mcp-gateway-guide

mcp-gateway-guide is a skill for Claude Code, Codex from nirholas/three.ws. It costs 61 tokens per session (919 once invoked), scanned A, original, Apache-2.0.

A guide to an open gateway that lets AI agents use tools across many blockchains. It covers activities such as token swaps, lending, staking, trading, contract deployment, market data, and agent payments.

In plain words
What is it for?
Use it to build agents that move assets between chains, interact with decentralised finance services, check markets or contracts, deploy contracts, and make supported payments.
Why use it?
It brings blockchain services behind one connection, so an agent does not need separate integrations for each service or network.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/nirholas/three.ws/mcp-gateway-guide
Any agent
npx skills add nirholas/three.ws --skill mcp-gateway-guide
Clone the repo
git clone --depth 1 https://github.com/nirholas/three.ws

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for mcp-gateway-guide

README.md
[![agentmods](https://agentmods.dev/badge/skills/nirholas/three.ws/mcp-gateway-guide.svg)](https://agentmods.dev/skills/nirholas/three.ws/mcp-gateway-guide)
Your own site
<a href="https://agentmods.dev/skills/nirholas/three.ws/mcp-gateway-guide"><img src="https://agentmods.dev/badge/skills/nirholas/three.ws/mcp-gateway-guide.svg" alt="Measured on agentmods" height="20"></a>
Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 919 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00061 $0.00919
Opus 5 $0.00030 $0.00460
Sonnet 5 $0.00012 $0.00184
Haiku 4.5 $0.00006 $0.00092

Measured yesterday against content hash c5338dbbe2c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mcp-gateway-guide scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -X POST https://mcp.giving/api/tools/swap \
data/skills/development/mcp-gateway-guide/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MCP Gateway Guide

modelcontextprotocol.name (mcp.giving) is the open MCP gateway where AI meets DeFi. It aggregates 1,100+ tools letting AI agents interact with 20+ blockchains through a single endpoint.

What It Provides

Category Tools Chains
Token Swaps DEX aggregation, best route All EVM + Solana
Cross-Chain Bridges Asset bridging 20+ chains
Staking Liquid staking, native staking ETH, SOL, BNB, MATIC
Lending Supply, borrow, repay Aave, Compound, Venus
Trading Spot, limit orders, DCA Multi-DEX
Deployment Contract deploy, verify All EVM
Market Data Prices, volume, TVL Global
Security Contract scan, honeypot check All EVM
Payments x402 agent-to-agent payments Base, Arbitrum

Architecture

AI Agent (Claude, GPT, etc.)
    │
    ▼
MCP Gateway (mcp.giving)
    │
    ├── Swap Router ──→ 1inch, 0x, Paraswap, Jupiter
    ├── Bridge Router ──→ Across, Stargate, Hop, Wormhole
    ├── Lending Router ──→ Aave, Compound, Venus, Spark
    ├── Staking Router ──→ Lido, Rocket Pool, Jito
    ├── Data Router ──→ CoinGecko, DeFi Llama, Dune
    ├── Security Router ──→ GoPlus, honeypot checks
    └── Payment Router ──→ x402 protocol

Connecting

As MCP Server

{
  "mcpServers": {
    "crypto-gateway": {
      "url": "https://mcp.giving/sse"
    }
  }
}

Via HTTP

curl -X POST https://mcp.giving/api/tools/swap \
  -H "Content-Type: application/json" \
  -d '{"chain": "arbitrum", "from": "USDC", "to": "ETH", "amount": "100"}'

x402 Agent Payments

The gateway supports HTTP 402 payments for premium tools. AI agents can autonomously pay for:

  • Advanced analytics queries
  • High-frequency price feeds
  • Premium security scans
  • Priority transaction submission

Payment flows through Sperax USDs on Arbitrum for auto-yield benefits — your payment balance earns 8-25% APY while waiting to be spent.

Read the full file on GitHub · 116 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 116 lines · 61 tokens per session scan A c5338dbbe2c5

Subscribe to this mod's changes

mcp-gateway-guide is a skill published in the GitHub repository nirholas/three.ws (110 stars, last pushed yesterday), licensed Apache-2.0. It adds 61 tokens to every session and 919 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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