KnoxCall vs AWS API Gateway
These solve opposite halves of the API problem. AWS API Gateway is an ingress gateway — it fronts your own APIs so clients can call in. KnoxCall is an egress and credential gateway — it fronts the third-party APIs your code calls out to, and wire-injects the real Stripe or OpenAI key at the last hop so the plaintext key never enters your Lambda, app, or CI. You can even import from AWS Secrets Manager + SSM and front-proxy the keys you already have.
KnoxCall Advantages
- Egress wire injection — the real vendor key is added at the last hop; plaintext never enters your Lambda, app, or CI
- Custodial rotation — mints/rotates the underlying provider child key, not just a lease TTL
- WIF/OIDC + DPoP-bound short-lived tokens in place of static vendor bearer tokens (counters IAM-auth on the outbound side)
- Tokenization vaults + Encryption-as-a-Service + AI Gateway, all in one bill
- Import from AWS Secrets Manager + SSM (via STS) and front-proxy them
- Built-in analytics, geo, and alerts — no CloudWatch/Athena assembly
AWS API Gateway Advantages
- Best-in-class ingress for your own APIs (different job from KnoxCall)
- Native AWS Lambda integration
- WebSocket API support
- HTTP/2 and AWS WAF integration
- Scales automatically within AWS; AWS IAM request auth
- Deep AWS-native billing, IAM, and VPC integration if you are all-in on AWS
Feature Comparison
Credential Handling — Egress
AWS API Gateway secures traffic into your APIs; it does not touch the outbound vendor keys your code uses to call Stripe, OpenAI, Twilio, or SendGrid. That is the layer KnoxCall owns. Scope note: wire injection covers the third-party outbound bearer key on the proxy hot path — a short-lived, scoped, revocable KnoxCall token still lives in the workload.
| Feature | KnoxCall | AWS APIGW |
|---|---|---|
Egress wire injection Real vendor key added at the last hop; no value-GET path in the proxy, so plaintext never enters your Lambda/app/CI | ✓ | ✗
Ingress only; outbound keys live in your code |
Custodial key rotation Mints/verifies/deletes provider child keys, so it rotates the underlying VENDOR key, not just a lease TTL | ✓ | ✗ |
WIF / OIDC + DPoP-bound tokens RFC 8693 workload identity federation + DPoP short-lived tokens replace static vendor bearer tokens | ✓ | ~
IAM auth for AWS ingress; no outbound token exchange for third-party keys |
Import from AWS SM + SSM (via STS) Read existing secrets and front-proxy them (import + front-proxy only — not two-way sync) | ✓ | n/a |
SSRF / DNS-rebinding defence Egress hot path guards against SSRF and DNS-rebinding on outbound targets | ✓ | ✗
Not an egress concern for APIGW |
Tokenization, Crypto & AI
| Feature | KnoxCall | AWS APIGW |
|---|---|---|
Tokenization Vaults Format-preserving tokens for PAN, SSN, email | ✓ | ✗ |
Ephemeral Proxy One-shot detokenize-and-forward without exposing data | ✓ | ✗ |
Encryption-as-a-Service Encrypt/decrypt/rewrap + JWT/RSA/ECDSA/Ed25519 signing with alg-confusion defence | ✓ | ✗
Needs KMS + custom code |
BYOK (tenant master key) Bring your own KMS key (Enterprise) | ✓
Enterprise plan | ~
Via AWS KMS, separate service |
AI Gateway LLM egress proxy: capability keys, streaming PII redaction (FF3-1, hold-back FSM, Pro+), prompt firewall + canary; provider key never enters the workload | ✓ | ✗ |
API Proxying
| Feature | KnoxCall | AWS APIGW |
|---|---|---|
HTTP Proxying Forward requests to backends | ✓ | ✓ |
Request Transformation Modify headers and bodies | ✓ | ~
VTL templates or Lambda |
Rate Limiting Throttle request rates | ✓ | ✓ |
IP Restrictions Allow/block by IP | ✓ | ~
Via resource policies |
Multi-environment Dev, staging, prod configs | ✓ | ✓
Via stages |
Secrets & Authentication
| Feature | KnoxCall | AWS APIGW |
|---|---|---|
Built-in Secrets Store credentials in-platform | ✓ | ✗
Need Secrets Manager |
OAuth2 Token Management Automatic token refresh | ✓ | ✗
Custom Lambda required |
Secret Injection Add credentials to requests | ✓ | ✗
Lambda + Secrets Manager |
mTLS Support Client certificates | ✓ | ✓ |
Pricing Model
| Feature | KnoxCall | AWS APIGW |
|---|---|---|
Pricing Structure How you pay | Flat monthly | Per-request |
Cost Predictability Know your bill in advance | ✓ | ✗
Varies with traffic |
1M Requests Cost Approximate monthly cost | $99 (Pro plan) | $3.50+ (+ Lambda + SM) |
Additional Services Extra services needed | None | Lambda, Secrets Manager, CloudWatch |
Monitoring & Operations
| Feature | KnoxCall | AWS APIGW |
|---|---|---|
Built-in Analytics Request metrics dashboard | ✓ | ~
Basic, needs CloudWatch |
Real-time Geo Tracking Visualize request origins | ✓ | ~
Requires CloudWatch/WAF + Athena/QuickSight |
Custom Alerts Email, SMS, Slack | ✓ | ~
Via CloudWatch Alarms |
Request Logging Full request/response logs | ✓ | ~
Extra setup + costs |
In Depth
The most important thing to understand is that KnoxCall and AWS API Gateway sit on opposite sides of your service. API Gateway is an ingress gateway: it terminates traffic coming into the APIs you publish — auth, throttling, WAF, routing to Lambda or a VPC backend. KnoxCall is an egress and credential gateway: it fronts the third-party APIs your code calls out to, and it owns the vendor credentials for those calls. If you run public APIs on AWS, keep API Gateway. This page is about the outbound half it was never designed to cover.
Where the outbound key lives
With API Gateway, the Stripe or OpenAI key your Lambda uses to call out still has to live somewhere your Lambda can read it — typically Secrets Manager or SSM Parameter Store, pulled into the function’s environment or memory at runtime. Once it is there, an RCE, a poisoned dependency, a core dump, or a prompt-injected agent running printenv can read it. KnoxCall’s structural move is to take that plaintext handoff off your machine: the real vendor key is injected at the egress wire, and there is no value-GET path in the proxy, so the plaintext key never enters your Lambda, app, or CI. Their job ends where your incident begins; this is the part that begins after.
Import from AWS SM + SSM — front-proxy, not sync
You do not have to rip anything out. KnoxCall can read your existing secrets from AWS Secrets Manager and SSM Parameter Store (via an STS role you grant) and put a wire-injecting proxy in front of them, consumer by consumer. This is import and front-proxy only — a one-directional read to bootstrap; KnoxCall does not write back to AWS and there is no two-way sync. It is the highest-leverage lever for an AWS-heavy team: keep your source of record, stop rendering the plaintext into workloads.
The hidden cost of assembling AWS services
API Gateway alone doesn’t handle outbound credentials, tokenization, crypto, or useful analytics—you assemble Secrets Manager (per-secret + API calls), Lambda for transforms, KMS for encryption, and CloudWatch/Athena/QuickSight for monitoring and geo. KnoxCall provides the egress-side pieces in one integrated platform with one bill.
When to Choose AWS API Gateway
If your primary need is a managed front door for your own APIs—WebSocket support, tight Lambda and VPC integration, AWS WAF, IAM request authorization, and AWS-native billing—API Gateway is excellent and KnoxCall does not replace it. Teams that are all-in on AWS and want their ingress, IAM, and networking to live in one account will be better served keeping API Gateway for that layer. The two are complementary: API Gateway for who calls you, KnoxCall for how you call everyone else.
Pricing Comparison
KnoxCall
- 1 Route · 100 calls/mo
- 1 Secret · 1 Client
- 1 Vault (1k tokens)
- Basic Analytics · 7-day logs
- 2 Routes · 10K calls/mo
- 5 Vaults (50K tokens)
- Ephemeral Proxy 100K ops/mo
- Basic Analytics
- 25 Routes · 1M calls/mo
- Email Alerts
- 25 Vaults (1M tokens) + FPE tokens
- Streaming PII Redaction + AI Gateway
- OIDC workload federation
- Unlimited Routes · Unlimited calls
- All Pro features
- BYOK + Dedicated Fixed Outbound IP
- Priority Support
AWS API Gateway
- First 333M requests
- Plus data transfer
- Plus cache if used
- First 300M requests
- Fewer features
- No caching
- API GW + Lambda
- + Secrets Manager
- + CloudWatch / Athena
- + Data transfer
Per-request pricing looks cheap, but a working stack adds Lambda execution, Secrets Manager, CloudWatch/Athena, and data transfer. The figures above are illustrative per-unit AWS list prices, not a quote — your bill depends on traffic, log volume, and which services you assemble. And none of it covers the outbound credential layer KnoxCall does.
Frequently asked questions
Is KnoxCall a replacement for AWS API Gateway?
No. The two sit on opposite sides of your service: AWS API Gateway is an ingress gateway that fronts the APIs you publish, while KnoxCall is an egress and credential gateway that fronts the third-party APIs your code calls out to. If you run public APIs on AWS, you keep API Gateway and add KnoxCall for the outbound half it was never designed to cover.
Can I run KnoxCall alongside AWS API Gateway?
Yes, the two are complementary: API Gateway handles who calls you, KnoxCall handles how you call everyone else. KnoxCall can read your existing secrets from AWS Secrets Manager and SSM Parameter Store via an STS role you grant, then front-proxy them consumer by consumer with no rip-and-replace. This is a one-directional import to bootstrap; KnoxCall does not write back to AWS and there is no two-way sync.
When is AWS API Gateway the better choice?
When your primary need is a managed front door for your own APIs. API Gateway offers WebSocket API support, native Lambda and VPC integration, AWS WAF, IAM request authorization, and automatic scaling within AWS. Teams that are all-in on AWS and want their ingress, IAM, and networking to live in one account are better served keeping API Gateway for that layer.
How does KnoxCall pricing differ from AWS API Gateway pricing?
KnoxCall uses flat monthly plans: a free tier, Starter at $19/mo, Pro at $99/mo with 1M calls included, and custom Enterprise pricing. AWS API Gateway bills per request, at $3.50 per million for REST APIs or $1.00 per million for HTTP APIs, plus data transfer, and a working stack typically adds Lambda, Secrets Manager, and CloudWatch or Athena costs. That makes the KnoxCall bill predictable in advance, while the AWS total varies with traffic and which services you assemble.
Keep API Gateway. Take the vendor key out of your Lambda.
KnoxCall runs on the egress side of your stack. Import from Secrets Manager + SSM and wire-inject your outbound keys so they never render into a function again — consumer by consumer, no rip-and-replace.