diff --git a/.github/workflows/check-contracts-abi.yml b/.github/workflows/check-contracts-abi.yml
new file mode 100644
index 0000000..d20778b
--- /dev/null
+++ b/.github/workflows/check-contracts-abi.yml
@@ -0,0 +1,86 @@
+name: Check ABI Up-to-Date
+
+on:
+  pull_request:
+    paths:
+      - "contracts/**"
+      - ".github/workflows/check-contracts-abi.yml"
+  push:
+    branches:
+      - dev
+      - main
+    paths:
+      - "contracts/**"
+      - ".github/workflows/check-contracts-abi.yml"
+
+jobs:
+  check-abi:
+    name: 🔍 Verify ABIs are up-to-date
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./contracts
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          package_json_file: contracts/package.json
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "24"
+          cache: "pnpm"
+          cache-dependency-path: contracts/pnpm-lock.yaml
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Compile contracts and generate ABIs
+        run: pnpm compile
+
+      - name: Check for ABI differences
+        run: |
+          if [ -n "$(git diff --name-only -- abi/)" ]; then
+            echo "::error::Generated ABIs do not match committed ABIs. Please run 'pnpm compile' in contracts/ and commit the updated ABI files."
+            echo ""
+            echo "Changed files:"
+            git diff --name-only -- abi/
+            echo ""
+            echo "Diff:"
+            git diff -- abi/
+            exit 1
+          fi
+
+          if [ -n "$(git ls-files --others --exclude-standard -- abi/)" ]; then
+            echo "::error::New ABI files were generated but not committed. Please run 'pnpm compile' in contracts/ and commit the new ABI files."
+            echo ""
+            echo "Untracked files:"
+            git ls-files --others --exclude-standard -- abi/
+            exit 1
+          fi
+
+          echo "✅ All ABIs are up-to-date."
+
+      - name: Summary
+        if: failure()
+        run: |
+          echo "## ❌ ABI Check Failed" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "The committed ABI files do not match what the contracts generate." >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "**To fix:** Run the following locally and commit the changes:" >> $GITHUB_STEP_SUMMARY
+          echo '```bash' >> $GITHUB_STEP_SUMMARY
+          echo "cd contracts && pnpm compile" >> $GITHUB_STEP_SUMMARY
+          echo '```' >> $GITHUB_STEP_SUMMARY
+
+      - name: Summary (success)
+        if: success()
+        run: |
+          echo "## ✅ ABI Check Passed" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "All generated ABIs match the committed versions." >> $GITHUB_STEP_SUMMARY
diff --git a/.github/workflows/publish-collateral-abi.yml b/.github/workflows/publish-collateral-abi.yml
new file mode 100644
index 0000000..17d52a1
--- /dev/null
+++ b/.github/workflows/publish-collateral-abi.yml
@@ -0,0 +1,139 @@
+name: Publish @hashpower/collateral-abi
+
+# Publishes the ABI package to npm whenever the generated ABIs or the
+# deployments manifest change on main. Versioning is automatic and
+# semver-correct: the ABI *is* the package's public API, so CI diffs the
+# built ABI surface against the last published version to compute the bump
+# (removed/changed entry -> major, added entry -> minor, metadata -> patch)
+# and commits the new version back before publishing.
+#
+# Auth uses npm Trusted Publishing (OIDC) — no NPM_TOKEN secret.
+# NOTE: the very first release must be published manually
+# (`cd collateral-abi && pnpm build && npm publish --access public`),
+# then configure this repo+workflow as a Trusted Publisher in the
+# package settings on npmjs.com. CI handles every release after that.
+
+on:
+  push:
+    branches:
+      # NOTE: publishing off `dev` while the repo operates there.
+      # At GA, change this to `main` (and update the `npm-publish`
+      # environment's deployment-branch rule to match) so npm only
+      # updates on mainline releases.
+      - dev
+    paths:
+      - "contracts/abi/**"
+      - "collateral-abi/**"
+      - ".github/workflows/publish-collateral-abi.yml"
+  # Manual runs from any branch for testing the pipeline
+  workflow_dispatch:
+
+permissions:
+  contents: write # push the automated version bump
+  id-token: write # npm provenance / trusted publishing
+
+concurrency:
+  group: publish-collateral-abi
+  cancel-in-progress: false
+
+jobs:
+  publish:
+    name: 📦 Build & publish to npm
+    runs-on: ubuntu-latest
+    # Must match the Trusted Publisher environment configured on npmjs.com
+    environment: npm-publish
+    defaults:
+      run:
+        working-directory: ./collateral-abi
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          package_json_file: collateral-abi/package.json
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "24"
+          registry-url: "https://registry.npmjs.org"
+          cache: "pnpm"
+          cache-dependency-path: collateral-abi/pnpm-lock.yaml
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build package
+        run: pnpm build
+
+      - name: Compute semver bump from ABI diff
+        id: bump
+        run: |
+          PKG=$(node -p "require('./package.json').name")
+          PUBLISHED=$(npm view "$PKG" version 2>/dev/null || echo "none")
+
+          if [ "$PUBLISHED" = "none" ]; then
+            echo "First publish — using version from package.json as-is"
+            echo "level=first" >> "$GITHUB_OUTPUT"
+            echo "version=$(node -p "require('./package.json').version")" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          # Fetch the published tarball and diff its ABI surface against the fresh build
+          TARBALL=$(npm pack "$PKG@$PUBLISHED" --silent | tail -1)
+          mkdir -p /tmp/published
+          tar -xzf "$TARBALL" -C /tmp/published
+          rm "$TARBALL"
+
+          LEVEL=$(node scripts/semver-diff.mjs /tmp/published/package .)
+          echo "Published: $PUBLISHED — ABI diff requires: $LEVEL"
+          echo "level=$LEVEL" >> "$GITHUB_OUTPUT"
+
+          if [ "$LEVEL" = "none" ]; then
+            echo "No ABI or metadata changes — skipping publish"
+            echo "version=$PUBLISHED" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          # Baseline on the published version, then apply the computed bump
+          npm version "$PUBLISHED" --no-git-tag-version --allow-same-version
+          npm version "$LEVEL" --no-git-tag-version
+          NEW=$(node -p "require('./package.json').version")
+
+          if ! git diff --quiet -- package.json; then
+            git config user.name "github-actions[bot]"
+            git config user.email "github-actions[bot]@users.noreply.github.com"
+            git add package.json
+            git commit -m "chore(collateral-abi): v$NEW ($LEVEL) [skip ci]"
+            git push
+          fi
+          echo "version=$NEW" >> "$GITHUB_OUTPUT"
+          echo "Version: $NEW ($LEVEL bump from $PUBLISHED)"
+
+      - name: Publish
+        if: steps.bump.outputs.level != 'none'
+        run: npm publish --access public --provenance
+
+      - name: Summary
+        if: steps.bump.outputs.level != 'none'
+        run: |
+          PKG=$(node -p "require('./package.json').name")
+          VERSION=$(node -p "require('./package.json').version")
+          echo "## 📦 Published $PKG@$VERSION" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "https://www.npmjs.com/package/$PKG/v/$VERSION" >> $GITHUB_STEP_SUMMARY
+
+      - name: Send Slack notification
+        if: always() && steps.bump.outputs.level != 'none' && steps.bump.outputs.level != ''
+        uses: ./.github/actions/slack-notify
+        with:
+          status: ${{ job.status }}
+          environment: "npm"
+          service_name: "@hashpower/collateral-abi"
+          version: ${{ steps.bump.outputs.version || 'unknown' }}
+          slack_webhook_url: ${{ secrets.SLACK_WEBHOOK_URL }}
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          additional_info: "${{ format('*Semver bump:* `{0}` • *Package:* <https://www.npmjs.com/package/@hashpower/collateral-abi/v/{1}|@hashpower/collateral-abi@{1}>', steps.bump.outputs.level, steps.bump.outputs.version) }}"
diff --git a/collateral-abi/.gitignore b/collateral-abi/.gitignore
new file mode 100644
index 0000000..3fc495e
--- /dev/null
+++ b/collateral-abi/.gitignore
@@ -0,0 +1,5 @@
+# Generated by scripts/build.mjs — source of truth is ../contracts/abi
+src/
+dist/
+json/
+node_modules/
diff --git a/collateral-abi/README.md b/collateral-abi/README.md
new file mode 100644
index 0000000..c6fb5ca
--- /dev/null
+++ b/collateral-abi/README.md
@@ -0,0 +1,40 @@
+# @hashpower/collateral-abi
+
+ABIs and deployment addresses for the Hashpower unified collateral system on Base:
+
+| Contract | Purpose |
+| --- | --- |
+| `CollateralVault` | Shared USDC custody — `deposit`, `withdraw` (IM-gated), `balanceOf` |
+| `PortfolioMarginEngine` | Cross-product portfolio margin — `computePortfolioIM/MM`, `isHealthy`, `canPlaceOrder` |
+| `Points` | Rewards ledger |
+
+Collateral is unified across all Hashpower trading venues (futures, perps): deposit once to the vault, trade everywhere. Withdrawals are gated by portfolio initial margin.
+
+## Usage
+
+```ts
+import { CollateralVaultAbi, PortfolioMarginEngineAbi } from "@hashpower/collateral-abi";
+import deployments from "@hashpower/collateral-abi/deployments.json" with { type: "json" };
+
+// "testnet" (Base Sepolia) or "mainnet" (Base)
+const env = process.env.HASHPOWER_ENV ?? "testnet";
+const { contracts } = deployments.environments[env];
+
+const im = await client.readContract({
+  address: contracts.PortfolioMarginEngine,
+  abi: PortfolioMarginEngineAbi,
+  functionName: "computePortfolioIM",
+  args: [account],
+});
+```
+
+Raw JSON ABIs (for subgraphs and non-TypeScript consumers) are available under `@hashpower/collateral-abi/json/<Contract>.json`.
+
+## How this package is built
+
+Contents are generated — do not edit by hand:
+
+- `src/` is copied from `../contracts/abi` (the Hardhat codegen output) by `scripts/build.mjs`, then compiled to `dist/`.
+- `deployments.json` is the canonical address manifest for this repo; it is updated when contracts are (re)deployed.
+
+Publishing happens automatically from CI when ABIs or the manifest change (see `.github/workflows/publish-collateral-abi.yml`).
diff --git a/collateral-abi/deployments.json b/collateral-abi/deployments.json
new file mode 100644
index 0000000..e12561f
--- /dev/null
+++ b/collateral-abi/deployments.json
@@ -0,0 +1,22 @@
+{
+  "package": "@hashpower/collateral-abi",
+  "environments": {
+    "testnet": {
+      "chainId": 84532,
+      "network": "base-sepolia",
+      "contracts": {
+        "CollateralVault": "0x54A79e2a5C60ACe37b280eBbCda51b4E903d25F0",
+        "PortfolioMarginEngine": "0x3899e429Ef47140eC46c6E23F04253C24F221b69",
+        "Points": "0x153F6cb4386d717AD94791E6Ee8ae37f80315972",
+        "CollateralToken": "0xDd15eED84065A58c9E9ff9E95fb996be0fff22AA"
+      },
+      "subgraphs": {}
+    },
+    "mainnet": {
+      "chainId": 8453,
+      "network": "base",
+      "contracts": {},
+      "subgraphs": {}
+    }
+  }
+}
diff --git a/collateral-abi/package.json b/collateral-abi/package.json
new file mode 100644
index 0000000..604d7f5
--- /dev/null
+++ b/collateral-abi/package.json
@@ -0,0 +1,39 @@
+{
+  "name": "@hashpower/collateral-abi",
+  "version": "1.0.0",
+  "description": "ABIs and deployment addresses for the Hashpower unified collateral system (CollateralVault, PortfolioMarginEngine, Points) on Base",
+  "license": "MIT",
+  "type": "module",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Lumerin-protocol/collateral-margin.git",
+    "directory": "collateral-abi"
+  },
+  "keywords": ["hashpower", "collateral", "margin", "vault", "abi", "base", "viem"],
+  "files": ["dist", "json", "deployments.json", "README.md"],
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js"
+    },
+    "./deployments.json": "./deployments.json",
+    "./json/*.json": "./json/*.json"
+  },
+  "scripts": {
+    "build": "node scripts/build.mjs && tsc -p tsconfig.json",
+    "clean": "rm -rf src dist json",
+    "prepublishOnly": "pnpm build"
+  },
+  "devDependencies": {
+    "typescript": "^5.3.3"
+  },
+  "engines": {
+    "node": ">=22"
+  },
+  "packageManager": "pnpm@10.28.1",
+  "publishConfig": {
+    "access": "public"
+  }
+}
diff --git a/collateral-abi/pnpm-lock.yaml b/collateral-abi/pnpm-lock.yaml
new file mode 100644
index 0000000..eb1820e
--- /dev/null
+++ b/collateral-abi/pnpm-lock.yaml
@@ -0,0 +1,24 @@
+lockfileVersion: '9.0'
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
+importers:
+
+  .:
+    devDependencies:
+      typescript:
+        specifier: ^5.3.3
+        version: 5.9.3
+
+packages:
+
+  typescript@5.9.3:
+    resolution: {integrity: sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==}
+    engines: {node: '>=14.17'}
+    hasBin: true
+
+snapshots:
+
+  typescript@5.9.3: {}
diff --git a/collateral-abi/scripts/build.mjs b/collateral-abi/scripts/build.mjs
new file mode 100644
index 0000000..041b1d2
--- /dev/null
+++ b/collateral-abi/scripts/build.mjs
@@ -0,0 +1,37 @@
+// Copies the codegen output from contracts/abi into this package:
+//   *.ts  -> src/   (compiled to dist/ by tsc)
+//   *.json -> json/ (shipped raw for non-TS consumers, e.g. subgraphs)
+// and generates src/index.ts re-exporting everything.
+import { copyFileSync, mkdirSync, readdirSync, rmSync, writeFileSync } from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const pkgRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+const abiDir = path.resolve(pkgRoot, "../contracts/abi");
+const srcDir = path.join(pkgRoot, "src");
+const jsonDir = path.join(pkgRoot, "json");
+
+// Test-only mocks are not part of the public package
+const EXCLUDE = new Set([]);
+
+rmSync(srcDir, { recursive: true, force: true });
+rmSync(jsonDir, { recursive: true, force: true });
+mkdirSync(srcDir, { recursive: true });
+mkdirSync(jsonDir, { recursive: true });
+
+const modules = [];
+for (const file of readdirSync(abiDir).sort()) {
+  const base = file.replace(/\.(ts|json)$/, "");
+  if (EXCLUDE.has(base)) continue;
+  if (file.endsWith(".ts")) {
+    copyFileSync(path.join(abiDir, file), path.join(srcDir, file));
+    modules.push(base);
+  } else if (file.endsWith(".json")) {
+    copyFileSync(path.join(abiDir, file), path.join(jsonDir, file));
+  }
+}
+
+const index = modules.map((name) => `export * from "./${name}.js";`).join("\n");
+writeFileSync(path.join(srcDir, "index.ts"), `${index}\n`);
+
+console.log(`Copied ${modules.length} ABI modules from contracts/abi`);
diff --git a/collateral-abi/scripts/semver-diff.mjs b/collateral-abi/scripts/semver-diff.mjs
new file mode 100644
index 0000000..0d5f263
--- /dev/null
+++ b/collateral-abi/scripts/semver-diff.mjs
@@ -0,0 +1,69 @@
+// Computes the required semver bump by diffing the ABI surface of the
+// last-published package against the freshly built one.
+//
+//   Usage: node scripts/semver-diff.mjs <publishedPkgRoot> <currentPkgRoot>
+//   Prints one of: major | minor | patch | none
+//
+// Rules — the ABI *is* the public API, so the level is computable:
+//   - ABI entry removed or modified, or a contract file removed  -> major
+//   - New ABI entry or new contract file                         -> minor
+//   - Only metadata changed (deployments.json, README, ...)      -> patch
+//   - Nothing changed                                            -> none
+import { existsSync, readFileSync, readdirSync } from "node:fs";
+import path from "node:path";
+
+const [publishedRoot, currentRoot] = process.argv.slice(2);
+if (!publishedRoot || !currentRoot) {
+  console.error("Usage: semver-diff.mjs <publishedPkgRoot> <currentPkgRoot>");
+  process.exit(1);
+}
+
+// Canonical stringify (sorted keys) so formatting differences don't matter
+function canon(value) {
+  if (Array.isArray(value)) return `[${value.map(canon).join(",")}]`;
+  if (value && typeof value === "object") {
+    const keys = Object.keys(value).sort();
+    return `{${keys.map((k) => `${JSON.stringify(k)}:${canon(value[k])}`).join(",")}}`;
+  }
+  return JSON.stringify(value);
+}
+
+const abiEntries = (file) => new Set(JSON.parse(readFileSync(file, "utf8")).map(canon));
+const listJson = (dir) => (existsSync(dir) ? readdirSync(dir).filter((f) => f.endsWith(".json")).sort() : []);
+
+const oldDir = path.join(publishedRoot, "json");
+const newDir = path.join(currentRoot, "json");
+const oldFiles = listJson(oldDir);
+const newFiles = listJson(newDir);
+
+let removedOrChanged = false;
+let added = false;
+
+for (const file of oldFiles) {
+  if (!newFiles.includes(file)) {
+    removedOrChanged = true;
+    continue;
+  }
+  const oldSet = abiEntries(path.join(oldDir, file));
+  const newSet = abiEntries(path.join(newDir, file));
+  for (const entry of oldSet) if (!newSet.has(entry)) removedOrChanged = true;
+  for (const entry of newSet) if (!oldSet.has(entry)) added = true;
+}
+for (const file of newFiles) {
+  if (!oldFiles.includes(file)) added = true;
+}
+
+if (removedOrChanged) {
+  console.log("major");
+} else if (added) {
+  console.log("minor");
+} else {
+  // ABI surface identical — check whether package metadata changed
+  const metaChanged = ["deployments.json", "README.md"].some((file) => {
+    const oldPath = path.join(publishedRoot, file);
+    const newPath = path.join(currentRoot, file);
+    if (!existsSync(oldPath) || !existsSync(newPath)) return true;
+    return readFileSync(oldPath, "utf8") !== readFileSync(newPath, "utf8");
+  });
+  console.log(metaChanged ? "patch" : "none");
+}
diff --git a/collateral-abi/tsconfig.json b/collateral-abi/tsconfig.json
new file mode 100644
index 0000000..ffca7cc
--- /dev/null
+++ b/collateral-abi/tsconfig.json
@@ -0,0 +1,13 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "strict": true,
+    "declaration": true,
+    "outDir": "dist",
+    "rootDir": "src",
+    "skipLibCheck": true
+  },
+  "include": ["src"]
+}