Cipher (byterover) (now ByteRover CLI)
https://github.com/campfirein/byterover-cli
Renamed ByteRover CLI (brv); repo campfirein/byterover-cli archived read-only 2026-09-27, license changed to Elastic License 2.0. Opensource memory layer focused on programming agents — works with Cursor, Windsurf, Claude Code, Roo Code via MCP. Maintains a coding-context memory across sessions and across IDEs.
Archived · Verified 2026-10-29 · fresh as of 2026-10-29 · 18 cited facts, 2 with a third-party source · 2 recorded changes · Suggest a correction
At a glance
- Type
- Cross-IDE memory layer (vector + KG) repo fix
- Tier
- T2
- Section
- Dedicated memory layers
- Latest release
- v3.16.1 (2026-05-27) third-party fix
- License
- Elastic-2.0 repo fix
- Pricing
- searched not found fix
- Funding
- searched not found fix
- Freshness
- 2026-10-29 fix
- Layer
- agent-infra repo fix
- Licensing
- commercial repo fix
- Developer activity
- OpenRank 1.03 (12-mo avg 4.66) · 1 participants — 2026-09 third-party fix
Memory taxonomy
- storage
- vector
- retrieval
- similarity
- persistence
- long-term
- update
- extraction
- unit
- fact
- governance
- opaque
- conflict
- n/a
When to use
Optimised for: searched not found
Anti-fit: searched not found
Pros & cons
Pros
searched not found
Cons
searched not found
Claims & capabilities
Built by byterover; aims to be the OSS standard memory for IDE-based coding agents.
Technical surface
- API surface
- searched not found
- Backend storage
- searched not found
- Deployment
- Local CLI (works offline with own/local LLM provider); optional ByteRover cloud for team sync and backup
- Embedding model
- searched not found
- Multi-tenancy
- searched not found
- MCP
- native (first-party MCP server)
- A2A
- searched not found
- OpenTelemetry
- searched not found
Alternatives to Cipher (byterover) (now ByteRover CLI) → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other dedicated memory layers in the catalog, ranked by inbound references.
- Mem0 T1
Universal memory layer for AI agents. Three concurrent stores (vector + graph + KV); LLM-extracted facts; concurrent retrieval via ThreadPoolExecutor.
- Zep & Graphiti T1
Bi-temporal knowledge graph (event time + ingestion time). Strong on chronological reasoning and contradiction tracking. Graphiti is the open-source core.
- Cognee T1
"Extract–Cognify–Load" pipeline that turns raw input into a typed, queryable knowledge graph for agent recall.
- Hindsight (Vectorize) T1
Standalone memory service from Vectorize. Open source. Biomimetic four-network design (World, Bank, Observation, Opinion). Ships an MCP memory server.
- Letta / MemGPT T1
Originated as MemGPT (UC Berkeley), where the model pages its own memory between context, recall and archival tiers. The product now centres on Letta Code, a stateful agent harness whose agents rewrite their own memory, skills and prompts over time.
- Memori T2
Structured, persistent memory layer for AI agents. Open source.
Sources (17 cited facts, 2 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Cross-IDE memory layer (vector + KG) repo
- What it does & what's distinct Renamed ByteRover CLI (brv); repo campfirein/byterover-cli archived read-only 2026-09-27… repo
- Claims / benefits Built by byterover; aims to be the OSS standard memory for IDE-based coding agents. repo
- Created 2025-04 repo
- Latest release v3.16.1 (2026-05-27) third-party
- License Elastic-2.0 repo
- GitHub campfirein/byterover-cli (formerly cipher) — ~5.0k stars, archived 2026-09 repo
- Deployment Local CLI (works offline with own/local LLM provider); optional ByteRover cloud for team… vendor
- Code/weights release Code public (source-available, Elastic-2.0); repo archived 2026-09-27 · ~5.0k stars repo
- MCP support native (first-party MCP server) repo
- commit-trajectory [{"ym":"2026-02","cum":2018},{"ym":"2026-03","cum":2522},{"ym":"2026-04","cum":2847},{"y… repo
- download-trajectory [{"ym":"2023-05","monthly":0,"cum":0},{"ym":"2023-06","monthly":0,"cum":0},{"ym":"2023-0… registry
- architecture-deployment-locus local repo
- licensing-bucket commercial repo
- positioning-platform-vs-product product repo
- taxonomy-three-layer-rollup agent-infra repo
- developer-activity-opendigger {"activity":1.02,"as_of":"2026-09","openrank_12mo":4.66,"openrank_current":1.03,"partici… third-party
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
- 2026-10-23
- Name “Cipher (byterover)” → “Cipher (byterover) (now ByteRover CLI)”
- Homepage “https://github.com/campfirein/cipher” → “https://github.com/campfirein/byterover-cli”
- 2026-10-22
- Lifecycle first recorded as “archived”
- License “MIT” → “Elastic-2.0” source
- Latest release first recorded as “v3.16.1 (2026-05-27)” source
- Deployment first recorded as “Local CLI (works offline with own/local LLM provider); optional ByteRover cloud for team sync and backup” source
Related systems
References (1)
- Model Context Protocol (MCP spec) depends on at runtime — Opensource memory layer focused on programming agents — works with Cursor, Windsurf, Claude Code, Roo Code via MCP. Maintains a coding-context memory across sessions and across IDEs.