Solution Secure APIs — specification‑driven design with gateways, authZ, and monitoring.
Direct Software Solutions Inc

Secure APIs

Design, govern, and run APIs with confidence. We deliver spec‑first development, gateway policy, zero‑trust authentication/authorization, and end‑to‑end observability.

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OpenAPI Kong OAuth2
API security diagram on screen

From Spec to Scale

Design‑First

OpenAPI/AsyncAPI contracts, mocking, and contract tests enable parallel delivery.

Zero‑Trust

mTLS, OAuth2/OIDC, fine‑grained authZ (ABAC/RBAC), and secrets hygiene.

Observable

Tracing, metrics, and structured auditing across gateway and services.

Capabilities

Need something custom?

API Lifecycle

Design (OpenAPI/AsyncAPI), review, versioning, deprecation, and portals.

Identity & Auth

OAuth2/OIDC, JWT/JWS, PATs, API keys rotation, device bindings, and mTLS.

Policy & Governance

Rate limits, quotas, schema validation, threat modeling, and WAF rules.

Gateways

Kong, Apigee, NGINX, and Envoy with plugin/policy catalogs and DevPortal.

Architecture

REST/GraphQL/gRPC, service mesh, event gateways, and idempotency patterns.

Observability

OpenTelemetry traces, RED/USE metrics, audit logging, and SIEM feeds.

Tech Stack

OpenAPI AsyncAPI Kong Apigee Envoy/NGINX OAuth2/OIDC mTLS OPA/ABAC OpenTelemetry Terraform GitHub Actions

Reference Architecture

  • Spec‑first: OpenAPI repo, linting, and mock servers
  • Gateway: policies for authN/Z, rate limits, and schema validation
  • Backends: REST/GraphQL/gRPC services with idempotency and retries
  • Security: mTLS, key rotation, secrets vault, WAF, and bot protection
  • Observability: traces, metrics, structured logs, and audit trails
  • DevPortal: catalogs, docs, examples, and consumer onboarding
  • Automation: CI/CD, contract tests, and Terraformed infra
Secure API architecture concept

Security & Compliance

OWASP & ASVS

Threat modeling, top‑10 mitigations, and ASVS level mapping for APIs.

Identity & Secrets

Rotations, short‑lived tokens, client credentials, JTI, and vaults.

Compliance

SOC2/ISO alignment, PII handling, data residency, and audit trails.

Runtime Protection

WAF, DDoS, anomaly detection, and rate‑limit circuit breakers.

Delivery Approach

1

Assess

API inventory, posture review, threat model, and target state roadmap.

2

Foundation

Gateway rollout, SSO/OAuth2, policies, and developer portal setup.

3

Enable

Spec‑first workflows, SDK generation, golden paths, and examples.

4

Operate

SLOs, dashboards, alerting, incident playbooks, and managed support.

Selected Work

See how this applies to your stack
API gateway

Unified API Gateway

Consolidated 40+ services under Kong with OAuth2 and mTLS.

Kong OIDC Terraform
Developer portal

Developer Portal & SDKs

Spec‑generated SDKs, quickstarts, and examples improved DX.

OpenAPI TypeScript Python
Security

Zero‑Trust Rollout

mTLS between services, rotated credentials, and least privilege policies.

mTLS OPA Envoy

FAQs

How do you secure legacy services?

Place a gateway/sidecar in front, enforce schema validation and authN/Z at the edge, and implement strangler patterns toward modern services.

What about multi‑tenant products?

We implement tenant‑aware policies (RLS/CLS), scoped tokens, and rate/quotas per tenant, with auditability per subject and tenant.

Do you support GraphQL and gRPC?

Yes. We apply schema‑first workflows, persisted queries, and protobuf contracts with gateway policy parity.

Ready to harden and scale your APIs?

Share your current stack and goals; we’ll propose a secure, observable design and rollout plan.

info@directsoftwaresolutions.com Download capability statement