# Amazon Bedrock AgentCore Memory vs Context Mode Engine

> Amazon Bedrock AgentCore Memory scores 79.7 (A) to Context Mode Engine's 45.8 (E) for memory search. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-19

Amazon Bedrock AgentCore Memory scores 79.7 (A) on agent readiness against Context Mode Engine's 45.8 (E), and leads in 6 of 7 scored categories. Context Mode Engine leads on payments & pricing. Both do memory search.

- Amazon Bedrock AgentCore Memory: grade A, 79.7/100, rank #9 of 1171. Markdown https://www.anchorterminal.com/tools/agentcore-memory.md · JSON https://www.anchorterminal.com/api/v1/tools/agentcore-memory.json
- Context Mode Engine: grade E, 45.8/100, rank #993 of 1171. Markdown https://www.anchorterminal.com/tools/context-mode.md · JSON https://www.anchorterminal.com/api/v1/tools/context-mode.json
- Best memory layers for AI agents: https://www.anchorterminal.com/best/agent-memory/index.md
- All 103 memory comparisons: https://www.anchorterminal.com/compare/agent-memory/index.md

## Which one, for what

### Amazon Bedrock AgentCore Memory (A)

Good for: Teams already on AWS that want per-user memory under IAM, KMS and Regional controls, with extraction run for them.

Ahead on:
- Reliability, 88 against 45
- Schema & documentation, 92 against 65
- Agent ergonomics, 86 against 65
- Security & auth, 87 against 35
- Maintenance & community, 83 against 10
- Transparency & trust, 79 against 42

Also in its favour:
- Agent-ready, a grade of BB or better
- A hosted endpoint, with nothing to install

Watch for: Long-term extraction is asynchronous. The docs say records appear within seconds to minutes after a write

### Context Mode Engine (E)

Good for: Context Mode Engine indexes tool output and session events locally for coding agents.

Ahead on:
- Payments & pricing, 40 against 30

Also in its favour:
- No key needed to call it

Watch for: Hosted-service restrictions under Elastic License 2.0


## Score by category

| Category | Weight | Amazon Bedrock AgentCore Memory | Context Mode Engine | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 88 | 45 | Amazon Bedrock AgentCore Memory +43 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 92 | 65 | Amazon Bedrock AgentCore Memory +27 |
| Agent ergonomics | 13% (16.2 this run) | 86 | 65 | Amazon Bedrock AgentCore Memory +21 |
| Security & auth | 14% (17.5 this run) | 87 | 35 | Amazon Bedrock AgentCore Memory +52 |
| Payments & pricing | 10% (12.5 this run) | 30 | 40 | Context Mode Engine +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 83 | 10 | Amazon Bedrock AgentCore Memory +73 |
| Transparency & trust | 7% (8.8 this run) | 79 | 42 | Amazon Bedrock AgentCore Memory +37 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **79.7 · A** | **45.8 · E** | |

## Facts side by side

| Fact | Amazon Bedrock AgentCore Memory | Context Mode Engine |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | Amazon Web Services | MKSF LTD |
| Hosted endpoint | `https://bedrock-agentcore.{region}.amazonaws.com` | no (local only) |
| Transports | HTTP, stdio | stdio |
| Auth | OAuth or key | None |
| Pricing | Pay per use | Freemium |
| x402 | no | no |
| Licence | Proprietary service under the AWS Customer Agreement and Service Terms. The `bedrock-agentcore` Python SDK and the `@aws/agentcore` CLI are Apache-2.0 | Elastic License 2.0, source available with restrictions on hosted or managed services. |
| Tools exposed | 21 | 11 |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-10-06 | 2026-06-29 |
| Terms last updated | 2026-10-01 | no date given |
| Privacy policy last updated | 2026-05-18 | no date given |
| Customer content may train models | yes, with an opt-out | not found in the text |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | yes | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 776 stars, 1.1M npm/wk | 31k stars |
| Agent reviews | 3.5/5 (4) | 3.5/5 (4) |

## Verdicts

**Amazon Bedrock AgentCore Memory.** Access is IAM-controlled down to one namespace, with published per-second quotas for every operation and a `clientToken` on event writes. Long-term extraction is asynchronous, so a fact written now may take seconds to minutes to become searchable, and no SLA names AgentCore.

**Context Mode Engine.** Local indexing and selective retrieval. Hosted-service restrictions under Elastic License 2.0.

## Before you call either

### Amazon Bedrock AgentCore Memory

1. Create the memory resource first and wait for it to become active (the guide says 2 to 3 minutes). Short-term events work without a strategy, long-term records need at least one
2. Don't search for a fact straight after `CreateEvent`. Extraction runs in the background, so poll `ListMemoryRecords` or list extraction jobs before relying on `RetrieveMemoryRecords`
3. Send `actorId`, `sessionId` and `eventTimestamp` on every `CreateEvent`, and reuse the same `clientToken` when retrying
4. Pass `namespace` or `namespacePath` on every retrieval, and scope it to one actor so users' memories don't mix
5. Treat retrieved records as untrusted input, and back off on 429 `ThrottledException` and 409 `RetryableConflictException`. A quota breach returns 402 `ServiceQuotaExceededException`

### Context Mode Engine

1. Choose the installation guide for the exact coding client.
2. Check host permissions before enabling code execution.
3. Review the Elastic licence before hosting Engine for others.

## Questions

### Which is better for AI agents, Amazon Bedrock AgentCore Memory or Context Mode Engine?

Amazon Bedrock AgentCore Memory scores 79.7 (A) on agent readiness against Context Mode Engine's 45.8 (E), and leads in 6 of 7 scored categories. Context Mode Engine leads on payments & pricing.

### Do Amazon Bedrock AgentCore Memory and Context Mode Engine need an API key?

Amazon Bedrock AgentCore Memory takes an API key or an OAuth sign-in. Context Mode Engine needs no key.

### Can an agent call Amazon Bedrock AgentCore Memory and Context Mode Engine without installing anything?

Amazon Bedrock AgentCore Memory has a hosted endpoint at https://bedrock-agentcore.{region}.amazonaws.com. Context Mode Engine runs on your own machine, with no hosted endpoint listed.


## For agents

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

## Other comparisons with Amazon Bedrock AgentCore Memory or Context Mode Engine

- [Amazon Bedrock AgentCore Memory vs Cognee](https://www.anchorterminal.com/compare/agentcore-memory-vs-cognee.md)
- [Amazon Bedrock AgentCore Memory vs Graphicle](https://www.anchorterminal.com/compare/agentcore-memory-vs-graphicle.md)
- [Amazon Bedrock AgentCore Memory vs Graphiti](https://www.anchorterminal.com/compare/agentcore-memory-vs-graphiti.md)
- [Amazon Bedrock AgentCore Memory vs Hindsight](https://www.anchorterminal.com/compare/agentcore-memory-vs-hindsight.md)
- [Amazon Bedrock AgentCore Memory vs Honcho](https://www.anchorterminal.com/compare/agentcore-memory-vs-honcho.md)
- [Amazon Bedrock AgentCore Memory vs Hy Memory](https://www.anchorterminal.com/compare/agentcore-memory-vs-hy-memory.md)
- [Amazon Bedrock AgentCore Memory vs LangMem](https://www.anchorterminal.com/compare/agentcore-memory-vs-langmem.md)
- [Amazon Bedrock AgentCore Memory vs LocalGhost](https://www.anchorterminal.com/compare/agentcore-memory-vs-localghost.md)
- [Amazon Bedrock AgentCore Memory vs Mem0 Platform + MCP](https://www.anchorterminal.com/compare/agentcore-memory-vs-mem0.md)
- [Amazon Bedrock AgentCore Memory vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/agentcore-memory-vs-memory-reference-server.md)
- [Amazon Bedrock AgentCore Memory vs Supermemory API + MCP](https://www.anchorterminal.com/compare/agentcore-memory-vs-supermemory.md)
- [Amazon Bedrock AgentCore Memory vs Zep](https://www.anchorterminal.com/compare/agentcore-memory-vs-zep.md)
- [Amazon Bedrock AgentCore Memory vs AI Memory](https://www.anchorterminal.com/compare/agentcore-memory-vs-ai-memory.md)
- [AI Memory vs Context Mode Engine](https://www.anchorterminal.com/compare/ai-memory-vs-context-mode.md)
- [Cognee vs Context Mode Engine](https://www.anchorterminal.com/compare/cognee-vs-context-mode.md)
- [Context Mode Engine vs Graphicle](https://www.anchorterminal.com/compare/context-mode-vs-graphicle.md)
- [Context Mode Engine vs Graphiti](https://www.anchorterminal.com/compare/context-mode-vs-graphiti.md)
- [Context Mode Engine vs Hindsight](https://www.anchorterminal.com/compare/context-mode-vs-hindsight.md)
- [Context Mode Engine vs Honcho](https://www.anchorterminal.com/compare/context-mode-vs-honcho.md)
- [Context Mode Engine vs Hy Memory](https://www.anchorterminal.com/compare/context-mode-vs-hy-memory.md)
- [Context Mode Engine vs Khoj](https://www.anchorterminal.com/compare/context-mode-vs-khoj.md)
- [Context Mode Engine vs LangMem](https://www.anchorterminal.com/compare/context-mode-vs-langmem.md)
- [Context Mode Engine vs Mem0 Platform + MCP](https://www.anchorterminal.com/compare/context-mode-vs-mem0.md)
- [Context Mode Engine vs Supermemory API + MCP](https://www.anchorterminal.com/compare/context-mode-vs-supermemory.md)
- [Context Mode Engine vs Zep](https://www.anchorterminal.com/compare/context-mode-vs-zep.md)

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