docs: add Mintlify site configuration

docs.json

@@ -0,0 +1,63 @@
+{
+  "$schema": "https://mintlify.com/docs.json",
+  "theme": "mint",
+  "name": "OpenAgentCore",
+  "colors": {
+    "primary": "#2563EB"
+  },
+  "favicon": "/docs/assets/openagentcore-logo.svg",
+  "navigation": {
+    "groups": [
+      {
+        "group": "Get started",
+        "pages": [
+          "docs/getting-started/README",
+          "docs/getting-started/install",
+          "docs/getting-started/quickstart",
+          "docs/examples"
+        ]
+      },
+      {
+        "group": "Operate",
+        "pages": [
+          "docs/getting-started/install-options",
+          "docs/getting-started/nodes",
+          "docs/getting-started/self-hosted",
+          "docs/getting-started/operations",
+          "docs/configuration"
+        ]
+      },
+      {
+        "group": "API guides",
+        "pages": [
+          "docs/api/README",
+          "docs/api/public-agent-api",
+          "contracts/agents-api/admin-api",
+          "contracts/agents-api/machine-api",
+          "contracts/agents-api/harness-capabilities"
+        ]
+      },
+      {
+        "group": "Architecture and extensions",
+        "pages": [
+          "docs/concepts",
+          "docs/architecture",
+          "docs/runtime-protocol",
+          "docs/runtime-bootstrap",
+          "docs/sandbox-provider",
+          "contracts/agents-api/harness-onboarding",
+          "docs/development",
+          "CONTRIBUTING"
+        ]
+      }
+    ]
+  },
+  "navbar": {
+    "links": [
+      {
+        "label": "GitHub",
+        "href": "https://github.com/MiniMax-AI/OpenAgentCore"
+      }
+    ]
+  }
+}

docs/development.md

@@ -95,6 +95,8 @@ Fixture browser acceptance uses loopback ports 18092 and 4174. Select unused por
 
 ## Change documentation
 
+The repository-root `docs.json` configures the Mintlify site and references the existing Markdown sources. Connect Mintlify to the repository root on the default branch. Run `mint dev` from the repository root to preview the site and `mint validate` to check it before publishing. Install the CLI with `npm install -g mint`.
+
 Find the owning source in the [documentation ownership map](../CONTRIBUTING.md#documentation-ownership) and follow the [documentation rules](../AGENTS.md#documentation). Readers use the authored Markdown in the repository. Generated OpenAPI schemas and the Harness catalog have their own generators; see [Contract and schema rules](../CONTRIBUTING.md#contract-and-schema-rules).
 
 The distribution has an explicit documentation list in `scripts/core-distribution-manifest.py`. When you move a bundled file or change a heading, update its inbound links and run the [distribution documentation checks](maintainers.md#build-a-distribution).