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UNRENT

by unrent.xyz · remote · no sign-in to list tools · v1.0.0 · published by xyz.unrent

Reclaim overpaid rent from Solana token accounts (SIMD-0437). Non-custodial, no API key.

Deletes · 1Changes · 1
CompareRegistry entry

4 tools: 1 can delete or cancel things, 1 change things and 2 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http unrent https://unrent.xyz/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

4 tools

Deletes or cancels 1Claude Code: deny
  • submit_reclaimChecks the signed transactions against the ones build_reclaim made (same instructions, same fee, signed by the wallet) and sends them to Solana.No findings

    Why it is in this group

    • The name "submit_reclaim" says "submit": a word for a change.
    • The server marks it destructive (destructiveHint: true).
    Description, as the server wrote it
    Checks the signed transactions against the ones build_reclaim made (same instructions, same fee, signed by the wallet) and sends them to Solana. Returns the signature and status of every transaction. A claim can be submitted once; after an expired blockhash, build again.

    Annotations the server declares

    • title: Send the signed reclaim
    • readOnlyHint: false
    • destructiveHint: true
    • idempotentHint: false
    • openWorldHint: true
Changes things 1Claude Code: ask
  • build_reclaimRe-scans the wallet on the chain and builds the reclaim as unsigned, simulated Solana transactions (base64, versioned).No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Re-scans the wallet on the chain and builds the reclaim as unsigned, simulated Solana transactions (base64, versioned). They withdraw excess rent, close empty accounts and pay the service fee as the last instruction; nothing else leaves the wallet. Tokens are only burned for accounts listed in `burn`. The wallet's owner signs every transaction unchanged (the fee payer is the wallet, compute budget instructions may be added) and passes them to submit_reclaim within about 60 seconds, before the blockhash expires. Do not send them yourself.

    Annotations the server declares

    • title: Build the reclaim transactions
    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
Only reads 2Claude Code: allow
  • get_rent_statusWhere Solana's rent reduction (SIMD-0437) stands: the live lamports_per_byte, which of the five steps are live, and when the next is expected.No findings

    Why it is in this group

    • The name "get_rent_status" says "get": a word for reading.
    Description, as the server wrote it
    Where Solana's rent reduction (SIMD-0437) stands: the live lamports_per_byte, which of the five steps are live, and when the next is expected. Older accounts keep their higher deposit until it is withdrawn; each step makes more SOL reclaimable.

    Annotations the server declares

    • title: Solana rent reduction status (SIMD-0437)
    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: true
  • scan_walletReads the token accounts and mints of a Solana wallet and returns the SOL that can be reclaimed now: excess rent (WithdrawExcessLamports, accounts stay open), empty token accounts …No findings

    Why it is in this group

    • The description's first verb is "read": a word for reading.
    Description, as the server wrote it
    Reads the token accounts and mints of a Solana wallet and returns the SOL that can be reclaimed now: excess rent (WithdrawExcessLamports, accounts stay open), empty token accounts (CloseAccount) and mint excess, the UNRENT service fee, the net amount, a forecast for the remaining rent steps, and tokens that may optionally be burned and closed (dust). Read-only, needs no signature. Amounts are in SOL. Also returns signUrl: a link to finish the reclaim on unrent.xyz with a browser wallet (Phantom, Solflare, Backpack…), for when you cannot sign for the wallet yourself.

    Annotations the server declares

    • title: Scan a wallet for reclaimable rent
    • readOnlyHint: true
    • idempotentHint: true
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http unrent https://unrent.xyz/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__unrent__get_rent_status",
      "mcp__unrent__scan_wallet"
    ],
    "ask": [
      "mcp__unrent__build_reclaim"
    ],
    "deny": [
      "mcp__unrent__submit_reclaim"
    ]
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as unrent. Review it before you use it.