Secrets & Key Management · Integration
HashiCorp Vault
Add HashiCorp Vault to your product for your customers, and give your AI agents governed access to it.
Embed a HashiCorp Vault integration so your customers can keep credentials in their own Vault rather than pasting them into your product. Every Vault has its own paths, policies, and auth methods, so path mapping is configuration per customer, permissions are scoped per tenant, and every call is recorded. fastn handles per-customer authentication, token renewal, and API upkeep.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let customers point your product at their own Vault so secrets stay under their control.
Read a secret at the path a customer maps, with access limited to that path.
Write or rotate a secret from your product when a credential changes.
Keep every read and write logged per tenant so a secret access traces back to the event behind it.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent retrieves a scoped credential it needs for a task, with the access recorded.
An agent triggers a rotation within governed permissions rather than holding a long-lived secret.
An agent checks which paths it is permitted to reach before attempting a read.
Example prompt
Read the database credential at the mapped path for this tenant and tell me when it was last rotated.
Set up HashiCorp Vault in 4 steps
- 01Open the HashiCorp Vault connector from your fastn dashboard.
- 02Have each customer authenticate their own Vault with a least-privilege auth method.
- 03Map only the paths your product may reach, then enable actions.
- 04Call them from your product, or expose them to an agent through the MCP server.
Why teams use the HashiCorp Vault integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a HashiCorp Vault integration without building it. Your customers connect their own HashiCorp Vault account inside your product and work their secrets, keys and certificates there, with no per-customer code on your side.
- Handle the part that actually costs time: an expired certificate or an unrotated key is an outage rather than a warning, and it arrives without notice. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a HashiCorp Vault update is not your on-call problem.
- One integration serves your product and your agents. The same governed HashiCorp Vault connection powers in-product features and gives AI agents scoped, audited access, so you fetch a credential at the point of use instead of storing it yourself without wiring it twice.
Used by these teams
Compare with
AWS Secrets Manager
CyberArk ConjurWorks well with
OktaOften used alongside
Tools the same teams tend to run next to HashiCorp Vault, across other categories.
ServiceNow
Datadog
PagerDutyHashiCorp Vault integration FAQ
How do I add a HashiCorp Vault integration to my product?
Enable the HashiCorp Vault connector in your fastn dashboard, then let each customer authenticate their own HashiCorp Vault account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no HashiCorp Vault client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own HashiCorp Vault account?
Yes. Every connection is scoped to the individual customer, so each authorises their own HashiCorp Vault account and only ever sees their own secrets, keys and certificates. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.
Can AI agents use this HashiCorp Vault integration?
Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent retrieves a scoped credential it needs for a task, with the access recorded.
Who maintains the HashiCorp Vault integration?
fastn does. When HashiCorp Vault changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.
Does my product ever hold the customer's HashiCorp Vault secret?
No longer than the call needs it. Values are fetched under the customer's own credentials at the point of use and never written into your database, and every read is logged per tenant so an access can be traced to what asked for it.
Can rotation and expiry be handled automatically?
Yes, within the permissions the customer grants, and audited. This matters more here than almost anywhere else: an expired certificate or an unrotated key takes something down rather than raising a warning first.
What can I build with the HashiCorp Vault integration?
A common starting point: point your product at their own Vault so secrets stay under their control. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.
How much does the HashiCorp Vault integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding HashiCorp Vault does not change your per-connector cost. You can start free with 3 connected accounts.
Add HashiCorp Vault to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.