hash_text
Text Hash Digest (SHA / MD5) — Real cryptographic hex digests of a UTF-8 string — sha256 by default, plus the full family.
This record as markdown: /tools/com-wingmanprotocol-agent-gateway/hash-text.md
What hash_text does on Gateway
AI agents call hash_text to retrieve information from Gateway 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 |
|---|---|---|---|
text | string | Yes | Text to hash (UTF-8) |
algorithm | string | — | Digest to return as 'digest' |
Parameters from the server's own tool schema.
Why hash_text is rated Low
Hash computation is a read-only operation with no side effects on data or system state. It retrieves a computed cryptographic digest based on input text. There is no ability to create, modify, delete, execute code, move funds, or trigger external operations. The tool is purely computational and deterministic.
From the tool's definition Tool description states it produces 'Real cryptographic hex digests of a UTF-8 string' with options for SHA/MD5 families. This is a one-way cryptographic hash function that takes text input and returns a digest.
Attacks that exploit this kind of access
The rule that runs hash_text safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Gateway, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For hash_text, this is the rule to start with:
hash_text is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Gateway, apply this rule, and every hash_text call is checked against it from then on.
Questions about hash_text
Text Hash Digest (SHA / MD5) — Real cryptographic hex digests of a UTF-8 string — sha256 by default, plus the full family. It is categorised as a Read tool in the Gateway MCP Server, which means it retrieves data without modifying state.
hash_text accepts 2 parameters: text, algorithm. Required: text. The full parameter table on this page comes from the server's own tool schema.
Register the Gateway MCP server in PolicyLayer and add a rule for hash_text: 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 Gateway. Nothing to install.
hash_text is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the hash_text 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.
Set action: deny in the PolicyLayer policy for hash_text. 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.
hash_text is provided by the Gateway MCP server (https://wingmanprotocol.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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