# Cometh Connect Bundler API

**Canonical:** https://apis.io/apis/cometh/cometh-connect-bundler-api/  
**Provider:** Cometh — https://apis.io/providers/cometh/  
**Base URL:** https://bundler.cometh.io/{chainId}  
**Documentation:** https://docs.cometh.io/bundler/bundler-api

Cometh Connect Bundler API is one of 3 APIs that [Cometh](https://apis.io/providers/cometh/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include ERC-4337, Bundler, Account Abstraction, JSON-RPC, and Blockchain. The published artifact set on APIs.io includes API documentation, an API reference, and authentication docs.

ERC-4337 bundler JSON-RPC endpoint. Accepts User Operations into the mempool, estimates UserOp gas, returns a UserOp and its receipt by hash, and lists supported EntryPoint addresses. One endpoint per EVM chain, addressed by chain id in the path, authenticated with a project apikey in the query string.

## Machine-readable artifacts (5)

- **Documentation** — https://docs.cometh.io/bundler/bundler-api
- **APIReference** — https://docs.cometh.io/bundler/bundler-api
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/cometh/refs/heads/main/authentication/cometh-authentication.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/cometh/refs/heads/main/conventions/cometh-conventions.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/cometh/refs/heads/main/apis.yml

## Other Cometh APIs (2)

- [Cometh Connect Paymaster API](https://apis.io/apis/cometh/cometh-connect-paymaster-api/)
- [Cometh Connect API](https://apis.io/apis/cometh/cometh-connect-api/)

## Tags

ERC-4337, Bundler, Account Abstraction, JSON-RPC, Blockchain

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/cometh/cometh-connect-bundler-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/cometh/.