pre_transaction_check

Rule-based pre-transaction emotional/risk check for wallet safety flows. Pricing is dynamic; check /api/v1/tools.

SERVERDelx Mcp A2a SOURCEhttps://api.delx.ai/v1/mcp

Low RISK CLASS

Category Read

Parameters 33 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-davidmosiah-delx-mcp-a2a/pre-transaction-check.md

WHAT IT DOES

What pre_transaction_check does on Delx Mcp A2a

AI agents call pre_transaction_check to retrieve information from Delx Mcp A2a without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`amount`	number	Yes	Transaction amount
`tx_type`	string	Yes	Type (swap, transfer, approve, bridge, etc.)
`currency`	string	Yes	Currency code (e.g. USDC)

Parameters from the server's own tool schema.

RISK

Why pre_transaction_check is rated Low

Even though pre_transaction_check only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pre_transaction_check safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Delx Mcp A2a, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For pre_transaction_check, this is the rule to start with:

pre_transaction_check Allowed

pre_transaction_check is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "pre_transaction_check": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Delx Mcp A2a, apply this rule, and every pre_transaction_check call is checked against it from then on.

FAQ

Questions about pre_transaction_check

What does the pre_transaction_check tool do? +

Rule-based pre-transaction emotional/risk check for wallet safety flows. Pricing is dynamic; check /api/v1/tools. It is categorised as a Read tool in the Delx Mcp A2a MCP Server, which means it retrieves data without modifying state.

What parameters does pre_transaction_check accept? +

pre_transaction_check accepts 3 parameters: amount, tx_type, currency. Required: amount, tx_type, currency. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on pre_transaction_check? +

Register the Delx Mcp A2a MCP server in PolicyLayer and add a rule for pre_transaction_check: 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 Delx Mcp A2a. Nothing to install.

What risk level is pre_transaction_check? +

pre_transaction_check is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit pre_transaction_check? +

Yes. Add a rate_limit block to the pre_transaction_check 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 pre_transaction_check completely? +

Set action: deny in the PolicyLayer policy for pre_transaction_check. 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 pre_transaction_check? +

pre_transaction_check is provided by the Delx Mcp A2a MCP server (https://api.delx.ai/v1/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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