diff --git a/docs/archive/planning/README.md b/docs/archive/planning/README.md
index 15223433..ae80f4c7 100644
--- a/docs/archive/planning/README.md
+++ b/docs/archive/planning/README.md
@@ -9,5 +9,6 @@
 ## Legacy plans and deferred stubs
 
 - [Legacy planning index](legacy/README.md) — unreferenced implementation plans, a superseded SSO setup record, and explicitly deferred design stubs.
+- [Archived Matrix/MACP proposals](matrix-macp/README.md) — historical draft communications and deployment RFCs for functionality not established by current source/tests.
 
 Use current package source, tests, audience guides, and approved control documents for present behavior and status.
diff --git a/docs/archive/planning/matrix-macp/README.md b/docs/archive/planning/matrix-macp/README.md
new file mode 100644
index 00000000..0363c0d6
--- /dev/null
+++ b/docs/archive/planning/matrix-macp/README.md
@@ -0,0 +1,10 @@
+# Archived Matrix/MACP proposals
+
+> **Status:** Historical draft proposals. These records moved byte-identically from migration quarantine on 2026-08-10 and have no implementation or operational authority.
+
+- [RFC-001: MACP Matrix-native communications](rfc-001-macp-matrix-native.md)
+- [RFC-002: install, configuration, and topology](rfc-002-install-config-topology.md)
+
+Current source and focused tests do not establish the proposed Matrix adapter, identity mapping, persistence, homeserver/appservice topology, or federation operations. See the canonical [channel protocol](../../../DEVELOPER-GUIDE/architecture/channel-protocol.md) for the implemented Discord boundary and explicit Matrix limitations.
+
+Do not use these archived RFCs as deployment instructions or as evidence that Matrix/MACP functionality shipped.
diff --git a/docs/_old_structure/rfcs/RFC-001-MACP-MATRIX-NATIVE.md b/docs/archive/planning/matrix-macp/rfc-001-macp-matrix-native.md
similarity index 100%
rename from docs/_old_structure/rfcs/RFC-001-MACP-MATRIX-NATIVE.md
rename to docs/archive/planning/matrix-macp/rfc-001-macp-matrix-native.md
diff --git a/docs/_old_structure/rfcs/RFC-002-INSTALL-CONFIG-TOPOLOGY.md b/docs/archive/planning/matrix-macp/rfc-002-install-config-topology.md
similarity index 100%
rename from docs/_old_structure/rfcs/RFC-002-INSTALL-CONFIG-TOPOLOGY.md
rename to docs/archive/planning/matrix-macp/rfc-002-install-config-topology.md
diff --git a/docs/scratchpads/DOCS-IA-002-catalog-audit.md b/docs/scratchpads/DOCS-IA-002-catalog-audit.md
index e2f59800..da86ddb6 100644
--- a/docs/scratchpads/DOCS-IA-002-catalog-audit.md
+++ b/docs/scratchpads/DOCS-IA-002-catalog-audit.md
@@ -89,6 +89,7 @@ Shared indexes, navigation, audit records, integration review, and final commits
 - [x] Archive the unreferenced five-file monorepo-consolidation planning bundle byte-identically with explicit historical boundaries.
 - [x] Archive ten unreferenced legacy plans/deferred stubs byte-identically; retain the live-test-coupled Agent Reflection PRD and authority-gated WebUI/Fleet draft in quarantine.
 - [x] Archive 94 unreferenced historical scratchpads byte-identically; retain 17 records coupled to control docs, tests/fixtures, mission/evidence records, or KBN-101.
+- [x] Archive the two unreferenced Matrix/MACP RFCs byte-identically as historical drafts, cross-referenced to the canonical unimplemented-Matrix boundary.
 
 ## Initial findings
 
@@ -113,6 +114,7 @@ Shared indexes, navigation, audit records, integration review, and final commits
 - The monorepo-consolidation brief, board review, and three work-package specifications had no live consumers or internal links. They moved byte-identically to `archive/planning/`; current package existence supports historical classification but does not prove every old acceptance criterion.
 - Ten additional unreferenced implementation plans, setup records, and deferred stubs moved byte-identically to `archive/planning/legacy/`. `agent-reflection-loop-PRD.md` was excluded because a MACP test names its intended canonical path; the WebUI/Fleet bridge draft was excluded because it remains authority-gated.
 - Of 111 quarantined scratchpads, 94 had no current path/name consumers and no coupled local Markdown links; they moved byte-identically to `archive/work-records/`. Seventeen remain quarantined with their control-document, source/test fixture, mission/evidence, or KBN-101 dependencies.
+- The two Matrix/MACP RFCs were explicitly draft, unreferenced, and link-free. They moved byte-identically under `archive/planning/matrix-macp/`; the archive index points to the canonical channel page that records Matrix as unimplemented.
 
 ## Method
 
@@ -173,3 +175,4 @@ Shared indexes, navigation, audit records, integration review, and final commits
 | Historical mission archive  | PASS — 11 completed/superseded records moved under `archive/missions/`, indexed, and two broken sibling links repaired                                                      |
 | Historical planning archive | PASS — five consolidation records plus ten legacy plans/stubs moved byte-identically under `archive/planning/`; hashes and zero-consumer scans verified                     |
 | Historical work records     | PASS — 94 unreferenced scratchpads moved byte-identically under `archive/work-records/`; 17 coupled records deliberately retained in quarantine                             |
+| Matrix/MACP draft RFCs      | PASS — two unreferenced, link-free drafts moved byte-identically under `archive/planning/matrix-macp/`; canonical Matrix limitation linked                                  |