Unlock a flight offer for booking — $1 proof-of-intent fee. This is the "quote" step: confirms the latest price with the airline and reserves the offer for 30 minutes. ALWAYS call this before book_flight so the user can see the confirmed price. If the confirmed price differs from the search pri...
Part of the BoostedTravel MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents use unlock_flight_offer to create or modify resources in BoostedTravel. 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 unlock_flight_offer repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach BoostedTravel.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
tools:
unlock_flight_offer:
rules:
- action: allow
rate_limit:
max: 30
window: 60 See the full BoostedTravel policy for all 8 tools.
Agents calling write-class tools like unlock_flight_offer have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
Unlock a flight offer for booking — $1 proof-of-intent fee. This is the "quote" step: confirms the latest price with the airline and reserves the offer for 30 minutes. ALWAYS call this before book_flight so the user can see the confirmed price. If the confirmed price differs from the search price, inform the user before proceeding. Requires payment method (call setup_payment first). SAFETY: Charges $1. Not idempotent — calling twice on the same offer will charge twice.. It is categorised as a Write tool in the BoostedTravel MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Add a rule in your Intercept YAML policy under the tools section for unlock_flight_offer. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the BoostedTravel MCP server.
unlock_flight_offer 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 unlock_flight_offer rule in your Intercept 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 Intercept policy for unlock_flight_offer. 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.
unlock_flight_offer is provided by the BoostedTravel MCP server (boostedtravel-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept