Xcode Intelligence: connect to ModelFold

Higher credit usage on the first session is normal

Agents attach fixed tool definitions and a system prompt to every request, often tens of thousands of tokens. On the first session this content is written to the cache and billed as full input, so credit usage is higher. Later requests hit the cache and are billed at the much lower cached rate, so usage drops noticeably. This is expected behavior — you are not being overcharged. For high-volume usage, please contact support — we can offer discounts.

All coding tools · More integrations · Unsupported and limited tools

Configured from official documentation; not tested in this client. This verifies configuration availability, not every agent feature or model.

Install and prepare

Install the official release using the installation link in the vendor documentation. For an editor extension, use the official publisher in your editor marketplace. Create a key in ModelFold API Keys; keep it out of project files and screenshots. Where a snippet references MODELFOLD_API_KEY, set it in the environment before launching the tool:

export MODELFOLD_API_KEY="YOUR_MODELFOLD_API_KEY"

Configure the provider

Setup location: Xcode → Settings → Intelligence → Add Model Provider. Verification: Configured from official documentation; not tested in this client.

Use Xcode 26 or later. Add a Chat Completions-compatible provider under Intelligence. Enter the host URL, because Xcode appends /v1. In the authorization-header field use Bearer followed by your key.

Provider: OpenAI Compatible / Chat Completions
URL: https://modelfold.ai
API Key: YOUR_MODELFOLD_API_KEY
Model ID: gpt-6-1-sol

This covers the custom chat provider. External coding agents use separate authentication. If your version exposes a raw API key field, follow its label instead of adding Bearer twice.

Claude conversations through the OpenAI-compatible route do not use the native Claude prompt cache. For long tasks, consider a model with automatic caching or a client with native Anthropic support.

Official configuration reference.

Model and endpoint

Field	Value
Endpoint used by this guide	https://modelfold.ai
API model ID	gpt-6-1-sol
Credential	Your ModelFold API key

The model ID must match All model IDs. Client prefixes such as openai/ select an adapter and are not part of the server model ID. Do not add /v1 or /messages twice; follow this tool's example.

Verify

Start a new chat, select the configured provider/model, and send: Reply with exactly OK. Do not use tools. A successful response verifies that model route only. Then check the corresponding request in ModelFold usage. A model appearing in the picker alone is not a connectivity test. Before a long coding task, try one small change in a disposable project.

Troubleshooting

Symptom	Check
401	Use a ModelFold key, not a vendor subscription token; remove extra whitespace.
404	Check the protocol, URL suffix and exact model ID.
Empty model picker	Enter the documented ID manually when supported; restart the client after changing environment variables.
Chat works, tools fail	Select a tool-capable model; client agent features are not guaranteed by basic chat compatibility.
Requests still use the built-in service	Select your custom provider explicitly and check saved settings/environment overrides.

Prices follow the model price page. Tasks can make multiple requests. Final deductions are shown in your account; client cost estimates are not the billing record.