Connect Claude Code to CometAPI for Terminal AI Development

Claude Code brings an assistant, a repository, and a terminal into one working loop. CometAPI can provide the Anthropic-compatible route behind that loop, while its model catalog gives you a current source for choosing a Claude model. A safe setup has four checkpoints: install the command, put the CometAPI host and a locally supplied credential in the right settings scope, select a model ID that is listed now, and run a harmless prompt before allowing repository changes.

Last reviewed: 2026-08-24

Direct answer

To connect Claude Code to CometAPI, install Claude Code, configure its environment settings, select a current model, and test the route. The CometAPI Claude Code integration guide documents the supported installers, settings paths, environment names, and troubleshooting. It supports macOS, Linux, and Windows; Windows also needs Git for Windows.

Install with the platform method that fits your machine. Homebrew is a documented macOS option, while the linked guide lists the official shell and Windows commands:

# Use the platform installer listed in the linked CometAPI guide when Homebrew is unavailable.
brew install --cask claude-code
claude --version

The version check is the first gate. If claude –version does not return, fix the local installation or shell path before investigating a remote route.

Create the settings file in the scope you intend. On macOS and Linux, user settings live at ~/.claude/settings.json; on Windows, use the .claude/settings.json file under your user profile. A minimal, redacted example is:

{
  "env": {
    "ANTHROPIC_AUTH_TOKEN": "[REDACTED]",
    "ANTHROPIC_BASE_URL": "[COMETAPI_HOST_FROM_GUIDE]"
  },
  "model": "[MODEL_ID_FROM_CATALOG]"
}

Replace COMETAPI_HOST_FROM_GUIDE with the exact HTTPS host named by the CometAPI integration documentation . The guide’s host is api.cometapi.com over HTTPS; replace the marker with that exact value. Do not add a path copied from a different SDK example, and do not leave the marker in a real settings file. The marker keeps the code sample free of a hidden URL while the linked source gives you the authoritative value. Put the real credential in a local secret store or an ignored local file, never in a committed example.

The model field makes selection explicit. First query the public catalog described by List available CometAPI models . That page documents GET /api/models as a public request that does not require an Authorization header. The following workflow assigns COMETAPI_API_HOST interactively, so it cannot fail merely because an unset variable was copied:

# Paste the exact HTTPS host named in the linked model-catalog page.
read -r -p "CometAPI HTTPS host: " COMETAPI_API_HOST
export COMETAPI_API_HOST
curl -fsS "${COMETAPI_API_HOST%/}/api/models"

Paste the host shown by the linked page when prompted, then inspect the returned data records. Find a record whose provider or name identifies the Claude family and whose capabilities fit your task. Copy that record’s exact id into the model setting. Do not invent a model ID from an old post, and do not silently switch to another provider when the intended record is absent. Model availability changes, so this lookup belongs immediately before a new workstation test or a model change.

Restart the terminal after editing settings, start Claude Code in the project root, and check the active source:

cd your-project
claude

/status

The Claude Code settings reference explains that model is a real setting and that user, shared-project, project-local, and managed files have different scopes and precedence. It also documents /status as the place to inspect setting sources. Use that evidence in two parts: confirm that /status points to the file you meant to edit, then inspect that active file to confirm its model value is the exact catalog id you selected. A harmless prompt such as “Reply with exactly route-ok.” supplies the final route check. A successful response confirms the session can complete a request; it does not justify claiming that a status screen echoes a model ID when your version does not show one.

For the happy path, record only sanitized metadata: tool version, operating-system family, settings scope, base host, selected model ID, response status class, latency, result, and an error category if present. Do not retain the credential, full prompt, repository paths, or an unfiltered response.

Who this is for

This guide is for developers who already use Claude Code and want terminal coding sessions routed through CometAPI. It is useful when you want to:

keep Claude Code as the interaction surface while changing the model provider route;
choose a Claude model from a live catalog rather than a stale hard-coded example;
test user, project-local, or shared settings without accidentally committing a secret;
distinguish an installation problem from a settings-precedence, authentication, model, or network problem; or
hand a repeatable setup to a teammate while keeping the credential private.

It is not a substitute for Claude Code product documentation, an organization’s managed policy, or a production secret-management system. Treat it as a source-backed operator runbook for a first connection and a safe model change.

Key takeaways

Follow the exact host and environment names in the CometAPI Claude Code integration guide . A path used by another client is a different contract.
Keep the credential local and redacted in examples. Shared project settings may contain a model choice, but they should not contain a personal secret.
Query GET /api/models before choosing a Claude model. The public records expose IDs, providers, model types, capabilities, endpoint hints, and pricing metadata.
Put the selected catalog id in Claude Code’s model setting, verify the setting source with /status, and then run a harmless prompt.
Validate in layers: executable version, catalog reachability, settings source, model value, and response.
If you need a repository hygiene checklist, see how to keep CometAPI keys out of tutorial repositories .

Sources checked

These public references cover the setup and troubleshooting claims:

Use Claude Code with CometAPI — installation methods, supported operating systems, settings paths, environment names, host, and troubleshooting.
Claude Code settings — user, shared-project, project-local, and managed scopes; precedence; the model setting; and how to inspect what loaded.
List available CometAPI models — the public catalog request, its lack of an authorization requirement, and the metadata returned for each record.
The CometAPI Cookbook Claude Code recipe — a public companion implementation example that mirrors the canonical setup and links back to it. Use the canonical guide for authoritative values.
Messages API reference — the official Anthropic reference to consult for field-level diagnosis when a Claude-compatible request needs contract checking.

The CometAPI integration page is the primary setup source. The Anthropic settings page supplies the scope and precedence model, the catalog page supplies current model metadata, the cookbook supplies a companion recipe, and the Messages reference is a separate contract reference for deeper troubleshooting.

Contract details to verify

Base host and endpoint family

Use the host named in the CometAPI integration guide for ANTHROPIC_BASE_URL. The guide identifies the HTTPS host as api.cometapi.com. Keep the value at that host for Claude Code; do not append /v1 or an endpoint path merely because a raw client or another SDK uses one. For a separate Anthropic Messages client, consult the Messages API reference for that client’s request and response contract. Claude Code’s setting and a hand-written HTTP request are related but not interchangeable interfaces.

Credential boundary

The documented setting name is ANTHROPIC_AUTH_TOKEN. On a real workstation, inject its value through a local secret store, a process environment, or a file excluded from version control. In examples use [REDACTED], and never paste a live value into shell history, a commit, a screenshot, an issue, or a diagnostic bundle. Share the variable name and loading procedure with teammates, not the value. If a shared project file needs the model field, commit only that non-secret choice and let each developer provide credentials locally.

Model identity and confirmation

The model catalog returns records with an id, provider, model type, capability information, endpoint hints, and public pricing metadata. Use the catalog immediately before selection. Filter by the provider or name that identifies the Claude family, read the capabilities relevant to your task, and copy the exact id. Then set that id in the model key of the settings file you intend to use.

Confirmation has three observable parts:

The active settings file contains the exact id copied from the catalog.
/status shows that the intended user, project, or managed settings source is active.
A short, non-sensitive prompt returns a response through the session.

The settings documentation establishes the model key and setting-source check; it does not promise that every Claude Code version prints the selected model in /status. Therefore, log the catalog id and the active file scope rather than claiming a model echo that you did not observe. If your installed version exposes a model indicator, compare it with the same id. If it does not, this three-part check is the honest boundary of what the documented behavior supports.

Settings scope and precedence

Claude Code reads user settings at ~/.claude/settings.json, shared project settings at .claude/settings.json, project-local settings at .claude/settings.local.json, and organization-managed settings from managed sources. User settings apply across projects on your machine. Shared project settings can travel with a repository. Project-local settings are for your own one-project override and are normally kept out of version control when Claude Code creates them. Managed settings can win over local values.

A correct edit can appear ineffective when another source has higher precedence. After every change, close and reopen the terminal, run /status, and check the source named there. If an organization-managed value wins, treat it as a policy boundary and ask the administrator; do not keep overwriting local files.

Reproducible operator workflow

Use this sequence for a new workstation or a changed model:

Run claude –version and save only the version string.
Assign COMETAPI_API_HOST using the interactive read in Direct answer, call GET /api/models, and select a currently listed Claude id.
Create or update the intended settings file with the documented host, a local credential reference, and the selected model id.
Close and reopen the terminal so the process cannot retain an old environment.
Start claude in a disposable project and submit a short prompt such as “Reply with exactly route-ok.”
Run /status, verify its setting source, and inspect the active file’s model value against the catalog record.
Write a sanitized record with settings_scope, base_url_host, model_id, tool_version, result, status_class, latency_ms, and error_class.
Only after those checks pass should you allow repository edits, tools, or long prompts.

A successful run has a version, a reachable catalog, a known model id, an active settings source, and a response. If any one is missing, stop at that layer and troubleshoot it before changing prompts or models. A compact success record can look like this:

{
  "result": "success",
  "error_class": null,
  "status_class": "2xx",
  "settings_scope": "user",
  "base_url_host": "api.cometapi.com",
  "model_id": "[MODEL_ID_FROM_CATALOG]",
  "tool_version": "[VERSION]",
  "latency_ms": 0
}

For an error path, keep the same fields, change result to error, classify the failure, and omit prompts and response bodies. This makes repeated runs comparable without turning the log into a source-code or credential disclosure.

Failure modes

The command is missing or the version check fails

The installer may not have completed, or claude may not be on the shell path. Re-run the official installer for your operating system from the linked integration guide, open a new terminal, and repeat claude –version. Do not troubleshoot CometAPI authentication until the executable check passes.

The settings file is ignored

Check the platform-specific path, valid JSON syntax, and the scope you intended. Claude Code does not create every settings file during installation, so an absent file is not proof of a failed install. The integration guide recommends restarting the terminal. If onboarding still blocks startup, its documented fallback is a .claude.json file containing the onboarding-complete flag; add only that non-secret setting and restart.

Inspect the JSON for stray commas, wrong quotes, or a value that was never loaded into the process. Confirm that the variable name is exactly ANTHROPIC_AUTH_TOKEN and that its value is available to the same user and shell that starts Claude Code. If official credentials are cached, the CometAPI guide says to run /logout inside Claude Code, close it, and restart. Never attach the real value to support; provide a timestamp, tool version, settings scope, base host, status class, latency, and a redacted error category instead.

The model is rejected or unavailable

Run the public catalog request again. Availability changes, and a stale id can look like an authentication or routing problem. Compare the requested id with the catalog record’s current provider and capability metadata. If the id is absent, choose another listed Claude model or stop and confirm account access. Do not silently change the task to a different model family. If the active settings file still has the old id, update it and repeat the restart and /status checks.

The catalog request fails before Claude Code starts

Confirm that COMETAPI_API_HOST was exported in the same shell and that the host was copied exactly as documented. A proxy, DNS policy, certificate interception, or egress firewall can block the catalog independently of Claude Code. Capture only the status class, timing, operating-system family, and error category. Because the catalog is public, do not add an authorization header just to make this diagnostic call.

/status says offline

The integration guide notes that Claude Code checks connectivity through Google. An offline status therefore describes that connectivity check and does not by itself prove that CometAPI is unavailable. Run the harmless prompt separately, capture its result without content, and troubleshoot general network policy if both checks fail.

Fetch or web browsing fails inside Claude Code

The guide warns that Claude Code’s Fetch feature calls Anthropic’s native service first and may require direct internet access. A Fetch failure can coexist with a working CometAPI coding route. Keep the paths separate in the incident record: feature=fetch versus feature=completion, plus status class and latency, with no prompt or credential data.

A shared project file leaks a credential

If a secret was committed, stop using it, rotate it through the account’s normal controls, and remove it from future examples. Move the local value to a user or project-local scope and add the file to the appropriate ignore rules. For prevention patterns, use credential redaction patterns for CometAPI tutorial snippets .

FAQ

Should I set the base URL to a versioned path?

For Claude Code, follow the integration guide’s exact host value. A raw client or another SDK may document a versioned endpoint for its own request path; do not transfer that path into Claude Code without checking the tool-specific guide.

How do I choose a model without making the tutorial stale?

Call GET /api/models immediately before the test, using the public endpoint described in the CometAPI model catalog reference . Find the Claude-family record, record its provider and exact id, and place that id in the settings model key. The catalog is public and its records include metadata useful for capability checks. Avoid hard-coding an id in automation unless you also have a documented refresh policy.

Can I commit .claude/settings.json?

Commit only non-secret, team-wide settings. The Claude Code settings reference distinguishes shared project settings from project-local settings. A model id can be a reasonable shared choice when the team agrees, but keep the personal credential out of the committed file and document the local loading procedure instead.

Does /status prove that CometAPI handled the request?

It confirms useful settings-source information, but the harmless prompt is the route check. Treat the version check, catalog check, settings-source check, active model value, and response as separate observations. Do not infer a server-side model echo from /status unless your installed version actually displays one.

What should I send support when the route fails?

Send a timestamp, tool version, operating-system family, settings scope, base host, model id, status class, latency, and a short error category. Redact the key, prompt, repository paths, and response body. This gives an operator enough context to reproduce the failure without turning the report into a credential or source-code disclosure.

Reader next step

Open a disposable test project and run the workflow in order: claude –version, the public model-catalog request, a local settings check, /status, and one short prompt. Confirm that the active file contains the exact model id you just read from the catalog. If the response succeeds, repeat the same test after selecting the model you plan to use for real work. Then review the CometAPI model-catalog validation checklist and the local key-boundary guide before sharing the setup with a teammate. The goal is a repeatable terminal session whose model, route, and settings scope are known while the credential remains private.