Postlyra MCP server

• apply_post_to_publicationwrite actionFree

  Use when the author explicitly asks to apply a working post revision to one selected scheduled or delivered Telegram publication. Other destinations stay unchanged. Read the post revision and publicationId first.

• archive_postwrite actionFree

  Use when the author asks to archive a post and cancel its pending publications. Already delivered Telegram messages stay available. Restore later with restore_post.

• attach_mediaFree

  Use when adding a finalized owner mediaId to a working post. Read the post revision first. Images and videos become media blocks; other files become a link. Does not publish or change existing delivery snapshots.

• attach_media_to_draftFree

  Use this when adding images without changing draft text. Pass mediaFile1..mediaFile6 or mediaFiles: six total, JPEG/PNG/GIF/WebP, 10 MiB each. Exact placement uses update_post_draft with richDocument slot bindings. Returns JPEG and enables a public preview link. Display the image in the FINAL answer via native attachment or display.imageMarkdown. On error follow nextAction. May fetch external image URLs during import or screenshot rendering. Never publishes.

• cancel_publicationwrite actionFree

  Use when the author asks to cancel one pending publication. Preserves the source post and its history. A publication already being sent cannot be canceled.

• copy_postwrite actionFree

  Use when reusing an existing post as a new independent draft. Copies formatting, media and buttons; does not copy publication jobs or publish.

• create_media_uploadwrite actionFree

  Use when uploading a local image, video or document from any MCP client. Returns a short-lived PUT URL, headers and uploadIntentId. Upload the actual bytes, then call finalize_media_upload. A local filesystem path cannot be read by the server.

• create_post_draftwrite actionFree

  Use this when creating a Telegram draft. Read get_formatting_capabilities; prefer finished richDocument, which overrides text/preset/template. Bind mediaFile1..mediaFile6 or mediaFiles slots as media.src. Returns draftId, JPEG and public preview link. Display the image in the FINAL answer via native attachment or display.imageMarkdown. Inspect preview_post. May fetch external image URLs during import or screenshot rendering. Never publishes.

• create_templatewrite actionFree

  Use when the author asks to save a reusable post layout. Supply a name and RichDocument. Creates an owner-only template without publishing.

• delete_publicationwrite actionFree

  Use only when the author explicitly asks to delete one message previously published by Postlyra. Supply its publicationId. The source post and messages in other destinations remain available.

• delete_templatewrite actionFree

  Use when the author asks to delete their saved template. Existing posts made from it are preserved.

• finalize_media_uploadwrite actionFree

  Use after uploading bytes to the URL from create_media_upload. Verifies file content, size and ownership and returns a durable mediaId for attach_media. Expired or invalid uploads are rejected.

• get_auth_statusFree

  Use this when you need to check whether the current MCP caller is authorized through Telegram and linked to a Postlyra account.

• get_content_attentionFree

  Use when reviewing unfinished drafts, formatting or media problems, lost publishing permissions, failed deliveries and gaps in the author's publication target. Does not read private Telegram Business conversations or send messages.

• get_formatting_capabilitiesFree

  Use this when composing or formatting any Postlyra post: call it FIRST, once per task. Postlyra creates beautifully structured rich Telegram posts, illustrated instructions, articles and presentations. Returns the complete RichDocument contract: exact JSON examples for every block and inline mark, nesting, limits, file uploads, error recovery, presets and which tool to use next. Use this contract for formatting; Telegram MarkdownV2/parse_mode documentation is not needed.

• get_postwrite actionFree

  Use when reading an existing post and its current revision before editing. Returns the working document without enabling a public preview or publishing anything.

• get_workspaceFree

  Use when checking publication quotas, storage, connected chat count or the account time zone before planning content.

• list_channelsFree

  Use this when you need to list Telegram channels, groups, and chats the authorized user can manage through Postlyra.

• list_publicationsFree

  Use when inspecting scheduled publications, delivery failures or messages previously published by Postlyra. Returns publicationId for rescheduling, cancellation, targeted edits or deletion.

• list_templatesFree

  Use this when the user wants an existing reusable Postlyra layout template. Optional for custom composition. For supported blocks, JSON syntax or formatting choices call get_formatting_capabilities; this tool lists saved templates and their ids.

• preview_postwrite actionFree

  Use this when requesting a saved draft screenshot, public browser preview or validation warnings. Find draftId with search_post_drafts. Returns documentJson/richHtml, JPEG and enables a public preview link. Use show_post_card for an in-chat card. Follow display.instruction; check screenshot.truncated and retry unavailable screenshots without recreating the draft. May fetch external image URLs for screenshot rendering. Never publishes.

• publish_postwrite actionFree

  Use this when the user explicitly authorizes publishing a reviewed existing Postlyra rich draft to a connected Telegram channel. Resolve channelId using list_channels, inspect preview_post, and supply confirmed=true plus confirmationText containing the user's authorization. Reuse idempotencyKey on retry. Queued/retrying means pending, not delivered. This is the external publication action; draft tools never send.

• reschedule_publicationFree

  Use when the author asks to change the date or time of one pending publication. Supply its publicationId and a concrete ISO date with UTC offset. Does not change its content.

• restore_postwrite actionFree

  Use when restoring an archived Postlyra post as a working draft. Previously canceled publication jobs are not restarted.

• schedule_postwrite actionFree

  Use when the author explicitly asks to schedule a post to a connected channel or group. Supply an exact ISO date with UTC offset and an idempotency key. The server uses the shared publishing rules and stores an immutable delivery snapshot.

• search_post_draftswrite actionFree

  Use this when finding an existing draft by topic, title or content. Search first when draftId is unknown; do not ask for a link. Matches all keywords/fragments in title and rich text, ignoring case. Empty query lists recent drafts. Follow nextCursor while hasMore. For an in-chat card, pass the returned draftId as postId to show_post_card; use preview_post for a screenshot/browser preview. Returns owner-only IDs and snippets. Never edits, enables sharing or publishes.

• search_postsFree

  Use when finding any existing Postlyra post, including scheduled, published or archived content. Search owner content by words, status, connected channel and update dates. Read the selected post with get_post.

• show_post_cardwrite actionFree

  Use this when the author asks to show a post card inside the chat or choose publication controls there. After search_posts or search_post_drafts, pass the found post ID as postId. Renders the MCP Apps UI with preview, text editing and scheduling. A screenshot or preview_post URL is not this UI. Opens no public link and never publishes or schedules on its own. If unavailable, refresh the connection's tool metadata; clients without UI retain text/tool workflows.

• update_postwrite actionFree

  Use when changing a post's working content, title, buttons or attention flag. Read its revision first. Scheduled and sent messages remain on their own snapshots until apply_post_to_publication is requested.

• update_post_draftwrite actionFree

  Use this when editing a draft. Read preview_post and get_formatting_capabilities. Send the complete edited richDocument, preserving untouched content and media; text replaces layout. Bind imported file slots as media.src. Returns JPEG and enables a public preview link. Display the image in the FINAL answer via native attachment or display.imageMarkdown. Inspect preview_post. May fetch external image URLs during import or screenshot rendering. Never publishes.

• update_templatewrite actionFree

  Use when changing the author's saved template. System templates and other users' templates cannot be edited.

• update_workspacewrite actionFree

  Use when the author asks to change the account time zone, weekly publication target or content reminder preference. Does not change existing publication times.

• –Code scanremote-only server, no package to scann/a
• Live reliabilityremote reachable in 1939ms20/20
• Tool poisoning32 tool descriptions checked15/15
• Auth qualityopen endpoint exposes 21 write-action tools with no auth3/15
• Maintenancelast push 8 days ago15/15
• Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Postlyra: common questions

Is Postlyra MCP server safe?

Mostly: it is graded B (81/100). Read the Postlyra safety report

How do I install Postlyra?

It runs remotely at postlyra.app. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.

Does Postlyra need an API key?

Not as far as the registry entry and our scan can tell: no credentials are declared or required.

Is Postlyra maintained?

The last commit was 9 days ago (2026-09-11). The latest release is v0.2.0-rc.1.

Is Postlyra up?

100% of our last 6 checks got an answer. We check remote servers about four times a day.