Server data from the Official MCP Registry
Pay any Algorand x402 invoice with any asset, plus DEX swap quotes and unsigned builds.
About
Pay any Algorand x402 invoice with any asset, plus DEX swap quotes and unsigned builds.
Remote endpoints: streamable-http: https://hogswap-v1.liquihog.dev/mcp/
Security Report
This MCP server is well-designed with strong security fundamentals for its purpose. Authentication is properly implemented via optional API keys, the codebase avoids dangerous patterns like key handling or code execution, and permissions align with its non-custodial Algorand DEX aggregation purpose. Minor code quality issues (broad exception handling, some input validation gaps) are present but do not introduce security vulnerabilities. Supply chain analysis found 3 known vulnerabilities in dependencies (0 critical, 3 high severity). Package verification found 1 issue.
5 files analyzed · 9 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: HOGSWAP_API_KEY
Environment variable: HOGSWAP_API_URL
How to Install & Connect
Available as Local & Remote
This plugin can run on your machine or connect to a hosted endpoint. during install.
Documentation
View on GitHubFrom the project's GitHub README.
hogswap-mcp
MCP server exposing HOGSWAP to AI
agents: DEX-aggregated quotes, unsigned swap builds, zero-human API-key
self-registration, and the star — pay_x402_invoice: pay any
Algorand-settled x402 invoice with any 1–4 assets you hold, via an
exact-out router swap. API reference:
hogswap-v1.liquihog.dev/reference.
Strictly non-custodial: every transaction-producing tool returns unsigned groups; you sign with your own wallet tooling and submit yourself. Never give any tool a mnemonic or private key.
Run (stdio)
npm install
HOGSWAP_API_KEY=hsk_... node src/index.mjs # key optional
Claude Code: claude mcp add hogswap -e HOGSWAP_API_KEY=hsk_... -- node <abs-path>/src/index.mjs
| Env | Meaning |
|---|---|
HOGSWAP_API_URL | API base (default https://hogswap-v1.liquihog.dev) |
HOGSWAP_API_KEY | hsk_ bearer key; self-issue via the register_agent / verify_registration tools |
Tools
Free (no key): list_payable_assets, get_quote, register_agent,
verify_registration.
🔑 Require a HOGSWAP API key (set HOGSWAP_API_KEY, or self-issue one
with register_agent → sign → verify_registration): build_swap,
pay_x402_invoice, get_credit_offer, get_balance. Without a key
these return an auth error, not a build.
pay_x402_invoice returns two groups (swap, then payment) — sign all
txns in one pass, submit the groups in order; the swap's on-chain
floor guarantees the payment is funded. A HOGSWAP credit top-up's 402
offer is itself an x402 invoice: feed its accepts[0] (with the
note nonce) straight into pay_x402_invoice to buy credits with
any asset.
Remote (no local process)
The same 8 tools are served over MCP Streamable HTTP at
https://hogswap-v1.liquihog.dev/mcp/ — hosted by the HOGSWAP API
itself, no local process needed. Use the trailing slash — the
bare /mcp 307-redirects to /mcp/, costing an extra round trip per
call. Point any remote-capable MCP client at it; pass your key as
Authorization: Bearer hsk_... (the Claude API connector's
authorization_token does exactly this).
Smoke tests
HOGSWAP_API_URL=http://127.0.0.1:8015 HOGSWAP_API_KEY=hsk_... \
SMOKE_PAY_TO=<any USDC-opted addr> node test/smoke.mjs # stdio
MCP_URL=http://127.0.0.1:8015/mcp HOGSWAP_API_KEY=hsk_... \
SMOKE_PAY_TO=<any USDC-opted addr> node test/smoke-remote.mjs # remote
Read-only + build-only; nothing is signed or broadcast.
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