Web3 and blockchain skills

cornerblue/aibtc-mcp-server-orphan

Skill Claude CodeCodex

Bitcoin L1 wallet for agents - check balances, send BTC, manage UTXOs. Extends to Stacks L2 (STX, DeFi) and Pillar smart wallets (sBTC yield).

gnyselcuk/Kirpyv3-mcp-server

Skill Claude CodeCodex

Connect to the KirpyV3 AI Trading Arena — a competitive platform where AI agents trade crypto (BTC, ETH, SOL) with paper money, post to a global arena chat, and compete on a live leaderboard. This skill enables you to register, monitor your bot, interact with the market, and participate in the arena.

teodorofodocrispin-cmyk/sentinel-public

Skill Claude CodeCodex

Pre-execution transaction safety check for autonomous AI agents — one capability of the SENTINEL trust oracle (sentinel-agent.dev). Before signing an on-chain transaction on Base, an agent calls SENTINEL and receives a SAFE / UNSAFE / UNKNOWN verdict, a SENTINEL Score (0-100, grade AAA-D), and an ed25519-signed…

augstentatious/proofpay-agent

Skill Claude CodeCodex

Create payment-gated invoices and release sealed deliverables.

manteclaw/base-l2-agent-kit-mcp

Skill Claude CodeCodex

MCP server providing Base L2 DeFi tools for AI agents.

devIykee/mcw

Skill Claude CodeCodex

Multi-Chain Wallet (MCW) agent skill for performing blockchain operations across Bitcoin (BTC), Ethereum (ETH), Solana (SOL), and Tron (TRX) in Testnet and Mainnet environments. Enables autonomous and interactive AI agents (Claude Code, Grok, Cursor, Gemini, OpenHands) to fetch addresses, inspect live balances…

tolgayayci/rail402

Skill Claude CodeCodex

Discover and pay for x402 APIs on Stellar from the command line. Use when an agent needs to find a paid API in the x402 Bazaar, pay for an API call with USDC on Stellar testnet, fund a testnet wallet, or look up an x402 settlement on the explorer — via the rail402 CLI.

playcrowns/crowns-mcp

Skill Claude CodeCodex

Medieval tournament strategy for autonomous agents. AI kingdoms share one arena for a few days with real USDC stakes - claim land, build, wage war, keep or break your word; at the closing gong the final table pays a guaranteed prize pool. No prescribed path to anything.

roclee2692/crypto-market-sentinel

Skill Codex

Evaluate BTC, ETH, or RENDER market moves with deterministic P0-P2 thresholds, cooldown, hysteresis, and stale-data fail-closed behavior, then prepare Hermes Feishu alerts. Use for market monitoring or anomaly alerts; not for trading or portfolio actions.

D-Kek/loot-agent-mcp

Skill Claude CodeCodex

You are playing LOOT on Robinhood Chain (4663) through the loot-agent-mcp tools. The game in one line: hold tokens through risk to mint loot boxes, play to earn keys, open boxes with keys, claim your pro rata share of the token's fee pot in ETH. Pots grow when the token trades. Selling burns your game position for the…

mohamedkuch/utilia-solana-agent

Skill Codex

Use Utilia's wallet-funded x402 client for live Solana mainnet priority fees, failed-transaction diagnosis, token-risk inspection, and unsigned transaction simulation. Trigger when an agent needs machine-readable Solana preflight or post-transaction evidence and can pay $0.002-$0.008 USDC per call without an API key.

GitSerge-crypto/aotrust-skills

Skill Claude CodeCodex

Issue a cryptographic proof (PDR) that a digital artifact existed at a specific time. Pay $0.01 USDC on Base via x402. Anchored daily to NEAR blockchain. Publicly verifiable. ONLY invoke when the user explicitly requests notarization or proof-of-existence for a specific artifact. This skill performs a paid external…

Tsubaki414/toolfi

Skill Claude CodeCodex

An OpenClaw skill that lets AI agents discover, publish, and pay for tools using testnet USDC on Base Sepolia. Think "app store for agent tools" with on-chain payment settlement.

armandocodecr/latam-ramp-kit

Skill Claude CodeCodex

Integrate or explain the LATAM Ramp Kit (@ramp-kit/core, @ramp-kit/react, @ramp-kit/server, @ramp-kit/mcp) — fiat on/off-ramps for Latin America on Stellar via Etherfuse and Manteca, covering BRL/PIX, MXN/SPEI, ARS and CLP deposits plus payouts across 11 countries (COP, PEN, GTQ, CRC, BOB, PUSD, PHP). Use when the…

hodlxxi/Universal-Bitcoin-Identity-Layer

Skill Claude CodeCodex

Read-only-by-default integration guide for HODLXXI / UBID Bitcoin-native identity discovery, OAuth2/OIDC metadata, LNURL-Auth boundaries, JWT verification guidance, and explicit operator-approved agent handoff.

jdhart81/viridis-agent-fleet

Skill Codex needs its repo

Connect an agent runtime to Viridis's remote Agent Market MCP and paid x402 v2 carbon and compliance services. Use when an operator wants to discover Viridis tools or work listings, inspect a free payment challenge, buy one deterministic analysis, or participate in signed agent-to-agent work without installing a…

moldy93/smard-x402-mcp

Skill Claude CodeCodex

Create paid requests against x402 paywalled HTTP or MCP endpoints. Use when you need to generate an X-PAYMENT header, test a paywalled API, or demonstrate payment flow with Base/USDC using the x402 client.

Codex-Data/skills

Skill Claude CodeCodex

Use when the user asks about token prices, charts, holders, trending tokens, pair data, prediction markets, or any on-chain analytics from Codex. Also use when building GraphQL queries against https://graph.codex.io/graphql. TRIGGERS: token price, token chart, trending tokens, pair data, holders, prediction markets…

averray-agent/agent

Skill Claude CodeCodex

Use Averray's MCP workflow to draft and fund a job from your own wallet, select an honest verifier path, and understand settlement, receipts, cancellation, and disputes.

Itr3k/axiom-relay

Skill Claude CodeCodex

Compare swap routes and prepare a non-custodial transaction when a task needs to exchange one token for another on Base.