sap_preview_transaction

SERVERSap SOURCEhttps://mcp.sap.oobeprotocol.ai/mcp

Medium RISK CLASS

Category Write

Parameters 20 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/oobe-protocol-labs-sap-mcp-server/sap-preview-transaction.md

WHAT IT DOES

What sap_preview_transaction does on Sap

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

Parameter	Type	Required	Description
`encoding`	string	—	Input encoding
`transaction`	string	—	Serialized transaction

Parameters from the server's own tool schema.

RISK

Why sap_preview_transaction is rated Medium

An AI agent can call sap_preview_transaction faster than any human can review: one bad instruction and it creates or modifies resources in Sap by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs sap_preview_transaction safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Sap, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For sap_preview_transaction, this is the rule to start with:

sap_preview_transaction Rate-limited

sap_preview_transaction stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "sap_preview_transaction": {
      "limits": [
        {
          "counter": "sap_preview_transaction_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Sap, apply this rule, and every sap_preview_transaction call is checked against it from then on.

FAQ

Questions about sap_preview_transaction

What does the sap_preview_transaction tool do? +

Preview a Solana transaction before signing or submission. This is the required preflight step for agent workflows; do not create local signing scripts or read keypair files. SAP MCP execution guidance: Intent: SAP MCP tool workflow. Pricing: free; call directly without x402. Routing: free hosted call; call directly and keep it small/exact when possible. Signer boundary: hosted reads/builders never receive keypair bytes; value-moving results must be finalized locally when signing is required. It is categorised as a Write tool in the Sap MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does sap_preview_transaction accept? +

sap_preview_transaction accepts 2 parameters: encoding, transaction. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on sap_preview_transaction? +

Register the Sap MCP server in PolicyLayer and add a rule for sap_preview_transaction: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Sap. Nothing to install.

What risk level is sap_preview_transaction? +

sap_preview_transaction is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit sap_preview_transaction? +

Yes. Add a rate_limit block to the sap_preview_transaction rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block sap_preview_transaction completely? +

Set action: deny in the PolicyLayer policy for sap_preview_transaction. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides sap_preview_transaction? +

sap_preview_transaction is provided by the Sap MCP server (https://mcp.sap.oobeprotocol.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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