add-mcp-integration SKILL.md skillA
add-mcp-integration from vellum-ai/vellum-assistant is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add vellum-ai/vellum-assistant/add-mcp-integration@git:20260924.494829cPins git:20260924.494829c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- vellum-ai/vellum-assistant
- Path
.claude/skills/add-mcp-integration/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260924.494829c, committed Sep 24, 2026
- Size
- 11,284 bytes
- Repository stars
- 1,483
- License
- MIT
Add a vendor's remote MCP server to the bundled integrations catalog (plugins/mcp-catalog/<name>/ + plugins/marketplace.json) so users can connect it from the Integrations page. Covers vetting the server's OAuth support, the icon, the package files, the generators, the CI checks, and the PR. Use when asked to "add <vendor> MCP", "add <vendor> to integrations", or to check whether a vendor's MCP server is an easy addition.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Add an MCP Integration A catalog integration is a bundled local plugin whose only content is an `mcp.json` pointing at the vendor's remote server. The assistant ships it, the Integrations page lists it, and connecting it runs the MCP OAuth flow in `assistant/src/mcp/mcp-oauth-provider.ts`. Scope: remote MCP servers in `plugins/mcp-catalog/`. For a full plugin that lives in another GitHub repo, see `plugins/README.md` § Marketplace. Work in a worktree from `origin/main`. One provider per PR. ## 1. Research the server From the vendor's MCP docs, record: - The remote URL. Prefer `streamable-http` (docs often say `"type": "http"`). - The docs page URL. It is both `homepage` and `documentationUrl`. - A one-line summary of what the tools do. Reject a server that only runs locally (`npx`, `uvx`, Docker). The catalog ships no stdio servers. ## 2. Check OAuth support The catalog's one-step connect needs the server to support OAuth discovery and dynamic client registration (DCR), because a plugin cannot ship a client secret. ```bash URL=https://mcp.example.com/mcp curl -sS -i -X POST "$URL" -H 'content-type: application/json' \ …
Read the whole file at its exact version.
How to install
mdr add vellum-ai/vellum-assistant/add-mcp-integration@sha256:07544c74ea22edb8The line at the top of this page pins the label git:20260924.494829c, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_2n2ru46loyffzjop)
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Versions
The registry has recorded 1 version of this file, committed on Sep 24, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11284 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
vellum-ai/vellum-assistant · 1,483 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2n2ru46loyffzjop GET https://markdownregistry.com/api/v1/resolve?ref=vellum-ai/vellum-assistant/add-mcp-integration GET https://markdownregistry.com/api/v1/blob/07544c74ea22edb85628da57dc7937cf1445570c2129c02cb05ebede17e9174c
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.