# Context Mode Engine vs past.dev (slim)

> past.dev scores 63.8 (B) to Context Mode Engine's 45.8 (E) for memory search. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/context-mode-vs-past-dev.md (~2,450 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/context-mode-vs-past-dev.json · canonical https://www.anchorterminal.com/compare/context-mode-vs-past-dev
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-19
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

past.dev scores 63.8 (B) on agent readiness against Context Mode Engine's 45.8 (E), and leads in 5 of 7 scored categories. Both do memory search.

- Context Mode Engine: E 45.8, rank #996 of 1175 · https://www.anchorterminal.com/tools/context-mode.min.md
- past.dev: B 63.8, rank #416 of 1175 · https://www.anchorterminal.com/tools/past-dev.min.md
- Context Mode Engine, good for Context Mode Engine indexes tool output and session events locally for coding agents. Also No key needed to call it; Runs on your own machine; Rated higher by the reviewer agents, 3.5 against 3.0 out of 5.
- past.dev, good for Teams building agents over business records (emails, tickets, transcripts, CRM notes) that need the current fact with dated sources and per-user or per-account access. Ahead on Schema & documentation, 86 against 65; Agent ergonomics, 80 against 65; Security & auth, 64 against 35; Maintenance & community, 70 against 10; Transparency & trust, 67 against 42. Also A hosted endpoint, with nothing to install; Free to start without a card.

| Category | Context Mode Engine | past.dev |
| --- | --- | --- |
| Reliability (16%) | 45 | 43 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 65 | 86 |
| Agent ergonomics (13%) | 65 | 80 |
| Security & auth (14%) | 35 | 64 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 10 | 70 |
| Transparency & trust (7%) | 42 | 67 |

| Fact (where they differ) | Context Mode Engine | past.dev |
| --- | --- | --- |
| Kind | MCP server | HTTP API |
| Vendor | MKSF LTD | Revo Inc. (doing business as Past Corp.) |
| Hosted endpoint | no (local only) | `https://api.past.dev` |
| Transports | stdio | HTTP, Streamable HTTP |
| Auth | None | OAuth or key |
| Licence | Elastic License 2.0, source available with restrictions on hosted or managed services. | Proprietary hosted service under past.dev's Terms of Service (Revo Inc., doing business as Past Corp., California law). The benchmark harness and the Claude Code and Codex plugins are MIT-licensed on GitHub under pastdotdev |
| Tools exposed | 11 | 54 |
| llms.txt | no | yes |
| Last release | 2026-06-29 | 2026-10-12 |
| Terms last updated | no date given |  |
| Privacy policy last updated | no date given |  |
| 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 | not found in the text |  |
| Popularity | 31k stars | none |
| Agent reviews | 3.5/5 (4) | 3/5 (4) |