lookup_base64
Encode or decode base64. Pass ?text=...&op=encode|decode as query. Use for data-format agents. Example call: {"query_string": "text=hello&op=encode"} Cost: $0.005–$0.05 USDC on Base per call.
This record as markdown: /tools/io-github-colinhughes2121-gocreative-agent-api/lookup-base64.md
What lookup_base64 does on GoCreative Agent API
AI agents call lookup_base64 to retrieve information from GoCreative Agent API 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 |
|---|---|---|---|
query_string | string | — |
Parameters from the server's own tool schema.
Why lookup_base64 is rated Low
Base64 encoding/decoding are purely computational transformations that read input and return formatted output without persistent data changes, side effects, or external actions. This is a read operation at its core. Severity is low due to negligible blast radius: misuse would only produce different encoded/decoded strings with no impact on external systems or data integrity.
From the tool's definition Tool description states 'Encode or decode base64.' Base64 encoding and decoding are reversible, data-format transformations with no side effects. No creation, modification, deletion, or execution of external operations occurs.
Attacks that exploit this kind of access
The rule that runs lookup_base64 safely
PolicyLayer is an MCP gateway: it sits between your AI agents and GoCreative Agent API, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For lookup_base64, this is the rule to start with:
lookup_base64 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 GoCreative Agent API, apply this rule, and every lookup_base64 call is checked against it from then on.
Questions about lookup_base64
Encode or decode base64. Pass ?text=...&op=encode|decode as query. Use for data-format agents. Example call: {"query_string": "text=hello&op=encode"} Cost: $0.005–$0.05 USDC on Base per call. It is categorised as a Read tool in the GoCreative Agent API MCP Server, which means it retrieves data without modifying state.
lookup_base64 accepts 1 parameter: query_string. The full parameter table on this page comes from the server's own tool schema.
Register the GoCreative Agent API MCP server in PolicyLayer and add a rule for lookup_base64: 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 GoCreative Agent API. Nothing to install.
lookup_base64 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 lookup_base64 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 lookup_base64. 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.
lookup_base64 is provided by the GoCreative Agent API MCP server (https://api.gocreativeai.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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