Web3 and blockchain for Codex

4,172 mods tagged Web3 and blockchain that install into Codex, measured the same four ways as everything else here: what each costs in tokens on every session, what a security scan found and why, whether it is the original, and what changed.

Also for Codex: anthropic · Git and workflow · React · Python · TypeScript · openai · android · docker · Localization · bun · nextjs · PostgreSQL

system-prompts

01

can1357/oh-my-pi

Skill Claude CodeCodex

Write system prompts, tool docs, and agent definitions. Project tag conventions + RFC 2119 keywords + dense compression. Use when authoring or editing any prompt the model reads.

not rated 30k +816 today A Snyk: pass 40 tokens original MIT

pydantic/pydantic-ai

Skill Claude CodeCodex

Build AI agents with Pydantic AI — tools, capabilities (including on-demand loading), structured output, streaming, testing, and multi-agent patterns. Use when the user mentions Pydantic AI, imports pydanticai, or asks to build an AI agent, add tools/capabilities, defer capability loading, stream output, define agents…

not rated 20k +39 changed 2d ago A Snyk: pass 85 tokens original MIT

webiny/webiny-js

Skill Claude CodeCodex

Creating Headless CMS content models via code using the ModelFactory pattern. Use this skill when the developer wants to create, modify, or understand content model definitions, define fields and validators, set up reference fields between models, configure field layouts (including nested layouts inside object or…

not rated 8.0k +1 today A 297 tokens

MystenLabs/sui

Skill Claude CodeCodex

Use when auditing, reviewing, or hunting for vulnerabilities in Move code on Sui. Applies equally to source code (.move files) and to disassembly of compiled bytecode (on-chain packages). A checklist of invariants whose VIOLATION causes exploitable bugs: access control & capabilities, struct abilities & type safety…

not rated 7.7k +2 yesterday A 174 tokens original Apache-2.0

agentboard

05

hyperspaceai/agi

Skill Claude CodeCodex

Post to and read from the A1 Agent Board — a public, auditable, permanent message board for AI agents. Use when the user asks to leave a message for future agents, check what other agents have posted, watch a topic, or share a finding with the agent community. Messages are cryptographically signed and permanent.

not rated 2.0k +4 changed today A 68 tokens original MIT

questflowai/investorskills

Skill Claude CodeCodex

Use when evaluating crypto through a Grayscale-style Crypto Sectors lens: sector taxonomy, FTSE/Grayscale index eligibility, fee/usage fundamentals, sector-share valuation, ETP/trust wrappers, and Zcash-style privacy-as-money theses.

not rated 1.8k +47 15d ago A 56 tokens original MIT

agent-kit

07

sendaifun/solana-agent-kit

MCP server Claude CodeCodexCursor +2

MCP server "agent-kit" as configured in sendaifun/solana-agent-kit. Runs /absolute/path/to/build/index.js with node. Needs 3 environment variables to run.

not rated 1.7k +2 3mo ago A tokens not measured original Apache-2.0

amethyst

08

vitorpamplona/amethyst

Skill Claude CodeCodex

Build customized Amethyst Nostr clients for Android. Fork, rebrand, customize, and distribute your own version.

not rated 1.6k yesterday C 0 tokens original MIT

starknet-js

09

starknet-io/starknet.js

Skill Claude CodeCodex

Use when writing or debugging JavaScript/TypeScript that interacts with Starknet through the starknet.js SDK — building Call objects or calldata, encoding/decoding Cairo types (felt252, u256, structs, arrays, spans, ByteArray, Option/Result/custom enums), or working with contracts, accounts, providers, transactions…

not rated 1.3k 2d ago A 79 tokens original MIT

adapter-author

10

DefiLlama/DefiLlama-Adapters

Skill Claude CodeCodex

Validates whether a DefiLlama request belongs in DefiLlama-Adapters, then helps coding agents create and validate TVL adapters when it does. Use when a user wants to add a new DefiLlama TVL protocol listing, check repo fit, create or fix a TVL adapter, choose adapter helpers or registries, run node test.js, prepare PR…

not rated 1.2k today A 103 tokens

solana-mcp-vybe

11

vybenetwork/solana-mcp-vybe

MCP server Claude CodeCodexCursor +2

MCP server "solana-mcp-vybe", hosted remotely at mcp.vybenetwork.xyz, as configured in vybenetwork/solana-mcp-vybe.

not rated 1.2k 13d ago A tokens not measured

bankr

12

BankrBot/skills

Skill Claude CodeCodex

AI-powered crypto trading agent, wallet API, and LLM gateway via natural language. Use when the user wants to trade crypto, trade tokenized stocks and ETFs (spot or leveraged), check portfolio balances (with PnL and NFTs), view token prices, search tokens, research token holders, transfer crypto, manage NFTs, use…

not rated 1.2k +1 changed 6d ago A Socket: passSnyk: fail 196 tokens

fizz

13

pashov/skills

Skill Claude CodeCodex

Generate Echidna/Medusa-compatible Solidity fuzz suites from Foundry or Hardhat projects. Trigger on "fizz", "generate fuzz suite", "build fuzz harness", "stateful fuzzing", "fuzzing harness", "property testing", and "invariant suite".

not rated 1.1k +11 1mo ago A 60 tokens original MIT

binance/binance-skills-hub

Skill Claude CodeCodex

Query Ondo tokenized US stock data on Binance Web3. Covers: supported stock token list, RWA metadata (company info, attestation reports), market and per-asset trading status (with corporate action codes for earnings, dividends, splits), real-time on-chain data (token price, holders, circulating supply, market cap), US…

not rated 1.0k +10 4d ago A Socket: passSnyk: warn 216 tokens

btc-5m-live

15

Novals83/5min-btc-polymarket

Skill Claude CodeCodex

Run and monitor BTC 5-minute Up/Down trading on Polymarket using momentum-near-close logic (time-left, BTC move, market skew), fixed/controlled sizing, optional micro-hedge, and one-shot or loop execution.

not rated 901 +150 4mo ago A 55 tokens

solana-dev

16

solana-foundation/solana-dev-skill

Skill Claude CodeCodex

Use when user asks to "build a Solana dapp", "write an Anchor program", "create a token", "debug Solana errors", "set up wallet connection", "test my Solana program", "fuzz my Solana program", "deploy to devnet", "send a v1 transaction", "support larger transactions", "fix maxSupportedTransactionVersion", or "explain…

not rated 560 +1 changed 3d ago A Socket: passSnyk: warn 250 tokens original MIT

base

17

Tommy-yw/RunbookHermes

Skill Claude CodeCodex

Query Base (Ethereum L2) blockchain data with USD pricing — wallet balances, token info, transaction details, gas analysis, contract inspection, whale detection, and live network stats. Uses Base RPC + CoinGecko. No API key required.

not rated 543 3mo ago A 51 tokens original MIT

agent-onboarding

18

Nunchi-trade/agent-cli

Skill Claude CodeCodex needs its repo

First-time setup — from zero to first trade on Hyperliquid.

not rated 517 +2 2mo ago A 17 tokens original MIT

solana-foundation/solana-com

Skill Claude CodeCodex

Discover, verify, security-screen, and maintain Solana wallet products using the canonical local registry in packages/ecosystem-data and current web research. Use when asked to refresh wallet data, find new Solana wallets, add or remove wallets, check wallets for scam or security concerns, audit wallet features or…

not rated 501 +2 2d ago A 96 tokens GPL-3.0

hyperledger-iroha/iroha

Skill Codex

Work against the SORA Minamoto mainnet through its deployed Torii MCP endpoint for live account, asset, alias, contract, governance, Musubi package-registry, and transaction workflows. Use when Codex needs to inspect Minamoto mainnet, verify or add https://minamoto.sora.org/v1/mcp, prefer the curated iroha. tool…

not rated 488 today A 110 tokens original Apache-2.0

cdump/evmole

Skill Codex

Analyze supplied deployed EVM runtime bytecode with EVMole or guide a separate application in integrating a published EVMole Rust, Go, Python, or JavaScript binding. Use for unverified-contract inspection, ABI reconstruction from runtime code, selector discovery, storage-access analysis, EVM control-flow inspection…

not rated 462 22d ago A 135 tokens original MIT

tevm

22

evmts/tevm

Skill Codex

Build, simulate, test, fork, and debug EVM transactions in TypeScript with tevm 1.0.0-rc.151. Use for in-process EVM scripts, typed Solidity imports, lazy mainnet or OP-stack forks, direct account and storage setup, viem-compatible contract actions, Vitest EVM tests, traces, and transaction simulation.

not rated 446 yesterday A 77 tokens original MIT

bountyforge

23

Gabson0x/bountyforge

Skill Claude CodeCodex

All-round bug bounty skill covering smart contract audits (EVM/Solidity, Move/Aptos, Solana, TRON), web/API security, CI/CD pipeline attacks, LLM/AI security, and professional report generation for HackerOne, Bugcrowd, Intigriti, and Immunefi. Full pipeline — recon, pre-hunt learning from disclosed reports…

not rated 409 +3 8d ago D 351 tokens

polyclaw

24

chainstacklabs/polyclaw

Skill Claude CodeCodex

Trade on Polymarket via split + CLOB execution. Browse markets, track positions with P&L, discover hedges via LLM. Polygon/Web3.

not rated 356 4mo ago A 37 tokens original Apache-2.0

At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: