Project 42 Field Guide

Answers for the work in front of you.

Practical references with visible sources and verification dates. Learn a concept, check a workflow, or compare providers without digging through a full course.

Showing 50 of 50 resources

ReferenceReference

AI Glossary

Plain-language definitions for models, prompts, context, agents, tools, retrieval, and evaluations.

Core concept
Audience
Learner, Practitioner
Level
Beginner
Prerequisites
None
Owner
Project42 Editorial
CurrentReviewed
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ChecklistChecklist

Prompt Checklist

A compact preflight for tasks, context, constraints, output, and verification.

Core concept
Audience
Learner, Practitioner
Level
Beginner
Prerequisites
None
Owner
Project42 Editorial
CurrentReviewed
Open →
ChecklistChecklist

Agent Safety Checklist

Permission, data, verification, logging, and rollback questions before an agent acts.

Core concept
Audience
Developer, Operator
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
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Decision toolDecision Path

Provider Decision Card

A reusable comparison card for quality, cost, data, tools, and operations.

AnthropicOpenAIGoogle
Audience
Developer, Operator, Leader
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
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How-toTemplate

Daily AI Task Starter

A reusable prompt and working loop for turning ordinary work into a clear, verifiable AI task.

Core concept
Audience
Learner, Practitioner
Level
Beginner
Prerequisites
None
Owner
Project42 Editorial
CurrentReviewed
Open →
How-toPlaybook

Context Budget Playbook

Keep long AI sessions focused by loading the smallest useful working set and refreshing stale context deliberately.

Core conceptAnthropicOpenAI
Audience
Practitioner, Developer
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Decision toolDecision Path

AI Output Verification Ladder

Choose a level of checking that matches the claim, uncertainty, and consequence of the work.

Core concept
Audience
Learner, Practitioner, Developer
Level
Beginner
Prerequisites
None
Owner
Project42 Editorial
CurrentReviewed
Open →
AI coding agentsChecklist

AI-Assisted Code Review Checklist

Review AI-assisted changes for correctness, security, evidence, maintainability, and scope without treating model output as approval.

Core conceptAnthropicOpenAIGoogle
Audience
Developer, Operator, Leader
Level
Intermediate
Prerequisites
2 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
AI coding agentsDecision Path

AI Coding-Agent Permission Boundaries

Define least-privilege tool access, trust boundaries, approval gates, and postconditions for coding-agent work.

Core conceptAnthropicOpenAIGoogle
Audience
Developer, Operator, Leader
Level
Intermediate
Prerequisites
2 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
AI coding agentsTemplate

AI Coding-Agent Work Plan Template

Turn a requested outcome into a bounded, dependency-aware plan with acceptance evidence and explicit approval gates.

Core conceptAnthropicOpenAIGoogle
Audience
Practitioner, Developer, Operator, Leader
Level
Beginner
Prerequisites
2 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
AI coding agentsPlaybook

Implementation Evidence Loop

Implement coding-agent changes in small increments that continuously prove scope, behavior, safety, and recoverability.

Core concept
Audience
Practitioner, Developer, Operator
Level
Intermediate
Prerequisites
2 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
AI coding agentsChecklist

Repository Orientation Checklist

Build a verified map of a repository before asking an AI coding agent to plan or modify it.

Core conceptAnthropicOpenAIGoogle
Audience
Practitioner, Developer, Operator
Level
Beginner
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
AI coding agentsTemplate

Test and Debug Handoff

Transfer a failing or partially verified coding-agent change with a reproducible state, bounded hypothesis, and clear next action.

Core concept
Audience
Practitioner, Developer, Operator
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
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Evaluation and safetyPlaybook

Bounded AI Red-Team Exercise

Plan and run authorized adversarial tests against the complete AI application while protecting people, data, systems, and downstream tools.

Core concept
Audience
Developer, Operator, Leader
Level
Advanced
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Evaluation and safetyTemplate

AI Evaluation Plan Charter

Turn an AI use case into a versioned evaluation plan with measurable outcomes, representative slices, blocking thresholds, accountable owners, and a repeatable decision process.

Core concept
Audience
Practitioner, Developer, Operator, Leader
Level
Intermediate
Prerequisites
2 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Evaluation and safetyTemplate

Evidence-Based AI Evaluation Rubric

Design observable criteria, anchored score levels, calibrated graders, and blocking safety rules that make qualitative AI judgments reproducible.

Core concept
Audience
Practitioner, Developer, Educator, Leader
Level
Intermediate
Prerequisites
2 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Evaluation and safetyChecklist

Human-Controlled AI Release Gate

Convert evaluation, safety, security, privacy, operational, and rollback evidence into an accountable promote, hold, or reject decision.

Core concept
Audience
Developer, Operator, Leader
Level
Advanced
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Evaluation and safetyPlaybook

Representative AI Evaluation Dataset

Build a privacy-safe, versioned set of normal, boundary, adversarial, and incident-derived cases that measures the application people will actually use.

Core concept
Audience
Practitioner, Developer, Operator, Educator
Level
Intermediate
Prerequisites
2 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
MCP and orchestrationTemplate

Agent Handoff Evidence Contract

Transfer work between agents or people with explicit ownership, minimized context, verified state, acceptance evidence, and safe continuation rules.

Core conceptAnthropicOpenAIGoogle
Audience
Practitioner, Developer, Operator
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
MCP and orchestrationReference

MCP Primitives and Lifecycle Reference

Use MCP hosts, clients, servers, capabilities, transports, tools, resources, and prompts without confusing protocol roles or trust boundaries.

Core conceptAnthropicOpenAIGoogle
Audience
Learner, Practitioner, Developer, Operator
Level
Beginner
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
MCP and orchestrationChecklist

MCP Server Trust Review

Review an MCP server's provenance, code path, identity, data access, tools, authorization, and containment before connection.

Core conceptAnthropic
Audience
Developer, Operator, Leader
Level
Intermediate
Prerequisites
2 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
MCP and orchestrationDecision Path

Agent Orchestration Pattern Decision Guide

Choose direct tools, deterministic workflows, manager-agent delegation, handoffs, parallel work, or human routing from control and evidence needs.

Core conceptAnthropicOpenAIGoogle
Audience
Practitioner, Developer, Operator, Leader
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
MCP and orchestrationTemplate

Agent Tool Contract Design Template

Design model-callable tools with a narrow purpose, explicit schemas, enforced authorization, predictable errors, and verifiable side effects.

Core conceptAnthropicOpenAIGoogle
Audience
Developer, Operator
Level
Intermediate
Prerequisites
2 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
ContextPlaybook

Context Refresh Runbook

Refresh long-running AI work without carrying forward superseded decisions, stale facts, unsafe instructions, or unresolved side effects.

Core conceptAnthropicOpenAIGoogle
Audience
Practitioner, Developer, Operator
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
ContextChecklist

Context Selection Checklist

Select the smallest trustworthy working set by relevance, authority, freshness, provenance, sensitivity, and contradiction value.

Core concept
Audience
Practitioner, Developer, Operator
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
PromptingDecision Path

Prompt Pattern Decision Guide

Choose the smallest prompting pattern that matches the failure you need to prevent, then evaluate it against representative cases.

Core conceptAnthropicOpenAIGoogle
Audience
Learner, Practitioner, Developer
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
PromptingTemplate

Reusable Prompt Template Pack

Copy safe, provider-neutral templates for summarizing, transforming, comparing, researching, and reviewing work with visible evidence.

Core concept
Audience
Learner, Practitioner, Educator
Level
Beginner
Prerequisites
None
Owner
Project42 Editorial
CurrentReviewed
Open →
PromptingHow To

Structured Output Contract

Design portable output contracts, use provider schema features where supported, and validate shape, meaning, authority, and evidence before downstream use.

Core conceptAnthropicOpenAIGoogle
Audience
Practitioner, Developer
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
PromptingTemplate

Task Framing Contract

Turn an unclear request into an outcome, authority boundary, evidence plan, and explicit stopping condition before asking an AI system to work.

Core concept
Audience
Learner, Practitioner, Developer
Level
Beginner
Prerequisites
None
Owner
Project42 Editorial
CurrentReviewed
Open →
Provider workflowsPlaybook

Anthropic Evaluation and Error Triage

Turn a Claude workflow into measurable tests, preserve request evidence, classify API failures, and release or recover through explicit gates.

Anthropic
Audience
Developer, Operator, Leader
Level
Intermediate
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Provider workflowsPlaybook

Anthropic Messages API Request Workflow

Send a bounded Claude Messages API request with environment-based credentials, explicit configuration, response inspection, and recoverable failure handling.

Anthropic
Audience
Developer, Operator
Level
Beginner
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Provider workflowsReference

Anthropic Strict Tools and Structured Output

Choose between Claude JSON output and strict tool use, define constrained schemas, validate semantics, and keep tool execution under application control.

Anthropic
Audience
Developer, Operator
Level
Intermediate
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Provider workflowsPlaybook

Cross-Provider Evaluation and Migration Workflow

Compare or migrate Anthropic, OpenAI, and Google workflows through one application-owned contract, provider-specific adapters, representative evaluation, staged cutover, and tested rollback.

Core conceptAnthropicOpenAIGoogle
Audience
Developer, Operator, Leader
Level
Advanced
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Provider workflowsTemplate

Cross-Provider Runtime Configuration Contract

Separate application intent from Anthropic, OpenAI, and Google credentials, models, API versions, state, capabilities, and operational limits without pretending their APIs are equivalent.

Core conceptAnthropicOpenAIGoogle
Audience
Developer, Operator, Leader
Level
Intermediate
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Provider workflowsPlaybook

Google Gemini Evaluation and Error Triage

Build representative Gemini evaluation datasets, preserve interaction evidence, classify API failures, and release or recover through explicit gates.

Google
Audience
Developer, Operator, Leader
Level
Intermediate
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Provider workflowsPlaybook

Google Gemini Interactions API Request Workflow

Send a bounded Gemini Interactions API request with environment-based credentials and model configuration, typed response inspection, and recoverable failure handling.

Google
Audience
Developer, Operator
Level
Beginner
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Provider workflowsReference

Google Gemini Functions and Structured Output

Choose between Gemini schema-constrained output and function calling, define narrow contracts, validate semantics, and keep execution under application control.

Google
Audience
Developer, Operator
Level
Intermediate
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Provider workflowsPlaybook

OpenAI Evaluation and Error Triage

Apply eval-driven development to an OpenAI workflow, preserve request evidence, classify failures, and release or recover through explicit gates.

OpenAI
Audience
Developer, Operator, Leader
Level
Intermediate
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Provider workflowsPlaybook

OpenAI Responses API Request Workflow

Send a bounded OpenAI Responses API request with environment-based credentials, explicit configuration, output inspection, and recoverable failure handling.

OpenAI
Audience
Developer, Operator
Level
Beginner
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Provider workflowsReference

OpenAI Strict Functions and Structured Output

Choose between Responses structured text and strict function calls, define constrained schemas, validate semantics, and keep execution under application control.

OpenAI
Audience
Developer, Operator
Level
Intermediate
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
VerificationChecklist

Citation Support Checklist

Check that every citation resolves, identifies the intended source, and supports the nearby claim without scope, date, or attribution drift.

Core conceptAnthropicOpenAIGoogle
Audience
Learner, Practitioner, Educator
Level
Beginner
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
ResearchTemplate

Claim Decomposition Map

Break a broad answer into atomic factual, comparative, causal, predictive, and normative claims so each can receive the evidence and review it needs.

Core concept
Audience
Learner, Practitioner, Developer, Educator
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
VerificationDecision Path

Consequence-Based Review Gate

Scale evidence, independence, expertise, approval, monitoring, and rollback to the realistic harm caused by an incorrect AI-assisted result.

Core concept
Audience
Practitioner, Developer, Operator, Leader
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
VerificationPlaybook

Fact Verification Workflow

Verify material facts through bounded questions, current primary evidence, contradiction searches, reproducible checks, and explicit uncertainty.

Core concept
Audience
Learner, Practitioner, Developer, Operator
Level
Intermediate
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
ResearchDecision Path

Source Authority Ladder

Choose evidence by ownership, directness, currency, scope, and independence instead of treating every search result as equally trustworthy.

Core concept
Audience
Learner, Practitioner, Developer, Educator
Level
Beginner
Prerequisites
1 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Troubleshooting and operationsTroubleshooting

Agent Tool Failure Recovery

Diagnose tool selection, schema, authorization, execution, result-matching, timeout, and side-effect failures without allowing an agent to retry blindly.

Core concept
Audience
Developer, Operator
Level
Advanced
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Troubleshooting and operationsTroubleshooting

AI API Failure Triage

Classify authentication, request, quota, timeout, rate-limit, provider, and application failures before retrying or escalating an AI API call.

Core concept
Audience
Developer, Operator
Level
Intermediate
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Troubleshooting and operationsDecision Path

AI Incident Triage

Stabilize an AI-enabled service, classify impact, preserve privacy-safe evidence, reconcile uncertain actions, and route decisions to accountable humans.

Core concept
Audience
Developer, Operator, Leader
Level
Advanced
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Troubleshooting and operationsPlaybook

AI Rollback and Incident Closeout

Restore a verified AI workflow, reconcile state and side effects, prove recovery, and close an incident only after corrective work has accountable evidence.

Core concept
Audience
Developer, Operator, Leader
Level
Advanced
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →
Troubleshooting and operationsPlaybook

Context and Quality Regression Triage

Isolate whether an AI quality regression comes from task distribution, prompts, context, retrieval, model behavior, tools, graders, or application changes.

Core concept
Audience
Practitioner, Developer, Operator
Level
Advanced
Prerequisites
3 listed
Owner
Project42 Editorial
CurrentReviewed
Open →