Compared · Build AI apps
Best MCP servers for Build AI apps
5 entries in the AgentTask Atlas catalog fit build ai apps. They are not ranked by a score: the table lists active entries first, then by how many clients document a setup, and each row ends with our one-line verdict on when to pick it. Official sources last checked 2026-10-25.
- No credentials needed: none — every entry here needs some account, key or connection string.
- Offers a hosted/remote option: Resend MCP Server, Mapbox MCP Server, Hugging Face MCP Server
- Most documented clients: Claude Code (5), Claude Desktop (4), Cursor (4), Claude.ai (3), VS Code (3), Codex (2).
| Name | Type | Credentials | License | Clients | Verdict |
|---|---|---|---|---|---|
| Resend MCP Server Resend | MCP server | Required | MIT | 8 | Pick it to build and test transactional email flows (templates, domains, test sends) from your editor; use a restricted API key and a test domain, since sends go to real inboxes. |
| Mapbox MCP Server Mapbox | MCP server | Required | MIT | 7 | Pick it when you build location features (geocoding, routing, isochrones, maps) and want the agent to test real Mapbox calls; use a scoped token and watch API usage. |
| Hugging Face MCP Server Hugging Face | MCP server | Required | MIT | 6 | Pick it to find models, datasets, Spaces and docs on the Hub from your agent; keep write tools (repos, Jobs) off unless you need them, they act on your HF account. |
| Pinecone Developer MCP Server Pinecone | MCP server | Optional | Apache-2.0 | 5 | Pick it to prototype RAG and semantic search on Pinecone from your editor; use a key for a dev project only, since the agent can create indexes and upsert data. |
| claude-api Anthropic | Agent Skill | Required | not stated | 3 | Pick it when building an app on the Claude API; the code you ship needs ANTHROPIC_API_KEY. |
Install notes
- Resend MCP Server
- Connect to https://mcp.resend.com/mcp (Streamable HTTP, OAuth). Claude Code: `claude mcp add --transport http resend https://mcp.resend.com/mcp`, then `/mcp`. Codex: `codex mcp add resend --url https://mcp.resend.com/mcp`. Local: `npx -y resend-mcp` with RESEND_API_KEY. official docs ↗Credentials: Resend account via OAuth on the hosted server, or a Resend API key (Bearer header remotely, RESEND_API_KEY locally); sending needs a verified domain (optional default SENDER_EMAIL_ADDRESS). · Maintenance: Official repo resend/resend-mcp, release v2.27.1 on 2026-10-16 (npm resend-mcp 2.27.1); hosted at https://mcp.resend.com/mcp running the same open-source code
- Mapbox MCP Server
- Connect to https://mcp.mapbox.com/mcp (Streamable HTTP, OAuth). Claude Code: `claude mcp add --transport http mapbox-mcp-production https://mcp.mapbox.com/mcp`, then `/mcp`. Cursor: `{"mcpServers":{"mapbox-mcp":{"url":"https://mcp.mapbox.com/mcp"}}}`. Local: `npx -y @mapbox/mcp-server` with MAPBOX_ACCESS_TOKEN. official docs ↗Credentials: Mapbox account via OAuth on the hosted endpoint, or a Mapbox access token (Bearer header on the hosted server, MAPBOX_ACCESS_TOKEN for the local npm server). · Maintenance: Official repo mapbox/mcp-server, release v0.16.0 on 2026-10-15 (npm @mapbox/mcp-server 0.16.0); hosted at https://mcp.mapbox.com/mcp
- Hugging Face MCP Server
- Remote: connect to https://huggingface.co/mcp. Claude Code: `claude mcp add hf-mcp-server -t http https://huggingface.co/mcp?login` (or `-H "Authorization: Bearer <YOUR_HF_TOKEN>"`); then pick tools and Spaces at huggingface.co/settings/mcp. official docs ↗Credentials: Hugging Face account sign-in (OAuth via ?login) or a Hugging Face token in an Authorization: Bearer header. · Maintenance: Release v0.4.31 on 2026-10-19; last commit 2026-10-19
- Pinecone Developer MCP Server
- Local stdio server `npx -y @pinecone-database/mcp` with PINECONE_API_KEY in env. Claude Code: `claude mcp add-json pinecone-mcp '{"type":"stdio","command":"npx","args":["-y","@pinecone-database/mcp"],"env":{"PINECONE_API_KEY":"YOUR_API_KEY"}}'`; Cursor: same command in .cursor/mcp.json; Gemini CLI: `gemini extensions install https://github.com/pinecone-io/pinecone-mcp`. official docs ↗Credentials: Optional: works without a key for docs search only; a Pinecone API key (PINECONE_API_KEY) is needed to manage or query indexes. Node.js 20+ with npx. · Maintenance: Official repo pinecone-io/pinecone-mcp; release v0.3.0 on 2026-08-07 (npm @pinecone-database/mcp 0.3.0); last push 2026-10-22
- claude-api
- Claude Code: `/plugin marketplace add anthropics/skills`, then install the plugin that contains it. official docs ↗Credentials: ANTHROPIC_API_KEY for the code you build (per SKILL.md). · Maintenance: No GitHub release; last commit 2026-10-09 (path-scoped)
Set up any of these in your client: Claude Code · Cursor · VS Code · Claude Desktop. Filter interactively on the Build AI apps explorer, or ask the catalog from your agent with the free MCP server.
Other comparisons: Databases & SQL · Code review · Infra & deploy · Debugging & observability · Library docs & research · Web fetching & scraping · Frontend & UI · Local files · Docs & writing · Planning & reasoning · Utilities
⚠ No independent security audit: entries summarize official sources only. Review permissions and code before installing.