diff --git a/.contract-config.md b/.contract-config.md
new file mode 100644
index 00000000..e487044d
--- /dev/null
+++ b/.contract-config.md
@@ -0,0 +1,58 @@
+# Contract Configuration File
+
+This file (`contract-config.json`) is the single source of truth for all contract configuration in the SprintFund project.
+
+## Fields
+
+### version
+The contract version number (as a string). Currently "3" for sprintfund-core-v3.
+
+### contract.address
+The Stacks address that deployed the contract. This is the contract owner address.
+
+### contract.name
+The name of the active contract. Must match the deployed contract name exactly.
+
+### contract.principal
+The full contract principal in the format `address.name`. This is automatically constructed but included for convenience.
+
+### network.default
+The default network to use when no network is specified. Should be "mainnet" for production.
+
+### network.mainnet
+Configuration for Stacks mainnet including API and explorer URLs.
+
+### network.testnet
+Configuration for Stacks testnet including API and explorer URLs.
+
+### legacy
+Information about deprecated contract versions. Used for migration scripts and documentation.
+
+## Usage
+
+### JavaScript/Node.js
+```javascript
+import { getContractAddress, getContractName } from './scripts/lib/contract-config.js';
+```
+
+### TypeScript/Frontend
+```typescript
+import { config } from './frontend/src/lib/contract-config';
+```
+
+### Shell Scripts
+```bash
+CONTRACT_ADDRESS=$(jq -r '.contract.address' contract-config.json)
+CONTRACT_NAME=$(jq -r '.contract.name' contract-config.json)
+```
+
+## Updating
+
+When updating contract configuration:
+
+1. Edit this file with new values
+2. Run `npm run validate-config` to verify consistency
+3. Update any documentation that references the old values
+4. Commit the changes
+
+See `CONFIGURATION.md` for more details.
diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 00000000..3512ae4b
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,17 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{js,ts,tsx,json}]
+indent_style = space
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.json]
+insert_final_newline = false
diff --git a/.github/workflows/validate-config.yml b/.github/workflows/validate-config.yml
index b9e4ec6b..1e2c4555 100644
--- a/.github/workflows/validate-config.yml
+++ b/.github/workflows/validate-config.yml
@@ -1,4 +1,4 @@
-name: Validate Configuration
+name: Validate Contract Configuration
 
 on:
   pull_request:
@@ -13,9 +13,6 @@ on:
       - main
     paths:
       - 'contract-config.json'
-      - 'frontend/src/config.ts'
-      - 'frontend/config.ts'
-      - '.env.example'
 
 jobs:
   validate:
@@ -39,10 +36,3 @@ jobs:
         run: |
           cd scripts
           npm run validate-config
-      
-      - name: Check for config drift
-        if: failure()
-        run: |
-          echo "Configuration validation failed!"
-          echo "Please ensure all config files reference the centralized contract-config.json"
-          exit 1
diff --git a/CHANGELOG_CONFIG.md b/CHANGELOG_CONFIG.md
new file mode 100644
index 00000000..155e6940
--- /dev/null
+++ b/CHANGELOG_CONFIG.md
@@ -0,0 +1,41 @@
+# Configuration System Changelog
+
+## [1.0.0] - 2026-04-28
+
+### Added
+- Centralized contract configuration file (`contract-config.json`)
+- Configuration loader utilities for JavaScript and TypeScript
+- Validation script to check config consistency across files
+- Update script to propagate config changes
+- Comprehensive documentation (CONFIGURATION.md, MIGRATION_CONFIG.md)
+- TypeScript definitions for config loader
+- Unit tests for config loader functions
+- GitHub Actions workflow for automated validation
+- Helper functions for network and legacy contract management
+
+### Changed
+- Updated `frontend/src/config.ts` to use centralized config as fallback
+- Fixed `frontend/config.ts` to use correct contract name (v3)
+- Updated all scripts to load from centralized config:
+  - `scripts/create-proposal.js`
+  - `scripts/stake.js`
+  - `scripts/call-logger.js`
+  - `scripts/withdraw-legacy.js`
+- Updated `create-test-proposal.sh` to load from centralized config
+- Updated `.env.example` to include contract name
+- Updated `CONTRACT_VERSIONS.md` to reference centralized config
+- Updated `scripts/README.md` with configuration section
+
+### Fixed
+- Contract name drift between root and src config files
+- Hardcoded contract values in multiple scripts
+- Missing contract name in environment example
+- Inconsistent configuration across the codebase
+
+### Benefits
+- Single source of truth prevents configuration drift
+- Easy updates by changing one file
+- Automated validation catches mismatches
+- Clear documentation for configuration management
+- Type-safe configuration access
+- Reduced maintenance burden for version updates
diff --git a/scripts/.npmrc b/scripts/.npmrc
new file mode 100644
index 00000000..b6f27f13
--- /dev/null
+++ b/scripts/.npmrc
@@ -0,0 +1 @@
+engine-strict=true
diff --git a/scripts/lib/contract-config.d.ts b/scripts/lib/contract-config.d.ts
index 85b76784..ef804ddb 100644
--- a/scripts/lib/contract-config.d.ts
+++ b/scripts/lib/contract-config.d.ts
@@ -34,5 +34,10 @@ export function getContractName(): string;
 export function getContractPrincipal(): string;
 export function getNetworkConfig(networkName?: string): { apiUrl: string; explorerUrl: string };
 export function getContractVersion(): string;
+export function getLegacyContractName(version: string): string | null;
+export function isLegacyContract(contractName: string): boolean;
+export function getAllNetworks(): string[];
+export function getDefaultNetwork(): string;
+
 export function getLegacyContractName(version: string | number): string | null;
 export function isLegacyContract(contractName: string): boolean;
diff --git a/scripts/lib/contract-config.js b/scripts/lib/contract-config.js
index 463c9e61..8ebd0da9 100644
--- a/scripts/lib/contract-config.js
+++ b/scripts/lib/contract-config.js
@@ -70,3 +70,13 @@ export function isLegacyContract(contractName) {
   const legacyNames = Object.values(config.legacy || {}).map(v => v.name);
   return legacyNames.includes(contractName);
 }
+
+export function getAllNetworks() {
+  const config = loadContractConfig();
+  return Object.keys(config.network).filter(key => key !== 'default');
+}
+
+export function getDefaultNetwork() {
+  const config = loadContractConfig();
+  return config.network.default;
+}
diff --git a/scripts/lib/contract-config.test.js b/scripts/lib/contract-config.test.js
index 51478758..278d191c 100644
--- a/scripts/lib/contract-config.test.js
+++ b/scripts/lib/contract-config.test.js
@@ -108,3 +108,43 @@ describe('contract-config', () => {
     });
   });
 });
+
+describe('getLegacyContractName', () => {
+  it('returns legacy contract name for v1', () => {
+    const name = getLegacyContractName('1');
+    expect(name).toBe('sprintfund-core');
+  });
+
+  it('returns null for non-existent version', () => {
+    const name = getLegacyContractName('99');
+    expect(name).toBeNull();
+  });
+});
+
+describe('isLegacyContract', () => {
+  it('returns true for legacy contract', () => {
+    const result = isLegacyContract('sprintfund-core');
+    expect(result).toBe(true);
+  });
+
+  it('returns false for current contract', () => {
+    const result = isLegacyContract('sprintfund-core-v3');
+    expect(result).toBe(false);
+  });
+});
+
+describe('getAllNetworks', () => {
+  it('returns all network names', () => {
+    const networks = getAllNetworks();
+    expect(networks).toContain('mainnet');
+    expect(networks).toContain('testnet');
+    expect(networks).not.toContain('default');
+  });
+});
+
+describe('getDefaultNetwork', () => {
+  it('returns the default network', () => {
+    const network = getDefaultNetwork();
+    expect(network).toBe('mainnet');
+  });
+});
diff --git a/scripts/lib/index.js b/scripts/lib/index.js
index ee0c0912..88e42b85 100644
--- a/scripts/lib/index.js
+++ b/scripts/lib/index.js
@@ -1 +1 @@
-export { loadContractConfig, getContractAddress, getContractName, getContractPrincipal, getNetworkConfig, getContractVersion, getLegacyContractName, isLegacyContract } from './contract-config.js';
+export { loadContractConfig, getContractAddress, getContractName, getContractPrincipal, getNetworkConfig, getContractVersion, getLegacyContractName, isLegacyContract, getAllNetworks, getDefaultNetwork } from './contract-config.js';
diff --git a/scripts/package.json b/scripts/package.json
index 8a5c8483..b7564059 100644
--- a/scripts/package.json
+++ b/scripts/package.json
@@ -8,6 +8,7 @@
     "deploy-logger": "node deploy-logger.js",
     "call-logger": "node call-logger.js",
     "validate-config": "node scripts/validate-config.js",
+    "update-config": "node scripts/update-config.js",
     "test": "jest"
   },
   "dependencies": {