# Unpack Source Map Sources This tool extracts all source files and their content from a source map. ## Parameters: - sourceMapUrl: The URL of the source map file to unpack ## Returns: - A JSON object containing: - sources: Object with source file paths as keys and their content as values - sourc...
Risk signalsAdmin/system-level operation
Part of the Source Map Parser server.
Free to start. No card required.
AI agents invoke unpack_sources to trigger processes or run actions in Source Map Parser. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
unpack_sources can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. PolicyLayer enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
{
"version": "1",
"default": "deny",
"tools": {
"unpack_sources": {
"limits": [
{
"counter": "unpack_sources_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full Source Map Parser policy for all 3 tools.
These attack patterns abuse exactly the kind of access unpack_sources gives an agent. Each links to the full case and the policy that stops it:
Other execute tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
# Unpack Source Map Sources This tool extracts all source files and their content from a source map. ## Parameters: - sourceMapUrl: The URL of the source map file to unpack ## Returns: - A JSON object containing: - sources: Object with source file paths as keys and their content as values - sourceRoot: The source root path from the source map - file: The original file name - totalSources: Total number of source files found. It is categorised as a Execute tool in the Source Map Parser MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Source Map Parser MCP server in PolicyLayer and add a rule for unpack_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 Source Map Parser. Nothing to install.
unpack_sources 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 unpack_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 unpack_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.
unpack_sources is provided by the Source Map Parser MCP server (source-map-parser-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 3 Source Map Parser tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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