Practical breakdowns of AI coding agents, context compaction, and autonomous workflows, explained against systems that were built, run, inspected, or broken.
Deconstructing transformer weight distributions, inference kernels, and why anthropomorphic mental models lead to brittle system prompts.
A practical reliability model for multi-step agent trajectories built around governed steps, deterministic state validation, and runtime escalation gates.
How to design isolated execution sandboxes and policy validation gates for Model Context Protocol servers in autonomous workflows.
Deterministic runtime contract around stochastic model execution. Sits between the operator and model providers to provide policy checks, replay, and audit logs.
1# DAX Rust Crates23DAX uses Rust only for deterministic proof surfaces around stochastic model execution.45| Crate | Purpose |6| ----- | ------- |7| `dax-core` | Replays canonical run events to reconstruct run state; generates deterministic proof reports |8| `dax-policy` | Evaluates proposed actions against policy context into `allow / ask / deny` decisions |9| `dax-audit` | Evaluates trust posture from six structured run signals |10| `dax-ledger` | Builds and verifies tamper-evident append-only ledger chains |11| `dax-indexer` | Builds deterministic local repo structure indexes for context selection |1213TypeScript orchestrates. Rust decides deterministic facts.The control layer around coding agents. The agents generate; Verb owns the environment they run in, the record of what actually happened, and the way back when something breaks.
1* **Sessions that survive process death.** A session keeps its identity across an agent exiting, the2 app being force-stopped, and the machine losing the process entirely - then resumes by the agent's3 *own* conversation id. Proven end to end on a physical Android device for Claude and Codex.4* **Two hosts, one contract.** Android (proot + PTY) and desktop (native Unix PTY) implement the same5 session semantics and the same durable record shape.6* **Structural memory, not surveillance.** Durable records hold identity, context and state. Never a7 PID, process handle, command text, terminal bytes, prompts, transcripts or credentials.8* **One session lifecycle, three recovery-capable agents.** `LIVE -> INTERRUPTED -> RECOVERABLE ->9 ENDED` is implemented for Claude Code, Codex CLI and OpenCode.Local-first developer control plane designed to govern, inspect, and explore workspaces using the Model Context Protocol (MCP).
1## System Diagram2[Portal UI (Browser)]3 │ (Fetch API + SSE / Bearer token auth)4 ▼5[Express Backend Server (Port 4000)]6 │7 ├─► [Host Policy Engine (myai-policy.json)] (Authoritative check)8 ├─► [Workspace Catalog (myai-workspaces.json)] (State check)9 ├─► [Append-only Logger (server/audit.log)]10 │11 ▼ (stdio spawn / tsx server/mcpWorkspaceServer.ts)12[Workspace stdio MCP Process] (Bound to selected workspace directory)Detect secrets by shape and entropy rather than simple key name matches. Redact credentials directly in memory.
Catch DELETE and UPDATE without WHERE clauses, DROP without IF EXISTS, and unsafe NOT NULL columns before deployment.
Catch the pull_request_target RCE combo, unpinned third-party actions, write-all token scopes, and script injection risks.
Map curl commands and HTTP traces into a clean endpoint surface, with auth tokens and sensitive headers redacted first.
Just as a healthy pothos vine flourishes only when yellowing leaves and overgrown stems are pruned, software systems stay resilient when teams deliberately prune away transient noise, ungrounded abstractions, and brittle prompt chains to nourish durable, verifiable primitives.
Agents break due to unchecked context compaction, silent hallucination drift, and lack of typed verification gates. Without deterministic state machines, AST validation, and fail-fast sandboxes, errors compound across long autonomous trajectories.
MCP standardizes tool invocation, file system boundaries, and resource state via JSON-RPC. It replaces proprietary API harnesses with modular, sandboxed capability servers that remain model-agnostic and auditable.
Each addresses a distinct failure mode rather than sharing a single execution contract. DAX uses pure Rust proof surfaces for deterministic policy and replay. PaneTera enforces a read-only workspace exploration boundary over MCP. Verb manages the terminal environment and session survival without recording command bytes or prompts.
Over 59 long-form architectural breakdowns, hands-on tool benchmarks, and design patterns for building durable production systems with LLMs and autonomous agents.