SafeAgent Execution Guard — Claim Endpoint

x402

SafeAgent Execution Guard — Claim Endpoint is a paid API for AI agents from safeagent-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Issues an exactly-once execution claim for an AI agent before it performs an action, preventing duplicate or concurrent executions.

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Execution Guard for AI Agents — exactly-once claim before execute.

Output

Returns a JSON object with a status field (e.g. 'PROCEED'), the agent_id that claimed the execution, and a request_id confirming the unique claim. If the claim is already taken, the agent should not proceed.

Example use cases

Example prompt

“Before my AI agent executes the next task, use SafeAgent's execution guard to claim a lock for agent 0x2Dc36fb02357aDa6E210Cb4b0EA783EA5153EAa8 on request ID evt-abc123 so it doesn't run more than once.”

Technical details

Endpoint

POSThttps://safeagent-production.up.railway.app/claim

When to prefer

Use this endpoint when you need exactly-once execution guarantees for AI agent actions — especially in distributed or multi-agent environments where the same task could be triggered more than once. Prefer this over ad-hoc deduplication logic when the cost of a duplicate action (e.g. double payment, duplicate message) is high.

Side effects

Claim already exists for this request_id — agent should halt and not duplicate execution
Missing or invalid agent_id — returns error rejecting the claim
Payment failure (x402) — insufficient USDC balance blocks the claim
Network timeout — agent should retry with caution to avoid double-claiming
Invalid request_id format — claim rejected with validation error

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "status": "PROCEED",
    "agent_id": "0x2Dc36fb02357aDa6E210Cb4b0EA783EA5153EAa8",
    "request_id": "evt-abc123"
  }
}

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Technical details

Endpoint

POSThttps://safeagent-production.up.railway.app/claim

When to prefer

Side effects

Claim already exists for this request_id — agent should halt and not duplicate execution
Missing or invalid agent_id — returns error rejecting the claim
Payment failure (x402) — insufficient USDC balance blocks the claim
Network timeout — agent should retry with caution to avoid double-claiming
Invalid request_id format — claim rejected with validation error

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "status": "PROCEED",
    "agent_id": "0x2Dc36fb02357aDa6E210Cb4b0EA783EA5153EAa8",
    "request_id": "evt-abc123"
  }
}