docs(secrets): add Bitwarden Secrets exec resolver example

docs/gateway/secrets.md

@@ -213,6 +213,39 @@ Optional per-id errors:
 }
 ```
 
+### Bitwarden Secrets (BWS)
+
+This example uses a small wrapper script that implements the exec provider protocol and calls the Bitwarden Secrets CLI (`bws`) once per batch.
+
+- Script: `scripts/secrets/openclaw-bws-resolver`
+- `bws` must be installed and authenticated via `BWS_ACCESS_TOKEN`
+
+```json5
+{
+  secrets: {
+    providers: {
+      bws: {
+        source: "exec",
+        // Point this at wherever you install the resolver.
+        command: "/usr/local/bin/openclaw-bws-resolver",
+        args: [],
+        passEnv: ["BWS_ACCESS_TOKEN", "PATH"],
+        jsonOnly: true,
+      },
+    },
+  },
+  models: {
+    providers: {
+      openai: {
+        baseUrl: "https://api.openai.com/v1",
+        models: [{ id: "gpt-5", name: "gpt-5" }],
+        apiKey: { source: "exec", provider: "bws", id: "OPENAI_API_KEY" },
+      },
+    },
+  },
+}
+```
+
 ### `sops`
 
 ```json5

scripts/secrets/openclaw-bws-resolver

@@ -0,0 +1,56 @@
+#!/usr/bin/env node
+//
+// OpenClaw SecretRef exec resolver for Bitwarden Secrets (bws).
+// Protocol v1: reads JSON from stdin, returns JSON on stdout.
+//
+
+const { execFileSync } = require("child_process");
+
+const BWS = "/usr/local/bin/bws";
+
+async function main() {
+  let input = "";
+  for await (const chunk of process.stdin) input += chunk;
+
+  const req = JSON.parse(input);
+  if (req.protocolVersion !== 1) {
+    process.stderr.write(`unsupported protocol version: ${req.protocolVersion}\n`);
+    process.exit(1);
+  }
+
+  const ids = req.ids || [];
+  if (ids.length === 0) {
+    process.stdout.write(JSON.stringify({ protocolVersion: 1, values: {} }));
+    return;
+  }
+
+  let secrets;
+  try {
+    const raw = execFileSync(BWS, ["secret", "list"], {
+      env: { BWS_ACCESS_TOKEN: process.env.BWS_ACCESS_TOKEN, PATH: process.env.PATH || "" },
+      timeout: 15000,
+      maxBuffer: 1024 * 1024,
+    });
+    secrets = JSON.parse(raw.toString());
+  } catch (err) {
+    process.stderr.write(`bws secret list failed: ${err.message}\n`);
+    process.exit(1);
+  }
+
+  const keyMap = {};
+  for (const s of secrets) keyMap[s.key] = s.value;
+
+  const values = {};
+  const errors = {};
+  for (const id of ids) {
+    if (id in keyMap) values[id] = keyMap[id];
+    else errors[id] = { message: `secret key "${id}" not found in BWS` };
+  }
+
+  process.stdout.write(JSON.stringify({ protocolVersion: 1, values, errors }));
+}
+
+main().catch((err) => {
+  process.stderr.write(`resolver error: ${err.message}\n`);
+  process.exit(1);
+});