A practical AI agents handbook covering agent systems, agentic workflows, LangGraph, MCP/A2A, context engineering, agent memory, evaluation, observability, and multi-agent architecture. Current trend focus: Gemini Interactions API and managed agents, emerging agent runtimes, and production AI workflow patterns.
Prompthon-IO/agent-systems-handbook
Skill Claude CodeCodex
Review Gmail customer-support threads with a minimal-token, connector-first workflow. Use when Codex needs to read Gmail through the Codex Gmail connector, import cleaned messages into a local SQLite issue queue, apply deterministic cleanup and classification first, reserve model usage for JSON-only message…
Prompthon-IO/agent-systems-handbook
Skill Codex
Compare two structured agent-run artifacts to estimate cache efficiency, explain likely cache breaks, and produce a local benchmark report. Use when a user wants to understand whether a prompt layout, tool manifest, or history shape is helping or hurting prompt-cache reuse.
Prompthon-IO/agent-systems-handbook
Skill Codex
Persistent daily news monitoring backed by local SQLite and Markdown reports. Use when a user asks Codex to track named publications, fetch the last N hours of news, summarize recent articles by topic, deduplicate articles across runs, or maintain a personal newsroom that survives across sessions.
Prompthon-IO/agent-systems-handbook
Skill Codex
Scan local cleanup targets, apply readable cleanup rules, produce a preview report, and execute approved cleanup actions with logs. Use when a user asks Codex to clean up their computer, empty old Trash items, find duplicated Downloads files, review local storage clutter, or propose safe file cleanup actions before…
Prompthon-IO/agent-systems-handbook
Skill Codex
Preview-first local file organizer. Scan a user-named folder, classify files with readable rules, show a plan, execute approved moves and undo them. Use for sorting Downloads, renaming into category folders, or reviewing organization history, including scoped metadata-only course persistence. Do not use for knowledge…
Prompthon-IO/agent-systems-handbook
Skill Codex
Capture and synthesize local or explicitly provided web sources into cited Markdown notes. Use to register a research folder, summarize new or modified Markdown/TXT/PDF/DOCX files, deduplicate sources, surface conflicting claims, capture a provided URL or persist course knowledge notes with provenance. Do not use to…
Prompthon-IO/agent-systems-handbook
Skill Codex
Plan reusable presentation templates from a creative brief, optional brand assets, or an existing deck. Use when Codex needs to define a slide inventory, choose an editable presentation toolchain, author or validate a template manifest, adapt a visual system for PowerPoint or Google Slides, or prepare a reviewed…
Prompthon-IO/agent-systems-handbook
Skill Codex
Persistent product price tracking for natural-language product requests. Use when a user asks to watch, track, monitor, compare, or report prices for a product, especially with a target price or threshold such as "Watch MacBook Pro M3 14-inch and tell me if it drops below $1200." Supports source discovery…
Prompthon-IO/agent-systems-handbook
Skill Codex
Plan and inspect prompt-cache behavior for long-running Claude agent loops. Use when a user wants to split stable tool, system, and history context into cacheable layers, compare captured cache metadata, estimate cost impact from supplied pricing inputs, or keep durable memory outside the cached prefix.
Prompthon-IO/agent-systems-handbook
Skill Codex
Prepare channel-specific Prompthon social campaigns from a saved strategy and use guarded canonical Social operations when an isolated demo workspace is available. Use for course distribution drafts or explicitly requested production operation; keep strategy design separate and verify the deployed auth contract before…
Prompthon-IO/agent-systems-handbook
Skill Codex
Review a local evidence bundle or assistant transcript for credible harm signals, produce a redacted escalation memo and checklist, and stop before any external reporting or authority contact. Use when a user asks Codex to prepare a safety, legal, trust-and-safety, or incident handoff from local evidence.
Prompthon-IO/agent-systems-handbook
Skill Codex
Audit selected page snapshots for target-question answerability, entity positioning, headings, evidence and cross-page consistency, then recheck the same scope after edits. Use for AEO content review; do not promise search ranking, AI citations, indexing or publication.
Prompthon-IO/agent-systems-handbook
Skill Codex
Explain a business dataset with source-backed shape, grain, quality checks, distributions, numeric summaries, descriptive metrics and next questions. Use for read-only analysis; do not rewrite source tables, operate CRM entities or make unsupported causal claims.
Prompthon-IO/agent-systems-handbook
Skill Codex
Inspect messy CSV/XLSX tables and create a reviewed clean business dataset with normalized headers, types, dates and amounts. Use for preparing a table; do not operate CRM entities or turn the preparation step into business analysis.
Prompthon-IO/agent-systems-handbook
Skill Codex
Develop and iterate a content strategy with business goal, audience, pillars, searchable/shareable topics, priorities and an editorial calendar. Use before drafting a campaign; do not schedule posts or treat editorial judgments as measured search demand.
Prompthon-IO/agent-systems-handbook
Skill Codex
Resolve and safely create/update demo CRM contacts, deals, activity notes and follow-up tasks with revision checks and an atomic audit trail. Use for business-object operations; do not clean spreadsheets, analyze business performance or send customer messages.
Prompthon-IO/agent-systems-handbook
Skill Codex
Define, preview, execute and inspect manually triggered workflows with ordered deterministic tool steps and approval gates. Use for repeatable multi-step course routines and explicit retries. Do not use for file classification, knowledge synthesis, background scheduling or replacing another skill's work.
Prompthon-IO/agent-systems-handbook
Skill Codex
Deploy an approved and tested committed web project to a Vercel preview and verify provider identity, commit, status and actual URL. Use for publishing a website preview; production needs separate approval, and feature building or browser QA belong to other skills.
Prompthon-IO/agent-systems-handbook
Skill Codex
Inspect an existing web project and create or modify a working local page from a purpose, audience, sections, style and constraints brief. Use for building a website; leave final browser QA to webapp-testing and publishing to vercel-deploy.
Prompthon-IO/agent-systems-handbook
Skill Codex
Verify a local web app in a real browser with page, element, click, form, console and screenshot evidence. Use after a build or UI change; do not implement features or publish deployments with this skill.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: