tengu_v3_reference_coverage
CROSSWALK COVERAGE — what the reference dataset actually contains, measured live and stated as numbers rather than adjectives: securities and issuers carried and how many are still active, identifier bindings held and how many are RETIRED, the percentage of securities carrying each rung, how many...
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What tengu_v3_reference_coverage does on Tengu
AI agents invoke tengu_v3_reference_coverage to trigger actions in Tengu. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why tengu_v3_reference_coverage is rated High
tengu_v3_reference_coverage triggers real processes with real consequences. An agent gone sideways doesn't fire it once. It starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs tengu_v3_reference_coverage safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Tengu, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For tengu_v3_reference_coverage, this is the rule to start with:
tengu_v3_reference_coverage stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Tengu, apply this rule, and every tengu_v3_reference_coverage call is checked against it from then on.
Questions about tengu_v3_reference_coverage
CROSSWALK COVERAGE — what the reference dataset actually contains, measured live and stated as numbers rather than adjectives: securities and issuers carried and how many are still active, identifier bindings held and how many are RETIRED, the percentage of securities carrying each rung, how many issuers bridge into the private-company graph and how those links break down by confidence grade, and how many dated issuer change events are on file. It also NAMES the rungs this crosswalk deliberately does not serve and why — a missing rung is a stated fact here, not a silent gap a customer discovers after integrating. Every source is listed with its own as-of date, its age in days and whether that age is beyond its expected refresh cadence, so a vintage component can never pass as current. Live-measured 2026-08-02: 77,313 securities (25,512 active), 58,179 issuers, 969,333 identifier bindings (209,715 current / 759,618 retired) across 9 indexed rungs, 26,189 issuers (45.0%) linked to the private graph. Call it before you buy, or before you build against it. It is categorised as a Execute tool in the Tengu MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Tengu MCP server in PolicyLayer and add a rule for tengu_v3_reference_coverage: 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 Tengu. Nothing to install.
tengu_v3_reference_coverage 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 tengu_v3_reference_coverage 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 tengu_v3_reference_coverage. 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.
tengu_v3_reference_coverage is provided by the Tengu MCP server (Hlobo-dev/tengu-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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