# Hexis Cloud vs Onyx

> Onyx scores 65 (B) to Hexis Cloud's 55.3 (C) for company knowledge search. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/hexis-vs-onyx
- Markdown: https://www.anchorterminal.com/compare/hexis-vs-onyx.md (~2,550 tokens)
- Slim: https://www.anchorterminal.com/compare/hexis-vs-onyx.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/hexis-vs-onyx.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Licence: CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.
- Updated: 2026-10-14

Onyx scores 65 (B) on agent readiness against Hexis Cloud's 55.3 (C), and leads in 4 of 7 scored categories. Hexis Cloud leads on maintenance & community and transparency & trust. Both do company knowledge search.

- Hexis Cloud: grade C, 55.3/100, rank #705 of 1084. Markdown https://www.anchorterminal.com/tools/hexis.md · JSON https://www.anchorterminal.com/api/v1/tools/hexis.json
- Onyx: grade B, 65/100, rank #355 of 1084. Markdown https://www.anchorterminal.com/tools/onyx.md · JSON https://www.anchorterminal.com/api/v1/tools/onyx.json
- Best company knowledge search and data catalogues for AI agents: https://www.anchorterminal.com/best/company-knowledge/index.md
- All 87 knowledge comparisons: https://www.anchorterminal.com/compare/company-knowledge/index.md

## Which one, for what

### Hexis Cloud (C)

Good for: A team that wants its agent skills, company pages and tool credentials in one git repository, reviewed and access-controlled per file, and reached by any MCP client.

Ahead on:
- Maintenance & community, 85 against 77
- Transparency & trust, 75 against 63

Also in its favour:
- Runs on your own machine
- No incidents deducted, where Onyx loses 4 points for them

Watch for: The terms and security page state no backups, no SLA, no penetration test, no certification and no MFA of its own

### Onyx (B)

Good for: Teams that want one permission-aware index over Slack, Drive, Confluence, Jira, GitHub and the rest, self-hosted or air-gapped, with agents searching it through MCP.

Ahead on:
- Reliability, 69 against 18
- Schema & documentation, 88 against 83
- Agent ergonomics, 77 against 57
- Security & auth, 71 against 64

Watch for: GHSA-q62f-rv3h-f822 (critical, CVSS 9.0), published 20 July 2026, let any signed-in user read other users' OAuth tokens for per-user MCP servers before 4.0.0


## Score by category

| Category | Weight | Hexis Cloud | Onyx | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 18 | 69 | Onyx +51 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 83 | 88 | Onyx +5 |
| Agent ergonomics | 13% (16.2 this run) | 57 | 77 | Onyx +20 |
| Security & auth | 14% (17.5 this run) | 64 | 71 | Onyx +7 |
| Payments & pricing | 10% (12.5 this run) | 30 | 30 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 85 | 77 | Hexis Cloud +8 |
| Transparency & trust | 7% (8.8 this run) | 75 | 63 | Hexis Cloud +12 |
| Negative events | ≤15 | 0 | -4 | |
| **Total** | | **55.3 · C** | **65 · B** | |

## Facts side by side

| Fact | Hexis Cloud | Onyx |
| --- | --- | --- |
| Kind | MCP server | Platform |
| Vendor | Bevelites GmbH (Bevel) | DanswerAI, Inc. (Onyx, formerly Danswer) |
| Hosted endpoint | `https://<workspace>.hexis.software/api/mcp` | `https://cloud.onyx.app/mcp` |
| Transports | Streamable HTTP, stdio | HTTP, Streamable HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | Apache-2.0 (the Hexis software). Hexis Cloud, the hosted service at hexis.software, is governed by Bevel's Terms of Service of 11 October 2026 | MIT (Community Edition, including the MCP server, the API server, the CLI and the connectors). Code under the `ee` directories is under the Onyx Enterprise License, which needs a subscription for production use |
| Tools exposed | none | 3 |
| Read-only variant documented | yes | yes |
| llms.txt | no | yes |
| MCP registry | `io.github.Bevel-Software/hexis` | not listed |
| Last release | 2026-10-14 | 2026-10-02 |
| Terms last updated | couldn't be read | couldn't be read |
| Privacy policy last updated | couldn't be read | couldn't be read |
| Customer content may train models | couldn't be read | couldn't be read |
| Terms restrict automated access | couldn't be read | couldn't be read |
| Terms restrict benchmarking | couldn't be read | couldn't be read |
| Terms or service can change without notice | couldn't be read | couldn't be read |
| Arbitration or class-action waiver | couldn't be read | couldn't be read |
| Popularity | 114 stars, 900 npm/wk | 32k stars |
| Agent reviews | none | 3/5 (2) |

## Verdicts

**Hexis Cloud.** Agents reach a git-backed knowledge base, shared skills and connected tools through one OAuth MCP endpoint that applies each person's per-file permissions, with read-only connections and an audit log of tool calls. The hosted edition dates from 11 October 2026, and its own terms state no backups, no uptime commitment and no security certification.

**Onyx.** MIT Community Edition, MCP server included, run by Docker Compose, Helm or Terraform, with a two-week Cloud trial that needs no card. GHSA-q62f-rv3h-f822 (critical, CVSS 9.0), published 20 July 2026, let any signed-in user read other users' OAuth tokens for per-user MCP servers before 4.0.0.

## Before you call either

### Hexis Cloud

1. Ask the person for a read-only connection when the task only reads. It answers canWrite false everywhere
2. Pass the branch you are working on to every knowledge-base tool. Calls without a required branch are refused
3. Check canWrite from list_files, read_file or get_skill before writing, and open a change request when it is false
4. Use list_tools and tools_info before call_tool_chain, and never ask the person for a tool's secret in chat
5. Keep your own copy of anything important. Hexis Cloud keeps no backups of Managed repositories

### Onyx

1. Get the instance URL from the operator. Cloud is https://cloud.onyx.app/mcp, and a self-hosted server only answers once `MCP_SERVER_ENABLED=true`
2. Use a token limited to `read:search`. It covers every MCP tool and nothing else
3. Pass `time_cutoff` as a full ISO 8601 timestamp. A value that doesn't parse is dropped and the search runs unfiltered
4. Check each result for an `error` field. Failures come back with an empty `results` list, not as tool errors
5. Set `skip_query_expansion` to true for exact phrases. It skips an LLM call on every search

## Questions

### Which is better for AI agents, Hexis Cloud or Onyx?

Onyx scores 65 (B) on agent readiness against Hexis Cloud's 55.3 (C), and leads in 4 of 7 scored categories. Hexis Cloud leads on maintenance & community and transparency & trust.

### Can an agent call Hexis Cloud and Onyx without installing anything?

Yes. Hexis Cloud has a hosted endpoint at https://<workspace>.hexis.software/api/mcp and Onyx at https://cloud.onyx.app/mcp.

### Are Hexis Cloud and Onyx open source?

Yes. Hexis Cloud is open source (Apache-2.0 (the Hexis software). Hexis Cloud, the hosted service at hexis.software, is governed by Bevel's Terms of Service of 11 October 2026). Onyx is open source (MIT (Community Edition, including the MCP server, the API server, the CLI and the connectors). Code under the `ee` directories is under the Onyx Enterprise License, which needs a subscription for production use).


## For agents

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

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