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Boundary Guard Agent Handoff
x402
Boundary Guard Agent Handoff is a paid API for AI agents from boundary-guard-x402.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Validates, risk-scans, and authorizes an inter-agent handoff by checking payload safety, extracting structured data, redacting PII, and issuing a cryptographic Boundary Receipt with a routing decision.
Price / call$0.01
Success—
StatusUnknown
Output
Returns a structured JSON object containing: a risk score with any flagged issues, an allow/deny decision, a sanitized version of the task, a cryptographic Boundary Receipt with receipt_id and SHA256 hashes, agent routing info (to/from agent identifiers), per-check results (e.g. risk.scan pass/fail), retryability flag, and a recommended_action such as 'proceed_with_handoff'.
Example use cases
Example prompt
“Before handing off this wallet funding task to the coinbase:wallet-agent, run a Boundary Guard risk scan and get an Agent Handoff Receipt — the task is: 'Prepare a wallet funding request, but do not broadcast anything yet', coming from virtuals:researcher.alice, and validate it against my task schema.”
Technical details
Endpoint
POSThttps://boundary-guard-x402.onrender.com/agent-handoffWhen to prefer
Use this endpoint when an AI agent needs to safely hand off a task to another agent in a multi-agent pipeline and requires runtime trust enforcement: risk scanning, PII redaction, schema normalization, and an auditable cryptographic receipt. Prefer this over simple forwarding when compliance, auditability, or safety guardrails around sensitive tasks (e.g. financial operations) are required.
Side effects
- Missing required 'data' or 'schema' fields returns a 400 validation error
- Payment not included or invalid results in 402 Payment Required
- Schema mismatch between provided data and schema causes normalization failure
- High risk score results in decision='deny' with reasons listed
- Service unavailable on Render free tier causes cold-start delays or 503 errors
Tags
x402
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