docs: Add ecosystem directory for community projects

CONTRIBUTING.md

@@ -11,6 +11,7 @@ Welcome to the Regen Network Agentic Tokenomics & Governance System. This reposi
 5. [Repository Structure](#repository-structure)
 6. [Progressive Access Tiers](#progressive-access-tiers)
 7. [Getting Started](#getting-started)
+8. [List Your Project](#list-your-project)
 
 ---
 
@@ -209,6 +210,12 @@ Contributors can progress through tiers via:
 
 ---
 
+## List Your Project
+
+Building on the Regen agentic tokenomics framework? Add your project to the [`docs/ECOSYSTEM.md`](docs/ECOSYSTEM.md) directory by opening a PR. Include your repo link, a one-line description, and any relevant status info.
+
+---
+
 ## Questions?
 
 - Open a GitHub Discussion

README.md

@@ -175,6 +175,10 @@ regen-agentic-tokenomics/
     └── build-mechanism-index.mjs
 ```
 
+## Ecosystem
+
+See [`docs/ECOSYSTEM.md`](docs/ECOSYSTEM.md) for a directory of projects building on this framework.
+
 ## Contributing
 
 See [`docs/CONTRIBUTOR_NAV.md`](docs/CONTRIBUTOR_NAV.md) for where changes should land and how to keep PRs small and reviewable.

docs/ECOSYSTEM.md

@@ -0,0 +1,41 @@
+# Ecosystem Directory
+
+This repository (`regen-network/agentic-tokenomics`) is the **coordination layer** for Regen Network's agentic tokenomics and governance system — specifications, schemas, and mechanism designs for a 65-75% automated governance framework.
+
+Below are projects building on or alongside this framework. If you are working on something related, [add your project](#list-your-project).
+
+## Coordination Layer
+
+- **[regen-network/agentic-tokenomics](https://github.com/regen-network/agentic-tokenomics)** — This repo. Governance mechanism specs, token utility designs, agent persona definitions, and contributor coordination.
+
+## Core Stack
+
+The core development stack spans this repo plus three additional repositories with defined data flows and ownership boundaries. See [`architecture/STACK_MAP.md`](architecture/STACK_MAP.md) for the full diagram and routing guide.
+
+- **[regen-network/koi-research](https://github.com/regen-network/koi-research)** — Research artifacts, datasets, extractors, ontologies, and tooling.
+- **[gaiaaiagent/regen-ai-claude](https://github.com/gaiaaiagent/regen-ai-claude)** — Agent skills, Claude configurations, and MCP adapter interfaces.
+- **[gaiaaiagent/regen-heartbeat](https://github.com/gaiaaiagent/regen-heartbeat)** — Signal emission, digests, and validators. Continuous metabolization of Regen Network, RegenAI, and Regen Commons. Contains `.claude/characters` and `.claude/output-styles` configuration.
+
+## Community Projects
+
+- **[CShear/regen-compute-credits](https://github.com/CShear/regen-compute-credits)** — An MCP agent that funds verified ecological regeneration from AI compute usage via Regen Network. Associated with [bridge.eco](https://bridge.eco).
+  - Fork: [brawlaphant/regenerative-compute](https://github.com/brawlaphant/regenerative-compute) (unmerged)
+- **[Eco-Wealth/netnet](https://github.com/Eco-Wealth/netnet)** — An operator agent for paid execution and ecological proof. Ships conservative primitives first; autonomy is intentionally gated. v0.3.0 testing release includes Bridge.eco retirement orchestration, ecoToken verification links, and an agent-callable Carbon API.
+
+## Organizations
+
+- **[agent-ecowealth](https://github.com/agent-ecowealth)** — GitHub organization.
+
+## List Your Project
+
+Open a PR adding your entry to the **Community Projects** section above. Include:
+
+1. Repo link (GitHub `org/repo` format)
+2. One-line description of what the project does
+3. Any relevant version or status info
+
+Follow the [PR format](CONTRIBUTOR_NAV.md) used in this repo:
+
+- **Lands in:** `docs/`
+- **Changes:** Add `<project-name>` to ecosystem directory
+- **Validate:** docs-only