Deduplicate chunks by exact content hash or fuzzy similarity (simhash). Preserves the first occurrence and tracks duplicates.
AI agents use indexfoundry_normalize_dedupe to create or update resources in IndexFoundry MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your IndexFoundry MCP environment.
This tool modifies a dataset by removing duplicate chunks and tracking which were removed. While it 'preserves the first occurrence,' it irreversibly discards duplicate entries from the pipeline — however, since deduplication typically operates on an intermediate processing stage (not permanent storage deletion) and preserves originals by tracking duplicates, it's best classified as Write (data…
From the tool's definition Deduplicate chunks by exact content hash or fuzzy similarity (simhash). Preserves the first occurrence and tracks duplicates.
Attacks that exploit this kind of access
Deduplicate chunks by exact content hash or fuzzy similarity (simhash). Preserves the first occurrence and tracks duplicates. It is categorised as a Write tool in the IndexFoundry MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the IndexFoundry MCP server in PolicyLayer and add a rule for indexfoundry_normalize_dedupe: 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 IndexFoundry MCP. Nothing to install.
indexfoundry_normalize_dedupe 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 indexfoundry_normalize_dedupe 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 indexfoundry_normalize_dedupe. 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.
indexfoundry_normalize_dedupe is provided by the IndexFoundry MCP server (mnehmos/mnehmos.index-foundry.mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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