xyz.apexfaucet/apex-arc

Official38 tools

by apexfaucet

Arc for agents: free USDC, ERC-8004 agent passports, watchtower, exit checks, x402 tools. 38 tools.

MCP Server: xyz.apexfaucet/apex-arc

The xyz.apexfaucet/apex-arc MCP server provides “Arc for agents” functionality focused on distributing free USDC via signature-based flow. It also includes an agent watchtower and supports “can-I-sell checks,” along with pools and bridges related capabilities.

🛠️ Key Features

Free USDC by signature
Agent watchtower
Can-I-sell checks
Pools
Bridges

🚀 Use Cases

Agent workflows that require free USDC distribution through signatures
Automated monitoring via an agent watchtower
Validating whether selling is allowed using can-I-sell checks
Interacting with pools and bridges in supported workflows

⚡ Developer Benefits

Integrates signature-based USDC access for agent operations
Provides reusable components for watchtower-style monitoring
Adds selling eligibility checks and supports pools/bridges

⚠️ Limitations

Only the capabilities listed in the provided description are supported (no additional tools or parameters were provided).

Captured live from the server via tools/list.

arc_faucet_claim

Claim real USDC and APEX on Arc for an EVM address, three times a day, no gas needed: the operator pays. Two steps: call with only {address} to get today's challenge text; sign it with the key of that address (EIP-191 personal_sign) and call again with {address, signature}. Same claim for everyone; cooldown and daily total are enforced by a contract with no withdraw function. The day's claims open in three parts (00:00, 08:00, 16:00 UTC) and one connection claims at most once every 8 hours; a refusal names the time. The reply includes nextClaimAt (unix seconds) and claimNumber.

Parameters2

address	string	required	Your Arc (EVM) address, 0x + 40 hex.
signature	string	optional	EIP-191 signature of the challenge text. Omit on the first call to receive the challenge.

Raw schema

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string",
      "description": "Your Arc (EVM) address, 0x + 40 hex."
    },
    "signature": {
      "type": "string",
      "description": "EIP-191 signature of the challenge text. Omit on the first call to receive the challenge."
    }
  },
  "required": [
    "address"
  ]
}

arc_faucet_status

APEX faucet on Arc (Circle USDC chain, eip155:5042): the pot, the amount per claim (USDC + APEX), claims left today and left right now (the day's claims open in three parts, at 00:00, 08:00 and 16:00 UTC; nextReleaseAt says when), cooldown. Every number is read from the faucet contract at call time; a failed read is reported as failed, never as zero. Free.

Parameters

No parameters.

Raw schema

{
  "type": "object"
}

arc_exit_check

If I buy this token on Arc, can I get out? For a token address or Uniswap v4 pool id on Arc: a real buy-then-sell round trip inside one eth_call through the pool hook (nothing spent) or, for ERC-20-USDC pools, both legs quoted. Returns whether the sell goes through, the round-trip cost, depth, and flags with reasons. The answer names its method. Free, one at a time (ten a minute).

Parameters2

query	string	required	Token address (0x + 40 hex) or v4 pool id (0x + 64 hex).
usdc	number	optional	Test size in USDC, default 1, max 1000.

Raw schema

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "description": "Token address (0x + 40 hex) or v4 pool id (0x + 64 hex)."
    },
    "usdc": {
      "type": "number",
      "description": "Test size in USDC, default 1, max 1000."
    }
  },
  "required": [
    "query"
  ]
}

arc_exit_check_bulk

PAYWALLED. Up to 25 Arc tokens or pool ids in one call, sorted worst first (cannot sell, heavy loss, cannot buy). Returns x402 payment instructions for /api/x402/arc-exit-check-bulk ($0.025, USDC on Arc, USDC on Solana or XNT). Single checks are free via arc_exit_check.

Parameters1

ids

array

required

Up to 25 token addresses or pool ids.

Raw schema

{
  "type": "object",
  "properties": {
    "ids": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Up to 25 token addresses or pool ids."
    }
  },
  "required": [
    "ids"
  ]
}

arc_agent_status

Does this Arc agent actually answer? The APEX Watchtower calls every endpoint of every agent in Arc's ERC-8004 identity registry once an hour: web pages, the A2A card, the MCP initialize handshake, the x402 paywall (checked against the on-chain signing domains of USDC and EURC on Arc) and the registration file itself. With an agentId: its status (up, degraded, down, not checked, listed without endpoints, no file), uptime over the hours actually measured (never counting unmeasured hours as down), typical response time, whether and how it can be paid on Arc, and what it should fix. Call it before you pay or hire an agent. Without an agentId: the counts for the whole registry. Free. Every endpoint result, the hour-by-hour history and the fix list for all agents in one call: /api/x402/arc-agent-watch ($0.004).

Parameters1

agentId

integer

optional

The agent id in the Arc ERC-8004 identity registry (0x8004A169FB4a3325136EB29fA0ceB6D2e539a432). Omit for the whole-registry counts.

Raw schema

{
  "type": "object",
  "properties": {
    "agentId": {
      "type": "integer",
      "description": "The agent id in the Arc ERC-8004 identity registry (0x8004A169FB4a3325136EB29fA0ceB6D2e539a432). Omit for the whole-registry counts."
    }
  }
}

arc_x402_stats

Who actually pays whom on Arc. Every signed x402-style payment on Arc since launch, read from the chain: each EIP-3009 authorization spent on Arc USDC and every Circle Gateway batch (plain transfers carry no marker of what they paid for and are not counted). Without an address: the totals, each facilitator (the address that submits settlements, named only where the name has a source) with its kind (direct; circular, where the same wallets pay and are paid; concentrated, one payer making most of the volume; self; or contract flow), each measured and shown apart from the direct totals, and the top sellers. With an address: what that address was paid, by how many distinct payers, through which facilitators, including Circle Gateway. Free. Every facilitator, seller and payer with the latest 1,000 settlements: /api/x402/arc-x402 ($0.004).

Parameters1

address

string

optional

Optional Arc address (0x + 40 hex) to look up as a seller or payer.

Raw schema

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string",
      "description": "Optional Arc address (0x + 40 hex) to look up as a seller or payer."
    }
  }
}

arc_pools

Arc Sniper Watch: new Uniswap v4 pools on Arc in the last 24 h, who bought each first and how many seconds after it opened, whether the first buyer sold straight back, USDC depth, flags with reasons, and a leaderboard of the fastest first buyers. Read from PoolManager events every five minutes. Free.

Parameters

No parameters.

Raw schema

{
  "type": "object"
}

arc_bridges

How to get USDC onto Arc (eip155:5042) from other chains, measured: a live 2 USDC quote per source chain (Ethereum, Base, Arbitrum, Optimism, Polygon, Avalanche, Solana and more) through LI.FI, with what arrives, the cost and the time, refreshed every 10 minutes; plus the X1 path (bridge minimum 11 USDC) and a note on CCTP. Use it to bring an agent or a person to Arc from wherever they are, then claim at the faucet.

Parameters

No parameters.

Raw schema

{
  "type": "object"
}

arc_grow

Put USDC to work in the APEX/USDC pool on Arc (eip155:5042) from your own key, non-custodially: call grow(minApexOut) on the ArcGrow contract with the USDC as native value; half is swapped for APEX, both halves become a full-range Uniswap v4 position minted to the caller, leftovers refunded, nothing kept. Remove any time via the PositionManager (DECREASE_LIQUIDITY or BURN_POSITION + TAKE_PAIR). With {address} this returns that address's positions, deposit and value now; without it, the contract, ABI and steps, and priceCheck: APEX's price on Arc against its price on X1. While they are more than 10% apart, do not deposit (half the USDC would buy APEX at that premium); our own page refuses then.

Parameters1

address

string

optional

Optional: an Arc address to read positions for.

Raw schema

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string",
      "description": "Optional: an Arc address to read positions for."
    }
  }
}

arc_touchstone

Touchstone on Arc: on-chain assays. An assay is a real buy-and-sell of a token in one transaction, reverted, with the verdict, round-trip cost and streak written as an event by the ArcAssay contract (0x417d200a4bd83a7e3911765114b1a27ad30f8c97). Read every pool's last assay and streak, or one token's. To make one, call assay(poolKey, 0) on the contract with value >= fee (0.03 USDC); the fee funds the faucet pot and the APEX vault.

Parameters1

token

string

optional

Optional token address to read assays for.

Raw schema

{
  "type": "object",
  "properties": {
    "token": {
      "type": "string",
      "description": "Optional token address to read assays for."
    }
  }
}

arc_passport_draft

Give an agent an ERC-8004 identity on Arc for free. Pass its name, what it does and where it can be reached; we write a correct registration file, host it, check that its endpoints answer, and return the unsigned register() transaction for Arc's identity registry. The wallet that sends it owns the agent from the first block (about 0.004 USDC of gas; one claim from arc_faucet_claim covers it). Then call arc_passport_confirm with the transaction hash. No key ever leaves your side.

Parameters4

name	string	required	2-48 characters
description	string	required	what the agent does, 10-400 characters
image	string	optional	optional https link to a picture
services	array	optional	optional endpoints: [{name: web\|A2A\|MCP\|x402\|OASF\|ENS\|DID\|email, endpoint}]

Raw schema

{
  "type": "object",
  "properties": {
    "name": {
      "type": "string",
      "description": "2-48 characters"
    },
    "description": {
      "type": "string",
      "description": "what the agent does, 10-400 characters"
    },
    "image": {
      "type": "string",
      "description": "optional https link to a picture"
    },
    "services": {
      "type": "array",
      "description": "optional endpoints: [{name: web|A2A|MCP|x402|OASF|ENS|DID|email, endpoint}]",
      "items": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          },
          "endpoint": {
            "type": "string"
          }
        }
      }
    }
  },
  "required": [
    "name",
    "description"
  ]
}

arc_passport_confirm

Finish a free Arc Agent Passport: after your wallet sent the register() transaction from arc_passport_draft, pass the draft slug and the transaction hash. We read the receipt on Arc (never the caller's word), fill the file with the new agentId and return the passport page, its share picture, the watchtower check-up and its tower in Arc City. Free.

Parameters2

slug	string	required	the 12-character id from arc_passport_draft
tx	string	required	0x hash of your register() transaction

Raw schema

{
  "type": "object",
  "properties": {
    "slug": {
      "type": "string",
      "description": "the 12-character id from arc_passport_draft"
    },
    "tx": {
      "type": "string",
      "description": "0x hash of your register() transaction"
    }
  },
  "required": [
    "slug",
    "tx"
  ]
}

arc_passport_buy

An agent buys its own ERC-8004 identity on Arc with a signature alone: $0.99 over x402, paid in USDC on Arc or Base. We host a correct registration file, mint the identity and hand it to the wallet that signed the payment, never to a typed address, and answer with the agentId and both transactions. Call once without `payment` to get the x402 terms, sign them, call again with `payment`. A refused input is never charged.

Parameters5

name	string	required
description	string	required
image	string	optional
services	array	optional
payment	string	optional	a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "name": {
      "type": "string"
    },
    "description": {
      "type": "string"
    },
    "image": {
      "type": "string"
    },
    "services": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          },
          "endpoint": {
            "type": "string"
          }
        }
      }
    },
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": [
    "name",
    "description"
  ]
}

arc_passport_status

Look up an Arc Agent Passport by agentId or draft slug: its registration file, owner, endpoints, whether it is active, and its links (passport page, share picture, hourly check-up, tower in Arc City). Free.

Parameters1

ref

string

required

agentId (a number) or the 12-character draft slug

Raw schema

{
  "type": "object",
  "properties": {
    "ref": {
      "type": "string",
      "description": "agentId (a number) or the 12-character draft slug"
    }
  },
  "required": [
    "ref"
  ]
}

arc_verdict

Should you buy this Arc pool? One call, one 0-100 answer from the hook's permissions, a real sell probe and what happened to earlier buyers, with every input shown. $0.004 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters3

pool	string	optional	Uniswap v4 pool id on Arc (pass this or token)
token	string	optional	token contract address on Arc (pass this or pool)
payment	string	optional	a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "pool": {
      "type": "string",
      "description": "Uniswap v4 pool id on Arc (pass this or token)"
    },
    "token": {
      "type": "string",
      "description": "token contract address on Arc (pass this or pool)"
    },
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": []
}

arc_counterparty

Who is this Arc address as a trader? How often it is the first buyer into a new pool, how fast it enters, USDC in versus out, positions it is stuck in, and the flags. Facts from the chain, never a label. $0.004 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters2

address	string	required	0x address on Arc
payment	string	optional	a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string",
      "description": "0x address on Arc"
    },
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": [
    "address"
  ]
}

arc_payment_check

Did that Arc payment really land? Payer, recipient, amount in both of Arc's transfer forms (the ERC-20 view and the native log), confirmation and gas, checked against what you expected. $0.003 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters4

tx	string	required	0x transaction hash on Arc
to	string	optional	optional expected recipient
expect	string	optional	optional expected amount in USDC, e.g. 1.50
payment	string	optional	a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "tx": {
      "type": "string",
      "description": "0x transaction hash on Arc"
    },
    "to": {
      "type": "string",
      "description": "optional expected recipient"
    },
    "expect": {
      "type": "string",
      "description": "optional expected amount in USDC, e.g. 1.50"
    },
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": [
    "tx"
  ]
}

arc_gas

What a transaction on Arc actually costs, measured from real receipts rather than quoted from the docs: percentiles per transaction kind, with the sample sizes. $0.004 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters1

payment

string

optional

a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": []
}

arc_fee_flow

Arc launchpad fee vaults: every vault holding USDC now, its creator and token, and how much it changed since our previous scan. Fees only accrue from real swaps. $0.025 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters1

payment

string

optional

a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": []
}

arc_cctp_cost

What bringing USDC into Arc over Circle CCTP really costs, measured from arrivals: every arrival with the amount credited and the fee taken, and observed fees by size. $0.004 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters1

payment

string

optional

a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": []
}

arc_graveyard

The Arc pool graveyard: every pool we measured with its state (empty or alive) and lifetime volume, so you know which ones nothing can be sold into. $0.025 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters1

payment

string

optional

a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": []
}

arc_impostors

Every token symbol on Arc worn by more than one contract, with how many contracts share it and the canonical address where one is verified. Identity is the contract, never the symbol. $0.004 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters1

payment

string

optional

a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": []
}

arc_deployers

Who launched what on Arc and whether any of it ever traded: every repeat creator with their launches and the swap fees those launches earned. $0.004 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters1

payment

string

optional

a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": []
}

arc_fresh_launches

Arc launches in real time, each with a sell verdict from a real round trip, so you see the new pools that can actually be exited. $0.003 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters1

payment

string

optional

a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": []
}

arc_hook_risk

What a Uniswap v4 hook on Arc is allowed to do, read from the permission bits in its address with no chain call: whether it runs on swaps or can rewrite amounts. A capability, not a verdict. $0.003 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters2

hook	string	required	0x hook address from the pool key
payment	string	optional	a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "hook": {
      "type": "string",
      "description": "0x hook address from the pool key"
    },
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": [
    "hook"
  ]
}

arc_agent_market

The agent economy on Arc, mapped: every agent in the ERC-8004 registry that publishes a registration file, with its owner, services and whether it takes x402. $0.004 per call over x402 (USDC on Arc, Base or Solana, or XNT on X1). Call once without `payment` for the terms, sign them with your own wallet, call again with `payment`.

Parameters1

payment

string

optional

a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call.

Raw schema

{
  "type": "object",
  "properties": {
    "payment": {
      "type": "string",
      "description": "a signed x402 payment (the base64 payload you would put in PAYMENT-SIGNATURE). Pass it and the purchase completes inside this tool call."
    }
  },
  "required": []
}

arc_catalogue_search

Who sells this on Arc, and for how much? Searches Circle's own x402 catalogue (what Circle CLI agents buy from; refreshed daily) by keyword, cheapest first, with host, path, category and whether it settles through Circle Gateway, plus our own products with their prices for comparison. Use it to price a service before you build or buy it. Free.

Parameters4

query	string	optional	keywords, e.g. "scrape", "token price", "email"
network	string	optional	arc (default), base, polygon, solana or any
maxPrice	number	optional	optional price cap in USD
limit	integer	optional	up to 40 (default 15)

Raw schema

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "description": "keywords, e.g. \"scrape\", \"token price\", \"email\""
    },
    "network": {
      "type": "string",
      "description": "arc (default), base, polygon, solana or any"
    },
    "maxPrice": {
      "type": "number",
      "description": "optional price cap in USD"
    },
    "limit": {
      "type": "integer",
      "description": "up to 40 (default 15)"
    }
  }
}

arc_facilitators

Who settles x402 payments on Arc, measured on the chain: every relayer that spent an EIP-3009 authorization on Arc USDC, with its label where one is published, how many settlements, payers and payees, volume, and the shape of its flow (direct, circular, concentrated, self or contract). Plus Circle's two facilitators and what each needs. Free.

Parameters1

limit

integer

optional

how many relayers (default 15, max 60)

Raw schema

{
  "type": "object",
  "properties": {
    "limit": {
      "type": "integer",
      "description": "how many relayers (default 15, max 60)"
    }
  }
}

arc_wallet

Everything public about one Arc address in one call: USDC (native, 18 decimals) and EURC and APEX balances, whether it is a contract, how many ERC-8004 agent identities it owns and which agents, and whether it sells over x402 on Arc. Read live from the chain. Free, 200 calls a day.

Parameters1

address

string

required

0x address on Arc

Raw schema

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string",
      "description": "0x address on Arc"
    }
  },
  "required": [
    "address"
  ]
}

arc_contract_check

Before you approve, pay or trust a contract on Arc: is it really a contract, can someone change its code (EIP-1967 proxy implementation, admin and beacon slots), who is its owner(), and what token it says it is. Read live from the chain. Free, 200 calls a day.

Parameters1

address

string

required

0x contract address on Arc

Raw schema

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string",
      "description": "0x contract address on Arc"
    }
  },
  "required": [
    "address"
  ]
}

arc_rpc_status

Which Arc RPC is answering right now, and how fast: the latest block, how far each one lags and its response time, measured this minute from our server. Arc's official RPC throttles in a way that reads like a bug ("Request exceeds defined limit"); use this to pick another. Free.

Parameters

No parameters.

Raw schema

{
  "type": "object",
  "properties": {}
}

arc_stablecoins

How many stablecoins exist on Arc right now, read from the contracts: USDC and EURC total supply, their addresses and the EIP-712 signing domains a payment signs against. Free.

Parameters

No parameters.

Raw schema

{
  "type": "object",
  "properties": {}
}

arc_agent_reputation

What other wallets have said about an Arc agent on chain: every ERC-8004 reputation entry for it (who gave it, the value, the tags, whether it was revoked) and the registry's own summary. Includes the weekly uptime records the APEX Watchtower writes. Free, 200 calls a day.

Parameters1

agentId

integer

required

the agent id in Arc's ERC-8004 registry

Raw schema

{
  "type": "object",
  "properties": {
    "agentId": {
      "type": "integer",
      "description": "the agent id in Arc's ERC-8004 registry"
    }
  },
  "required": [
    "agentId"
  ]
}

arc_agent_search

Find an agent on Arc by what it is called or where it answers: searches every agent in Arc's ERC-8004 registry that the APEX Watchtower checks each hour, and returns its id, status, uptime over measured hours, whether it can be paid on Arc and its main endpoint. Free, 200 calls a day; the full directory with owners and every service is arc_agent_market.

Parameters2

query	string	required	words from its name or endpoint, e.g. "oracle", "mcp", "news"
payableOnly	boolean	optional	only agents a standard client can pay on Arc

Raw schema

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "description": "words from its name or endpoint, e.g. \"oracle\", \"mcp\", \"news\""
    },
    "payableOnly": {
      "type": "boolean",
      "description": "only agents a standard client can pay on Arc"
    }
  },
  "required": [
    "query"
  ]
}

erc8004_how_to

How ERC-8004 works on Arc, from the spec and the deployed contracts: register an agent (and the one-call shortcuts), the registration file fields, proving your endpoint domain, pointing payments at an agentWallet, writing and reading reputation, and what explorers like 8004scan read. Free.

Parameters

No parameters.

Raw schema

{
  "type": "object",
  "properties": {}
}

x402_accept_on_arc_how_to

How to accept x402 payments on Arc, from what we verified on chain while doing it ourselves: the USDC and EURC signing domains, what a settlement leaves in the logs, what one costs in gas, and your three ways to settle (yourself, Circle Facilitator Service, Circle Gateway nanopayments). Free.

Parameters

No parameters.

Raw schema

{
  "type": "object",
  "properties": {}
}

get_onto_arc

How to get USDC onto Arc, every route we know works: a free claim at our faucet (a signature, no gas), bridges measured live, Circle CCTP and what it really costs at small size, Circle Gateway balances, and Circle's Onramp Kit for apps that let people pay by card or Apple Pay. Free.

Parameters

No parameters.

Raw schema

{
  "type": "object",
  "properties": {}
}

x402_inspect

How do I pay this URL? Point it at any x402 paywall and get its terms read for you: protocol version, every network and asset it accepts with the real amount, the address it pays, and how to pay each option (EIP-3009 signature, Circle Gateway batch, Solana fee payer). It also lists what is wrong with the paywall, e.g. a missing signing domain. Free, 100 calls a day.

Parameters2

url	string	required	the https URL of the paid resource
method	string	optional	GET (default) or POST

Raw schema

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "the https URL of the paid resource"
    },
    "method": {
      "type": "string",
      "description": "GET (default) or POST"
    }
  },
  "required": [
    "url"
  ]
}

Install

Tools (38)

arc_faucet_claimarc_faucet_statusarc_exit_checkarc_exit_check_bulkarc_agent_statusarc_x402_statsarc_poolsarc_bridges

Remote endpoint

Streamable HTTP

Hosted server - connect over the network, no local install.

url

https://apexfaucet.xyz/api/mcp/arc

Add to VS Code Add to Cursor

claude_desktop_config.json

json

{
  "mcpServers": {
    "apex-arc": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://apexfaucet.xyz/api/mcp/arc"
      ]
    }
  }
}

Desktop config is stdio-only; this bridges via mcp-remote. Native remote: Settings > Connectors.

MCP Server: xyz.apexfaucet/apex-arc

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

arc_faucet_claim

arc_faucet_status

arc_exit_check

arc_exit_check_bulk

arc_agent_status

arc_x402_stats

arc_pools

arc_bridges

arc_grow

arc_touchstone

arc_passport_draft

arc_passport_confirm

arc_passport_buy

arc_passport_status

arc_verdict

arc_counterparty

arc_payment_check

arc_gas

arc_fee_flow

arc_cctp_cost

arc_graveyard

arc_impostors

arc_deployers

arc_fresh_launches

arc_hook_risk

arc_agent_market

arc_catalogue_search

arc_facilitators

arc_wallet

arc_contract_check

arc_rpc_status

arc_stablecoins

arc_agent_reputation

arc_agent_search

erc8004_how_to

x402_accept_on_arc_how_to

get_onto_arc

x402_inspect

Install

Remote endpoint

Related servers