Get the context packet for a specific branch — summarized intent and messages up to the fork point.
Part of the Threadmap server.
Free to start. No card required.
AI agents call threadmap_branch_context to retrieve information from Threadmap without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though threadmap_branch_context only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"threadmap_branch_context": {}
}
}See the full Threadmap policy for all 7 tools.
These attack patterns abuse exactly the kind of access threadmap_branch_context gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Get the context packet for a specific branch — summarized intent and messages up to the fork point.. It is categorised as a Read tool in the Threadmap MCP Server, which means it retrieves data without modifying state.
Register the Threadmap MCP server in PolicyLayer and add a rule for threadmap_branch_context: 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 Threadmap. Nothing to install.
threadmap_branch_context is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the threadmap_branch_context 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 threadmap_branch_context. 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.
threadmap_branch_context is provided by the Threadmap MCP server (threadmap-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 Threadmap tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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