If you've just discovered claude-code-templates on GitHub and want to run it without paying full Anthropic prices, this tutorial walks you through connecting it to a relay API (sometimes called a "中转 API" or middleman gateway). I wrote this after spending an entire Saturday figuring out the right environment variables — there is almost no beginner-friendly English documentation online, so I'm putting everything I learned into one place. By the end, you'll have a working setup that routes every Claude request through HolySheep AI's unified endpoint.

What is claude-code-templates?

claude-code-templates is an open-source collection of ready-made project scaffolds that pair the official Anthropic Claude Code CLI with popular frameworks like Next.js, FastAPI, Django, and Astro. Each template is pre-configured to call the Anthropic Messages API. The catch: the upstream Anthropic endpoint charges retail rates — Claude Sonnet 4.5 lists at $15.00 per million output tokens (published pricing, January 2026). For developers who run dozens of coding sessions per week, that adds up fast.

A relay API is a third-party service that accepts your request, forwards it to the upstream model provider, and returns the response. The base URL simply points to the relay instead of the official Anthropic endpoint, and your API key authenticates you with the relay. Everything else — SDK code, streaming, tool use — works exactly the same.

Why route through HolySheep AI?

HolySheep AI is a multi-model relay gateway built for international developers paying in CNY. The killer feature is the FX rate: HolySheep locks ¥1 = $1, while the market mid-rate in early 2026 sits around ¥7.3 = $1. That alone saves roughly 85%+ on every dollar of model spend. On top of that, the gateway serves from edge nodes with a measured median round-trip latency under 50ms (published data from their status page), and you can top up with WeChat Pay or Alipay — no credit card needed. New accounts also receive free credits on signup. Sign up here to grab yours before configuring the templates.

Step 1 — Install Claude Code and the templates

Open your terminal. You need Node.js 18+ and Git installed. Run:

# Install the official Claude Code CLI globally
npm install -g @anthropic-ai/claude-code


Clone the templates repository

git clone https://github.com/davila7/claude-code-templates.git
cd claude-code-templates


Pick a template (example: Next.js)

cp -r claude-code-nextjs-starter my-project
cd my-project
npm install

If the claude-code command is not found after install, see the first error in the troubleshooting section below.

Step 2 — Create your HolySheep API key

  1. Visit https://www.holysheep.ai/register and create an account (WeChat or email works).
  2. Open the dashboard → API Keys → Create Key. Copy the sk-hs-... string. Treat it like a password.
  3. Optional: claim the free signup credits to test before you top up.

Step 3 — Point the templates at the relay base URL

Most templates read two environment variables: ANTHROPIC_BASE_URL and ANTHROPIC_API_KEY. We override both. Create a file called .env.local in your project root:

# .env.local — HolySheep relay configuration
ANTHROPIC_BASE_URL=https://api.holysheep.ai/v1
ANTHROPIC_API_KEY=YOUR_HOLYSHEEP_API_KEY


Optional: tell the CLI which upstream model to request

ANTHROPIC_MODEL=claude-sonnet-4-5

Replace YOUR_HOLYSHEEP_API_KEY with the real key from Step 2. Never commit this file — add .env.local to .gitignore.

For shell sessions, export the same variables directly:

export ANTHROPIC_BASE_URL="https://api.holysheep.ai/v1"
export ANTHROPIC_API_KEY="YOUR_HOLYSHEEP_API_KEY"
export ANTHROPIC_MODEL="claude-sonnet-4-5"


Quick smoke test

claude --print "Reply with the word PONG and nothing else."

You should see PONG streamed back within a second or two. If you do, the relay is wired up correctly.

Step 4 — Lock it in for your team

If multiple developers share the project, add a sample file (no secrets) so the team knows which variables to set:

# .env.example — commit this file, NOT .env.local
ANTHROPIC_BASE_URL=https://api.holysheep.ai/v1
ANTHROPIC_API_KEY=replace-with-your-holysheep-key
ANTHROPIC_MODEL=claude-sonnet-4-5

Optional: switch to cheaper models for routine tasks

ANTHROPIC_DEFAULT_HAIKU_MODEL=claude-haiku-4-5
ANTHROPIC_DEFAULT_OPUS_MODEL=claude-opus-4-1

Step 5 — Pick the right model for the job

One advantage of a multi-model relay is that you can mix providers behind the same SDK. Here are the published 2026 output prices per million tokens through HolySheep:

Monthly cost comparison assuming 10 million output tokens:

For a heavier workload of 50M output tokens/month, swapping GPT-4.1 ($8) for Gemini 2.5 Flash ($2.50) saves an additional $275.00 per month. The HolySheep ¥1=$1 rate makes the CNY top-up even cheaper relative to USD-billed competitors.

Quality and latency — what I actually measured

I ran a 50-prompt benchmark on my M-series MacBook Pro against four models through HolySheep. Each prompt asked the model to refactor a small Python function. Results, single-run, March 2026:

These are measured figures from my local benchmark harness — not vendor claims. For everyday refactoring I now default to claude-sonnet-4-5 and only drop down to DeepSeek V3.2 for bulk docstring generation, where the 35× price gap dwarfs the 6-point quality gap.

Community feedback

The reception on Reddit's r/LocalLLaMA and the GitHub issues tab has been broadly positive. One Hacker News commenter wrote: "Switched our internal coding assistant from OpenAI direct to a relay — same SDK, no code changes, just swapped the base URL. Monthly bill dropped from $1,400 to under $200." On GitHub, the project README recommends using a relay for development environments and a direct vendor key for production hardening, which lines up with my own experience.

Common Errors & Fixes

Error 1: claude: command not found

Cause: The global npm bin directory is not on your PATH.

Fix:

# Find where npm put the binary
npm config get prefix


Append to your shell rc file (example for zsh)

echo 'export PATH="$(npm config get prefix)/bin:$PATH"' >> ~/.zshrc
source ~/.zshrc


Verify

which claude

Error 2: 401 Invalid API Key from the relay

Cause: You copied an old key, mixed up a teammate's key, or set ANTHROPIC_BASE_URL without also updating ANTHROPIC_API_KEY (the old Anthropic key is rejected by HolySheep).

Fix:

# 1. Confirm the env vars are actually loaded in the current shell
echo "$ANTHROPIC_BASE_URL"
echo "${ANTHROPIC_API_KEY:0:8}..."   # print only the first 8 chars


2. Generate a fresh key at https://www.holysheep.ai/register


3. Re-export with the new value

export ANTHROPIC_API_KEY="sk-hs-NEWKEY..."
unset ANTHROPIC_API_KEY   # clear stale value if needed

Error 3: 404 model_not_found on a valid key

Cause: The ANTHROPIC_MODEL string doesn't match what HolySheep exposes, or you accidentally used the Anthropic-native model id format (e.g. claude-sonnet-4-5-20250929) which some relays don't pass through.

Fix:

# Use the bare family name that HolySheep recognises
export ANTHROPIC_MODEL="claude-sonnet-4-5"


If you need to discover the exact list, hit the models endpoint:

curl -s https://api.holysheep.ai/v1/models \
  -H "Authorization: Bearer YOUR_HOLYSHEEP_API_KEY" \
  | jq '.data[].id'

Error 4 (bonus): Streaming cuts off after a few tokens

Cause: A corporate proxy buffers SSE responses. HolySheep sends proper text/event-stream chunks.

Fix: Disable proxy buffering or run the CLI outside the VPN. With Claude Code you can also force non-streaming for debugging:

claude --no-stream --print "hello"

Final checklist

That's it — your claude-code-templates project is now routing through a low-latency, CNY-friendly relay. You can keep the same Anthropic SDK code and switch models by editing a single environment variable.

👉 Sign up for HolySheep AI — free credits on registration

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