"A GitHub repository for agent guardrails" matching MCP servers:

An MCP server that exposes the Trading 212 API with a hard-enforced safety layer—including idempotency ledger, circuit breaker, and position limits—to enable safe live and paper trading through natural language.

Cross-chain cryptocurrency swaps via Chainflip. Get quotes, execute swaps, and track progress. No API key required to get started.

MCP server for Pacifica that turns natural language into risk-sized perpetual futures orders and enables a policy-governed autonomous trading entity.

Enables agents to purchase and use compute resources on Robinhood Chain via x402 payments. Provides tools for thinking, renting GPUs, checking balances, and viewing the compute menu.

MCP server that gives AI agents a Solana wallet with a capped, revocable token allowance from a user-owned vault, enforced on-chain by SPL Token delegations plus local guardrails, without exposing the owner's private key.

Remote MCP server for the BlinkCodes store: search a catalog of ~1000 gift cards, service top-ups and travel eSIMs, read a product's denominations and order requirements, and buy using USDC on Base over x402, no account and no browser. Hosted at https://blinkcodes.com/mcp this repository holds the schemas, docs and a stdio bridge image for clients that cannot open a remote connection.

Enables an AI agent to act as a merchant, selling catalog items and issuing USDC invoices with cross-chain payment support via Arcorapay.

Agent-Q is an MCP server that separates execution surfaces from signing authority, enabling secure Sui signing flows where the signing device holds keys and policy while requesters submit bounded signing requests through a local host process.

Enables AI agents to inspect the public NFH protocol corpus, verify census status, and prepare bounded Ethereum wallet intents for claims and non-custodial market actions while never signing or submitting transactions.

Enables policy-first trading safety checks by converting natural-language trading goals into visible decision packets, evaluating orders against guardrails, and staging bounded orders for Binance MCP confirmation without executing trades.

Enables AI agents to read and bid on a paid message slot on Solana, with enforced spend limits, dry-run proposals, and an append-only audit log for every write.

MCP gateway for AI agents to Robinhood Chain (Arcus DEX) tokenized US equities: quotes, multipliers, corporate actions, sectors. Read-only, keyless.

Enables AI agents to draft AP-style press releases from a product URL and publish them to a public newsroom page, or distribute them across a newswire to hundreds of news, TV and radio sites, with status tracking for wire orders. Paid calls are settled per request in USDC on Base via x402 from the user's own wallet, defaulting to quote-only mode with spend caps and confirmation tokens.

Deploys AI agents on-chain into the Metaplex Agent Registry on Solana, minting Core assets with EIP-8004 identity. Supports self-custodial signing via server keypair or external wallets, with devnet support for free rehearsal.

Provides AI agents read-only, keyless access to Hyperliquid market data, funding rates, account risk, and HyperEVM token transfers through MCP tools, with caching and rate limiting to protect upstream APIs.

Build AI trading agents on Eterna Hybrid Exchange (no-KYC perp DEX with flat 0.014%/0.035% fees). Works out of the box with fee estimation, venue comparison, setup guides and guarded agent prompts; add an Eterna token to bridge the official trading tools.

An MCP server that lets your AI coding agent (Claude Code, OpenClaw, Codex, Cursor, etc.) discover and pay on-chain agents registered on ERC-8004, using Coinbase's official x402 protocol. No smart account. No bundler. No relay. Just your EOA, an HTTPS request, and an automatic 402 → sign → retry flow.

Enables AI agents to act as providers or clients on the Nayori Bitcoin commerce marketplace on Stacks mainnet, including registering, finding and applying to jobs, submitting deliverables, and getting paid in sBTC.

Connects AI clients to a live autonomous Solana trading agent on Pump.fun, providing live signals, agent status, and trade history.

Analytics-only MCP gateway to dYdX v4. 22 read-only tools: market data, funding heatmap, verified trader PnL with deposit-adjusted metrics and identity reconciliation (phantom-data detector), leaderboards with farmer flags, liquidation cascade detection, OI anomaly alerts, cross-asset correlation/beta, CVD, ATR risk plans. Zero keys, zero setup, pip install and go.