Extract tables from Markdown and convert them to CSV format. Parses GFM pipe-tables from the input and outputs comma-separated values. If the Markdown contains multiple tables, they are concatenated with a blank line separator. Non-table content is ignored. If the Markdown contains no tables, ret...
Part of the Markdown server.
Free to start. No card required.
AI agents use convert_to_csv to create or modify resources in Markdown. 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 convert_to_csv repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Markdown.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"convert_to_csv": {
"limits": [
{
"counter": "convert_to_csv_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Markdown policy for all 34 tools.
These attack patterns abuse exactly the kind of access convert_to_csv gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Extract tables from Markdown and convert them to CSV format. Parses GFM pipe-tables from the input and outputs comma-separated values. If the Markdown contains multiple tables, they are concatenated with a blank line separator. Non-table content is ignored. If the Markdown contains no tables, returns an empty string. Side effects: when output_path is provided, writes the CSV to disk (creates parent directories, overwrites existing files). When output_path is omitted, returns the CSV text directly as a string. Returns: CSV text string (if no output_path), or JSON { success, file_path, file_size_bytes, format } (if output_path set). Use this for lightweight tabular export or when downstream tools expect CSV. Prefer convert_to_xlsx for Excel-compatible spreadsheets with multiple sheets, or convert_to_json for structured data.. It is categorised as a Write tool in the Markdown MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Markdown MCP server in PolicyLayer and add a rule for convert_to_csv: 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 Markdown. Nothing to install.
convert_to_csv 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 convert_to_csv 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 convert_to_csv. 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.
convert_to_csv is provided by the Markdown MCP server (@xjtlumedia/markdown-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 34 Markdown tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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