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> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/nemoclaw/_mcp/server.

# Credential Storage

> Learn where NemoClaw stores credentials, what protections it applies, and how to inspect or rotate stored secrets.

NemoClaw does not persist provider credentials to host disk.
The OpenShell gateway is the only system of record for stored credentials.

When you provide a provider credential, either interactively during `nemohermes onboard` or with an environment variable, NemoClaw holds the value in memory only long enough to register it with the OpenShell gateway through `openshell provider create` or `openshell provider update`.
The gateway stores the credential and the OpenShell L7 proxy substitutes it into outbound requests at egress, so sandboxed agents see placeholders instead of the raw secret.

NemoClaw manages Hermes API credentials and provider credentials through the same OpenShell provider boundary.
NemoClaw recreates generated Hermes runtime files during rebuilds.
Those files should contain resolver placeholders, not live provider credentials.
For managed tools and messaging, NemoClaw keeps host-side auth in OpenShell providers or host brokers and writes placeholder values into `/sandbox/.hermes/config.yaml`, `/sandbox/.hermes/.env`, and process environment entries visible to the sandbox.
Hermes startup rejects raw secret-shaped values in those sandbox-visible surfaces.
The dashboard mirror at `/sandbox/.hermes/profiles/dashboard-home/.env` excludes `API_SERVER_KEY`.
The managed Hermes wrapper reads that token from `/sandbox/.hermes/.env` and supplies it only through the dashboard process environment.
Mirrored inference routing uses the OpenShell proxy rewrite sentinel instead of raw provider credentials.

## Where Credentials Live

Provider credentials live in the OpenShell gateway store.
List registered provider names with:

```bash
openshell provider list
```

Or use NemoClaw:

```bash
nemohermes credentials list
```

Both commands show the provider names registered with the gateway.
The CLI cannot read the values back.
OpenShell deliberately preserves this property.

## Web Search Credentials

Web search follows the same OpenShell provider boundary as inference and messaging credentials.
Hermes supports `TAVILY_API_KEY`.
NemoClaw registers the selected key in a sandbox-scoped provider named `<sandbox>-brave-search` or `<sandbox>-tavily-search` and writes `openshell:resolve:env:<KEY>` into the agent configuration.
During onboarding, NemoClaw also checks the live sandbox environment for the raw selected web search credential.
If the raw key is visible there, or if the sandbox does not return a valid isolation result, onboarding refuses to report the sandbox as ready.
Retry onboarding after checking sandbox health; recreate the sandbox if the isolation check still fails.

Hermes sends its Tavily placeholder in the JSON `api_key` field.
The `tavily` policy preset enables request-body credential rewriting so OpenShell replaces that body value at egress without exposing the raw key to Hermes.

Use a dedicated low-scope search key and keep the matching `brave` or `tavily` policy preset applied only while the sandbox needs web search.
Rerun onboarding when you change providers because the provider selection and credential attachment are part of the sandbox image.

NemoClaw still keeps non-secret operational state under `~/.nemoclaw/` (such as the sandbox registry).
That directory is created with mode `0700` and contains no credential material.

## Environment Variables Take Precedence

When a NemoClaw command needs a credential value during a single run (for example to forward it to an `openshell provider` registration), it reads from `process.env` first.
Use this precedence to:

* Prefix any command with the credential to override the gateway-stored value: `NVIDIA_INFERENCE_API_KEY=nvapi-... nemohermes onboard`.
* Use short-lived or rotated credentials in CI by exporting them once per pipeline run.
* Avoid registering credentials in the gateway entirely if the specific command supports environment-only use.

Managed MCP is an exception: `nemohermes <name> mcp add` always creates and attaches an OpenShell provider, and `--env KEY` supplies only the transient input value.
For that credential boundary, refer to [About Managed MCP Servers](../manage-sandboxes/mcp-servers/about-managed-mcp-servers).
Before an ordinary live-sandbox rebuild or forced host-side recovery changes managed MCP state, NemoClaw compares the credential keys for every provider attached to the sandbox.
If another provider supplies a credential key that a managed MCP server reserves, rebuild stops before it changes the managed provider attachment, generated policy, or agent adapter.
The collision check does not delete either provider or its stored credential value.
Forced host-side recovery repeats the check before sandbox deletion.
Detach only the conflicting provider from the affected sandbox:

```bash
openshell sandbox provider detach <sandbox-name> <provider-name>
```

This command keeps the provider and stored credential in OpenShell and does not change its attachments to other sandboxes.
Rerun the original rebuild command.
Do not run `nemohermes credentials reset <PROVIDER_NAME>` unless you intend to detach that provider from every sandbox and delete its stored credential from OpenShell.

When the host environment is empty, day-two operations such as `nemohermes <name> rebuild` and remote-provider updates can reuse the credential already registered with the OpenShell gateway.
Export the credential only when you want to create, replace, or rotate the stored provider value.
On the standard remote-provider path, an ordinary rebuild still requires the matching OpenShell provider entry.
If the sandbox registry points at one of these providers that is missing from OpenShell, `nemohermes <name> rebuild` stops before backup or delete even when you export the matching credential environment variable.
After a gateway replacement, the installer's validated prepared-backup recovery can make a narrow exception.
It can recreate a missing provider only when the provider name and credential variable exactly match NemoClaw's built-in remote-provider mapping and the mapped variable resolves to a nonempty value in the current host process.
A missing credential or a provider-to-credential mismatch stops recovery before backup or delete.
For any other missing-provider case, rerun `nemohermes onboard` or re-register the provider first.

## Onboarding Reads Credentials from Environment

`nemohermes onboard` reads credentials from the host environment, registers them with the OpenShell gateway, and creates the sandbox.

A typical onboarding invocation looks like:

```bash
NVIDIA_INFERENCE_API_KEY=nvapi-... \
    nemohermes onboard --name my-instance
```

## GitHub Tokens

NemoClaw never persists `GITHUB_TOKEN` itself.
When a private repo requires authentication, NemoClaw runs `gh auth token`, which returns whatever the GitHub CLI has stored.
NemoClaw does not depend on the storage backend.

The GitHub CLI prefers an OS keychain when one is reachable: macOS Keychain on macOS, Windows Credential Manager on Windows, and Linux Secret Service (libsecret + a running D-Bus session) on Linux.
On hosts where no keychain is reachable, such as CI runners, headless launches, WSL without a session bus, or macOS contexts where Keychain access is blocked, `gh auth login` falls back to a `gh`-managed file under `~/.config/gh/` with mode `0600`.
NemoClaw treats both backends identically.
`gh auth token` returns the value, and NemoClaw stages it in `process.env` for the current run only.

If `gh` is not installed or not logged in, NemoClaw prompts for a personal access token for that single run; the prompted value is held in process memory and is not written to host disk.
Run `gh auth login` if you want a persistent backing store (whichever one applies on your host) so future runs do not prompt.

## Migration From Earlier Releases

Earlier NemoClaw releases stored credentials as plaintext JSON in `~/.nemoclaw/credentials.json` with mode `0600`.
On first `nemohermes onboard` after upgrading, NemoClaw automatically:

1. Reads the legacy file.
2. Stages allowlisted credential values into `process.env` for the rest of the run.
3. Re-registers each value with the OpenShell gateway through the normal onboarding path.
4. Securely overwrites and deletes `~/.nemoclaw/credentials.json` only after every staged value has been verified as migrated to the gateway.

You see a one-line stderr notice the first time this happens.
Credential lookup paths such as rebuild also stage allowlisted legacy values so interrupted upgrades can keep working, but those staging-only paths do not delete the plaintext file because they cannot prove every legacy value was registered with the gateway.
If `~/.nemoclaw/credentials.json` remains after a rebuild or other credential lookup, run `nemohermes onboard` to complete the verified gateway migration and cleanup.

## Rotate or Remove a Stored Credential

To replace a stored value, rerun onboarding with the new value in your environment:

```bash
NVIDIA_INFERENCE_API_KEY=nvapi-new-value nemohermes onboard
```

To remove a credential from the gateway entirely:

```bash
nemohermes credentials reset <PROVIDER_NAME>
```

`<PROVIDER_NAME>` is the OpenShell provider name (run `nemohermes credentials list` first if you are not sure).
On the next run NemoClaw prompts again unless the credential is supplied through the environment.

## Security Recommendations

1. Prefer short-lived or low-scope provider credentials where the upstream service supports them.
2. Rotate keys after suspected exposure, machine transfer, or account changes.
3. Prefer environment variables for ephemeral automation rather than registering long-lived secrets in the gateway.
4. Do not copy any host-side NemoClaw state into container images, Git repositories, bug reports, or support bundles.
   Credentials no longer live on disk, but surrounding configuration may reveal which providers you have registered.
5. Keep your home directory private and owned by your user account.

## Related Files

For the broader sandbox security model and operational trade-offs, refer to [Security Best Practices](best-practices), [Architecture](../reference/architecture), and [About Managed MCP Servers](../manage-sandboxes/mcp-servers/about-managed-mcp-servers).