diff --git a/src/channels/AGENTS.md b/src/channels/AGENTS.md
index 7aee546fa1b..616ee5c65a4 100644
--- a/src/channels/AGENTS.md
+++ b/src/channels/AGENTS.md
@@ -22,6 +22,22 @@ import from this tree directly.
   instead of direct imports from `src/channels/**`.
 - When a bundled or third-party channel needs a new seam, add a typed SDK
   contract or facade first.
+- Treat channel entrypoints such as `channel.ts`, `shared.ts`,
+  `channel.setup.ts`, `gateway.ts`, and `outbound.ts` as hot import paths. Do
+  not statically pull async-only surfaces like send, monitor, probe,
+  directory-live, setup/login flows, or large `runtime-api.ts` barrels into
+  those files unless startup truly needs them.
+- Prefer a small local seam such as `channel-api.ts`, `*.runtime.ts`, or
+  `*.runtime-api.ts` to keep heavy runtime code off the hot path.
+- Do not mix static and dynamic imports for the same heavy module family across
+  a channel boundary change. If the path should stay lazy, keep it lazy end to
+  end.
 - Remember that shared channel changes affect both built-in and extension
   channels. Check routing, pairing, allowlists, command gating, onboarding, and
   reply behavior across the full set.
+
+## Verification
+
+- If you touch hot channel entrypoints or lazy-loading seams, run `pnpm build`.
+- For bundled plugin channel changes that can affect startup/import cost, run:
+  `OPENCLAW_LOCAL_CHECK=0 node scripts/profile-extension-memory.mjs --extension <id> --skip-combined --concurrency 1`
diff --git a/src/gateway/protocol/AGENTS.md b/src/gateway/protocol/AGENTS.md
index 2293c7ab94f..e4e9183d6a7 100644
--- a/src/gateway/protocol/AGENTS.md
+++ b/src/gateway/protocol/AGENTS.md
@@ -23,3 +23,6 @@ nodes.
   in sync.
 - New Gateway methods, events, or payload fields should land through the typed
   protocol definitions here rather than ad hoc JSON shapes elsewhere.
+- Keep protocol modules data-first and acyclic. Do not route protocol exports
+  back through heavier gateway runtime or server-method helpers that make the
+  contract surface expensive or order-dependent at import time.
diff --git a/src/plugin-sdk/AGENTS.md b/src/plugin-sdk/AGENTS.md
index 39f6911f195..1603675eaea 100644
--- a/src/plugin-sdk/AGENTS.md
+++ b/src/plugin-sdk/AGENTS.md
@@ -26,6 +26,15 @@ can affect bundled plugins and third-party plugins.
 - Do not expose implementation convenience from `src/channels/**`,
   `src/agents/**`, `src/plugins/**`, or other internals unless you are
   intentionally promoting a supported public contract.
+- Keep public SDK entrypoints cheap at module load. If a helper is only needed
+  on async paths such as send, monitor, probe, directory-live, login, or setup,
+  prefer a narrow `*.runtime` subpath over re-exporting it through a broad SDK
+  barrel that hot channel entrypoints import on startup.
+- Keep SDK facades acyclic. Do not add back-edge re-exports that route a
+  lightweight contract file back through heavier policy or runtime modules.
+- Do not mix static and dynamic imports for the same runtime surface when
+  shaping SDK seams. If a surface must stay lazy, keep the eager side on a
+  light contract file and the deferred side on a dedicated runtime subpath.
 - Prefer `api.runtime` or a focused SDK facade over telling extensions to reach
   into host internals directly.
 - When core or tests need bundled plugin helpers, prefer the plugin package
@@ -33,6 +42,14 @@ can affect bundled plugins and third-party plugins.
   provider-named `src/plugin-sdk/<id>.ts` seam just to make core aware of a
   bundled channel's private helpers.
 
+## Verification
+
+- If you touch SDK seams that affect lazy loading, hot channel entrypoints, or
+  bundled plugin import topology, run `pnpm build`.
+- If the change can alter bundled channel startup cost, also run the isolated
+  entrypoint profiler for the affected plugin:
+  `OPENCLAW_LOCAL_CHECK=0 node scripts/profile-extension-memory.mjs --extension <id> --skip-combined --concurrency 1`
+
 ## Expanding The Boundary
 
 - Additive, backwards-compatible changes are the default.
diff --git a/src/plugins/AGENTS.md b/src/plugins/AGENTS.md
index c916638f272..efba8d85a2f 100644
--- a/src/plugins/AGENTS.md
+++ b/src/plugins/AGENTS.md
@@ -23,6 +23,12 @@ assembly, and contract enforcement.
 - Keep loader behavior aligned with the documented Plugin SDK and manifest
   contracts. Do not create private backdoors that bundled plugins can use but
   external plugins cannot.
+- Preserve laziness in discovery and activation flows. Loader, registry, and
+  public-artifact changes must not eagerly import bundled plugin runtime barrels
+  when metadata, light exports, or typed contracts are sufficient.
+- If a plugin exposes separate light and heavy runtime surfaces, keep discovery,
+  inventory, and setup-state checks on the light path until actual execution
+  needs the heavy module.
 - If a loader or registry change affects plugin authors, update the public SDK,
   docs, and contract tests instead of relying on incidental internals.
 - Do not normalize "plugin-owned" into "core-owned" by scattering direct reads
@@ -34,3 +40,11 @@ assembly, and contract enforcement.
 - Keep contract loading and contract tests on the dedicated bundled registry
   path. Do not make contract validation depend on activating providers through
   unrelated production resolution flows.
+
+## Verification
+
+- If you touch loader, registry, activation, or public-artifact code that can
+  change bundled plugin import fanout, run `pnpm build`.
+- If the change can alter bundled plugin startup cost, re-profile the affected
+  plugin entrypoint with:
+  `OPENCLAW_LOCAL_CHECK=0 node scripts/profile-extension-memory.mjs --extension <id> --skip-combined --concurrency 1`