diff --git a/docs/VAULTWARDEN-SETUP.md b/docs/VAULTWARDEN-SETUP.md
index 75fca1c..d2cb1e9 100644
--- a/docs/VAULTWARDEN-SETUP.md
+++ b/docs/VAULTWARDEN-SETUP.md
@@ -24,11 +24,13 @@ access Vaultwarden, but those credentials can't be stored in Vaultwarden itself
 as the only copy.
 
 **Operator's role:**
+
 1. Create a Vaultwarden user account for the agent.
 2. Invite the user to the Clawdie organization with access to `agent-secrets`.
 3. Share the master password via a secure channel (file drop, not chat).
 
 **Agent's role:**
+
 1. Generate personal API key: Account Settings → Security → Keys → View API Key.
 2. Write `BW_CLIENTID` (starts with `user.`), `BW_CLIENTSECRET`, and
    `BW_PASSWORD` to a 0600 bootstrap file: `~/.config/vault-bootstrap.env`.
@@ -88,6 +90,7 @@ bw config server https://vault.smilepowered.org
 
 Generate your personal API key: Account Settings → Security → Keys → View API Key.
 You'll receive:
+
 - `BW_CLIENTID` (starts with `user.`)
 - `BW_CLIENTSECRET`
 
@@ -132,10 +135,64 @@ bw get item <item-id> --session "$BW_SESSION"
 bw lock
 ```
 
+## Runtime fetch: `clawdie-vault-fetch`
+
+The manual flow above is the operator/agent CLI path. For a host to pull its own
+provider keys **out of the box**, the image ships a small language-neutral
+helper, `clawdie-vault-fetch` (`/usr/local/bin/`), that the post-install setup
+flow shells out to and the live USB can run directly. It depends only on `bw` —
+no node module, no `jq`.
+
+### Item-naming convention (the contract)
+
+For a secret to be auto-fetchable, store it in `agent-secrets` as a **login item
+whose name is exactly the env var name**, with the value in the **password
+field**:
+
+| Item name            | Field    | Becomes                |
+| -------------------- | -------- | ---------------------- |
+| `ANTHROPIC_API_KEY`  | password | `ANTHROPIC_API_KEY=…`  |
+| `OPENAI_API_KEY`     | password | `OPENAI_API_KEY=…`     |
+| `OPENROUTER_API_KEY` | password | `OPENROUTER_API_KEY=…` |
+| `ZAI_API_KEY`        | password | `ZAI_API_KEY=…`        |
+
+The default key set mirrors clawdie-ai's `PROVIDER_KEY_BY_PROVIDER` (anthropic,
+openai, openrouter, zai, deepseek, gemini, groq). `bw get password <NAME>`
+returns the raw value, so no JSON parsing is involved.
+
+### Bootstrap drop (the one secret that can't live in the vault)
+
+The helper reads `~/.config/vault-bootstrap.env` (mode 0600) for the headless
+credentials — exactly the file from the [Bootstrap Flow](#bootstrap-flow) above:
+
+```sh
+BW_CLIENTID=user....
+BW_CLIENTSECRET=...
+BW_PASSWORD=<master-password>
+```
+
+**No bootstrap file → the helper exits cleanly and does nothing**, so a host with
+no vault access still uses the manual setup wizard. That is the floor; the vault
+fetch only ever adds.
+
+### Usage
+
+```sh
+clawdie-vault-fetch                    # print KEY=VALUE lines to stdout
+clawdie-vault-fetch --write-env FILE   # upsert results into FILE (0600), keys preserved
+clawdie-vault-fetch --bootstrap FILE   # explicit bootstrap env file
+clawdie-vault-fetch --keys "A B C"     # override the key-name list
+```
+
+Exit codes let a caller tell "skip" from "broken": `0` ran cleanly · `1` vault
+configured but login/unlock/fetch failed · `3` no bootstrap config (fall back to
+manual) · `4` `bw` not installed. The helper always `bw lock`s on exit and never
+logs secret values.
+
 ## Current items in agent-secrets
 
-| Name | Type | Purpose |
-|------|------|---------|
+| Name                 | Type  | Purpose                                                  |
+| -------------------- | ----- | -------------------------------------------------------- |
 | hermes-debby Forgejo | login | Hermes's code.smilepowered.org password (browser access) |
 
 ## Rules