Connect

8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "mermaid-mcp": {
      "type": "http",
      "url": "https://mcp.mermaidchart.com/mcp"
    }
  }
}

claude mcp add --transport http mermaid-mcp https://mcp.mermaidchart.com/mcp

[mcp_servers.mermaid-mcp]
url = "https://mcp.mermaidchart.com/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mermaid-mcp": {
      "type": "remote",
      "url": "https://mcp.mermaidchart.com/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "mermaid-mcp": {
      "type": "http",
      "url": "https://mcp.mermaidchart.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=mermaid-mcp&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLm1lcm1haWRjaGFydC5jb20vbWNwIn0%3D"
}

{
  "servers": {
    "mermaid-mcp": {
      "type": "http",
      "url": "https://mcp.mermaidchart.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "mermaid-mcp": {
      "httpUrl": "https://mcp.mermaidchart.com/mcp"
    }
  }
}

extensions:
  "mermaid-mcp":
    enabled: true
    name: "mermaid-mcp"
    type: streamable_http
    uri: "https://mcp.mermaidchart.com/mcp"
    timeout: 300

Quality 89 / 100good

protocoln/a · weight 25

n/a
protocol.modern, protocol.stateless, protocol.transport, protocol.list_ttlno remote answered a protocol handshake (not probed yet, unreachable, or local-only)

authorization83 · weight 15

pass
auth.prmProtected Resource Metadata (RFC 9728) published
pass
auth.as_metadataauthorization server metadata reachable
warn
auth.cimdonly Dynamic Client Registration, deprecated in 2026-07-28 in favour of CIMD
n/a
auth.secret_in_urlno templated URL

tool hygiene86 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations25 of 25 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: validate_and_render_mermaid_diagram (destructiveHint, idempotentHint, openWorldHint); create_pr (destructiveHint, idempotentHint, openWorldHint); list_pulls (destructiveHint, idempotentHint, openWorldHint); …
pass
tools.token_costabout 5,580 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

25 tools, about 5,580 tokens to load them all · tool set 37c6e245f217 · checked 2026-10-09 23:53 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 78 / 100

provenance75

liveness100

freshness25

hygiene100

+repository +dns-namespace +reachable +uptime-100% -stale-387d

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://mcp.mermaidchart.com/mcp` streamable-http	oauth2 AS: https://ummcsnegloedxcrwlucz.supabase.co/auth/v1	yes	100%	622 ms	–	2026-10-09
`https://mcp.mermaidchart.com/sse` sse	oauth2 AS: https://ummcsnegloedxcrwlucz.supabase.co/auth/v1	yes	100%	621 ms	–	2026-10-09

Tools (25)

`create_issue`	Create an issue in a GitHub repository. REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN with issues write if creating issues in private repos.
`create_pr`	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).
`generate_jira_kanban_board`read-only	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.
`generate_ticket_dependency_tree`read-only	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.
`generate_ticket_diagram`read-only	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.
`generate_ticket_timeline`read-only	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.
`get_diagram_summary`read-only	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.
`get_diagram_title`read-only	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.
`get_issue_comments`read-only	List comments on an issue by issue number. REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN / GH_TOKEN.
`get_mermaid_syntax_document`read-only	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.
`get_notion_mermaid_diagram_by_block_id`read-only	Retrieve a single Mermaid diagram block by its block ID. Returns the diagram code and optional caption.
`get_notion_page_mermaid_diagrams`read-only	Extract all Mermaid code blocks from a Notion page. Returns block ID, diagram code, and optional caption for each block.
`get_pull_comments`read-only	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.
`insert_notion_mermaid_diagram`	Append a Mermaid diagram as a code block to a Notion page. The block is added at the end of the page content.
`list_branches`read-only	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.
`list_issues`read-only	List issues for a repository (excludes pull requests). REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN / GH_TOKEN.
`list_mermaid_files`read-only	List .mmd Mermaid files in a GitHub repository (code search with tree fallback). REQUIRES: `Github-Token` header (HTTP) or GITHUB_TOKEN / GH_TOKEN.
`list_pulls`read-only	List pull requests for a GitHub repository. REQUIRES: `Github-Token` (HTTP) or GITHUB_TOKEN / GH_TOKEN.
`list_repos`read-only	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.
`list_tools`read-only	Lists all available MCP servers and their tools in the workspace.
`push_file`	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.
`read_mermaid_file`read-only	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.
`search_mermaid_icons`read-only	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.
`update_notion_mermaid_diagram`	Update the Mermaid source code (and optional caption) of an existing mermaid code block by its block ID.
`validate_and_render_mermaid_diagram`read-only	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.

Schemas: list_tools.

Official server.json

{
  "name": "com.mermaidchart/mermaid-mcp",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.mermaidchart.com/mcp",
      "type": "streamable-http"
    },
    {
      "url": "https://mcp.mermaidchart.com/sse",
      "type": "sse"
    }
  ],
  "version": "1.0.0",
  "repository": {
    "url": "https://github.com/Mermaid-Chart/mermaid-mcp",
    "source": "github"
  },
  "description": "MCP server for Mermaid diagram validation and rendering"
}