hogswap-mcp
Pay any Algorand x402 invoice with any asset, plus DEX swap quotes and unsigned builds.
Should I use this
Quality & Safety
Findings (1)
- LOWTool 'get_balance' description lacks action verbin get_balance
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"hogswap-mcp": {
"command": "npx",
"args": [
"hogswap-mcp"
]
}
}
}Runnable packages
0.4.0stdioRemote endpoints
https://hogswap-v1.liquihog.dev/mcp/streamable-httpWhat it can do
Tool inventory
Tools (12)
🟢list_payable_assets
Assets accepted as payment inputs for pay_x402_invoice and credit top-ups (price-confidence gated; ALGO and USDC always included).
Input Schema
{
"type": "object",
"properties": {},
"title": "list_payable_assetsArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "list_payable_assetsOutput"
}🟢get_quote(asset_in, asset_out, amount, amount_out, sender, ...)
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.
Input Schema
{
"type": "object",
"properties": {
"asset_in": {
"title": "Asset In",
"type": "integer"
},
"asset_out": {
"title": "Asset Out",
"type": "integer"
},
"amount": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Amount"
},
"amount_out": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Amount Out"
},
"sender": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Sender"
},
"max_legs": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Max Legs"
},
"api_key": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Api Key"
}
},
"required": [
"asset_in",
"asset_out"
],
"title": "get_quoteArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "get_quoteOutput"
}🟡build_swap(quote_id, user_address, api_key)
Unsigned 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.
Input Schema
{
"type": "object",
"properties": {
"quote_id": {
"title": "Quote Id",
"type": "string"
},
"user_address": {
"title": "User Address",
"type": "string"
},
"api_key": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Api Key"
}
},
"required": [
"quote_id",
"user_address"
],
"title": "build_swapArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "build_swapOutput"
}🟡pay_x402_invoice(invoice, user_address, inputs, api_key)
Pay 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.
Input Schema
{
"type": "object",
"properties": {
"invoice": {
"additionalProperties": true,
"title": "Invoice",
"type": "object"
},
"user_address": {
"title": "User Address",
"type": "string"
},
"inputs": {
"items": {
"additionalProperties": true,
"type": "object"
},
"title": "Inputs",
"type": "array"
},
"api_key": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Api Key"
}
},
"required": [
"invoice",
"user_address",
"inputs"
],
"title": "pay_x402_invoiceArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "pay_x402_invoiceOutput"
}⚪register_agent(address)
Self-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.
Input Schema
{
"type": "object",
"properties": {
"address": {
"title": "Address",
"type": "string"
}
},
"required": [
"address"
],
"title": "register_agentArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "register_agentOutput"
}🟡verify_registration(address, challenge, signature_b64)
Self-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.
Input Schema
{
"type": "object",
"properties": {
"address": {
"title": "Address",
"type": "string"
},
"challenge": {
"title": "Challenge",
"type": "string"
},
"signature_b64": {
"title": "Signature B64",
"type": "string"
}
},
"required": [
"address",
"challenge",
"signature_b64"
],
"title": "verify_registrationArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "verify_registrationOutput"
}🟡get_credit_offer(usdc_micro, api_key)
Create 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.
Input Schema
{
"type": "object",
"properties": {
"usdc_micro": {
"title": "Usdc Micro",
"type": "integer"
},
"api_key": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Api Key"
}
},
"required": [
"usdc_micro"
],
"title": "get_credit_offerArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "get_credit_offerOutput"
}🟢get_balance(api_key)
Current HOGSWAP credit balance for your API key.
Input Schema
{
"type": "object",
"properties": {
"api_key": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Api Key"
}
},
"title": "get_balanceArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "get_balanceOutput"
}🟢value_lp_token(asset_id, amount)
Value 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.
Input Schema
{
"type": "object",
"properties": {
"asset_id": {
"title": "Asset Id",
"type": "integer"
},
"amount": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Amount"
}
},
"required": [
"asset_id"
],
"title": "value_lp_tokenArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "value_lp_tokenOutput"
}🟡set_watch(client_key, kind, asset_in, asset_out, amount_in, ...)
Register 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.
Input Schema
{
"type": "object",
"properties": {
"client_key": {
"title": "Client Key",
"type": "string"
},
"kind": {
"title": "Kind",
"type": "string"
},
"asset_in": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Asset In"
},
"asset_out": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Asset Out"
},
"amount_in": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Amount In"
},
"min_out": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Min Out"
},
"margin_bps": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Margin Bps"
},
"asset_id": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Asset Id"
},
"op": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Op"
},
"threshold_usd_micro": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Threshold Usd Micro"
},
"rearm_bps": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Rearm Bps"
},
"cooldown_s": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Cooldown S"
},
"ttl_s": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null,
"title": "Ttl S"
},
"api_key": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Api Key"
}
},
"required": [
"client_key",
"kind"
],
"title": "set_watchArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "set_watchOutput"
}🟢list_watches(api_key)
List 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.
Input Schema
{
"type": "object",
"properties": {
"api_key": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Api Key"
}
},
"title": "list_watchesArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "list_watchesOutput"
}🔴delete_watch(client_key, api_key)
Delete one of your watches by its client_key.
Input Schema
{
"type": "object",
"properties": {
"client_key": {
"title": "Client Key",
"type": "string"
},
"api_key": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"title": "Api Key"
}
},
"required": [
"client_key"
],
"title": "delete_watchArguments"
}Output Schema
{
"type": "object",
"properties": {
"result": {
"title": "Result",
"type": "string"
}
},
"required": [
"result"
],
"title": "delete_watchOutput"
}Community
Evidence