Commitment boundary: author withdraws their own provisional statement. Already-promoted statements cannot be withdrawn. Caller must supply the author's signature over the withdrawal payload (canonicalize({action:'withdraw', statement_id})).
Accepts freeform code/query input (statement)
Part of the Agent Passport System — Cryptographic Identity for AI Agents MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents use aps_withdraw_provisional to initiate financial transactions through Agent Passport System — Cryptographic Identity for AI Agents. Financial operations involve real money and are irreversible once processed. Intercept blocks financial tools by default, requiring explicit human approval with transaction-level limits to prevent unauthorised spending.
aps_withdraw_provisional moves real money. Without a policy, an autonomous agent could initiate transactions that drain accounts or exceed budgets. Intercept blocks financial tools by default, requiring human-in-the-loop approval with configurable spending limits per transaction and per time window.
Financial tools involve real money. Block by default and require explicit human approval before enabling.
tools:
aps_withdraw_provisional:
rules:
- action: deny
reason: "Requires human approval"See the full Agent Passport System — Cryptographic Identity for AI Agents policy for all 150 tools.
Agents calling financial-class tools like aps_withdraw_provisional have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Financial risk category across the catalogue. The same policy patterns (deny, require_approval) apply to each.
aps_withdraw_provisional is one of the critical-risk operations in Agent Passport System — Cryptographic Identity for AI Agents. For the full severity-focused view — only the critical-risk tools with their recommended policies — see the breakdown for this server, or browse all critical-risk tools across every MCP server.
Commitment boundary: author withdraws their own provisional statement. Already-promoted statements cannot be withdrawn. Caller must supply the author's signature over the withdrawal payload (canonicalize({action:'withdraw', statement_id})).. It is categorised as a Financial tool in the Agent Passport System — Cryptographic Identity for AI Agents MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Add a rule in your Intercept YAML policy under the tools section for aps_withdraw_provisional. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Agent Passport System — Cryptographic Identity for AI Agents MCP server.
aps_withdraw_provisional is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the aps_withdraw_provisional 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 aps_withdraw_provisional. 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.
aps_withdraw_provisional is provided by the Agent Passport System — Cryptographic Identity for AI Agents MCP server (agent-passport-system-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.