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Blog · Concepts

AI agent concepts, explained

Plain-English explainers for AI agent concepts: tool use, memory, orchestration, evaluation, safety, refusal policy, stopping conditions, and the rest of the agent stack. Written for non-researchers who need to make build vs buy calls.

14 min

AI Agent Handoff Patterns: 8 Contracts That Don't Drop Work

A handoff is the contract between two agents (or one agent and a human) that specifies what gets passed, when, and what happens if the receiver is unavailable. Eight patterns cover most production cases. LangGraph,…

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13 min

AI Agent Fallback and Retry: A 2026 Playbook for Idempotency, Backoff, and Model Cascades

Naive retries amplify outages; smart retries absorb them. The Google SRE book defines a retry budget so retries can't exceed a fixed fraction of normal load (Google SRE, ch. 22). For AI agents the same logic applies…

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9 min

AI Agent Unit Economics for Builders (2026)

Builders keep asking the same question: is this agent actually worth shipping? Most answers floating around treat AI agents like SaaS products with seat counts and CACs. They are not. An agent is a piece of software…

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9 min

AI Agent Marketplace Splits Compared (2026)

Most builders look at a marketplace headline split, 70/30, 80/20, 95/5, and stop reading. That's the expensive mistake. The percentage is the smallest variable in the equation. What matters is everything sitting…

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20 min

AI Agent Marketplace: The Complete 2026 Guide

Most teams don't need another tool to build an AI agent. They need an agent that already works. According to a 2025 McKinsey State of AI survey, 78% of enterprises now use generative AI in at least one business…

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7 min

AI Agent Pricing Explained: 4 Models in 2026

AI agent pricing pages are designed to look comparable when the models behind them are not. A flat-fee platform at one hundred dollars per month can be cheaper or more expensive than a usage-based platform at five…

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9 min

AI Agent Platforms with No Vendor Lock-in (2026)

"No vendor lock-in" is one of the most overused phrases on enterprise pricing pages. Every platform has some lock-in. The honest question is which lock-ins you can live with and which would be catastrophic if you had…

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7 min

AI Agent Platforms with the Best Integrations (2026)

The "most integrations" claim is the cheapest one a SaaS marketing page can make. Counting connectors does not tell you whether the platform can do real agent work inside each one. A platform with five hundred…

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8 min

AI Agent Update Cycles: Safe Change Management for Production Agents

Production AI agents need updates. Models improve. Prompts get tighter. Tools get added. The team finds a way to make the stopping rule clearer. The question is not "should we update" but "how do we update without…

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8 min

AI Agent State Management: Memory, Checkpoints, and Durability

The single hardest non-model problem in agent engineering is state. The model is stateless. Every other part of the system that gives it the illusion of continuity, of memory, of resumption, is your code. Get it…

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8 min

AI Agent Prompt Versioning: Storage, Promotion, Rollback

Code without version control is a hobby. Prompts without version control are a liability. The reason most agent prompts produce silent regressions in week six is not that the prompt got worse; it is that nobody can…

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9 min

AI Agent Prompt Engineering: 5 Parts of a Production Prompt

Prompt engineering for AI agents is not the same craft as prompt engineering for chatbots. A chatbot prompt shapes one response. An agent prompt shapes a loop: the model picks a tool, reads the result, decides…

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8 min

Multi-Agent Coordination Patterns: Supervisor, Peer, Market, Shared-State

The intuition that "more agents will do better than one agent" is wrong more often than it is right. Most production multi-agent systems exist because the work has genuine boundaries (different access controls,…

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8 min

AI Agent Integration Patterns: Webhook, OAuth, MCP, Polling, Queue

Most AI agent failures in production are not model failures. They are integration failures. A webhook arrives twice and the agent acts twice. An OAuth refresh fails silently and the agent runs unauthenticated. A…

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8 min

AI Agent Data Residency: EU, India, US Architecture Patterns

Data residency is one of the silent gating items for enterprise sales of AI agents. The product can be perfect, but if the prompts leave the EU, the deal dies. This guide is the architecture playbook for…

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8 min

AI Agent Audit Trails: A Logging Design Guide

An AI agent's audit trail is the difference between "the agent took an action" and "we know why the agent took that action." It is what enables incident response, compliance audits, and the kind of post-hoc analysis…

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11 min

AI Agent Security Best Practices: A 2026 Production Playbook

Most security guides written for large language models stop at the prompt boundary. They assume a single completion, no tools, no state, no autonomy. That model has not described production deployments for at least…

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9 min

AI Agent Monitoring and Observability: A 2026 Production Playbook

The first time I shipped an agent without proper observability I did not notice quality degradation for nine days. Token costs were stable, latency was fine, error rates were nominal. The agent was answering…

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7 min

AI Agent Governance and Compliance: A 2026 Operating Guide

For most of 2024 and the first half of 2025, AI governance for agents was a tomorrow problem. By mid-2025 it had become a this-quarter problem. The EU AI Act began entering force in stages, the NIST Generative AI…

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7 min

AI Agent Cost Optimization: A 2026 Tactical Playbook

This is not a primer on AI agent pricing models. The taxonomy of per-token, per-task, per-agent, and capability-based pricing already lives at AI agent cost models explained. This piece is the operational sibling.…

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7 min

AI Agent Watch List: Apartments and Flights

A "watch list" agent is the simplest, most useful agent most people never bother to set up. It polls a small number of listings on your behalf, applies criteria you specify once, and alerts you when something…

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7 min

AI Agent Newsletter from Notes: A Weekly Setup

A weekly newsletter is the most resilient distribution channel a founder has. Algorithms change; inboxes do not. The cost is the time you spend assembling the issue. An AI agent can pull that cost down without making…

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7 min

AI Agent for Meal Planning: A Weekly Setup

The pitch for a meal-planning agent is simple: 30 minutes of weekly menu work, gone. The trick is that meal planning is bound by hard physical constraints (allergens, what is in the pantry) and soft preferences…

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9 min

AI Agent Trust Models: Four Levels, Audit Trails, Recovery

The first time an agent does the wrong thing in production is the day a trust model becomes a budget line. Every team eventually writes one. The question is whether you write it before the incident or after. This…

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10 min

AI Agent Safety and Guardrails: Refusal, Blast Radius, Hostile Input

Safety for AI agents is structurally different from safety for chatbots. A chatbot that says something inappropriate creates a screenshot. An agent that does something inappropriate creates an incident: an email…

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8 min

AI Agent Trends 2026: Eight Shifts to Watch

Eight months into 2026 and the agent market has visibly matured in three ways the 2025 forecasts mostly missed: pricing structures are converging, buyer procurement bars have hardened, and the marketing language of…

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10 min

AI Agent Failure Modes: The Eight Ways Autonomous Agents Break

"Why did the agent fail?" is the question every operator asks the first time an agent misses. The honest answer is almost always one of eight things, and the eight things are different enough that lumping them…

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9 min

AI Agent Evaluation Metrics: What "Good" Actually Looks Like

"Is the agent any good?" is the question every buyer asks and almost no buyer can answer with a number. The shortage of good answers is not because the metrics are unknown; it is because most vendors publish one or…

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10 min

AI Agent Benchmarks 2026: The 5 That Actually Matter

The benchmark landscape for AI agents in 2026 is busier than the buyer landscape can absorb. Five benchmarks dominate the conversation: GAIA, SWE-bench, AgentBench, BFCL, and ToolBench. Each measures something…

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9 min

AI Agent Prompt vs LLM Prompt: 5 Real Differences (2026)

The first time someone writes an agent prompt the way they write an LLM prompt, the agent breaks within the first hour of running. Not because the prompt is wrong in a literal sense; it is just shaped for the wrong…

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