---
title: "Submit a UserOperation"
method: POST
path: "/api/v1/settlement/userop"
tags: ["settlement"]
---

# Submit a UserOperation

`POST /api/v1/settlement/userop`

Constructs and submits an ERC-4337 UserOperation through the bundler RPC, routed through the AgentPolicyPaymaster for gas sponsorship. The paymaster validates policy compliance before sponsoring.

## Response `200`

UserOp submission result with hash and receipt

---

[API](https://skmtc.net/humbleaf/apis/agentchain-prior-api.md) · [All operations](https://skmtc.net/humbleaf/apis/agentchain-prior-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/humbleaf/agentchain-prior-api/revisions/33dd194c5572/schema)