280 characters.",
      +        "enum": [
      +          "classic",
      +          "thread",
      +          "numbered_thread",
      +          "long_form"
      +        ],
      +        "type": "string"
      +      },
      +      "recipient_phone_numbers": {
      +        "description": "Required for WhatsApp template publishing.",
      +        "items": {
      +          "type": "string"
      +        },
      +        "type": "array"
      +      },
      +      "recurring_schedule": {
      +        "additionalProperties": true,
      +        "properties": {
      +          "day_of_month": {
      +            "maximum": 31,
      +            "minimum": 1,
      +            "type": "integer"
      +          },
      +          "end_date": {
      +            "format": "date",
      +            "type": "string"
      +          },
      +          "expression": {
      +            "description": "Cron or rate expression describing the recurring schedule.",
      +            "type": "string"
      +          },
      +          "rate_unit": {
      +            "enum": [
      +              "minute",
      +              "minutes",
      +              "hour",
      +              "hours",
      +              "day",
      +              "days",
      +              "week",
      +              "weeks"
      +            ],
      +            "type": "string"
      +          },
      +          "rate_value": {
      +            "minimum": 1,
      +            "type": "integer"
      +          },
      +          "start_date": {
      +            "format": "date",
      +            "type": "string"
      +          },
      +          "time": {
      +            "pattern": "^\\d{1,2}:\\d{2}(:\\d{2}(\\.\\d{1,6})?)?$",
      +            "type": "string"
      +          },
      +          "timezone": {
      +            "description": "IANA timezone used to interpret the recurring schedule.",
      +            "type": "string"
      +          }
      +        },
      +        "required": [
      +          "expression",
      +          "timezone"
      +        ],
      +        "type": "object"
      +      },
      +      "template_name": {
      +        "description": "Required for WhatsApp template publishing.",
      +        "type": "string"
      +      },
      +      "title": {
      +        "description": "Required for YouTube, WordPress, Reddit, and Blogger posts.",
      +        "type": "string"
      +      }
      +    },
      +    "type": "object"
      +  },
      +  "text_override": {
      +    "description": "Optional text to use for this platform instead of the base text.",
      +    "type": "string"
      +  }
      +}
    • addedInput schema / properties / platform_posts / items / required
      Added value: +[
      +  "identifier"
      +]
  11. First observed

TDQS

A3.8/5.0
Behavior4/5

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

Annotations already declare readOnly/true, idempotent, non-destructive, so safety is covered. The description adds genuine value by naming the outputs an agent can expect: validation status, errors, warnings, platform readiness, and applicable limits — telling the agent this is a diagnostic call with structured feedback.

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?

Two tight sentences with no waste: the first states what is validated, the second states what is returned. Scope and result are front-loaded, which is ideal for a diagnostic tool.

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

Completeness4/5

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

Given an output schema exists and annotations cover the safety profile, the description is nearly complete. A minor gap is the absence of prerequisites (e.g. that target platforms must be connected or that channel schema should be consulted first), which siblings like postly_get_channel_schema handle, but nothing critical is missing for correct invocation.

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?

Schema coverage is 80% and the schema is highly detailed (enums, nested media, schedules), so it already carries most parameter meaning. The description mostly restates the input categories (text, media, settings, schedules, targets) rather than adding new syntax or constraints beyond the schema, matching the baseline-3 rule.

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

Purpose4/5

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

States a specific verb ('checks...against requirements') and enumerates exactly what is validated: text, media, platform settings, schedules, targets. The verb 'validate' plus the returned fields clearly distinguish it from mutating siblings like postly_create_post. It stops short of explicitly naming those siblings, keeping it at 4.

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

Usage Guidelines3/5

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

The framing implies a pre-flight check before creating/updating a post, but there is no explicit 'use this before calling create_post' guidance nor any when-not condition. A capable agent can infer the purpose, but the description leaves the workflow relationship to inference.

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

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