Control every agent tool call from one policy layer.
Define what your agents can do. Block what they cannot. Enforced at every tool call, before it executes.
Live Runtime Stream
policy.log
...
import megent as mg
mg.configure(policy_path="megent.yaml")
@mg.guard
def send_email(to: str, body: str) -> str:
return "sent"
send_email("ops@example.com", "+1 555 111 2222")
Google ADK
Langchain
AutoGen
LlamaIndex
CrewAI
Google ADK
Langchain
AutoGen
LlamaIndex
CrewAIYou're shipping AI agents into production.
Do you know what they're doing?
Most teams don't. That's fine - until a hallucination triggers a fund transfer, a vendor agent accesses a database it shouldn't, or a customer's SSN lands in a log file.

Runtime Snapshot
See risky behavior before it ships
Route actions through a policy layer so every important tool call is visible, evaluated, and traceable in one place.
No visibility into what your agents actually do
Your agent runs, returns an answer, and you ship it. But between the LLM call and the result, tool calls happened. Files were read. APIs were hit. Data moved. You have no record of any of it.
Observability gapYou installed a vendor agent you didn't write
It works. You deployed it. But you have no idea what it does under the hood. When it starts making unexpected tool calls, you'll find out the hard way - after the incident, not before.
Supply chain riskOne unmasked field ends your compliance story
Fintech. Healthcare. Legal. Your agents process sensitive data. Your compliance framework says it can't appear in logs or agent context. Your agents don't know that. Megent does.
Regulatory exposureBuilt for how agents actually run in production.
View full docsTool call interception
Every tool call your agent makes is caught before it executes. Checked against policy. ALLOW, STOP_TOOL, or HUMAN_IN_THE_LOOP decisions return in under a millisecond.
Agent JWT passports
Each agent carries a signed JWT passport with a trust level baked in. The runtime verifies it on every call. No valid identity means no tool access - no exceptions.
Sensitive-data detection and rectification
When an agent calls data and then runs search, Megent detects sensitive fields, rectifies risky values first, and allows only policy-compliant search/query to continue.
Third-party agent coverage
Wrap any agent you didn't write - vendor plugins, marketplace agents, open-source bots - and enforce your rules regardless of what's inside the black box.
Budget limiting policy
Set spend caps by agent, workflow, or day. When a limit is reached, Megent pauses non-critical tools and keeps your core flow under control.
Stop tool, not whole agent
When policy blocks an action, Megent can stop only that risky tool call instead of breaking the whole agent run, so your workflow degrades gracefully.
Three steps to runtime safety
Click a step to preview exactly what your team would configure.
Write your policy
Add one small policy file with the tools and rules you allow.
Policy Marketplace
Discover predefined and community-authored policy packs, all versioned and ready for production workflows.
Pick your workflow
Choose a case to preview the default guard behavior.
Fintech
Mask card data and block risky transfers by default.
Waitlist for
international payment support
We’re building international payment support for Megent. Join the waitlist to get early access when it launches.