# set-trustline

Create or modify a trust line on the XRP Ledger, allowing you to hold non-XRP assets

Agent View of the PolicyLayer registry record for `set-trustline`. HTML page: https://policylayer.com/tools/romthpt-mcp-xrpl/set-trustline

## Facts

- Tool: `set-trustline`
- Server: Xrpl mcp (`romthpt/mcp-xrpl`) — https://policylayer.com/tools/romthpt-mcp-xrpl.md
- Homepage: https://github.com/RomThpt/mcp-xrpl
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

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

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

## Why set-trustline is rated Medium

This tool creates or modifies trust lines, which are reversible ledger modifications that enable holding non-XRP assets. It is a Write operation as it modifies data without destroying it. Severity is high because misuse could allow an AI to establish unwanted trust relationships with malicious tokens or expose accounts to financial risk through unintended asset exposure, though the action itself is reversible.

From the tool's own definition: "Tool description states 'Create or modify a trust line on the XRP Ledger' — directly modifying ledger state to establish asset holdings"

## Use case

AI agents use set-trustline to create or update resources in Xrpl mcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Xrpl mcp environment.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "set-trustline": {
      "limits": [
        {
          "counter": "set-trustline_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Xrpl mcp (70)

- `amm-delete` — Destructive — https://policylayer.com/tools/romthpt-mcp-xrpl/amm-delete.md
- `check-cancel` — Destructive — https://policylayer.com/tools/romthpt-mcp-xrpl/check-cancel.md
- `credential-delete` — Destructive — https://policylayer.com/tools/romthpt-mcp-xrpl/credential-delete.md
- `deactivate-did` — Destructive — https://policylayer.com/tools/romthpt-mcp-xrpl/deactivate-did.md
- `delete-account` — Destructive — https://policylayer.com/tools/romthpt-mcp-xrpl/delete-account.md
- `escrow-cancel` — Destructive — https://policylayer.com/tools/romthpt-mcp-xrpl/escrow-cancel.md
- `mpt-issuance-destroy` — Destructive — https://policylayer.com/tools/romthpt-mcp-xrpl/mpt-issuance-destroy.md
- `offer-cancel` — Destructive — https://policylayer.com/tools/romthpt-mcp-xrpl/offer-cancel.md
- `oracle-delete` — Destructive — https://policylayer.com/tools/romthpt-mcp-xrpl/oracle-delete.md
- `permissioned-domain-delete` — Destructive — https://policylayer.com/tools/romthpt-mcp-xrpl/permissioned-domain-delete.md
- `reject-transaction` — Destructive — https://policylayer.com/tools/romthpt-mcp-xrpl/reject-transaction.md
- `amm-vote` — Execute — https://policylayer.com/tools/romthpt-mcp-xrpl/amm-vote.md
- `batch-submit` — Execute — https://policylayer.com/tools/romthpt-mcp-xrpl/batch-submit.md
- `transfer-nft` — Execute — https://policylayer.com/tools/romthpt-mcp-xrpl/transfer-nft.md
- `amm-bid` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/amm-bid.md
- `amm-clawback` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/amm-clawback.md
- `amm-create` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/amm-create.md
- `amm-deposit` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/amm-deposit.md
- `approve-transaction` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/approve-transaction.md
- `batch-payment` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/batch-payment.md
- `check-cash` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/check-cash.md
- `escrow-finish` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/escrow-finish.md
- `offer-create` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/offer-create.md
- `payment` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/payment.md
- `payment-channel-claim` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/payment-channel-claim.md
- `payment-channel-create` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/payment-channel-create.md
- `payment-channel-fund` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/payment-channel-fund.md
- `token-clawback` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/token-clawback.md
- `token-escrow-create` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/token-escrow-create.md
- `transfer-token` — Financial — https://policylayer.com/tools/romthpt-mcp-xrpl/transfer-token.md
- …and 40 more: https://policylayer.com/tools/romthpt-mcp-xrpl.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`

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