feat: Phase 10 — EVM NFTs, Privy, Farcaster, Pyth EVM (89 → 93 skills)

.claude-plugin/marketplace.json

@@ -165,12 +165,24 @@
       "description": "ethers.js v6 TypeScript/JavaScript Ethereum library — Provider, Signer, Contract interaction, ABI encoding/decoding, event filters, ENS resolution, and BigNumber-to-bigint migration from v5. Covers JsonRpcProvider, BrowserProvider, Wallet, ContractFactory, and typed contract interfaces.",
       "category": "Dev Tools"
     },
+    {
+      "name": "evm-nfts",
+      "source": "./skills/evm-nfts",
+      "description": "ERC-721 and ERC-1155 NFT development patterns for EVM chains. Covers minting, metadata, royalties, marketplace integration with Seaport, and security pitfalls. Uses OpenZeppelin v5.6.1.",
+      "category": "NFT & Tokens"
+    },
     {
       "name": "evm-testing",
       "source": "./skills/evm-testing",
       "description": "Comprehensive testing patterns for EVM smart contracts. Covers unit tests, fuzz testing, invariant testing, fork testing, and gas optimization with Foundry and Hardhat. Focuses on patterns and techniques — not CLI usage or project setup.",
       "category": "Dev Tools"
     },
+    {
+      "name": "farcaster",
+      "source": "./skills/farcaster",
+      "description": "Onchain social protocol with Neynar API, Frames v2 Mini Apps, and transaction frames. Covers Snapchain architecture, FID registry on OP Mainnet, and Warpcast integration.",
+      "category": "Infrastructure"
+    },
     {
       "name": "foundry",
       "source": "./skills/foundry",
@@ -363,6 +375,12 @@
       "description": "Polygon ecosystem development — PoS chain deployment, zkEVM patterns, AggLayer interop, POL token migration, and bridging across Polygon chains.",
       "category": "L2 & Alt-L1"
     },
+    {
+      "name": "privy",
+      "source": "./skills/privy",
+      "description": "Embedded wallet SDK for dApps with social login, email, and passkey auth. Covers React SDK, server-side JWT verification, wallet management, and smart wallet integration. Acquired by Stripe (2025).",
+      "category": "Frontend"
+    },
     {
       "name": "pumpfun",
       "source": "./skills/pumpfun",
@@ -372,7 +390,13 @@
     {
       "name": "pyth",
       "source": "./skills/pyth",
-      "description": "Complete guide for Pyth Network - decentralized oracle providing real-time price feeds for DeFi. Covers price feed integration, confidence intervals, EMA prices, on-chain CPI, off-chain fetching, and streaming updates for Solana applications.",
+      "description": "Pyth Network oracle for Solana — decentralized real-time price feeds for DeFi. Covers Anchor CPI integration, confidence intervals, EMA prices, on-chain/off-chain fetching, and streaming updates. For EVM chains, see the pyth-evm skill.",
+      "category": "Oracles"
+    },
+    {
+      "name": "pyth-evm",
+      "source": "./skills/pyth-evm",
+      "description": "Pyth pull oracle integration for EVM chains. Covers price feed updates, Hermes API, confidence intervals, sponsored feeds, Express Relay for MEV-protected liquidations, and Solidity/TypeScript patterns.",
       "category": "Oracles"
     },
     {

skills/chainlink/SKILL.md

@@ -594,6 +594,18 @@ function getSafePrice(AggregatorV3Interface feed) internal view returns (uint256
 - Always allowlist source chains and sender addresses on your receiver contract. Without this, anyone on any supported chain can send messages to your contract.
 - Handle message failures gracefully. If `_ccipReceive` reverts, the message can be manually executed later, but your contract should not end up in an inconsistent state from partial execution.
 
+## Alternative Oracles
+
+For use cases where Chainlink's push model isn't optimal, consider these alternatives:
+
+**Pyth Network** (`pyth-evm` skill) — Pull oracle model where consumers fetch and submit price updates on-demand. Best for: sub-second price freshness (~400ms on Pythnet), confidence intervals (statistical uncertainty bounds), MEV-protected liquidations via Express Relay, and non-EVM chains (Solana, Sui, Aptos). Trade-off: consumers pay gas for price updates (~120-150K gas per feed).
+
+**When to use Chainlink vs Pyth:**
+- **Chainlink**: Zero-cost reads (DON sponsors updates), broadest EVM feed coverage (1000+), VRF/CCIP/Automation ecosystem, well-established data quality
+- **Pyth**: Sub-second freshness, confidence intervals, historical price verification, MEV protection, 50+ EVM chains + non-EVM
+
+See also: `redstone` skill for another pull oracle alternative.
+
 ## References
 
 - [Chainlink Price Feed Addresses](https://docs.chain.link/data-feeds/price-feeds/addresses)