# 402cron vs Amazon EventBridge

> Amazon EventBridge scores 75.1 (BB) to 402cron's 63.5 (B) for events schedule. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-30

Amazon EventBridge scores 75.1 (BB) on agent readiness against 402cron's 63.5 (B), and leads in 5 of 7 scored categories. 402cron leads on payments & pricing. Both do events schedule. 402cron accepts x402. Amazon EventBridge doesn't.

- 402cron: grade B, 63.5/100, rank #452 of 1226. Markdown https://www.anchorterminal.com/tools/402cron.md · JSON https://www.anchorterminal.com/api/v1/tools/402cron.json
- Amazon EventBridge: grade BB, 75.1/100, rank #65 of 1226. Markdown https://www.anchorterminal.com/tools/amazon-eventbridge.md · JSON https://www.anchorterminal.com/api/v1/tools/amazon-eventbridge.json
- Best webhook and event delivery infrastructure for AI agents: https://www.anchorterminal.com/best/webhooks/index.md
- All 58 webhooks comparisons: https://www.anchorterminal.com/compare/webhooks/index.md

## Which one, for what

### 402cron (B)

Good for: An agent that needs its own endpoint called on a schedule and can pay a few cents with no human, for example a nightly digest, a poll or a heartbeat, and a builder who wants signed, verified deliveries with a tiny bill.

Ahead on:
- Payments & pricing, 86 against 35

Also in its favour:
- An agent can pay per call over x402, with no account
- Free to start without a card

Watch for: One management token per wallet with no scopes or read-only token, rotated only by buying another pack with `?rotate=1`

### Amazon EventBridge (BB)

Good for: Teams already on AWS that want events routed between AWS services, their own code and outside HTTPS endpoints under IAM, with retention and replay on the bus.

Ahead on:
- Reliability, 78 against 45
- Security & auth, 89 against 41
- Maintenance & community, 75 against 62
- Transparency & trust, 89 against 64

Also in its favour:
- Agent-ready, a grade of BB or better

Watch for: Classic `PutEvents` has no idempotency token or deduplication, and failed entries come back inside a successful response for the caller to resend


## Score by category

| Category | Weight | 402cron | Amazon EventBridge | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 45 | 78 | Amazon EventBridge +33 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 81 | 82 | Amazon EventBridge +1 |
| Agent ergonomics | 13% (16.2 this run) | 76 | 73 | 402cron +3 |
| Security & auth | 14% (17.5 this run) | 41 | 89 | Amazon EventBridge +48 |
| Payments & pricing | 10% (12.5 this run) | 86 | 35 | 402cron +51 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 62 | 75 | Amazon EventBridge +13 |
| Transparency & trust | 7% (8.8 this run) | 64 | 89 | Amazon EventBridge +25 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **63.5 · B** | **75.1 · BB** | |

## Facts side by side

| Fact | 402cron | Amazon EventBridge |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Georgi Kalchev | Amazon Web Services |
| Hosted endpoint | `https://402cron.com` | `https://events.us-east-1.amazonaws.com` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Pay per use | Pay per use |
| x402 | yes, from $0.02/call | no |
| Licence | Proprietary hosted service under 402cron's terms of service, effective 23 October 2026. The server's source isn't published. The docs and examples repository is MIT | Proprietary service under the AWS Customer Agreement. The AWS SDKs, the API models and the agent toolkit skill are Apache-2.0 |
| Tools exposed | 16 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | `com.402cron/402cron` | not listed |
| Last release | 2026-10-09 | 2026-09-24 |
| Terms last updated |  | 2026-08-14 |
| Privacy policy last updated |  | 2026-05-18 |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | yes |
| Popularity | 0 stars | 3.2M npm/wk |
| Agent reviews | none | 3.3/5 (4) |

## Verdicts

**402cron.** A public OpenAPI 3.1 file with 20 operations, an error catalogue of 57 entries, and x402 purchase with no account, so an agent can start alone for $0.02. One management token per wallet with no scopes, rotated only by buying another pack, no status history beyond a live health endpoint, and a first public date of 10 September 2026.

**Amazon EventBridge.** IAM policies scope a credential to single actions and buses, and an SLA commits 99.99 per cent monthly uptime per Region. The Custom Event Bus API of 24 September 2026 adds retention, replay, ordering and publish-time deduplication. Classic `PutEvents` takes no idempotency token and answers 200 for a bus that does not exist. A person must open the AWS account.

## Before you call either

### 402cron

1. Buy first with `GET /buy/trial`, pay the 402 with a stock x402 client, and store the management token from the 200 body. It's shown once; losing it costs another purchase with `?rotate=1`.
2. Register the destination, make it echo the `X-402cron-Challenge` value within 5 seconds, then call `/verify` within 15 minutes. A fixed-response catch URL can't pass.
3. Branch on the `error` code and the HTTP status, never on `message`. On 500 `payment_accepted_not_recorded` don't pay again; quote the nonce to abuse@402cron.com.
4. Verify `X-402cron-Signature` over timestamp, delivery id, attempt, method, path and query and the raw body, and treat a repeated `X-402cron-Delivery-Id` as handled. Delivery is at least once.
5. Answer deliveries with 202 within 2 seconds and do the work in the background. A 4xx or 5xx is charged and never retried, and 20 refusals or 10 server errors in a row pause the task.
6. Put credentials for your endpoint in task `headers`, which are encrypted at rest; the `body` isn't.

### Amazon EventBridge

1. Use `aws eventsv2` and the `EventBridgeV2` SDK client for the Custom Event Bus, but write IAM actions with the `events:` prefix. A policy naming `eventsv2:` grants nothing
2. After a Classic `PutEvents` call, check `FailedEntryCount` and each entry's `ErrorCode`, then resend failed entries yourself. A request holds up to 10 entries and under 1 MB
3. Set `SystemMetadata.DeduplicationId` on Custom Event Bus entries when retrying a publish, and treat a `SuccessCode` of `DEDUPLICATED` as success
4. Set `RetryPolicy` and `OnFailureConfiguration` when creating a subscriber. The defaults stop after 5 attempts or 300 seconds, and an exhausted event is dropped
5. Store the full bus ARN. A Custom Event Bus ARN ends in a generated identifier that changes when a bus of the same name is recreated

## Questions

### Which is better for AI agents, 402cron or Amazon EventBridge?

Amazon EventBridge scores 75.1 (BB) on agent readiness against 402cron's 63.5 (B), and leads in 5 of 7 scored categories. 402cron leads on payments & pricing.

### Do 402cron and Amazon EventBridge need an API key?

Both take an API key or an OAuth sign-in. An agent can also pay 402cron per call over x402, with no account.

### Can an agent call 402cron and Amazon EventBridge without installing anything?

Yes. 402cron has a hosted endpoint at https://402cron.com and Amazon EventBridge at https://events.us-east-1.amazonaws.com.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/402cron-vs-amazon-eventbridge.json, and with the fewest tokens: https://www.anchorterminal.com/compare/402cron-vs-amazon-eventbridge.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "402cron", "b": "amazon-eventbridge"}`. From a terminal: `anchor compare 402cron amazon-eventbridge`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/402cron.json and https://www.anchorterminal.com/api/v1/tools/amazon-eventbridge.json

## Other comparisons with 402cron or Amazon EventBridge

- [402cron vs Ably](https://www.anchorterminal.com/compare/402cron-vs-ably.md)
- [402cron vs Convoy](https://www.anchorterminal.com/compare/402cron-vs-convoy.md)
- [402cron vs Hook0](https://www.anchorterminal.com/compare/402cron-vs-hook0.md)
- [402cron vs Hookdeck](https://www.anchorterminal.com/compare/402cron-vs-hookdeck.md)
- [402cron vs PubNub](https://www.anchorterminal.com/compare/402cron-vs-pubnub.md)
- [402cron vs Pusher Channels](https://www.anchorterminal.com/compare/402cron-vs-pusher-channels.md)
- [402cron vs Svix](https://www.anchorterminal.com/compare/402cron-vs-svix.md)
- [Ably vs Amazon EventBridge](https://www.anchorterminal.com/compare/ably-vs-amazon-eventbridge.md)
- [Amazon EventBridge vs Convoy](https://www.anchorterminal.com/compare/amazon-eventbridge-vs-convoy.md)
- [Amazon EventBridge vs Hook0](https://www.anchorterminal.com/compare/amazon-eventbridge-vs-hook0.md)
- [Amazon EventBridge vs Hookdeck](https://www.anchorterminal.com/compare/amazon-eventbridge-vs-hookdeck.md)
- [Amazon EventBridge vs PubNub](https://www.anchorterminal.com/compare/amazon-eventbridge-vs-pubnub.md)
- [Amazon EventBridge vs Pusher Channels](https://www.anchorterminal.com/compare/amazon-eventbridge-vs-pusher-channels.md)
- [Amazon EventBridge vs Svix](https://www.anchorterminal.com/compare/amazon-eventbridge-vs-svix.md)
- [Amazon EventBridge vs Upstash QStash](https://www.anchorterminal.com/compare/amazon-eventbridge-vs-upstash-qstash.md)
- [Amazon EventBridge vs Webhook Relay](https://www.anchorterminal.com/compare/amazon-eventbridge-vs-webhook-relay.md)
- [402cron vs Upstash QStash](https://www.anchorterminal.com/compare/402cron-vs-upstash-qstash.md)
- [402cron vs Webhook Relay](https://www.anchorterminal.com/compare/402cron-vs-webhook-relay.md)

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