# get_trx_balance

Get TRX balance for an address.

Agent View of the PolicyLayer registry record for `get_trx_balance`. HTML page: https://policylayer.com/tools/justlend-mcp-server-justlend/get-trx-balance

## Facts

- Tool: `get_trx_balance`
- Server: Justlend (`justlend/mcp-server-justlend`) — https://policylayer.com/tools/justlend-mcp-server-justlend.md
- Homepage: https://github.com/justlend/mcp-server-justlend
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_trx_balance",
    "arguments": {}
  }
}
```

## Why get_trx_balance is rated Low

This tool performs a straightforward balance query on the TRON blockchain. It retrieves information (the TRX balance associated with a given address) without side effects, state changes, or execution of arbitrary code. This is a classic Read operation with minimal risk—at worst, an agent could query balances for reconnaissance, but no funds, contracts, or data are at risk of modification or loss.

From the tool's own definition: "Tool name 'get_trx_balance' and description 'Get TRX balance for an address' indicate a read-only query operation that retrieves balance data without modifying state or triggering external operations."

## Use case

AI agents call get_trx_balance to retrieve information from Justlend without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Justlend:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_trx_balance": {}
  }
}
```

## Other tools on Justlend (103)

- `return_energy_rental` — Destructive — https://policylayer.com/tools/justlend-mcp-server-justlend/return-energy-rental.md
- `buy_energy_direct` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/buy-energy-direct.md
- `claim_rewards` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/claim-rewards.md
- `claim_strx_rewards` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/claim-strx-rewards.md
- `deposit_jst_for_votes` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/deposit-jst-for-votes.md
- `moolah_borrow` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/moolah-borrow.md
- `moolah_liquidate` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/moolah-liquidate.md
- `moolah_repay` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/moolah-repay.md
- `moolah_supply_collateral` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/moolah-supply-collateral.md
- `moolah_vault_deposit` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/moolah-vault-deposit.md
- `moolah_vault_withdraw` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/moolah-vault-withdraw.md
- `moolah_withdraw_collateral` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/moolah-withdraw-collateral.md
- `rent_energy` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/rent-energy.md
- `repay` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/repay.md
- `supply` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/supply.md
- `transfer_trc20` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/transfer-trc20.md
- `transfer_trx` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/transfer-trx.md
- `withdraw` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/withdraw.md
- `withdraw_all` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/withdraw-all.md
- `withdraw_votes_from_proposal` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/withdraw-votes-from-proposal.md
- `withdraw_votes_to_jst` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/withdraw-votes-to-jst.md
- `wrap_trx` — Financial — https://policylayer.com/tools/justlend-mcp-server-justlend/wrap-trx.md
- `borrow` — Read — https://policylayer.com/tools/justlend-mcp-server-justlend/borrow.md
- `calculate_energy_rental_price` — Read — https://policylayer.com/tools/justlend-mcp-server-justlend/calculate-energy-rental-price.md
- `check_allowance` — Read — https://policylayer.com/tools/justlend-mcp-server-justlend/check-allowance.md
- `check_jst_allowance_for_voting` — Read — https://policylayer.com/tools/justlend-mcp-server-justlend/check-jst-allowance-for-voting.md
- `check_strx_withdrawal_eligibility` — Read — https://policylayer.com/tools/justlend-mcp-server-justlend/check-strx-withdrawal-eligibility.md
- `claim_moolah_mining_period` — Read — https://policylayer.com/tools/justlend-mcp-server-justlend/claim-moolah-mining-period.md
- `claim_v1_mining_period` — Read — https://policylayer.com/tools/justlend-mcp-server-justlend/claim-v1-mining-period.md
- `estimate_lending_energy` — Read — https://policylayer.com/tools/justlend-mcp-server-justlend/estimate-lending-energy.md
- …and 73 more: https://policylayer.com/tools/justlend-mcp-server-justlend.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=justlend-mcp-server-justlend · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/justlend-mcp-server-justlend