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Agent skill

Using Ccproxy API

by starbaser in starbaser/ccproxy

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.

Custom licenceAuto-check passedAI & LLM Engineering

Install Using Ccproxy API

skills CLI
$ npx skills add starbaser/ccproxy --skill using-ccproxy-api -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install starbaser/ccproxy using-ccproxy-api --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/starbaser/ccproxy.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/using-ccproxy-api .claude/skills/using-ccproxy-api && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
using-ccproxy-api
GitHub stars
350
Token cost
~4k tokens
SKILL.md length
879 words
Files
3
Skills in repo
2
Repo updated
First seen
Licence
Custom licence

At a glance

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.

  • Works in 4 steps: Client sends sentinel key… → inject_auth hook detects sentinel… → shape hook replays a captured… → …
  • Installing ccproxy
  • SKILL.md covers Installation, Configuration, How authentication works and Quick start, plus 5 more sections
  • Calls nix, just and git; reaches api.anthropic.com and cloudcode-pa.googleapis.com; needs ANTHROPIC_API_KEY

What it does

Using Ccproxy API is an agent skill from starbaser/ccproxy. 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. Use when installing ccproxy, configuring SDK clients (Anthropic, OpenAI, LiteLLM, Agent SDK) against ccproxy, setting up per-project instances, debugging authentication errors, setting up OAuth token forwarding, or understanding the hook pipeline and shaping system.

Its SKILL.md is about 4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files (for example `reference/routing-and-config.md` and `reference/troubleshooting.md`).

It sits in AI & LLM Engineering, covering Model routing and gateways and LLM API integration. It works with OpenAI, Anthropic API, Google Gemini and OpenRouter. The repository describes itself as: Build mods for Claude Code: Hook any request, modify any response, /model "with-your-custom-model", intelligent model routing using your logic or ours.

When your agent uses it

  • Installing ccproxy
  • Configuring SDK clients (Anthropic
  • Agent SDK) against ccproxy
  • Setting up per-project instances

Example prompts

  • “Use the using-ccproxy-api skill to guide users through ccproxy as an OpenAI-compatible and Anthropic-compatible LLM API server with SDK integration…”
  • “/using-ccproxy-api”

Requirements

  • Python 3
  • A credential in ANTHROPIC_API_KEY

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Client sends sentinel key sk-ant-oat-ccproxy-{provider} as API key
  2. inject_auth hook detects sentinel prefix, looks up real token from providers[name].auth
  3. shape hook replays a captured {provider}.mflow shape: strips configured headers, injects content_fields from the incoming request, runs…
  4. Request reaches provider API with valid OAuth Bearer token and full identity envelope (user-agent, anthropic-beta, x-stainless-*, billing…

What it can do on your machine

Read from SKILL.md and the folder at commit f2c4769. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • nix
    • just
    • git
    • curl

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • api.anthropic.com
    • cloudcode-pa.googleapis.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • ANTHROPIC_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Using Ccproxy API loads about 4k tokens when it runs. Until then it costs about 121 tokens; SKILL.md has 879 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~121
When it runs · the whole SKILL.md, loaded when a task matches
~4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 879 words (~3,998 tokens).

“ccproxy exposes an OpenAI-compatible and Anthropic-compatible API via a mitmproxy-based interceptor. Any SDK or HTTP client that supports custom base_url can use it.”

— opening of SKILL.md by starbaser, Custom licence
name
using-ccproxy-api

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files in skills/using-ccproxy-api of starbaser/ccproxy.

  • SKILL.md
  • reference/routing-and-config.md
  • reference/troubleshooting.md

Open the folder on GitHubat commit f2c4769

Compare with similar skills

Using Ccproxy API next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Using Ccproxy API compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Using Ccproxy API this skillstarbaser/ccproxy350—~4kAutomated safety check: PassCustom licence
Neon AI Gatewayneondatabase/agent-skills100—~5.1kAutomated safety check: NotesApache-2.0
Embeddings via 9Routerdecolua/9router30k—~604Automated safety check: PassMIT
ModLens Image Vision Bridgeliustack/modlens4.2k—~1.3kAutomated safety check: NotesMIT
Provider Integrationhex/claude-council851—~635Automated safety check: PassMIT
OpenCode Agent Provider for NanoClawnanocoai/nanoclaw31k—~5kAutomated safety check: NotesMIT

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Works with

Categories

Questions about Using Ccproxy API

What does Using Ccproxy API do?

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. Using Ccproxy API is an agent skill from starbaser/ccproxy. 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.

When should I use Using Ccproxy API?

Using Ccproxy API fits situations like: installing ccproxy; configuring SDK clients (Anthropic; agent SDK) against ccproxy; setting up per-project instances.

How do I install Using Ccproxy API in Claude Code?

Run `npx skills add starbaser/ccproxy --skill using-ccproxy-api -a claude-code`. Or copy the skill folder (skills/using-ccproxy-api in starbaser/ccproxy) into .claude/skills/using-ccproxy-api in your project. Claude Code loads it when a task matches its description.

How do I install Using Ccproxy API in Codex?

Run `npx skills add starbaser/ccproxy --skill using-ccproxy-api -a codex`. Or copy the skill folder (skills/using-ccproxy-api in starbaser/ccproxy) into .agents/skills/using-ccproxy-api in your project. Codex loads it when a task matches its description.

Can I use Using Ccproxy API in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add starbaser/ccproxy --skill using-ccproxy-api -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/using-ccproxy-api, .gemini/skills/using-ccproxy-api, .github/skills/using-ccproxy-api and .opencode/skills/using-ccproxy-api in your project.

What does Using Ccproxy API need to run?

Going by SKILL.md and its folder, Using Ccproxy API needs the command-line tools its instructions call (nix, just, git and curl) and credentials named ANTHROPIC_API_KEY. Our summary lists: Python 3; A credential in ANTHROPIC_API_KEY.

Does Using Ccproxy API access the network?

SKILL.md names 2 domains. In commands or code: api.anthropic.com and cloudcode-pa.googleapis.com; the agent is likely to contact these when it follows the instructions. This is read from the text; nothing was executed.

Is Using Ccproxy API safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Using Ccproxy API use?

Using Ccproxy API has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Using Ccproxy API use?

About 4k tokens (SKILL.md is roughly 16k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Using Ccproxy API?

Skills that share tags, products or a category with Using Ccproxy API: Neon AI Gateway (neondatabase/agent-skills, 100 stars), Embeddings via 9Router (decolua/9router, 30k stars), ModLens Image Vision Bridge (liustack/modlens, 4.2k stars) and Provider Integration (hex/claude-council, 851 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Using Ccproxy API?

starbaser (a GitHub user) maintains it in starbaser/ccproxy, which has 350 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on August 10, 2026.

Source: starbaser/ccproxy on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.