Mermaid Chart
Validate and render Mermaid diagrams, search the icon sets they can use, and check syntax against the spec. No key required.
What Mermaid Chart exposes.
Every tool below is one this server advertised the last time Omniio refreshed it, under the mermaid-chart__ namespace. Your agent never loads them all — it searches, and gets the few that match.
mermaid-chart__create_issue6 arguments · 4 required
Create an issue in a GitHub repository. REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN with issues write if creating issues in private repos.
Required
ownerrepotitleclientNamemermaid-chart__create_pr9 arguments · 8 required
Create a new branch (git ref), one commit from the base tree with your file changes, then open a pull request in the same repository. REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN with `contents: write` (and no existing branch with the same `headBranch` name).
Required
ownerrepoheadBranchtitlebodycommitMessagefilesclientNamemermaid-chart__generate_jira_kanban_board6 arguments · 2 required
Generate a Mermaid kanban board from Jira issues. Issues are grouped into columns by their current status and ordered by workflow stage (To Do → In Progress → Done). Each card shows the issue summary and is a clickable link to the ticket, with optional assignee and priority badges.
Required
projectKeyclientNamemermaid-chart__generate_ticket_dependency_tree11 arguments · 2 required
Generate a Mermaid flowchart that visualises Jira issue dependency links for a project. Each node shows the ticket key, summary, and status, and is a clickable link to the ticket. Dashed nodes represent issues linked from outside the current filter set.
Required
projectKeyclientNamemermaid-chart__generate_ticket_diagram3 arguments · 2 required
Generate a Mermaid flowchart centred on a single Jira ticket. Fetches the ticket's subtasks, parent, issue links, and recent comments in one call. The focal ticket is highlighted in indigo; subtasks are grouped in a subgraph; issue links use colour-coded arrows (red thick = blocks, cyan dashed = relates to); comments appear in a rose subgraph.
Required
ticketKeyclientNamemermaid-chart__generate_ticket_timeline3 arguments · 2 required
Generate a Mermaid diagram showing the history of a single Jira ticket using its changelog. Two views are available: - **state**: stateDiagram-v2 showing all status transitions with dates and authors, nodes coloured by status category. - **timeline** (default): Mermaid timeline grouped by month, showing status changes, assignee changes, priority changes, sprint moves, and resolutions.
Required
ticketKeyclientNamemermaid-chart__get_diagram_summary3 arguments · 2 required
Generate a concise summary for a Mermaid diagram based on its content. This tool provides prompts for the LLM to generate a brief summary (2-4 sentences) highlighting the primary flow, key decisions, and outcomes.
Required
diagramContentclientNamemermaid-chart__get_diagram_title4 arguments · 2 required
Generate a descriptive title for a Mermaid diagram based on its content. This tool analyzes the diagram structure and content to suggest an appropriate title.
Required
diagramContentclientNamemermaid-chart__get_issue_comments6 arguments · 4 required
List comments on an issue by issue number. REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN / GH_TOKEN.
Required
ownerrepoissue_numberclientNamemermaid-chart__get_mermaid_syntax_document2 arguments · 2 required
Get comprehensive syntax documentation and examples for a specific Mermaid diagram type. Returns the official Mermaid.js documentation with syntax rules, examples, and usage instructions for the requested diagram type.
Required
diagramTypeclientNamemermaid-chart__get_notion_mermaid_diagram_by_block_id2 arguments · 2 required
Retrieve a single Mermaid diagram block by its block ID. Returns the diagram code and optional caption.
Required
blockIdclientNamemermaid-chart__get_notion_page_mermaid_diagrams2 arguments · 2 required
Extract all Mermaid code blocks from a Notion page. Returns block ID, diagram code, and optional caption for each block.
Required
pageUrlclientNamemermaid-chart__get_pull_comments6 arguments · 4 required
Get all pull request comments: both issue/PR thread comments and inline review comments, with a `type` of `issue_thread` or `review` per item. REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN / GH_TOKEN.
Required
ownerrepopull_numberclientNamemermaid-chart__insert_notion_mermaid_diagram4 arguments · 3 required
Append a Mermaid diagram as a code block to a Notion page. The block is added at the end of the page content.
Required
pageUrlcodeclientNamemermaid-chart__list_branches4 arguments · 3 required
List or resolve branch names. **List mode (default):** one `GET /repos/.../branches?per_page=100&page=1` — at most 100 names, A–Z sorted in the response; `has_more` if a full page was returned. **Resolve mode:** set `branch_name` for a single `GET` branch (404 if missing). At most one GitHub API call. REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN / GH_TOKEN.
Required
ownerrepoclientNamemermaid-chart__list_issues10 arguments · 3 required
List issues for a repository (excludes pull requests). REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN / GH_TOKEN.
Required
ownerrepoclientNamemermaid-chart__list_mermaid_files4 arguments · 3 required
List .mmd Mermaid files in a GitHub repository (code search with tree fallback). REQUIRES: `Github-Token` header (HTTP) or GITHUB_TOKEN / GH_TOKEN.
Required
ownerrepoclientNamemermaid-chart__list_pulls6 arguments · 3 required
List pull requests for a GitHub repository. REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN / GH_TOKEN.
Required
ownerrepoclientNamemermaid-chart__list_repos5 arguments · 1 required
List GitHub repositories for the authenticated user, or for an organization when `org` is set. REQUIRES: `Github-Token` header (HTTP) or `GITHUB_TOKEN` / `GH_TOKEN` in the server environment.
Required
clientNamemermaid-chart__list_tools1 argument
Lists all available MCP servers and their tools in the workspace.
mermaid-chart__push_file8 arguments · 7 required
Create or update a single file on a given branch in a GitHub repository. REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN with contents write access.
Required
ownerrepopathcontentbranchmessageclientNamemermaid-chart__read_mermaid_file5 arguments · 4 required
Read a single .mmd file from a GitHub repository. Only paths ending in .mmd are allowed. REQUIRES: `Github-Token` header (HTTP) or GITHUB_TOKEN / GH_TOKEN.
Required
ownerrepopathclientNamemermaid-chart__search_mermaid_icons4 arguments · 2 required
Search for available Mermaid icons by provider or name. Returns icons in ready-to-use format with provider prefixes (e.g., 'aws:arch-amazon-ec2'). PERFORMANCE TIP: For faster searches, start with limit=10 and specific queries. If no suitable icons found, increase limit and retry. Supports AWS, Azure, GCP, and FontAwesome icon sets.
Required
queryclientNamemermaid-chart__update_notion_mermaid_diagram4 arguments · 3 required
Update the Mermaid source code (and optional caption) of an existing mermaid code block by its block ID.
Required
blockIdcodeclientNamemermaid-chart__validate_and_render_mermaid_diagram5 arguments · 4 required
SIMPLE RENDER TOOL - Renders Mermaid diagrams directly (Mermaid automatically validates during rendering). If successful, returns diagram image. If Mermaid validation fails, returns error details for fixing. One tool, one call, simple workflow.
Required
promptmermaidCodediagramTypeclientName
Three steps, and the last one is not yours.
Point a client at Omniio
One URL, authorized once by your client. If you already use Omniio, this step is done.
Mermaid Chart is already on
It needs no credential, so it is on for every account from the first call.
Ask for what you need
The agent searches, reads the one schema it picked, and runs it. You do not name the tool.
claude mcp add --transport http omniio https://mcp.omniio.devOthers in the same category.
They share the endpoint, so having more than one on costs you nothing in context — the search decides which is relevant.
