Mastra AISDK

Flagsmith MCP Server

Bring Feature Flags
to Mastra AI

Name: Flagsmith MCP Server
Price: 29 USD
Availability: InStock
Rating: 0.2 (1 reviews)
Author: Vinkius

Learn how to connect Flagsmith to Mastra AI and start using 8 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.

GDPR Free for Subscribers

Create EnvironmentDelete Segment OverrideGet Environment DocumentGet Environment FlagsGet Identity FlagsIdentify UserUpdate Flag V1Update Flag V2

Unlock for AI Agents

Ask AI about this MCP Server ChatGPT Claude Perplexity

Compatible with every major AI agent and IDE

Claude

ChatGPT

Cursor

Gemini

Windsurf

VS Code

JetBrains

Vercel

+ other MCP clients

What is the Flagsmith MCP Server?

Connect your Flagsmith account to any AI agent to control feature releases and remote configurations through natural conversation.

What you can do

Flag Management — Retrieve default flag states and remote configuration values for any environment instantly.
Identity Control — Fetch specific flags and traits for user identities or identify new users with custom traits to test personalized experiences.
Environment Admin — Create new environments within projects and fetch full configuration documents for local evaluation modes.
Dynamic Updates — Update flag values (single or batch) and manage segment overrides using the Admin API for rapid iteration.
Local Evaluation — Access the entire environment configuration document for high-performance SDK integrations.

How it works

Subscribe to this server
Enter your Flagsmith Environment Key or Admin API Key
Start managing your feature lifecycle from Claude, Cursor, or any MCP-compatible client

Who is this for?

Developers — check flag states and user traits directly from the code editor to debug feature logic without switching contexts.
Product Managers — toggle features, manage rollouts, and update remote configs without touching the dashboard.
DevOps & SREs — automate environment creation and manage segment overrides through simple natural language commands.

Built-in capabilities (8)

create_environment

Requires FLAGSMITH_API_KEY. Create a new environment within a project

delete_segment_override

Requires FLAGSMITH_API_KEY. Delete a segment override

get_environment_document

Requires FLAGSMITH_ENVIRONMENT_KEY. Get the entire environment configuration document

get_environment_flags

Requires FLAGSMITH_ENVIRONMENT_KEY. Get all default flag states for an environment

get_identity_flags

Requires FLAGSMITH_ENVIRONMENT_KEY. Get flags and traits for a specific user identity

identify_user

Requires FLAGSMITH_ENVIRONMENT_KEY. Identify user and set traits

update_flag_v1

Requires FLAGSMITH_API_KEY. Update a flag value (Single change)

update_flag_v2

Requires FLAGSMITH_API_KEY. Update flags (Batch change)

Why Mastra AI?

Mastra's agent abstraction provides a clean separation between LLM logic and Flagsmith tool infrastructure. Connect 8 tools through Vinkius and use Mastra's built-in workflow engine to chain tool calls with conditional logic, retries, and parallel execution. deployable to any Node.js host in one command.

—
Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure. add Flagsmith without touching business code
—
Built-in workflow engine chains MCP tool calls with conditional logic, retries, and parallel execution for complex automation
—
TypeScript-native: full type inference for every Flagsmith tool response with IDE autocomplete and compile-time checks
—
One-command deployment to any Node.js host. Vercel, Railway, Fly.io, or your own infrastructure

See it in action

Flagsmith in Mastra AI

AI Agent→Vinkius

High Security·Kill Switch·Plug and Play

Why Vinkius

Flagsmith and 4,000+ other MCP servers. One platform. One governance layer.

Teams that connect Flagsmith to Mastra AI 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.

4,000+MCP Servers ready

<40msCold start

60%Token savings

	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

Unlock for AI Agents View step-by-step setup guide for Mastra AI →

Enterprise Security

Why teams choose Vinkius for Flagsmith in Mastra AI

The Flagsmith 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 8 tools execute in hardened sandboxes optimized for native MCP execution.

Your AI agents in Mastra AI 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.

Unlock for AI Agents View full Flagsmith details →

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* 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

The Vinkius Advantage

How Vinkius secures
Flagsmith for Mastra AI

Every tool call from Mastra AI to the Flagsmith MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.

< 40msCold start

Ed25519Signed audit chain

60%Token savings

FAQ

Frequently asked questions

Can I retrieve flags for a specific user identity?

Yes. Use the get_identity_flags tool by providing the user's identifier. The agent will return all flags and traits associated with that specific identity in the environment.

How do I update multiple feature flags at once?

You can use the update_flag_v2 tool for batch changes. Provide the environment key and a JSON payload containing the updates you wish to apply simultaneously.

Is it possible to create a new environment via the agent?

Yes, using the create_environment tool. You will need to provide a name for the environment and the target Project ID. This requires a valid Flagsmith Admin API Key.

How does Mastra AI connect to MCP servers?

Create an MCPClient with the server URL and pass it to your agent. Mastra discovers all tools and makes them available with full TypeScript types.

Can Mastra agents use tools from multiple servers?

Yes. Pass multiple MCP clients to the agent constructor. Mastra merges all tool schemas and the agent can call any tool from any server.

Does Mastra support workflow orchestration?

Yes. Mastra has a built-in workflow engine that lets you chain MCP tool calls with branching logic, error handling, and parallel execution.

createMCPClient not exported

Install: npm install @mastra/mcp

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