Compatible with every major AI agent and IDE
What is the Fastn MCP Server?
Connect your Fastn account to any AI agent to orchestrate complex backend workflows and real-time API flows through natural language.
What you can do
- Flow Execution — Trigger Fastn flows instantly with custom JSON payloads and receive real-time responses via the API sync layer.
- Workflow Management — List, create, update, and publish flow definitions across different tenants to maintain your business logic.
- Execution Monitoring — Track execution history and drill down into step-by-step traces to debug or audit automated processes.
- Credential Handling — Securely store, retrieve, and rotate credentials for your various connectors and third-party integrations.
- Platform Insights — Monitor your platform usage, including daily quotas, summary metrics, and active space configurations.
How it works
- Subscribe to this server
- Provide your Fastn API Key and Space ID
- Start executing and managing your backend logic from Claude, Cursor, or any MCP-compatible client
Who is this for?
- Developers — deploy, test, and trigger flows without leaving your code editor or terminal.
- DevOps Engineers — monitor execution traces and manage environment credentials programmatically through the agent.
- Product Teams — trigger business logic flows and check automation statuses via natural conversation.
Built-in capabilities (16)
Deactivate / archive a flow
Cancel a running execution
Create a new flow definition
The input object must match the Request Schema defined in the flow trigger. Execute a Fastn flow instantly (API Real-Time Sync)
Retrieve stored credentials
Get full step-by-step execution trace
Daily usage breakdown
Usage summary
Current usage against plan limits
Get a flow full specification
List execution history for a tenant
List all flow definitions for a tenant
Deploy / publish a flow
Rotate credentials
Store connector credentials
Update a flow definition
Why VS Code Copilot?
GitHub Copilot Agent mode brings Fastn data directly into your VS Code workflow. With a project-scoped config, the entire team shares access to 16 tools. Copilot queries live data, generates typed code, and writes tests from actual API responses, all without leaving the editor.
- —
VS Code is used by over 70% of developers. adding MCP tools to Copilot means your team can leverage external data without leaving their primary editor
- —
Project-scoped MCP configs (
.vscode/mcp.json) let you commit server configurations to your repository, ensuring the entire team shares the same tool access - —
Copilot's Agent mode integrates MCP tools seamlessly with file editing, terminal commands, and workspace search in a single agentic loop
- —
GitHub's enterprise compliance and audit features extend to MCP tool usage, providing visibility into how AI interacts with external services
Fastn in VS Code Copilot
Fastn and 4,000+ other MCP servers. One platform. One governance layer.
Teams that connect Fastn to VS Code Copilot through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 4,000+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for Fastn in VS Code Copilot
The Fastn MCP Server runs on Vinkius-managed infrastructure inside AWS — a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts. All 16 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in VS Code Copilot only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
How Vinkius secures
Fastn for VS Code Copilot
Every tool call from VS Code Copilot to the Fastn MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
Can I trigger a flow and get the result immediately?
Yes. Use the execute_flow tool with the flow name and input data. It performs a real-time sync execution and returns the response directly to the agent.
How can I debug a failed flow execution?
You can use list_executions to find the ID of the failed run, then use get_execution to retrieve a full step-by-step trace of what happened during that specific execution.
Is it possible to update an existing workflow definition?
Absolutely. The update_workflow tool allows you to modify the JSON definition of any flow. Remember to use publish_workflow afterwards to deploy your changes to the live environment.
Which VS Code version supports MCP?
MCP support requires VS Code 1.99 or later with the GitHub Copilot extension. Ensure both are updated to the latest version. Older versions of Copilot may not expose the Agent mode toggle.
How do I switch to Agent mode?
Open the Copilot Chat panel and look for two mode options: "Ask" and "Agent". Click "Agent" to enable autonomous tool calling. In Ask mode, Copilot provides conversational answers but cannot invoke MCP tools.
Can I restrict which MCP tools Copilot can access?
Yes. VS Code shows a tool consent dialog before any MCP tool is invoked for the first time. You can also configure tool access policies at the organization level through GitHub Copilot settings.
Does MCP work in VS Code Remote or Codespaces?
Yes. MCP servers configured via .vscode/mcp.json work in Remote SSH, WSL, and GitHub Codespaces environments. The MCP connection is established from the remote host, so ensure the server URL is accessible from that environment.
MCP tools not available
Ensure you are in Agent mode in Copilot Chat. MCP tools only appear in Agent mode.
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