The circuit breaker for your AI agents.
See what every agent costs. Detect when one derails. Cut it off before the invoice arrives.
Start for free Connect in 5 minutes
If Tokenwarden does not save you more than it costs within 60 days, you pay nothing. The digital twin nets savings against the fee every month — the number is in the weekly report.
Others show what happened. Tokenwarden prevents what is happening right now.
Complete attributionEvery token belongs to an agent, a run, a project, an end customer. No “other”.
Diagnosis, not raw dataSix named findings with a euro amount and a concrete fix: idle loop, context bloat, cache blindness, wrong model, error storm, outlier.
Effective interventionFour levels — observe, warn, throttle, stop — per agent, per rule, per time of day. With a clean rejection so the agent can end gracefully.
Four ways to connect
| Path | Effort | Captures | Can intervene |
|---|---|---|---|
| A · Gateway/Proxy | One line: change the base URL | Everything exactly, incl. cache, latency, errors — Anthropic, OpenAI, Gemini, Bedrock | Yes |
| C · SDK (Python, Node), n8n node, Claude Code hook | Include a library | Step and tool level | Partly |
| D · Ingest API | Your own numbers via HTTP POST | What you send | No |
| B · Chrome extension | Install, sign in | Web UIs (claude.ai, ChatGPT, Gemini) — estimated | No |
Privacy is built in, not bolted on
No contentPrompts and answers are neither stored nor logged. Only counters, fingerprints, metadata.
Key pass-throughYour provider key is passed through and never stored.
Hosted in GermanyProcessing exclusively in the EU. Self-hosting with the same Compose file or on Kubernetes.