Autonomous Agents with Reliable Outcomes

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Nine Places to Use a Small Classifier Instead of a Full LLM

ByteByteGo·Sep 26, 2026

Covers TypeSafe AI's 'Jev' fast/cheap classifier model and nine use cases (routing, guardrails, tool-call gating, inbox triage, reranking, evals, bulk labeling, real-time decisions, confidence gating)…

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A Practical Taxonomy for Handling Errors in Production LLM/Agent Systems

ByteByteGo·Sep 7, 2026

Distinguishes technical failures from semantic failures (malformed output, hallucination, wrong tool call) unique to probabilistic systems; covers fallback chains, circuit breakers, and idempotency re…

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A Traceable 'Rejection Log' Pattern for Auditable Agent Decisions

AI Maker·Sep 1, 2026

A 5-layer YouTube research agent (tools, memory, context profiles, scoring rubric, gated operating modes) produces a 'rejection log' citing the exact line in the user's content-strategy file that disq…

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Grill-Me, Memento-Driven Development, and 'Leading Words' for Better Agent Output

The Pragmatic Engineer·Sep 17, 2026

Matt Pocock (creator of the 'grill-me' skill) shares concrete techniques: having the agent interview the user before starting work to front-load context, 'strategic vs. tactical programming' as the ne…

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Autonomous Bug-Fix Loops at Scale: Linear's 300+ Fixes, Anthropic's 388 PRs

The Pragmatic Engineer·Sep 3, 2026

Linear's Datadog/Sentry-triggered bug-autofix loop fixed 300+ bugs in 30 days; Anthropic's 'Claude maintains apps' Slack-based routine opened 388 PRs across repos with 180 merged (45% merge rate) via …

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Approval Gates for High-Stakes Agent Actions During an OpenClaw-to-Grok-Bot Migration

Lennys Newsletter·Sep 7, 2026

Claire Vo migrated ~7 OpenClaw agents to Grok Bot via a secrets-free 'brain transplant' export/import, preserving personality/context. Key pattern: approval gates (e.g. a refund agent needs human conf…

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Managing 10-15 Concurrent Devin Agent Threads Like Direct Reports

Lennys Newsletter·Aug 24, 2026

Solo founder Ryan Carson runs 10-15 Devin threads at once organized into P0/P1/P2/Bugs folders, treating each thread like a direct report (clear goal, right priority, no unnecessary hand-holding), plu…

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A Concrete 'Zones' Model for Running Coding Agents Safely in Legacy Codebases

Addy Osmani Elevate·Sep 14, 2026

Addy Osmani's field guide to brownfield agentic engineering: a green/yellow/red risk-zone map (a human draws it, never the agent), durable 'comprehension memo' research artifacts so agents don't repea…

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Formal Methods with Hillel Wayne: Could AI Finally Bring Formal Verification Into the Mainstream?

The Pragmatic Engineer·Jul 29, 2026

Podcast interview on why formal methods like TLA+ matter for reliable software, and whether AI makes formal verification practical at mainstream scale for the first time.

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Why an LLM's Memory Gets Expensive and How to Fix It

ByteByteGo·Aug 4, 2026

Covers how LLM agent memory (context/KV cache) drives up cost as conversations grow, and techniques to control it.

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GraphRAG: How AI Answers Questions Hidden Across Many Documents

ByteByteGo·Aug 19, 2026

Explains GraphRAG — using a knowledge graph rather than flat vector search — for answering questions whose answers are scattered across many documents rather than contained in one passage.

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How OpenAI Optimized AI Agents for Scale: Inference, API, and Harness Layers at 10M Users

Engineering Leadership Gregor·Jul 29, 2026

Companion piece to ByteByteGo's technical deep-dive, based on interviews with the same OpenAI engineers, covering model tiering, load balancing, WebSocket migration, prompt caching, and OpenAI's inter…

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How to Do Spec-Driven Development: Spike, Reference Implementation, Spec, Test Plan, Implementation Plan

Engineering Leadership Gregor·Jul 27, 2026

Larridin's CTO walks through a concrete 6-step spec-driven workflow for delegating complex work to AI reliably: spike unknowns first, promote the spike to a commented reference implementation, write a…

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How ChatGPT Optimizes Its Agent Loop: Persistent WebSockets, Deferred Tool Discovery, Code Mode

ByteByteGo·Jul 29, 2026

Deep technical walkthrough of OpenAI's harness/API/inference optimization stack for Codex and ChatGPT Work at ~10M users: persistent WebSockets replacing per-call HTTPS, stable prompt-prefix caching, …

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Best Practices for Building AI Agents That Work in Production: Context, Control Flow, State, Scope

ByteByteGo·Jul 22, 2026

ByteByteGo synthesizes the 'Twelve-Factor Agents' movement plus lessons from Anthropic, Cognition, and Intercom into four production-reliability practices, with real failure case studies (Cursor's fab…

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Practical Loop Engineering: Goals, Loops, and the Discipline of Not Delegating Your Judgment

Addy Osmani Elevate·Aug 14, 2026

Addy Osmani details Claude Code's four loop types (agentic, goal-based /goal, time-based /loop, proactive) with concrete syntax examples, verification-skill patterns, and a cautionary story about near…

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RAG vs Graph RAG vs Agentic RAG: Three Approaches to Connecting LLMs to Your Data

ByteByteGo·Jun 27, 2026

ByteByteGo compares three retrieval approaches for giving LLMs access to organizational data: standard RAG, Graph RAG (using knowledge graphs), and Agentic RAG (where agents decide what to retrieve). …

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AI Customer Support at Scale: Why a Tail of Cases Always Resists Automation

ByteByteGo·Jul 15, 2026

ByteByteGo examines enterprise AI customer support in the travel industry, specifically addressing why certain support cases always resist automation regardless of model quality. The piece exposes the…

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What Is an Agent Harness? A Definition and Build Guide for Wrapping AI in Production Infrastructure

Lennys Newsletter·Jul 13, 2026

This How I AI episode covers the concept of an 'agent harness' — the infrastructure layer that wraps an AI agent for production: retries, monitoring, logging, and state management. Alongside a GPT-5.6…

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How AI Agents Manage Memory: Architecture Patterns for Avoiding Context Forgetfulness

ByteByteGo·Jun 29, 2026

ByteByteGo explores how AI agents handle memory across long-running tasks — the architectural constraints that force the problem, the tradeoffs between in-context, external, and hybrid memory, and the…

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5 Learnings from Building Canva for AI Agents: Enterprise Product Lessons from Canva's GM

Engineering Leadership Gregor·Jun 29, 2026

Anwar Haneef, GM & Head of Ecosystem at Canva, shares five learnings from building Canva's platform specifically for AI agents — how agents consume APIs, what product decisions change when agents are …

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The Agent Loop: How AI Goes from Answering Questions to Doing Things — Structure and Scaffolding

ByteByteGo·Jul 8, 2026

ByteByteGo walks through the agent loop structure: how an agent decides what to do on each turn, what scaffolding holds it together, and critically — when and how an agent should stop. Focuses on the …

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Agentic Autonomy Levels: A Working Framework for Deciding How Much to Trust an Agent

Addy Osmani Elevate·Jul 3, 2026

Addy Osmani proposes a framework of autonomy levels for agentic engineering — essentially a spectrum from fully supervised to fully autonomous, with guidelines for when each level is appropriate. The …

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How Microsoft Ships AI Agents at Enterprise Scale: Patterns from the VP of Microsoft Core AI

ByteByteGo·Jul 13, 2026

ByteByteGo interviews Marco Casalaina, VP of Products for Microsoft Core AI, on what it actually takes to ship AI agents at enterprise scale. The piece covers the infrastructure, coordination, and rel…

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Loop Engineering Defined: Triggers, Cron Jobs, Agent Loops — and Whether It's a Real Trend

The Pragmatic Engineer·Jul 14, 2026

Pragmatic Engineer deepdive investigates 'loop engineering' — a term spreading through engineering circles. Gergely finds triggers, cron jobs, and agent loops at its core, notes the presence of 'AI sl…

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MCP vs A2A vs ACP: The Three Emerging Protocols for How AI Agents Communicate

ByteByteGo·Jul 18, 2026

ByteByteGo compares the three emerging agent communication protocols: MCP (Model Context Protocol, Anthropic), A2A (Agent-to-Agent, Google), and ACP (Agent Communication Protocol). The piece argues co…

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An Ex-Meta L8's Agentic Engineering Setup: Concrete Patterns from a Senior Practitioner

ByteByteGo·Jun 23, 2026

ByteByteGo shares an ex-Meta L8 engineer's (senior staff / principal level) personal agentic engineering setup — how they structure their work with AI agents to be productive and avoid common pitfalls…

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AI Found a 15-Year-Old Bug: Claude Mythos Case Study

Lennys Newsletter·Jun 22, 2026

The same How I AI roundup includes an episode on how Claude Mythos surfaced a bug that had been lurking in a codebase for 15 years — an illustration of AI's ability to do deep, non-obvious static anal…

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How to Write AI Agent Loops in Claude Code and Codex

Lennys Newsletter·Jun 22, 2026

Weekly How I AI roundup includes an episode on writing AI agent loops in Claude Code and Codex — practical guidance on structuring agentic workflows that actually complete tasks reliably.

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Codex Goals: A 6-Component Framework for Autonomous Agent Tasks

Lennys Newsletter·Jun 1, 2026

Claire Vo (ChatPRD) walks through Codex /goal in depth with real examples: a 5h45m autonomous run eliminating hundreds of Sentry errors, and a 4-hour job that cleaned 3,900 emails down to 68. The six-…

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OpenAI Codex Tech Lead: Spec → Prompt → 6 Right-Sized PRs → CI Over Local Tests

Engineering Leadership Gregor·Jun 4, 2026

Michael Bolin (OpenAI Codex tech lead) describes his personal AI-assisted engineering workflow: starts with a written spec, writes a prompt from the spec, Codex generates 6 PRs for a single large feat…

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CI/CD is Shifting from Speed to Risk — AI Agents as Ephemeral Environment Managers

The Pragmatic Engineer·Jun 17, 2026

Robert Erez argues AI is shifting CI/CD's primary design axis from 'how fast can we ship' to 'how do we manage risk.' Ephemeral environments are replacing static staging — each PR gets its own environ…

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Top 1% Engineering Teams with AI: Flatter Orgs, Higher Agency ICs, More Deploys, No More Bugs

Engineering Leadership Gregor·Jun 15, 2026

Data from Weave (10,000+ engineers). Top 1% AI-using engineering orgs: flatter organizational structure, higher agency ICs, deploy more frequently than average, and do NOT have more bugs despite highe…

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The Context Layer Problem: AI with Tool Access Still Fails Without Knowing What Matters

AI Maker Wyndo (starred)·May 28, 2026

Connecting AI to all your tools (Gmail, Calendar, Slack, Notion) solves the access problem but creates a new one — the AI can see everything but doesn't know what matters. The context layer is the sol…

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Portkey's Pattern: Move Context to Markdown Files in GitHub for Agent Access

Engineering Leadership Gregor·Jun 1, 2026

Portkey describes their internal engineering practice: all shared context lives in .md files in a GitHub repo rather than Confluence/Notion, making it accessible to agents across the team. They built …

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Loop Engineering: 5 Building Blocks and the Comprehension Debt Risk

Addy Osmani / Elevate·Jun 8, 2026

Addy Osmani describes 5 building blocks of agent loop engineering: automations, worktrees, skills, plugins/connectors, and sub-agents. Key warning: 'comprehension debt' — when engineers use agent loop…

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Salesforce: 90% of Enterprise Agent Work Happens After Go-Live

ByteByteGo·Jun 9, 2026

Based on 20,000 enterprise agent deployments, Salesforce found that 90% of the work in AI agents is post-launch: monitoring, correction, iteration. Key practices: start small and narrow scope, define …

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OpenAI's Data Agent: Reliability from 6 Layers of Context

ByteByteGo·Jun 3, 2026

OpenAI built its internal data agent on a 'vanilla' architecture — the secret was stacking 6 layers of context across 90,000 tables to give the agent sufficient grounding. Used Codex to migrate 10,000…

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"Fake Done" vs "Undefined Done": The /goal Primitive for Agent Finish Lines

Lenny's Newsletter / How I AI·Jun 4, 2026

The AI Maker piece frames the core failure modes of AI agents: "fake done" (agent claims completion without verifying) and "undefined done" (agent stops because it ran out of instructions, not because…

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