text_fit
Largest Helvetica size, on a fixed step, at which one line still fits a width. Sizes run from minSize to maxSize in steps (defaults 6, 72 and 0.5 points). Empty text fits at maxSize. If the line does not fit at minSize, the call is rejected. Width uses the same AFM rounding as text-width, so the ...
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What text_fit does on ScorpTech x402 API
AI agents invoke text_fit to trigger actions in ScorpTech x402 API. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
| Parameter | Type | Required | Description |
|---|---|---|---|
font | string | — | |
step | string | — | |
text | string | Yes | |
width | string | Yes | |
maxSize | string | — | |
minSize | string | — |
Parameters from the server's own tool schema.
Why text_fit is rated High
text_fit triggers real processes with real consequences. An agent gone sideways doesn't fire it once. It starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up.
Attacks that exploit this kind of access
The rule that runs text_fit safely
PolicyLayer is an MCP gateway: it sits between your AI agents and ScorpTech x402 API, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For text_fit, this is the rule to start with:
text_fit stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect ScorpTech x402 API, apply this rule, and every text_fit call is checked against it from then on.
Questions about text_fit
Largest Helvetica size, on a fixed step, at which one line still fits a width. Sizes run from minSize to maxSize in steps (defaults 6, 72 and 0.5 points). Empty text fits at maxSize. If the line does not fit at minSize, the call is rejected. Width uses the same AFM rounding as text-width, so the size is not a float division of the two widths. Price: $0.001 USDC per successful call (x402, Solana). Same tool over HTTPS: GET https://scorptech.it.com/api/x402/v1/text-fit. It is categorised as a Execute tool in the ScorpTech x402 API MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
text_fit accepts 6 parameters: font, step, text, width, maxSize, minSize. Required: text, width. The full parameter table on this page comes from the server's own tool schema.
Register the ScorpTech x402 API MCP server in PolicyLayer and add a rule for text_fit: 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 ScorpTech x402 API. Nothing to install.
text_fit is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the text_fit 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 text_fit. 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.
text_fit is provided by the ScorpTech x402 API MCP server (https://scorptech.it.com/api/x402/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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