Built for outbound API credentials

Keep API credentials outside your application.

SecretProxy replaces live secrets with placeholders and injects the real value only at egress. Your code, CI, logs, and process memory never hold the credential, but your upstream APIs still receive a normal authenticated request.

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  • No SDK or sidecar
  • Rotate on the next request
  • Host-scoped placeholders
  • <1ms added latency
  • In-cluster deployment option
Edge policy engine
Versioned secrets
Target allowlists
0 live credentials in app memory
Request Path
// application code
fetch('https://secretproxy.io/api.stripe.com/v1/refunds', {
  method: 'POST',
  headers: {
    'Authorization': '{{STRIPE_PROD_KEY}}',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    amount: 4200,
    charge: 'ch_9f0fd4'
  })
})

// SecretProxy resolves the placeholder at egress
// Upstream receives the real bearer token

Runtime posture

0
secrets loaded into process memory
1
base URL change per integration
24/7
edge enforcement on every request
v12
active binding promoted instantly

Active bindings

api.stripe.com Authorization header / v12
Live
api.openai.com JSON body template / v4
Live
graph.microsoft.com Header inject / v8
Live
Step 1 App emits placeholder

No secret manager lookup inside application code.

Step 2 Policy checks target

Only registered hosts and allowed placeholders pass.

Step 3 Edge injects secret

Secret is decrypted and inserted outside your runtime.

Step 4 Upstream gets a normal request

No changes required from the third-party API.

Header injection
Body templating
Secret version rollback
Per-host policy scopes
Audit-friendly operations
No redeploy rotations
Platform

More product surface area. Less secret exposure.

SecretProxy is built for the production details buyers actually ask about: where the credential lives at runtime, how target scope is enforced, how rotation rolls forward and back, and how platform teams keep outbound access legible.

Control plane

Protect once, enforce on every outbound request.

Your application talks to SecretProxy once. From there, every request is evaluated against the registered target, the binding policy, and the active secret version before it ever leaves the edge.

Your service Placeholder only. No vault SDK in the hot path.
SecretProxy edge Resolve placeholder, inject credential, enforce target scope.
Third-party API Receives a normal authenticated request, unchanged on their side.
Rotation

Promote a new version with zero redeploys.

Update the secret value once and every service uses the new credential on the next request.

v10 Retained for rollback
Inactive
v11 Previous production binding
Standby
v12 Current active secret version
Live now
Scope

Lock placeholders to specific upstream hosts.

A placeholder bound to Stripe cannot be replayed against OpenAI or any other registered target.

api.stripe.com
api.openai.com
graph.microsoft.com
payments.internal-proxy
Audit

Keep a cleaner operational trail.

Rotation events, binding changes, and request posture become visible without spraying secrets into logs.

Binding promoted STRIPE_PROD_KEY moved from v11 to v12 for api.stripe.com
Target allowed api.anthropic.com added to outbound registry for tenant 1
Rejected request Unknown placeholder blocked before traffic left the edge
Operations

The pieces teams actually need in production.

SecretProxy is not just a masked token store. It is the runtime enforcement layer that sits between application code and the real credential material.

Header injection Use placeholders in auth headers without loading the real bearer token in memory.
Body templating Inject API keys into JSON payloads or templated request bodies when headers are not enough.
Target registry Unknown hosts never receive traffic, so credentials cannot be replayed against arbitrary endpoints.
Version pinning Bindings point to specific secret versions, enabling staged rollouts and clean rollback paths.
Edge delivery Credential injection happens close to your workload with sub-millisecond overhead targets.
Zero code rewrites If your app can already make an HTTP request, SecretProxy fits by changing the base URL.
Enterprise posture

Security leaders need proof that credential exposure actually moved.

SecretProxy gives platform and security teams a runtime control they can explain to a CISO: credentials stay outside application memory, outbound targets are registered explicitly, and rotation becomes an auditable infrastructure event instead of an opaque application behavior.

Move third-party credentials out of the software supply chain path.

When a service is compromised, the attacker should not automatically inherit every outbound API credential that service uses. SecretProxy changes that default by replacing live tokens with scoped placeholders and resolving the real secret only when traffic leaves the trusted boundary.

Runtime reduction Source code, CI, environment variables, and process memory no longer need the real credential.
Governed egress Every binding is pinned to a specific target host and a specific secret version.
Operational control Rotation, rollback, and policy changes become centralized actions instead of scattered redeploys.
Security

Reduce exfiltration paths

Remove long-lived credentials from app memory, crash dumps, debug tooling, and ad hoc scripts that grew around them.

Platform

Keep service changes small

Teams usually change the URL and placeholder string, not the language runtime, sidecar model, or app architecture.

Audit

Make rollout intent visible

Bindings are version-aware, so promotion and rollback are explicit events with cleaner operational context.

Delivery

Support mixed environments

Hosted edge for speed, or enterprise in-cluster delivery when regulated workloads need the final decrypt closer to home.

Hosted edge

Shared SaaS control plane

Fastest way to move credentials out of services while keeping onboarding lightweight for app teams and platform engineers.

  • Cloudflare edge delivery with minimal request-path overhead.
  • Good fit for external SaaS APIs, CI systems, and central platform-managed egress.
  • IP allowlisting and target registration keep traffic scoped.
Controlled enterprise egress

Dedicated operational controls

Use the same placeholder and binding model while layering in longer retention, architecture review, and stricter tenant controls.

  • Multi-tenant data isolation with target, binding, and IP controls per organization.
  • Useful for regulated teams that need a stronger review trail before broad rollout.
  • Lets security own policy without forcing every team onto a custom SDK.
In-cluster enterprise proxy

Keep the last-mile decrypt inside your boundary

The docs roadmap already points here: run an egress proxy in Kubernetes so services call an internal hostname and secrets are injected locally.

  • Best fit for production clusters with tighter jurisdiction or boundary requirements.
  • Secrets can stay decrypted only inside the cluster network path.
  • Preserves the same target-binding-placeholder workflow across hosted and private models.
Multi-tenant isolation root
Version-pinned bindings
Per-tenant IP allowlists
Target-scoped placeholders
Kubernetes / Lambda / VMs / Docker
Terraform-driven control plane roadmap
Workflow

Set the target, bind the placeholder, route the traffic.

The path is intentionally short. The control surface is intentionally rich. Teams get better runtime isolation without adding a new library to every service they own.

1 Register the upstream host Declare the external target you allow SecretProxy to reach.
2 Create the binding Map a placeholder to a specific secret version and injection mode.
3 Send placeholder traffic Point your service at the proxy URL and stop pulling credentials into memory.
4 Rotate safely Promote a new version without redeploying every consumer. 
// service code
fetch('https://secretproxy.io/api.stripe.com/v1/charges', {
  method: 'POST',
  headers: {
    'Authorization': '{{STRIPE_PROD_KEY}}'
  }
})

// binding
target: 'api.stripe.com'
placeholder: 'STRIPE_PROD_KEY'
injection: 'header'
header: 'Authorization: Bearer {{secret}}'

Swap live bearer tokens for placeholders.

The app sends a placeholder string. SecretProxy resolves the secret version and constructs the real authorization header only when the request is forwarded to the registered upstream host.

Eliminates secret reads in application code.
Keeps header formatting rules in the binding, not duplicated across services.
Blocks unknown placeholders before anything is sent upstream.
// service code
fetch('https://secretproxy.io/api.openai.com/v1/responses', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    api_key: '{{OPENAI_KEY}}',
    model: 'gpt-5.4',
    input: 'summarize audit trail'
  })
})

// binding
injection: 'body'
template: '{{secret}}'

Handle APIs that expect credentials in the request body.

Not every provider uses an auth header. SecretProxy can scan the safe request body, replace allowed placeholders, and reject unresolved tokens before the request leaves the edge.

Works for templated JSON bodies and structured payloads.
Prevents unresolved placeholders from leaking to providers.
Preserves the same service code across rotation events.
// dashboard action
PUT /api/secrets/12
{
  value: 'sk_live_7F...new'
}

// promote binding
binding: 'STRIPE_PROD_KEY'
from_version: 11
to_version: 12

// next request automatically uses v12

Promote a new version without touching every deployment.

Secret rotation becomes an operational change instead of an application rollout. Keep previous versions for rollback, promote the new one when ready, and let the next request pick it up.

No environment variable reload sequence.
No staggered redeploy across every dependent service.
Rollback stays explicit because bindings are version-aware.
Security model

Storage is not the same thing as runtime isolation.

Secret managers solve where credentials live at rest. SecretProxy solves whether your application ever needs to touch them at runtime. That difference is what changes the blast radius of a compromised service.

Capability .env / config Secret manager SDK SecretProxy
Credential stored securely at rest Usually no Yes Yes
Credential enters app memory Always Yes No
Rotate without redeploying consumers Rarely Depends on app logic Yes
Per-host policy enforcement No No Yes
Works with any HTTP client Yes SDK-specific Yes
Blast radius after app compromise Full credential exposure Credential still readable Secret stays outside runtime

Platform teams get one place to govern outbound credentials.

Register the hosts, bind the placeholders, promote new versions when needed, and keep service teams from rewriting the same secret retrieval logic over and over again.

Best fit when many services talk to many third-party APIs.

Security teams reduce exposure without slowing down shipping.

Secrets stop appearing in application memory, debug output, and configuration sprawl. The runtime posture changes even though developers keep writing ordinary HTTP requests.

Best fit when secret exfiltration is the real concern, not just secure storage.

Developers change the URL, not the architecture.

No agent, no sidecar, no new client SDK. If the service can already make a request, SecretProxy becomes another infrastructure layer instead of another library to learn.

Best fit when you want better security without adding more app code.
Pricing

Adopt the runtime model once. Expand it from pilots to regulated production.

SecretProxy should feel simple for developers and legible for enterprise buyers. The control model stays the same whether you are protecting one integration or formalizing outbound credential governance across teams.

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Free

For side projects, prototypes, and small integrations that need immediate runtime isolation.

$0 / forever
  • Up to 2 API targets
  • 5 secrets
  • 10,000 proxy requests per month
  • 1 team member
  • Community support
  • 7-day audit log retention
Get Started
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Pro

For teams with real production traffic, frequent rotations, and more than a handful of integrations.

$12 / target / month
  • Unlimited API targets
  • Unlimited secrets
  • Unlimited proxy requests
  • Up to 20 team members
  • IP whitelisting
  • Secret versioning and rollback
  • 30-day audit log retention
  • Priority email support
Start Free Trial

Enterprise

For organizations that need private deployment posture, longer audit windows, and an architecture that stands up to security review.

Custom  
  • Everything in Pro
  • Dedicated rollout and architecture review
  • In-cluster or private egress deployment options
  • Secrets decrypted inside your controlled boundary
  • SAML / SSO
  • Unlimited team members
  • Extended audit retention and export workflows
  • SLA, onboarding support, and change management
  • Roadmap collaboration for Terraform and private networking
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Launch

Bring the first workload. Use the docs to map the rollout.

Open dashboard Review enterprise docs