hash_sha256

Compute SHA-256 hash of hex-encoded data.

SERVERTenzro Ledger MCP SOURCEhttps://canton-mcp.tenzro.network/mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/network-tenzro-tenzro/hash-sha256.md

WHAT IT DOES

What hash_sha256 does on Tenzro Ledger MCP

AI agents call hash_sha256 to retrieve information from Tenzro Ledger MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why hash_sha256 is rated Low

SHA-256 hashing is a pure computational function that retrieves/computes a value from input without creating, modifying, deleting, or executing external operations. It has no reversible or irreversible effects on system state. Despite being on a financial/payment-focused server (Tenzro Ledger), the tool itself only performs read-like computation.

From the tool's definition Tool description states 'Compute SHA-256 hash of hex-encoded data.' This is a cryptographic hash function that takes input and produces a deterministic output with no side effects, data modification, or external operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hash_sha256 safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Tenzro Ledger MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For hash_sha256, this is the rule to start with:

hash_sha256 Allowed

hash_sha256 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": {
    "hash_sha256": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect Tenzro Ledger MCP, apply this rule, and every hash_sha256 call is checked against it from then on.

FAQ

Questions about hash_sha256

What does the hash_sha256 tool do? +

Compute SHA-256 hash of hex-encoded data. It is categorised as a Read tool in the Tenzro Ledger MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on hash_sha256? +

Register the Tenzro Ledger MCP server in PolicyLayer and add a rule for hash_sha256: 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 Tenzro Ledger MCP. Nothing to install.

What risk level is hash_sha256? +

hash_sha256 is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit hash_sha256? +

Yes. Add a rate_limit block to the hash_sha256 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 hash_sha256 completely? +

Set action: deny in the PolicyLayer policy for hash_sha256. 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 hash_sha256? +

hash_sha256 is provided by the Tenzro Ledger MCP server (https://canton-mcp.tenzro.network/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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