# Credential Usage Tracking

> When a model is attached to a reusable credential, LiteLLM automatically injects the credential name as a tag on every request that uses that model.

- Skill: `tools-only/credential-usage-tracking` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add tools-only/credential-usage-tracking`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tools-only/credential-usage-tracking/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tools-only (https://skillmd.com/u/tools-only)
- Updated: 2026-09-29
- Page: https://skillmd.com/skills/tools-only/credential-usage-tracking

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# Credential Usage Tracking

When a model is attached to a [reusable credential](./ui_credentials.md), LiteLLM automatically injects the credential name as a tag on every request that uses that model. This means credential-level spend and usage are tracked with zero extra configuration.

## How It Works

When you attach a model to a reusable credential via `litellm_credential_name`, each request routed through that model is tagged `Credential: <name>` (for example, `Credential: xAI`). This tag flows into `DailyTagSpend` and appears in the **Tag** view on the Usage page, where you can filter spend and usage by credential.

If a model has no credential attached, behavior is unchanged—no credential tag is added.

## Viewing Credential Usage

In the Admin UI, go to **Usage → Tag** and look for tags with the `Credential: ` prefix. These represent aggregated spend and token usage across all requests that used that credential.

## Related Documentation

- [Adding LLM Credentials](./ui_credentials.md) - How to create and attach reusable credentials to models
- [Tag Budgets](./tag_budgets.md) - Setting spend limits on tags
- [Tag Routing](./tag_routing.md) - Routing requests based on tags