Best LLM API integration skills for Claude Code, Codex and other agents.

Reference of Claude API examples and guides covering tool use, vision, RAG, classification, summarization, text-to-SQL, prompt caching and agent patterns.

2025Emma/vibe-coding-cn

Operates an opencodex (`ocx`) proxy: finds CLI tasks offline, checks local configuration, and manages accounts, providers, models, routing and usage reports.

lidge-jun/opencodex

Gives text-only models sight by running the modlens CLI on an image path or URL and returning structured JSON evidence with transcribed text, layout and semantics.

liustack/modlens

Sets up access to the 9Router AI gateway, an OpenAI-compatible REST endpoint for chat, images, speech, embeddings, web search and web fetch, and indexes its capability skills.

decolua/9router

Adds persistent memory to Vercel AI SDK apps with the Mem0 provider, using a wrapped model or standalone retrieve and store utilities.

mem0ai/mem0

Multi-LLM collaborative brainstorming and planning. An agent skill from gcpdev/llm-council-skill.

gcpdev/llm-council-skill

Sends chat and code-generation requests through a 9Router gateway using OpenAI or Anthropic message formats, with streaming and auto-fallback combos.

decolua/9router

A skill your agent uses when a PinMe project (Worker TypeScript) needs to call OpenRouter-backed LLM APIs, including models, chat/completions, streaming, or OpenRouter web search.

glitternetwork/pinme

Build apps with the Claude API or Anthropic SDK. An agent skill from Kocoro-lab/Kocoro.

Kocoro-lab/Kocoro

Reference for building on Microsoft Foundry with the azure-ai-projects Python SDK: project clients, versioned agents, evaluations, connections, datasets and indexes.

microsoft/skills

Fetches RSS feeds from 90 top Hacker News blogs (curated by Karpathy), uses AI to score and filter articles, and generates a daily digest in Markdown with Chinese-translated titles, category…

vigorX777/ai-daily-digest

A skill your agent uses when writing code that calls the Gemini API for text generation, multi-turn chat, multimodal understanding, image generation, video generation, speech generation (TTS), voice…

google-gemini/gemini-skills

Guides adding an LLM provider to DeepChat through explicit source changes: collect the provider details, pick a transport path and add registry entries and tests.

ThinkInAIXYZ/deepchat

Shows how to call NEAR AI Cloud through an OpenAI-compatible API and verify that inference ran in a TEE, using attestation checks and signed chat responses.

internet-court/internet-court-skill

A skill your agent uses when building real-time, bidirectional streaming applications with the Gemini Live API, or migrating legacy Live models (2.0/2.5/3.1) to Gemini 3.8 Live.

google-gemini/gemini-skills

Guides changes to the cursor-byok server so provider conversation history stays append-only and each turn's history remains an exact prefix of the next, protecting prefix caches.

leookun/cursor-byok

Documents OmniRoute's cache endpoints for reading cache statistics and clearing entries, statistics or the reasoning cache, with notes on TTL and similarity settings.

diegosouzapw/OmniRoute

Builds AI chat interfaces and conversational UI with streaming responses, context management, and multi-modal support.

ancoleman/ai-design-components

Runs a task through Codex and Gemini CLIs in parallel alongside Claude, then synthesizes the three outputs into one answer with agreements and conflicts called out.

zereight/gitlab-mcp

Checks that ReasoningConfig fields are serialized into the right provider-specific JSON for OpenRouter, Anthropic, GitHub Copilot and Codex requests.

tailcallhq/forgecode

A skill your agent uses when the user wants to fact-check an article or verify factual claims in a document.

MigoXLab/dingo

Convert an academic paper PDF into a publish-ready, self-contained single-page project homepage (a self-contained index.html) — the kind of paper landing page researchers host on GitHub Pages.

QuZhan51496/paper2anything

Turn 2+ user reference images into a high-fidelity animated Codex companion using PocketMen's own local stack.

six-nut/PocketMen-with-you

Lets an agent drive DeepChat's bundled CLI for model calls, media generation, transcription, OCR, artifacts, configuration, Skills and MCP operations, within strict command rules.

ThinkInAIXYZ/deepchat

Operates the ccproxy inspector MITM system for intercepting, inspecting, and transforming LLM API traffic.

starbaser/ccproxy

AI-powered GitHub PR/Issue reviews with agentic codebase access.

AsyncFuncAI/AsyncReview

Daily paper/repo digest where YOU are the reader. An agent skill from AI45Lab/iDeer.

AI45Lab/iDeer

Looks up which AI models an OmniRoute gateway can reach, creates or updates model aliases and tests whether individual models respond.

diegosouzapw/OmniRoute

Create or operate a portable, auditable Chinese book-review short-video workflow from a clean local workspace.

jaxxchen003/book-video-factory

A skill your agent uses when the user asks how to build with OpenAI products or APIs and needs up-to-date official documentation with citations (for example: Codex, Responses API, Chat Completions…

aafqaq/codex-lb-enhanced

Use iDeer as a daily paper-reading workflow for chatbot-first users such as Codex, Gemini, or ChatGPT.

AI45Lab/iDeer

Call the free Agnes text model API for chat completions, streaming answers, coding help, tool-calling experiments, and OpenAI-compatible text generation.

kangarooking/agnes-free-model-skills

Migrate Python apps from Azure OpenAI Chat Completions to the Responses API.

microsoft/ai-agents-for-beginners

Stop and consult this skill whenever your response would include specific facts about Anthropic's products.

syahiidkamil/Software-Engineer-AI-Agent-Atlas

Helps show a model provider's usage, balance or quota in PiDeck: checks built-in support, points to the dialog templates, or writes a custom probe entry.

ayuayue/PiDeck

Maintain and extend AFM (maclocal-api), a Swift OpenAI-compatible local LLM server and CLI for Apple Foundation Models, MLX models, API gateway proxying, and Vision OCR.

scouzi1966/maclocal-api

Refreshes the OpenAI and Anthropic model lists in Typebot's forge blocks using models.dev as the reference, adding new models first and keeping older ones.

baptisteArno/typebot.io

Build async web applications and APIs with Starlette 1.0, the lightweight ASGI framework for Python.

simonw/research

Guides users through ccproxy as an OpenAI-compatible and Anthropic-compatible LLM API server with SDK integration, OAuth authentication, sentinel key substitution, model routing, and troubleshooting.

starbaser/ccproxy

A skill your agent uses when building applications with Gemini API hosted models, including Gemini and Gemma 4, working with multimodal content (text, images, audio, video), implementing function…

Ayuilos/Miffan

Update the libs/ SDK submodules (openai-go, anthropic-sdk-go, go-genai) to new upstream/fork versions, adapt tingly-box to API changes, and verify with build + vet + tests.

tingly-dev/tingly-box

A skill your agent uses for Codex models/pricing, scheduled tasks, skills, settings, setup, troubleshooting, customization, automations, and self-knowledge—including 'you,' 'your,' 'this app,' or…

theowenyoung/home

Guides building, debugging and tuning apps on the Claude API and Anthropic SDK, including prompt caching, and migrating code between Claude model versions.

warpdotdev/warp

A skill your agent uses when writing code that calls the Gemini API for text generation, multi-turn chat, multimodal understanding, image generation, video generation, streaming responses…

Ayuilos/Miffan

TanStack AI (alpha) provider-agnostic type-safe chat with streaming for OpenAI, Anthropic, Gemini, Ollama.

secondsky/claude-skills

A skill your agent uses when calling the app's AI gateway from agent tools — chat completions, embeddings, listing models, configuring defaults or BYOK, reading token/cost usage

butterbase-ai/butterbase-skills

Entry point for AI-agent work on AWS: pick a runtime, plan a migration for existing workloads, and build an executable POC — one phased flow.

aws/agent-toolkit-for-aws

A skill your agent uses when you need documentation for a third-party library, SDK, or API before writing code that uses it — for example, "use the OpenAI API", "call the Stripe API", "use the…

sudomakes/backroad