Bring Feature Flags
to CrewAI
Learn how to connect Flagsmith to CrewAI 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 SubscribersCompatible with every major AI agent and IDE
Gemini
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)
Requires FLAGSMITH_API_KEY. Create a new environment within a project
Requires FLAGSMITH_API_KEY. Delete a segment override
Requires FLAGSMITH_ENVIRONMENT_KEY. Get the entire environment configuration document
Requires FLAGSMITH_ENVIRONMENT_KEY. Get all default flag states for an environment
Requires FLAGSMITH_ENVIRONMENT_KEY. Get flags and traits for a specific user identity
Requires FLAGSMITH_ENVIRONMENT_KEY. Identify user and set traits
Requires FLAGSMITH_API_KEY. Update a flag value (Single change)
Requires FLAGSMITH_API_KEY. Update flags (Batch change)
Why CrewAI?
When paired with CrewAI, Flagsmith becomes a first-class tool in your multi-agent workflows. Each agent in the crew can call Flagsmith tools autonomously, one agent queries data, another analyzes results, a third compiles reports, all orchestrated through Vinkius with zero configuration overhead.
- —
Multi-agent collaboration lets you decompose complex workflows into specialized roles, one agent researches, another analyzes, a third generates reports, each with access to MCP tools
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CrewAI's native MCP integration requires zero adapter code: pass Vinkius Edge URL directly in the
mcpsparameter and agents auto-discover every available tool at runtime - —
Built-in task delegation and shared memory mean agents can pass context between steps without manual state management, enabling multi-hop reasoning across tool calls
- —
Sequential and hierarchical crew patterns map naturally to real-world workflows: enumerate subdomains → analyze DNS history → check WHOIS records → compile findings into actionable reports
Flagsmith in CrewAI
Flagsmith and 4,000+ other MCP servers. One platform. One governance layer.
Teams that connect Flagsmith to CrewAI 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 Flagsmith in CrewAI
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 CrewAI 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
Flagsmith for CrewAI
Every tool call from CrewAI to the Flagsmith MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
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 CrewAI discover and connect to MCP tools?
CrewAI connects to MCP servers lazily. when the crew starts, each agent resolves its MCP URLs and fetches the tool catalog via the standard tools/list method. This means tools are always fresh and reflect the server's current capabilities. No tool schemas need to be hardcoded.
Can different agents in the same crew use different MCP servers?
Yes. Each agent has its own mcps list, so you can assign specific servers to specific roles. For example, a reconnaissance agent might use a domain intelligence server while an analysis agent uses a vulnerability database server.
What happens when an MCP tool call fails during a crew run?
CrewAI wraps tool failures as context for the agent. The LLM receives the error message and can decide to retry with different parameters, fall back to a different tool, or mark the task as partially complete. This resilience is critical for production workflows.
Can CrewAI agents call multiple MCP tools in parallel?
CrewAI agents execute tool calls sequentially within a single reasoning step. However, you can run multiple agents in parallel using process=Process.parallel, each calling different MCP tools concurrently. This is ideal for workflows where separate data sources need to be queried simultaneously.
Can I run CrewAI crews on a schedule (cron)?
Yes. CrewAI crews are standard Python scripts, so you can invoke them via cron, Airflow, Celery, or any task scheduler. The crew.kickoff() method runs synchronously by default, making it straightforward to integrate into existing pipelines.
MCP tools not discovered
Ensure the Edge URL is correct. CrewAI connects lazily when the crew starts. check console output.
Agent not using tools
Make the task description specific. Instead of "do something", say "Use the available tools to list contacts".
Timeout errors
CrewAI has a 10s connection timeout by default. Ensure your network can reach the Edge URL.
Rate limiting or 429 errors
Vinkius enforces per-token rate limits. Check your subscription tier and request quota in the dashboard. Upgrade if you need higher throughput.
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