{ "data": { "a": { "slug": "langmem", "name": "LangMem", "vendor": "LangChain", "vendorUrl": "https://www.langchain.com", "kind": "sdk", "category": "agent-memory", "summary": "LangMem is LangChain's open-source Python library for long-term agent memory. It extracts facts from conversations with an LLM, stores and searches them in a LangGraph store the owner runs, and includes two memory tools, message summarisation and prompt optimisation.", "url": "https://www.anchorterminal.com/tools/langmem", "markdownUrl": "https://www.anchorterminal.com/tools/langmem.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/langmem.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/langmem.json", "repo": "https://github.com/langchain-ai/langmem", "license": "MIT", "transports": [], "packages": [ { "registry": "pypi", "name": "langmem" } ], "auth": "none", "authNotes": "The library has no account or key of its own. It runs in the owner's process and needs a key for the chosen LLM provider (the README uses `ANTHROPIC_API_KEY`) and, for semantic search, an embedding provider. Access to memories is whatever the owner's LangGraph store and namespace settings allow.", "pricing": "free", "pricingNotes": "Free under the MIT licence, with nothing to buy and no signup. The owner pays for the LLM calls that extract memories, the embedding calls behind search, and the database behind the store (https://github.com/langchain-ai/langmem).", "priceSummary": "Free · OSS", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs or the source (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 1698, "npmWeekly": null, "pypiWeekly": 214379, "asOf": "2026-10-08" }, "docsUrl": "https://langchain-ai.github.io/langmem/", "capabilities": [ "memory.store", "memory.search", "memory.user", "memory.delete" ], "tags": [ "sdk", "open-source", "self-hosted", "local", "python", "free", "langgraph", "pre-1.0" ], "lastRelease": "2025-10-27", "graded": true, "anchor": { "graded": true, "score": 47.9, "grade": "D", "agentReady": false, "rank": 734, "ranked": true, "rankOf": 842, "categoryRank": 9, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 66, "maintenance": 15, "payments": 60, "reliability": 32, "schema": 55, "security": 45, "transparency": 59 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "Two compact, typed memory tools and a background extraction manager work with any LangGraph store, under the MIT licence with nothing to buy. The newest PyPI release, 0.0.30, dates from 27 October 2025. The repository has no changelog, tags or test workflow, and 23 of 54 open issues have no reply.", "bestFor": "Teams already on LangGraph that want memory tools and background extraction over a store they run.", "strengths": [ "MIT licence, installed with `pip install -U langmem`, with no account, key or fee of its own", "Two agent tools, `manage_memory` and `search_memory`, with typed inputs, an action enum and `limit`, `offset` and `filter` on search", "`actions_permitted` limits the manage tool to any subset of create, update and delete, and `create_memory_store_manager` leaves deletes off by default", "Namespace templates such as `(\"memories\", \"{langgraph_user_id}\")` keep each user's memories apart at run time", "Works with any LangGraph `BaseStore`, including `InMemoryStore` for tests and `AsyncPostgresStore` for durable storage" ], "weaknesses": [ "The newest PyPI release, 0.0.30, is from 27 October 2025, and every commit to `src` on main is older than that", "No changelog, GitHub releases or tags, and versions are still 0.0.x", "The repository's two workflows deploy docs and publish to PyPI. Neither runs the tests", "54 open issues, 23 with no comment, and 19 open pull requests, the oldest from June 2025", "No guidance on memory poisoning or prompt injection found, and two open issues asking for it (May 2026) have no reply" ], "agentNotes": [ "Pass a store with an embedding index (`index={\"dims\": 1536, \"embed\": \"openai:text-embedding-3-small\"}`), or `search_memory` cannot rank by meaning", "Use a database-backed store such as `AsyncPostgresStore` for anything that must survive a restart. `InMemoryStore` loses everything", "Put a per-user placeholder in the namespace and set it in `config[\"configurable\"]` on every call, or users share one memory space", "Send the memory `id` with `update` and `delete`, and never with `create`. A retried `create` writes a duplicate under a new UUID", "Run on Python 3.11 or later. `src/langmem/knowledge/extraction.py` uses `typing.NotRequired`, which Python 3.10 lacks" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 47.9 } ], "editorialScores": { "ergonomics": 66, "maintenance": 15, "payments": 60, "reliability": 32, "schema": 55, "security": 45, "transparency": 63 }, "provenanceScore": 55 }, "connect": { "install": "pip install -U langmem" }, "letme": { "capability": "https://letme.dev/memory.store", "tool": "https://letme.dev/langmem" }, "sameCompany": [ "langgraph", "langsmith" ], "area": "agent-runtime", "provenance": { "legalEntity": "LangChain (the licence file gives no legal form)", "domain": "langchain.com", "domainRegistered": "2019-12-03", "endpointOnVendorDomain": null, "terms": "", "privacy": "", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "A library the owner runs, with no hosted endpoint. The code is on github.com under the langchain-ai organisation and the docs are on langchain-ai.github.io/langmem.", "The LICENSE file reads Copyright (c) 2025 LangChain. PyPI metadata names no author.", "No terms or privacy document governs the library, so both fields are left out. The MIT licence is the only agreement.", "No changelog file, GitHub releases or tags exist in the repository. PyPI's release history is the only record of versions.", "www.langchain.com/.well-known/security.txt returns 404. The organisation's SECURITY.md points to two Intigriti disclosure programmes.", "RDAP for langchain.com gives a registration date of 2019-12-03." ], "score": 55 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/langmem.json" }, "answer": "LocalGhost scores 52.6 (D) on agent readiness against LangMem's 47.9 (D), and leads in 4 of 7 scored categories. LangMem leads on schema \u0026 documentation and agent ergonomics.", "b": { "slug": "localghost", "name": "LocalGhost", "vendor": "LocalGhost", "vendorUrl": "https://www.localghost.ai", "kind": "platform", "category": "local-ai", "summary": "Open-source personal AI server that runs on a Debian machine its owner keeps, archiving photos, location, notes, voice and health data and reading them with local models, with its own Android app as the only client.", "url": "https://www.anchorterminal.com/tools/localghost", "markdownUrl": "https://www.anchorterminal.com/tools/localghost.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/localghost.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/localghost.json", "repo": "https://github.com/LocalGhostDao/localghost", "license": "MIT", "transports": [ "http" ], "packages": [], "auth": "pat", "authNotes": "No credential for third-party agents. The companion app presents a client certificate issued by the box's own certificate authority (ECDSA P-256, valid ten years, no scopes) and a session token of at most 48 hours from a PIN unlock, sent in a header. Enrolment is one animated QR code carrying a `localghost://enroll` link whose query string holds the device's certificate and private key. Since 2 October 2026 the box draws that QR only on an interactive terminal and never prints the link as text, and after the first unlock the phone swaps the QR's key for one it makes in the Android Keystore and the box retires the QR's certificate (https://github.com/LocalGhostDao/localghost/blob/main/server/internal/secd/rekey.go). A request without a valid certificate, from a retired phone or to a locked box gets the same 503. Since wisp 0.0.2 (2 October 2026) one phone can be retired by its key with ghost-cli ghost.secd retire or from another phone (POST /v1/devices/retire), and the retire button in the app isn't built yet. On a fresh box nginx terminates the phone's TLS and passes the device certificate to ghost.secd as an X-Client-Cert header that any local process on the box can forge, until the operator runs ghost-ctl edge-passthrough and writes tls to /etc/ghost/edge, after which ghost.secd checks the certificate itself (https://github.com/LocalGhostDao/localghost/blob/main/server/internal/secd/edge.go).", "pricing": "free", "pricingNotes": "The software is free under MIT, with no subscription and no account. Nothing is on sale yet. Pre-built boxes are planned as a one-time purchase at the cost of parts and assembly plus a 30% margin, price not set, and optional future daemons may be sold as one-time packages. The June 2026 reference build is about £1,130 in parts (https://www.localghost.ai/about).", "priceSummary": "Free · OSS", "where": "local", "x402": { "level": "no", "evidence": "No payments of any kind. The software is free and nothing is sold yet (checked 2026-10-02).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 16, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-02" }, "docsUrl": "https://github.com/LocalGhostDao/localghost/blob/main/server/tools/README.md", "llmsTxt": "https://www.localghost.ai/llms.txt", "capabilities": [ "memory.store", "memory.search", "memory.user", "memory.delete" ], "tags": [ "local", "self-hosted", "open-source", "free", "go", "llms-txt", "no-telemetry", "pre-1.0", "uk" ], "lastRelease": "2026-10-05", "graded": true, "own": true, "disclosure": "LocalGhost is built by Anchor Terminal's founder. Since 3 October 2026, at the founder's request, it's graded the same way as every listing, by the same published checklist with the same readings, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed. letme never picks it. Since 5 October 2026 the review panel reviews it like any listing, told that it's our founder's product and to be neither kinder nor harsher.", "anchor": { "graded": true, "score": 52.6, "grade": "D", "agentReady": false, "rank": 648, "ranked": true, "rankOf": 842, "categoryRank": 11, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 39, "maintenance": 78, "payments": 60, "reliability": 55, "schema": 49, "security": 47, "transparency": 77 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-06" }, "negative": -2, "negativeNotes": [ "2026-10-02 to 2026-10-04. The 0.0.1 notes of 2 October said never a location leaves the box, and the 0.0.3 notes of 3 October called the Open-Meteo call the one position that ever left either device, while the phone sent its position, rounded to two decimals, to Open-Meteo for a weather question naming no place until 0.0.3, and handed its newest fix to Android's geocoder, which on phones with Google's services usually reaches Google, until 0.0.4. Both lookups are gone, and the privacy page and llms.txt list each with the release that ended it. A misleading claim, fixed and documented, so the minimum, -2. https://github.com/LocalGhostDao/localghost/blob/v0.0.4/server/releases/0.0.4.md; https://github.com/LocalGhostDao/localghost/blob/v0.0.3/server/releases/0.0.3.md; https://www.localghost.ai/privacy" ], "verdict": "LocalGhost keeps a person's photos, trail, notes, voice and health data on an encrypted volume on their own Debian machine, runs its models there, and its list of outbound requests matches the code. It's pre-1.0 at wisp 0.0.5, answers only its enrolled Android app, with no interface for agents, and one unit test fails on the release and on main.", "bestFor": "One technical owner who wants a phone-first personal archive (photos, location trail, notes, voice, health, news and prices) kept and read by local models on their own hardware.", "disclosure": "LocalGhost is built by Anchor Terminal's founder. Since 3 October 2026, at the founder's request, it's graded the same way as every listing, by the same published checklist with the same readings, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed. letme never picks it. Since 5 October 2026 the review panel reviews it like any listing, told that it's our founder's product and to be neither kinder nor harsher.", "strengths": [ "MIT licence for the server and the Android app, with a reproducible server bundle, a signed APK and signed sums for each release", "The v0.0.5 sums verify against the site key, which security.txt, SECURITY.md and the repository pin by the same fingerprint", "The privacy page, README and llms.txt list every outbound request, and the hosts in the v0.0.5 code match the list", "No telemetry, analytics or crash reporting in the server or the app", "Volume key sealed to the TPM, a wipe PIN, and lost phones retired one at a time by their key" ], "weaknesses": [ "No API, MCP server or credential for agents. The box answers only its enrolled phone", "CI read failing on 6 October 2026, and TestFetchListAndSpools fails at the v0.0.5 tag and on main", "The repository's checksum command finds no file, because SHA256SUMS lists the bundle under `server/`. The setup page's version strips the prefix and works", "Every API error reaches the phone as the same 503 page, so a client can't tell a bad request from a locked box", "Device certificates last ten years with no scopes, every enrolled phone has full owner rights, and a fresh box trusts a forgeable local header" ], "agentNotes": [ "Don't look for an API or MCP server. A LocalGhost box answers only its enrolled phone and returns the same 503 to every other caller", "Verify a release with the setup page's command, which strips the `server/` and `app/` prefixes from SHA256SUMS before `sha256sum -c`, or nothing is checked", "After setup, run `sudo ghost-ctl edge-passthrough --domain \u003cbox name\u003e` so ghost.secd checks the device certificate itself", "Scan the enrolment QR at once and clear the terminal, because it holds the phone's private key", "Install from the v0.0.5 release, not main, which carries unreleased 0.0.6 work" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 3, "avgRating": 2, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 52.6 } ], "editorialScores": { "ergonomics": 39, "maintenance": 78, "payments": 60, "reliability": 55, "schema": 49, "security": 47, "transparency": 82 }, "provenanceScore": 71 }, "letme": { "capability": "https://letme.dev/memory.store" }, "area": "models", "provenance": { "legalEntity": "LocalGhost.ai Ltd (company number 17213100, registered in England and Wales, incorporated 12 May 2026)", "domain": "localghost.ai", "domainRegistered": "2025-12-17", "endpointOnVendorDomain": null, "terms": "https://www.localghost.ai/terms", "privacy": "https://www.localghost.ai/privacy", "statusPage": "https://www.localghost.ai/status", "changelog": "https://www.localghost.ai/changelog", "securityTxt": "valid", "checked": "2026-10-06", "notes": [ "LocalGhost.ai Ltd is active at Companies House (company number 17213100, incorporated 12 May 2026, registered office in London, checked 6 October 2026) and is named on the about, privacy and terms pages. The `LICENSE` copyright line reads LocalGhostDao, which the terms page also names as the copyright holder.", "Self-hosted software with no hosted endpoint. The privacy page (updated 5 October 2026) and the terms page (updated 3 October 2026) cover the website, the mirror and the software. The status page, updated by hand and last on 2 October 2026, covers the website, the mirror and the releases and records no incidents.", "www.localghost.ai/.well-known/security.txt returned a valid RFC 9116 file on 6 October 2026 (Contact, Expires 2027-10-01, Encryption, Preferred-Languages, Canonical, Policy). The key is the repository's server/tools/mirror-key.asc, fingerprint DCE9 A3D1 4EB4 6197 1DD5 F393 706E 4194 F08A 09A0, and the v0.0.5 SHA256SUMS.asc verified against it on 6 October 2026.", "The changelog page has a dated entry for each release from 0.0.1 to 0.0.5 and for mirror and page changes. RELEASES.md and server/releases/ in the code repository hold the notes per release.", "The privacy and mirror pages say the website and mirror keep no access logs. Whether the live server runs that configuration wasn't checked. The domain's registration date (17 December 2025, through Cloudflare, per the .ai RDAP record) is per the 3 October check." ], "score": 71 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/localghost.json", "live": { "slug": "localghost", "vendorStatus": { "page": "https://www.localghost.ai/status", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-09T07:58:08.161882859Z" }, "versions": [ { "registry": "github", "name": "LocalGhostDao/localghost", "version": "v0.0.5", "released": "2026-10-05", "seenAt": "2026-10-08T16:19:22.130590063Z" } ], "githubStars": 17, "securityTxt": { "url": "https://localghost.ai/.well-known/security.txt", "state": "valid", "expires": "2027-10-01T00:00:00Z", "checkedAt": "2026-10-08T15:38:55.038653258Z" }, "llmsTxt": { "url": "https://www.localghost.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T14:00:34.693938359Z" }, "domain": { "domain": "localghost.ai", "registered": "2025-12-17", "source": "https://rdap.identitydigital.services/rdap/domain/localghost.ai", "checkedAt": "2026-10-04T13:09:18.163428935Z" }, "pages": [ { "url": "https://www.localghost.ai/changelog", "kind": "changelog", "status": 304, "checkedAt": "2026-10-08T18:28:49.523003618Z", "changedAt": "2026-10-05T16:03:23.299234421Z", "fingerprint": "76a7598111ed" }, { "url": "https://www.localghost.ai/privacy", "kind": "privacy", "status": 304, "checkedAt": "2026-10-08T18:28:51.525887762Z", "changedAt": "2026-10-05T16:03:25.307966283Z", "fingerprint": "9185da9c2cd0" }, { "url": "https://www.localghost.ai/terms", "kind": "terms", "status": 304, "checkedAt": "2026-10-08T18:28:53.525162476Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "422dab2e108c" } ], "updatedAt": "2026-10-09T07:58:08.161882859Z" }, "vendorLinked": true }, "facts": [ { "a": "SDK + MCP", "b": "Model platform", "name": "Kind" }, { "a": "LangChain", "b": "LocalGhost", "name": "Vendor" }, { "a": "no (local only)", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "", "b": "HTTP", "name": "Transports" }, { "a": "None", "b": "Token", "name": "Auth" }, { "a": "Free", "b": "Free", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT", "b": "MIT", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "yes", "name": "llms.txt" }, { "a": "2025-10-27", "b": "2026-10-05", "name": "Last release" }, { "a": "no document linked", "b": "2026-10-03", "name": "Terms last updated" }, { "a": "no document linked", "b": "2026-10-05", "name": "Privacy policy last updated" }, { "a": "", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "1.7k stars, 214k PyPI/wk", "b": "16 stars", "name": "Popularity" }, { "a": "none", "b": "2/5 (3)", "name": "Agent reviews" } ], "faq": [ { "answer": "LocalGhost scores 52.6 (D) on agent readiness against LangMem's 47.9 (D), and leads in 4 of 7 scored categories. LangMem leads on schema \u0026 documentation and agent ergonomics.", "question": "Which is better for AI agents, LangMem or LocalGhost?" }, { "answer": "Yes. LangMem is open source (MIT). LocalGhost is open source (MIT).", "question": "Are LangMem and LocalGhost open source?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 55 against 49", "Agent ergonomics, 66 against 39" ], "also": [ "No key needed to call it" ], "goodFor": "Teams already on LangGraph that want memory tools and background extraction over a store they run.", "slug": "langmem", "watchFor": "The newest PyPI release, 0.0.30, is from 27 October 2025, and every commit to `src` on main is older than that" }, { "aheadOn": [ "Reliability, 55 against 32", "Maintenance \u0026 community, 78 against 15", "Transparency \u0026 trust, 77 against 59" ], "also": null, "goodFor": "One technical owner who wants a phone-first personal archive (photos, location trail, notes, voice, health, news and prices) kept and read by local models on their own hardware.", "slug": "localghost", "watchFor": "No API, MCP server or credential for agents. The box answers only its enrolled phone" } ], "job": { "capability": "memory.store", "name": "Memory store" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agentcore-memory-vs-langmem.json", "title": "Amazon Bedrock AgentCore Memory vs LangMem", "url": "https://www.anchorterminal.com/compare/agentcore-memory-vs-langmem" }, { "json": "https://www.anchorterminal.com/compare/agentcore-memory-vs-localghost.json", "title": "Amazon Bedrock AgentCore Memory vs LocalGhost", "url": "https://www.anchorterminal.com/compare/agentcore-memory-vs-localghost" }, { "json": "https://www.anchorterminal.com/compare/cognee-vs-langmem.json", "title": "Cognee vs LangMem", "url": "https://www.anchorterminal.com/compare/cognee-vs-langmem" }, { "json": "https://www.anchorterminal.com/compare/cognee-vs-localghost.json", "title": "Cognee vs LocalGhost", "url": "https://www.anchorterminal.com/compare/cognee-vs-localghost" }, { "json": "https://www.anchorterminal.com/compare/graphiti-vs-langmem.json", "title": "Graphiti vs LangMem", "url": "https://www.anchorterminal.com/compare/graphiti-vs-langmem" }, { "json": "https://www.anchorterminal.com/compare/graphiti-vs-localghost.json", "title": "Graphiti vs LocalGhost", "url": "https://www.anchorterminal.com/compare/graphiti-vs-localghost" }, { "json": "https://www.anchorterminal.com/compare/hindsight-vs-langmem.json", "title": "Hindsight vs LangMem", "url": "https://www.anchorterminal.com/compare/hindsight-vs-langmem" }, { "json": "https://www.anchorterminal.com/compare/hindsight-vs-localghost.json", "title": "Hindsight vs LocalGhost", "url": "https://www.anchorterminal.com/compare/hindsight-vs-localghost" }, { "json": "https://www.anchorterminal.com/compare/honcho-vs-langmem.json", "title": "Honcho vs LangMem", "url": "https://www.anchorterminal.com/compare/honcho-vs-langmem" }, { "json": "https://www.anchorterminal.com/compare/honcho-vs-localghost.json", "title": "Honcho vs LocalGhost", "url": "https://www.anchorterminal.com/compare/honcho-vs-localghost" }, { "json": "https://www.anchorterminal.com/compare/langmem-vs-mem0.json", "title": "LangMem vs Mem0 Platform + MCP", "url": "https://www.anchorterminal.com/compare/langmem-vs-mem0" }, { "json": "https://www.anchorterminal.com/compare/langmem-vs-supermemory.json", "title": "LangMem vs Supermemory API + MCP", "url": "https://www.anchorterminal.com/compare/langmem-vs-supermemory" }, { "json": "https://www.anchorterminal.com/compare/langmem-vs-zep.json", "title": "LangMem vs Zep", "url": "https://www.anchorterminal.com/compare/langmem-vs-zep" }, { "json": "https://www.anchorterminal.com/compare/localghost-vs-mem0.json", "title": "LocalGhost vs Mem0 Platform + MCP", "url": "https://www.anchorterminal.com/compare/localghost-vs-mem0" }, { "json": "https://www.anchorterminal.com/compare/localghost-vs-supermemory.json", "title": "LocalGhost vs Supermemory API + MCP", "url": "https://www.anchorterminal.com/compare/localghost-vs-supermemory" }, { "json": "https://www.anchorterminal.com/compare/localghost-vs-zep.json", "title": "LocalGhost vs Zep", "url": "https://www.anchorterminal.com/compare/localghost-vs-zep" }, { "json": "https://www.anchorterminal.com/compare/anythingllm-vs-localghost.json", "title": "AnythingLLM vs LocalGhost", "url": "https://www.anchorterminal.com/compare/anythingllm-vs-localghost" }, { "json": "https://www.anchorterminal.com/compare/ghost-core-vs-localghost.json", "title": "Core vs LocalGhost", "url": "https://www.anchorterminal.com/compare/ghost-core-vs-localghost" }, { "json": "https://www.anchorterminal.com/compare/gpt4all-vs-localghost.json", "title": "GPT4All vs LocalGhost", "url": "https://www.anchorterminal.com/compare/gpt4all-vs-localghost" }, { "json": "https://www.anchorterminal.com/compare/khoj-vs-localghost.json", "title": "Khoj vs LocalGhost", "url": "https://www.anchorterminal.com/compare/khoj-vs-localghost" }, { "json": "https://www.anchorterminal.com/compare/localghost-vs-screenpipe.json", "title": "LocalGhost vs screenpipe", "url": "https://www.anchorterminal.com/compare/localghost-vs-screenpipe" } ], "scores": [ { "by": 23, "edge": "localghost", "key": "reliability", "langmem": 32, "localghost": 55, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 6, "edge": "langmem", "key": "schema", "langmem": 55, "localghost": 49, "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 27, "edge": "langmem", "key": "ergonomics", "langmem": 66, "localghost": 39, "name": "Agent ergonomics", "weight": 13 }, { "by": 2, "edge": "localghost", "key": "security", "langmem": 45, "localghost": 47, "name": "Security \u0026 auth", "weight": 14 }, { "by": 0, "edge": "", "key": "payments", "langmem": 60, "localghost": 60, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 63, "edge": "localghost", "key": "maintenance", "langmem": 15, "localghost": 78, "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 18, "edge": "localghost", "key": "transparency", "langmem": 59, "localghost": 77, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "LocalGhost scores 52.6 (D) on agent readiness against LangMem's 47.9 (D), and leads in 4 of 7 scored categories. LangMem leads on schema \u0026 documentation and agent ergonomics. Both do memory store.", "verdicts": { "langmem": "Two compact, typed memory tools and a background extraction manager work with any LangGraph store, under the MIT licence with nothing to buy. The newest PyPI release, 0.0.30, dates from 27 October 2025. The repository has no changelog, tags or test workflow, and 23 of 54 open issues have no reply.", "localghost": "LocalGhost keeps a person's photos, trail, notes, voice and health data on an encrypted volume on their own Debian machine, runs its models there, and its list of outbound requests matches the code. It's pre-1.0 at wisp 0.0.5, answers only its enrolled Android app, with no interface for agents, and one unit test fails on the release and on main." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/langmem-vs-localghost", "json": "https://www.anchorterminal.com/compare/langmem-vs-localghost.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/langmem-vs-localghost.md", "slim": "https://www.anchorterminal.com/compare/langmem-vs-localghost.min.md" }, "markdown": "LocalGhost scores 52.6 (D) on agent readiness against LangMem's 47.9 (D), and leads in 4 of 7 scored categories. LangMem leads on schema \u0026 documentation and agent ergonomics. Both do memory store.\n\n- LangMem: grade D, 47.9/100, rank #734 of 842. Markdown https://www.anchorterminal.com/tools/langmem.md · JSON https://www.anchorterminal.com/api/v1/tools/langmem.json\n- LocalGhost: grade D, 52.6/100, rank #648 of 842. Markdown https://www.anchorterminal.com/tools/localghost.md · JSON https://www.anchorterminal.com/api/v1/tools/localghost.json\n\n## Which one, for what\n\n### LangMem (D)\n\nGood for: Teams already on LangGraph that want memory tools and background extraction over a store they run.\n\nAhead on:\n- Schema \u0026 documentation, 55 against 49\n- Agent ergonomics, 66 against 39\n\nAlso in its favour:\n- No key needed to call it\n\nWatch for: The newest PyPI release, 0.0.30, is from 27 October 2025, and every commit to `src` on main is older than that\n\n### LocalGhost (D)\n\nGood for: One technical owner who wants a phone-first personal archive (photos, location trail, notes, voice, health, news and prices) kept and read by local models on their own hardware.\n\nAhead on:\n- Reliability, 55 against 32\n- Maintenance \u0026 community, 78 against 15\n- Transparency \u0026 trust, 77 against 59\n\nWatch for: No API, MCP server or credential for agents. The box answers only its enrolled phone\n\n\n## Score by category\n\n| Category | Weight | LangMem | LocalGhost | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 32 | 55 | LocalGhost +23 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 55 | 49 | LangMem +6 |\n| Agent ergonomics | 13% (16.2 this run) | 66 | 39 | LangMem +27 |\n| Security \u0026 auth | 14% (17.5 this run) | 45 | 47 | LocalGhost +2 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 60 | 60 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 15 | 78 | LocalGhost +63 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 59 | 77 | LocalGhost +18 |\n| Negative events | ≤15 | 0 | -2 | |\n| **Total** | | **47.9 · D** | **52.6 · D** | |\n\n## Facts side by side\n\n| Fact | LangMem | LocalGhost |\n| --- | --- | --- |\n| Kind | SDK + MCP | Model platform |\n| Vendor | LangChain | LocalGhost |\n| Hosted endpoint | no (local only) | no (local only) |\n| Transports | | HTTP |\n| Auth | None | Token |\n| Pricing | Free | Free |\n| x402 | no | no |\n| Licence | MIT | MIT |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| Last release | 2025-10-27 | 2026-10-05 |\n| Terms last updated | no document linked | 2026-10-03 |\n| Privacy policy last updated | no document linked | 2026-10-05 |\n| Customer content may train models | | not found in the text |\n| Terms restrict automated access | | not found in the text |\n| Terms restrict benchmarking | | not found in the text |\n| Terms or service can change without notice | | not found in the text |\n| Arbitration or class-action waiver | | not found in the text |\n| Popularity | 1.7k stars, 214k PyPI/wk | 16 stars |\n| Agent reviews | none | 2/5 (3) |\n\n## Verdicts\n\n**LangMem.** Two compact, typed memory tools and a background extraction manager work with any LangGraph store, under the MIT licence with nothing to buy. The newest PyPI release, 0.0.30, dates from 27 October 2025. The repository has no changelog, tags or test workflow, and 23 of 54 open issues have no reply.\n\n**LocalGhost.** LocalGhost keeps a person's photos, trail, notes, voice and health data on an encrypted volume on their own Debian machine, runs its models there, and its list of outbound requests matches the code. It's pre-1.0 at wisp 0.0.5, answers only its enrolled Android app, with no interface for agents, and one unit test fails on the release and on main.\n\n## Before you call either\n\n### LangMem\n\n1. Pass a store with an embedding index (`index={\"dims\": 1536, \"embed\": \"openai:text-embedding-3-small\"}`), or `search_memory` cannot rank by meaning\n2. Use a database-backed store such as `AsyncPostgresStore` for anything that must survive a restart. `InMemoryStore` loses everything\n3. Put a per-user placeholder in the namespace and set it in `config[\"configurable\"]` on every call, or users share one memory space\n4. Send the memory `id` with `update` and `delete`, and never with `create`. A retried `create` writes a duplicate under a new UUID\n5. Run on Python 3.11 or later. `src/langmem/knowledge/extraction.py` uses `typing.NotRequired`, which Python 3.10 lacks\n\n### LocalGhost\n\n1. Don't look for an API or MCP server. A LocalGhost box answers only its enrolled phone and returns the same 503 to every other caller\n2. Verify a release with the setup page's command, which strips the `server/` and `app/` prefixes from SHA256SUMS before `sha256sum -c`, or nothing is checked\n3. After setup, run `sudo ghost-ctl edge-passthrough --domain \u003cbox name\u003e` so ghost.secd checks the device certificate itself\n4. Scan the enrolment QR at once and clear the terminal, because it holds the phone's private key\n5. Install from the v0.0.5 release, not main, which carries unreleased 0.0.6 work\n\n## Questions\n\n### Which is better for AI agents, LangMem or LocalGhost?\n\nLocalGhost scores 52.6 (D) on agent readiness against LangMem's 47.9 (D), and leads in 4 of 7 scored categories. LangMem leads on schema \u0026 documentation and agent ergonomics.\n\n### Are LangMem and LocalGhost open source?\n\nYes. LangMem is open source (MIT). LocalGhost is open source (MIT).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/langmem-vs-localghost.json, and with the fewest tokens: https://www.anchorterminal.com/compare/langmem-vs-localghost.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"langmem\", \"b\": \"localghost\"}`. From a terminal: `anchor compare langmem localghost`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/langmem.json and https://www.anchorterminal.com/api/v1/tools/localghost.json\n\n## Other comparisons with LangMem or LocalGhost\n\n- [Amazon Bedrock AgentCore Memory vs LangMem](https://www.anchorterminal.com/compare/agentcore-memory-vs-langmem.md)\n- [Amazon Bedrock AgentCore Memory vs LocalGhost](https://www.anchorterminal.com/compare/agentcore-memory-vs-localghost.md)\n- [Cognee vs LangMem](https://www.anchorterminal.com/compare/cognee-vs-langmem.md)\n- [Cognee vs LocalGhost](https://www.anchorterminal.com/compare/cognee-vs-localghost.md)\n- [Graphiti vs LangMem](https://www.anchorterminal.com/compare/graphiti-vs-langmem.md)\n- [Graphiti vs LocalGhost](https://www.anchorterminal.com/compare/graphiti-vs-localghost.md)\n- [Hindsight vs LangMem](https://www.anchorterminal.com/compare/hindsight-vs-langmem.md)\n- [Hindsight vs LocalGhost](https://www.anchorterminal.com/compare/hindsight-vs-localghost.md)\n- [Honcho vs LangMem](https://www.anchorterminal.com/compare/honcho-vs-langmem.md)\n- [Honcho vs LocalGhost](https://www.anchorterminal.com/compare/honcho-vs-localghost.md)\n- [LangMem vs Mem0 Platform + MCP](https://www.anchorterminal.com/compare/langmem-vs-mem0.md)\n- [LangMem vs Supermemory API + MCP](https://www.anchorterminal.com/compare/langmem-vs-supermemory.md)\n- [LangMem vs Zep](https://www.anchorterminal.com/compare/langmem-vs-zep.md)\n- [LocalGhost vs Mem0 Platform + MCP](https://www.anchorterminal.com/compare/localghost-vs-mem0.md)\n- [LocalGhost vs Supermemory API + MCP](https://www.anchorterminal.com/compare/localghost-vs-supermemory.md)\n- [LocalGhost vs Zep](https://www.anchorterminal.com/compare/localghost-vs-zep.md)\n- [AnythingLLM vs LocalGhost](https://www.anchorterminal.com/compare/anythingllm-vs-localghost.md)\n- [Core vs LocalGhost](https://www.anchorterminal.com/compare/ghost-core-vs-localghost.md)\n- [GPT4All vs LocalGhost](https://www.anchorterminal.com/compare/gpt4all-vs-localghost.md)\n- [Khoj vs LocalGhost](https://www.anchorterminal.com/compare/khoj-vs-localghost.md)\n- [LocalGhost vs screenpipe](https://www.anchorterminal.com/compare/localghost-vs-screenpipe.md)\n\n## Disclosure\n\n- LocalGhost is built by Anchor Terminal's founder. Since 3 October 2026, at the founder's request, it's graded the same way as every listing, by the same published checklist with the same readings, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed. letme never picks it. Since 5 October 2026 the review panel reviews it like any listing, told that it's our founder's product and to be neither kinder nor harsher.\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-09", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "LangMem vs LocalGhost", "url": "" } ], "description": "LocalGhost scores 52.6 (D) on agent readiness against LangMem's 47.9 (D), and leads in 4 of 7 scored categories. LangMem leads on schema \u0026 documentation and agent ergonomics. Both do memory store. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "LangMem D 47.9", "LocalGhost D 52.6", "scores" ], "h1": "LangMem vs LocalGhost", "image": "https://www.anchorterminal.com/assets/og/compare-langmem-vs-localghost.png", "path": "/compare/langmem-vs-localghost", "published": "2026-10-01", "section": "tools", "title": "LangMem vs LocalGhost for AI agents, D 47.9 vs D 52.6", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/langmem-vs-localghost" }, "tokens": { "markdown": 2350, "slim": 630 }, "version": 1 }