Marker Sync

marker-sync

Keep Marker.io and an external tracker (GitHub Issues, Linear, Jira) consistent: full diagnostic context flows into the tracker, resolution flows back to Marker. Eliminates the "closed in the tracker, still open in Marker.io" mismatch.

When to use

"Pull new marker issues into <tracker>", "enrich these tickets with marker context", "mark the done ones ready to test in github and resolved in marker", "are marker and linear out of sync".

Prerequisites

A connected tracker. Use whatever the user has: GitHub via the gh CLI, Linear via mcp__linear__*, Jira via its MCP/CLI. If none is connected, say so and stop.

Matching issues across systems

Match a Marker.io issue to its tracker item by, in order: an explicit Marker link/ID in the tracker item, the issue URL, then a close title match. When unsure, list the candidate pairs and ask.

Steps

1. Pull new/updated Marker.io issues (issues_list, recent window). Pull the corresponding tracker

items in one pass.

1. Enrich thin tracker items: for any tracker ticket missing diagnostic context, add the Marker

screenshot link, console errors, failing network requests, and browser/OS from issue_get_context (plus drill-downs). Propose the edit before writing to the tracker.

1. Reconcile status both ways. Build a table of every pair and its two statuses. Flag mismatches

(resolved on one side, open on the other).

1. On close: when a fix has landed, set the tracker state (e.g. "Ready to Test") and the Marker.io

status to its resolved equivalent (issue_update_status, discovered via project_get), and document the root cause + fix as a comment on both sides (comment_create on Marker).

Gating

Every write (tracker edits, Marker status changes, comments) is proposed as a table first and applied only after confirmation. Never close an issue on one side without updating the other.

Operating rules

This skill drives the Marker.io MCP. Read tools: projects_list, project_get, project_list_users, list_issue_types, issues_list, issue_get, issue_get_context, issue_get_screenshot, issue_get_attachments, issue_get_console_log, issue_get_network_request. Write tools: issue_update_status, issue_update_assignee, issue_update_priority, issue_update_type, comment_create.

1. Resolve the project first. Call projects_list (filter with searchText). If more than one

could match, show the candidates and ask which one. Never guess a projectId.

1. Discover before you write. Status and issue-type strings are project-specific. Call

list_issue_types and project_get for valid values before any issue_update_*. Get user IDs from project_list_users before assigning or @mentioning.

1. Read cheap, drill deep only when it matters. Start from issue_get_context summaries; fetch a

specific issue_get_console_log(logIndex) / issue_get_network_request(requestIndex) or issue_get_screenshot only when it changes a decision.

1. Propose, then apply. Before any write, print a table of the planned changes (issue, field,

old to new). Apply via the *_update_* / comment_create tools only after the user confirms. Default comment visibility to Member-only unless the reporter should see it.

1. Respect the limits. issues_list does not return assignee (fetch per-issue via issue_get).

The MCP cannot create Marker.io issues. Never embed tokens; rely on the configured MCP auth.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: marker-io
• Source: marker-io/mcp-skills
• License: MIT
• Homepage: https://marker.io

Install and usage instructions live in the source repository linked above.