list_payable_assets
Assets accepted as payment inputs for pay_x402_invoice and credit top-ups (price-confidence gated; ALGO and USDC always included).
Takes no parameters.

io.github.LiquiHogPublished by GitHub account LiquiHogv0.4.0Updated Oct 24, 2026
Pay any Algorand x402 invoice with any asset, plus DEX swap quotes and unsigned builds.
Algorand DEX swap quotes, unsigned swap builds and x402 invoice payment, plus credit and watch tools, for AI assistants.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/io.github.LiquiHog%2Fhogswap-mcp/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"hogswap": {
"type": "http",
"url": "https://hogswap-v1.liquihog.dev/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.
Building an app rather than an agent? Official SDKs:
hogswap-js-sdk (npm)
and hogswap-py-sdk (PyPI).
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.
Claude Code: claude mcp add hogswap -e HOGSWAP_API_KEY=hsk_... -- node <abs-path>/src/index.mjs
Free (no key): list_payable_assets, get_quote, register_agent,
verify_registration. get_quote takes optional max_legs (1–16)
to cap total route legs, splits included — for replaying the route
under your own resource budget.
🔑 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, plus the watch
tools set_watch / list_watches / delete_watch (standing
server-side price/target alerts — free of charge, but namespaced by
key). Without a key these return an auth error, not a build.
Watch fires are numbers-only hints — re-quote with get_quote when
one fires. From MCP, poll list_watches; outside MCP the server
pushes events over SSE at GET /watches/stream.
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.
The same 12 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).
Both default to the live API; set HOGSWAP_API_URL (stdio) or
MCP_URL (remote) to point them at another instance. Read-only +
build-only; nothing is signed or broadcast.
Source: README.md at commit 7d58fd8
Assets accepted as payment inputs for pay_x402_invoice and credit top-ups (price-confidence gated; ALGO and USDC always included).
Takes no parameters.
HOGSWAP swap quote across every Algorand DEX. Give amount (exact input) OR amount_out (exact output — minimum input is solved). Base units (µ); asset 0 = ALGO. Returns expected_out, route legs, and a quote_id for build_swap. expected_out is NET of the 5 bps routing fee; passing sender also returns router_fee_* fields and the wallet's HOG discount (hog_discount_pct, 100 = fully waived at 100 HOG). Optional sender enables HOG-holding fee discounts. Optional max_legs (1-16) caps TOTAL route legs, splits included — slightly worse price at size, 404 if nothing fits; forward (amount) quotes only.
amountsenderapi_keyasset_inrequiredmax_legsasset_outrequiredamount_outUnsigned transaction group for a get_quote quote_id. Sign every txn with your own wallet and submit as one group. NEVER pass mnemonics or private keys to any tool — signing happens in YOUR wallet, never here.
api_keyquote_idrequireduser_addressrequiredPay ANY Algorand-settled x402 invoice with any 1-4 routable assets you hold, even holding none of the demanded asset. Pass the `accepts` entry you picked as `invoice` (keep its note!) plus your inputs (single input with no amount = minimum solved). Returns UNSIGNED groups — sign all in one pass, submit IN ORDER (swap first; its on-chain floor guarantees the payment is funded; holding the asset already = one direct payment). HOGSWAP credit top-up offers feed this verbatim. EVM invoices unsupported (no bridge). NEVER pass mnemonics or private keys to any tool — signing happens in YOUR wallet, never here.
inputsrequiredapi_keyinvoicerequireduser_addressrequiredSelf-service HOGSWAP API key, step 1 of 2 — zero human. Returns a challenge; sign its exact bytes with the address's key in YOUR wallet tooling, then call verify_registration. NEVER pass mnemonics or private keys to any tool — signing happens in YOUR wallet, never here.
addressrequiredSelf-service key issuance, step 2 of 2. Returns your hsk_ key ONCE — store it yourself; it is not recoverable and this server does not keep it. Send it on later calls as Authorization: Bearer, X-API-Key, or the api_key argument.
addressrequiredchallengerequiredsignature_b64requiredCreate a credit top-up and get the x402 offer (HTTP 402 IS the payment instruction, not an error). Feed accepts[0] straight into pay_x402_invoice (keep the note nonce) to pay with any asset. Credits land ~1 block after payment.
api_keyusdc_microrequiredCurrent HOGSWAP credit balance for your API key.
api_keyValue a liquidity-provider position. Give the LP token's asset id (free, no key) and optionally `amount` in LP BASE units — what the wallet holds — for its USD value and the redeemable amount of each underlying. Also identifies the issuing pool/DEX (and STAMM tier). Per-unit figures are per WHOLE LP token. Values are a proportional-share redemption at analytics prices: no slippage, no exit fee, NOT a market quote — fields are null rather than guessed when supply or a price is missing, so check before reporting a number.
amountasset_idrequiredRegister a standing server-side watch (FREE, needs a key; idempotent upsert by client_key — re-registering replaces the watch and resets arming). kind='price': advisory µUSD threshold (asset_id, op gte/lte, threshold_usd_micro). kind='target': size-aware surrogate — would swapping amount_in of asset_in→asset_out deliver ≥ min_out? (margin_bps haircut, default 30; NO quote is run). Edge-triggered one-shot; re-arms after rearm_bps retreat + cooldown_s; ttl_s auto-expiry (default 86400) — refresh by re-upserting. Fires are numbers-only HINTS: re-quote with get_quote. Events push over SSE at GET /watches/stream (outside MCP); from MCP, poll list_watches.
opkindrequiredttl_sapi_keymin_outasset_idasset_inamount_inasset_outrearm_bpsclient_keyrequiredcooldown_s+2 moreList your key's active watches (spec + arming/fired state), quota, and latest event seq. Poll this from MCP to see fires; SSE at GET /watches/stream is the push alternative outside MCP.
api_keyDelete one of your watches by its client_key.
api_keyclient_keyrequired100% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
npm installHOGSWAP_API_KEY=hsk_... node src/index.mjs # key optionalHOGSWAP_API_KEY=hsk_... \SMOKE_PAY_TO=<any USDC-opted addr> node test/smoke.mjs # stdio
HOGSWAP_API_KEY=hsk_... \SMOKE_PAY_TO=<any USDC-opted addr> node test/smoke-remote.mjs # remote