Upload a document to the organization's knowledge base. Documents can be templates, policies, contracts, procedures, guides, or references. They are indexed in the knowledge graph and automatically surfaced as context when relevant to a task. Supports both text and binary files: for binary files ...
Risk signalsAccepts raw HTML/template content (content) · High parameter count (11 properties)
Part of the ContextLayer server.
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AI agents use upload_document to create or modify resources in ContextLayer. 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 upload_document 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 ContextLayer.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"upload_document": {
"limits": [
{
"counter": "upload_document_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full ContextLayer policy for all 62 tools.
These attack patterns abuse exactly the kind of access upload_document 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.
Upload a document to the organization's knowledge base. Documents can be templates, policies, contracts, procedures, guides, or references. They are indexed in the knowledge graph and automatically surfaced as context when relevant to a task. Supports both text and binary files: for binary files (PDFs, images, etc.), set is_base64=true and provide the content as a base64-encoded string, along with the appropriate mime_type (e.g. 'application/pdf', 'image/png'). Optionally set file_name for the original filename. Embeddings are generated automatically for search.. It is categorised as a Write tool in the ContextLayer MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ContextLayer MCP server in PolicyLayer and add a rule for upload_document: 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 ContextLayer. Nothing to install.
upload_document 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 upload_document 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 upload_document. 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.
upload_document is provided by the ContextLayer MCP server (https://api.dotnova.io/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 62 ContextLayer tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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