Engineering // Blog

Blog

Engineering deep dives on iddio's security architecture, implementation decisions, and the road ahead.

Architecture2026-07-21

Proxying SPDY Upgrades for Kubectl Exec

Why standard HTTP/2 breaks kubectl exec over a transparent TLS MITM proxy, and how we avoid it by staying on HTTP/1.1 and splicing the upgraded stream.

Architecture2026-07-20

Why We Chose JSONL Over SQLite for the Audit Log

Choosing best-effort append-only JSONL files over database rows for the Iddio audit log.

Architecture2026-07-15

Ditching Tokens: Why Iddio Uses Kernel Peer Credentials for Local IPC

How we replaced mTLS and bearer tokens with SO_PEERCRED and LOCAL_PEERCRED over Unix domain sockets for the local daemon-to-CLI IPC.

Architecture2026-06-26

The Invisible Front Door: Why We Choose Transparent TLS MITM Over Generic Proxies

Examining the architectural trade-offs of intercepting AI agent traffic, handling SPDY upgrades, and extracting intent from opaque protocols.

Architecture2026-06-25

Pragmatism Over Purity: Architecting Iddio Control Server v2.2

Why we chose Connect over raw gRPC, deferred OIDC device flows, and built a fail-closed policy engine for the new Control Server.

Architecture2026-06-15

Four-Tier Classification Over Binary Allow/Deny

Why traditional binary access control fails for AI agents, and how Iddio solves this with a four-tier risk classification model.

Architecture2026-06-07

One Vocabulary: Why Iddio Policy Uses Rule IDs Over a Custom DSL for GCP

How we avoided reinventing the wheel by using the classifier's generated method identities directly in our policy engine, instead of building a redundant resource matching DSL.

Architecture2026-06-04

The Case for Blocking HTTP Approvals

Why Iddio intentionally hangs HTTP connections while waiting for human approval instead of building an async negotiation protocol, and why simplicity often beats correctness in proxy design.

Architecture2026-06-04

Observe Mode: Safe Configuration for Selective MITM

How Iddio implements Observe Mode to record 'would-be' decisions and safely tune transparent proxy interception without disrupting developer tools.

Architecture2026-05-28

Selective MITM: Why Iddio Doesn't Intercept Everything

Why intercepting all local HTTPS traffic breaks cert-pinned apps and kills performance, and how Iddio solves this using a selective inspect list.

Audit2026-03-06

Kubernetes Audit Logging Is Not Enough

Kubernetes native audit logs record what hits the API server. Iddio records what left the workstation, what risk tier it falls into, and whether a human approved it. Here's why you run both.