# decode_signed_transaction

Decode base64 signed transaction bytes back into a transaction object with signature details. Accepts the blob from sign_transaction or wallet_sign_transaction.

Agent View of the PolicyLayer registry record for `decode_signed_transaction`. HTML page: https://policylayer.com/tools/goplausible-algorand-mcp/decode-signed-transaction

## Facts

- Tool: `decode_signed_transaction`
- Server: Algorand MCP (`goplausible/algorand-mcp`) — https://policylayer.com/tools/goplausible-algorand-mcp.md
- Homepage: https://github.com/GoPlausible/algorand-mcp
- 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": "decode_signed_transaction",
    "arguments": {}
  }
}
```

## Why decode_signed_transaction is rated Low

This is purely a read/parsing operation that examines the contents of an already-signed transaction blob and returns structured data. It has no side effects, cannot modify state, and cannot trigger financial transfers or blockchain transactions. The decoded output is informational only.

From the tool's own definition: "Tool decodes base64 signed transaction bytes into a transaction object—it parses and retrieves information ('Decode', 'back into') without modifying, deleting, or executing any on-chain operations."

## Use case

AI agents call decode_signed_transaction to retrieve information from Algorand MCP 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 Algorand MCP:

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

## Other tools on Algorand MCP (176)

- `api_ultrade_market_cancel_order` — Destructive — https://policylayer.com/tools/goplausible-algorand-mcp/api-ultrade-market-cancel-order.md
- `api_ultrade_wallet_revoke_key` — Destructive — https://policylayer.com/tools/goplausible-algorand-mcp/api-ultrade-wallet-revoke-key.md
- `make_app_delete_txn` — Destructive — https://policylayer.com/tools/goplausible-algorand-mcp/make-app-delete-txn.md
- `make_asset_destroy_txn` — Destructive — https://policylayer.com/tools/goplausible-algorand-mcp/make-asset-destroy-txn.md
- `wallet_remove_account` — Destructive — https://policylayer.com/tools/goplausible-algorand-mcp/wallet-remove-account.md
- `api_ultrade_wallet_signin` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/api-ultrade-wallet-signin.md
- `assign_group_id` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/assign-group-id.md
- `compile_teal` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/compile-teal.md
- `encode_unsigned_transaction` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/encode-unsigned-transaction.md
- `make_app_call_txn` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/make-app-call-txn.md
- `make_app_clear_txn` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/make-app-clear-txn.md
- `make_app_create_txn` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/make-app-create-txn.md
- `mnemonic_from_seed` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/mnemonic-from-seed.md
- `rekey_account` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/rekey-account.md
- `send_raw_transaction` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/send-raw-transaction.md
- `sign_bytes` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/sign-bytes.md
- `sign_transaction` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/sign-transaction.md
- `simulate_raw_transactions` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/simulate-raw-transactions.md
- `simulate_transactions` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/simulate-transactions.md
- `wallet_sign_data` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/wallet-sign-data.md
- `wallet_sign_transaction` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/wallet-sign-transaction.md
- `wallet_sign_transaction_group` — Execute — https://policylayer.com/tools/goplausible-algorand-mcp/wallet-sign-transaction-group.md
- `alpha_amend_order` — Financial — https://policylayer.com/tools/goplausible-algorand-mcp/alpha-amend-order.md
- `alpha_cancel_order` — Financial — https://policylayer.com/tools/goplausible-algorand-mcp/alpha-cancel-order.md
- `alpha_claim` — Financial — https://policylayer.com/tools/goplausible-algorand-mcp/alpha-claim.md
- `alpha_create_limit_order` — Financial — https://policylayer.com/tools/goplausible-algorand-mcp/alpha-create-limit-order.md
- `alpha_create_market_order` — Financial — https://policylayer.com/tools/goplausible-algorand-mcp/alpha-create-market-order.md
- `alpha_merge_shares` — Financial — https://policylayer.com/tools/goplausible-algorand-mcp/alpha-merge-shares.md
- `alpha_propose_match` — Financial — https://policylayer.com/tools/goplausible-algorand-mcp/alpha-propose-match.md
- `alpha_split_shares` — Financial — https://policylayer.com/tools/goplausible-algorand-mcp/alpha-split-shares.md
- …and 146 more: https://policylayer.com/tools/goplausible-algorand-mcp.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=goplausible-algorand-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/goplausible-algorand-mcp