Batch-friendly source registration. Pass a sources array of 1 or more source objects. Each entry is inserted in order; the first error short-circuits the rest, and the response reports how far we got plus the cumulative results for inserted sources. ID format: pass source_id='src-1', 'src-2', ......
Risk signalsAccepts URL/endpoint input (sources[].url) · High parameter count (11 properties)
Part of the Prxhub server.
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AI agents use add_sources to create or modify resources in Prxhub. 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 add_sources 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 Prxhub.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"add_sources": {
"limits": [
{
"counter": "add_sources_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Prxhub policy for all 19 tools.
These attack patterns abuse exactly the kind of access add_sources 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.
Batch-friendly source registration. Pass a sources array of 1 or more source objects. Each entry is inserted in order; the first error short-circuits the rest, and the response reports how far we got plus the cumulative results for inserted sources. ID format: pass source_id='src-1', 'src-2', ... (sequential, hyphenated, lowercase). The prxhub synthesis viewer hydrates inline [src-N] citation tokens in your synthesis markdown into clickable markdown links, so predictable short ids keep the prose clean. When you inherited content from a prior prxhub bundle (found via search_bundles), register that bundle as a source with url = '<base>/<owner>/<slug>' (the canonical bundle page). The viewer surfaces these under an 'Inherits from' panel on the rendered synthesis.. It is categorised as a Write tool in the Prxhub MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Prxhub MCP server in PolicyLayer and add a rule for add_sources: 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 Prxhub. Nothing to install.
add_sources 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 add_sources 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 add_sources. 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.
add_sources is provided by the Prxhub MCP server (https://prxhub.com/api/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 19 Prxhub tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.