Filecoin Actor Balance and Nonce

filecoinrpc/actor

The actor behind one Filecoin address at the head: balance in attoFIL and FIL (exact strings, 1 FIL = 10^18 attoFIL), nonce, and the actor's code and head CIDs. Works for f0, f1, f2, f3 and f4 addresses (t on Calibration). An address with no actor is found false. Read from public Filecoin Lotus nodes that offer no SLA and can be slow or throttled; they keep only about two weeks of mainnet history (one day on Calibration) and are run by one operator. Served by Eden Engine; not an official product of Filecoin, Protocol Labs or any node operator.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $0.50.

Data source

Public blockchains

On-chain data read from public Filecoin Lotus nodes; no licence or credit is required. Served by Eden Engine; not an official product of Filecoin, Protocol Labs or any node operator.

Use it

Your AI assistant does the work: it finds this tool, shows you the price first, runs it, and you are charged when the run finishes. There is nothing to set up for this tool in particular.

Connect once and your AI can find and run this tool, and any other it needs.

Install it Create an account

For developers: the calls your assistant makes

agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "filecoinrpc/actor" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "filecoinrpc/actor" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "filecoinrpc/actor", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "filecoinrpc/actor", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 28, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "network",
    "address"
  ],
  "properties": {
    "address": {
      "type": "string",
      "pattern": "^[ft][0-4][0-9A-Za-z]{1,200}$",
      "description": "A Filecoin address: f0 (id), f1 (secp256k1), f2 (actor), f3 (BLS) or f4 (delegated/EVM) on mainnet, t0 to t4 on Calibration (for example f01000)."
    },
    "network": {
      "enum": [
        "mainnet",
        "calibration"
      ],
      "type": "string",
      "description": "The network to read: mainnet (Filecoin mainnet), calibration (Filecoin Calibration testnet). Required; there is no default, so a call never reads the wrong chain silently."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "found"
  ],
  "properties": {
    "found": {
      "type": "boolean",
      "description": "False when the node has no such item; then no other field is present."
    },
    "nonce": {
      "type": [
        "integer",
        "null"
      ]
    },
    "code_cid": {
      "type": [
        "string",
        "null"
      ],
      "description": "Identifies the actor type (account, multisig, miner...)."
    },
    "head_cid": {
      "type": [
        "string",
        "null"
      ]
    },
    "balance_fil": {
      "type": [
        "string",
        "null"
      ],
      "description": "The same balance in FIL (attoFIL / 10^18), an exact decimal string."
    },
    "balance_attofil": {
      "type": [
        "string",
        "null"
      ],
      "description": "Balance in attoFIL, an exact decimal string."
    },
    "delegated_address": {
      "type": [
        "string",
        "null"
      ],
      "description": "The f4 address of an EVM-compatible actor, when it has one."
    }
  },
  "description": "The actor, or found false.",
  "additionalProperties": true
}