diff --git a/README.md b/README.md
index 04c623c..90a79af 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,32 @@ In the Inca empire, chaski were the relay runners who carried quipus between
 stations. This one carries what the graph learned to the people and systems who
 need to act on it.
 
+## Stack overview
+
+<!-- stack-table:start -->
+
+The Quipu stack is built around a governed, bitemporal knowledge store: shared
+facts, decisions and work history your agents can query. Quipu can check writes
+against your rules, records where each fact came from, and answers what was true
+when.
+
+| tool | what it gives your agents |
+|---|---|
+| [tambo](https://github.com/scbrown/tambo) | 🧰 Agent Platform Toolkit - installs and configures the quipu stack |
+| [quipu](https://github.com/scbrown/quipu) | stores shared facts with provenance and history; can check writes against your rules |
+| [camayoc](https://github.com/scbrown/camayoc) | prepares knowledge and vocabulary for Quipu, with checks before it is admitted |
+| [quechua](https://github.com/scbrown/quechua) | shared vocabulary and shapes for interoperable knowledge |
+| [chaski](https://github.com/scbrown/chaski) | reacts to graph changes and delivers governed notifications |
+| [bobbin](https://github.com/scbrown/bobbin) | indexes your codebase and injects context from that index and Quipu knowledge |
+| [yupana](https://github.com/scbrown/yupana) | shows code impact and can read policies from Quipu to govern agent actions |
+| [desire-path](https://github.com/scbrown/desire-path) | turns agent mistakes into feature requests; works on its own without Quipu |
+| [seeds](https://github.com/scbrown/seeds) | a work item tracker backed by the Quipu knowledge base |
+| [shantytown](https://github.com/scbrown/shantytown) | runs crews of AI agents on work items, triggered by hand, on a schedule or by events; can share work and memory through Quipu |
+| [rikuy](https://github.com/scbrown/rikuy) | live brief: status, graphs, watches and signed decisions over Quipu |
+| [shuttle](https://github.com/scbrown/shuttle) | runs signed agent workflows and keeps their records in Quipu |
+
+<!-- stack-table:end -->
+
 ## What it does
 
 quipu records facts. chaski watches for facts that call for action, and acts: