Generate image descriptions using Runware's API. Analyzes images to produce accurate and concise captions that can be used to create additional images or provide detailed insights into visual content. This function enables AI-powered image analysis to generate descriptive text p...
Part of the Mcp Runware MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents use imageCaption to create or modify resources in Mcp Runware. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call imageCaption repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Mcp Runware.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
tools:
imageCaption:
rules:
- action: allow
rate_limit:
max: 30
window: 60See the full Mcp Runware policy for all 11 tools.
Agents calling write-class tools like imageCaption have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
Generate image descriptions using Runware's API. Analyzes images to produce accurate and concise captions that can be used to create additional images or provide detailed insights into visual content. This function enables AI-powered image analysis to generate descriptive text prompts from images. It's useful for understanding image content or generating prompts for further image creation. IMPORTANT: For inputImage, only accept: 1. Publicly available URLs (e.g., "https://example.com/image.jpg") 2. File paths that can be processed by imageUpload tool first 3. Runware UUIDs from previously uploaded images Workflow: If user provides a local file path, first use imageUpload to get a Runware UUID, then use that UUID here. Args: inputImage (str): Image to analyze. ACCEPTS ONLY: Public URLs, Runware UUIDs, or file paths (use imageUpload first to get UUID). Supported formats: PNG, JPG, WEBP includeCost (bool, optional): Include generation cost in response taskUUID (UUID, optional): Unique task identifier Returns: dict: A dictionary containing the caption generation result with status, message, result data (including the generated text), and cost if requested. . It is categorised as a Write tool in the Mcp Runware MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Add a rule in your Intercept YAML policy under the tools section for imageCaption. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Mcp Runware MCP server.
imageCaption is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the imageCaption rule in your Intercept 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 Intercept policy for imageCaption. 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.
imageCaption is provided by the Mcp Runware MCP server (elijahdev0/mcp-runware). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept