AI agents call html_decode to retrieve information from TinyFn without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
encoded | string | Yes | HTML encoded string to decode |
Parameters from the server's own tool schema.
HTML decoding is a deterministic, reversible transformation operation. It retrieves no external data, modifies nothing, executes no code, and has no destructive or financial implications. The risk of misuse is minimal—an agent cannot cause harm by decoding HTML text.
From the tool's definition Tool name 'html_decode' and description 'HTML decode text (unescape special characters)' indicates a data transformation function that decodes/unescapes HTML entities.
Attacks that exploit this kind of access
HTML decode text (unescape special characters). It is categorised as a Read tool in the TinyFn MCP Server, which means it retrieves data without modifying state.
html_decode accepts 1 parameter: encoded. Required: encoded. The full parameter table on this page comes from the server's own tool schema.
Register the TinyFn MCP server in PolicyLayer and add a rule for html_decode: 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 TinyFn. Nothing to install.
html_decode 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 html_decode 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 html_decode. 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.
html_decode is provided by the TinyFn MCP server (https://api.tinyfn.io/mcp/all/). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
html_decode is one line of TinyFn's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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