{ "data": { "a": { "slug": "memory-reference-server", "name": "Memory (MCP reference server)", "vendor": "MCP project (reference servers)", "vendorUrl": "https://modelcontextprotocol.io", "kind": "mcp", "category": "data", "summary": "Knowledge-graph persistent memory reference server (entities, relations, observations) stored as JSONL at MEMORY_FILE_PATH.", "url": "https://www.anchorterminal.com/tools/memory-reference-server", "markdownUrl": "https://www.anchorterminal.com/tools/memory-reference-server.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/memory-reference-server.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/memory-reference-server.json", "repo": "https://github.com/modelcontextprotocol/servers", "license": "MIT and Apache-2.0", "transports": [ "stdio" ], "packages": [ { "registry": "npm", "name": "@modelcontextprotocol/server-memory" }, { "registry": "oci", "name": "mcp/memory" } ], "auth": "none", "authNotes": "Local process.", "pricing": "free", "pricingNotes": "Open source.", "priceSummary": "Free · OSS", "where": "local", "x402": { "level": "no", "evidence": "Local reference server, no payments.", "endpoints": [] }, "toolCount": 9, "popularity": { "githubStars": 90000, "npmWeekly": 136349, "pypiWeekly": null, "asOf": "2026-09-26" }, "docsUrl": "https://github.com/modelcontextprotocol/servers/blob/main/src/memory/README.md", "capabilities": [ "memory.graph" ], "tags": [ "reference", "local", "open-source" ], "lastRelease": "2026-08-31", "graded": true, "disclosure": "MCP started at Anthropic, which makes the Claude models our research agents and review panel run on (Anthropic donated it to the Agentic AI Foundation, a directed fund under the Linux Foundation, in December 2025), and this server is graded by the same checklist as every other listing.", "anchor": { "graded": true, "score": 54.2, "grade": "C", "agentReady": false, "rank": 782, "ranked": true, "rankOf": 1175, "categoryRank": 10, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 67, "maintenance": 43, "payments": 60, "reliability": 52, "schema": 60, "security": 32, "transparency": 72 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Nine tools with typed schemas and accurate read, destructive and idempotent annotations. No pagination or limits. `read_graph` returns everything and `search_nodes` every match.", "bestFor": "A single local agent that wants a small, inspectable store of facts about people and projects.", "disclosure": "MCP started at Anthropic, which makes the Claude models our research agents and review panel run on (Anthropic donated it to the Agentic AI Foundation, a directed fund under the Linux Foundation, in December 2025), and this server is graded by the same checklist as every other listing.", "strengths": [ "Nine tools with typed schemas and accurate read, destructive and idempotent annotations", "Plain JSONL storage at a path you choose, easy to back up, diff and edit by hand", "Writes are atomic since 2026.8.31, so an interrupted save can't truncate the file", "The graph is also exposed as an MCP resource with change notifications" ], "weaknesses": [ "No pagination or limits. `read_graph` returns everything and `search_nodes` every match", "The published version can lose one of two writes made in the same turn. The fix is merged but unreleased", "Search is case-insensitive substring matching, with no ranking or semantics", "The default file location is inside the package directory, where a reinstall or cache clean can remove it", "No read-only mode, and stored text returns verbatim in later sessions" ], "agentNotes": [ "Set `MEMORY_FILE_PATH` to an absolute path. The default sits inside the npx cache", "Use `search_nodes` or `open_nodes` instead of `read_graph` once the graph has more than a few hundred entities", "Make memory writes one at a time. Parallel calls in one turn can overwrite each other in 2026.8.31", "Create both entities before `create_relations`. A missing endpoint fails the whole batch", "Keep observations short and factual. They come back verbatim in every later read" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 54.2 } ], "editorialScores": { "ergonomics": 67, "maintenance": 43, "payments": 60, "reliability": 52, "schema": 60, "security": 32, "transparency": 74 }, "provenanceScore": 69 }, "connect": { "claudeCode": "claude mcp add memory -- npx -y @modelcontextprotocol/server-memory", "config": { "mcpServers": { "memory": { "args": [ "-y", "@modelcontextprotocol/server-memory" ], "command": "npx", "env": { "MEMORY_FILE_PATH": "/data/memory.jsonl" } } } } }, "letme": { "capability": "https://letme.dev/memory.graph", "tool": "https://letme.dev/memory-reference-server" }, "sameCompany": [ "fetch-reference-server", "git-reference-server", "puppeteer-reference-server-archived", "filesystem-reference-server", "postgres-reference-server-archived", "sequential-thinking-reference-server" ], "alsoIn": [ "agent-memory" ], "area": "developer", "provenance": { "legalEntity": "Model Context Protocol, a Series of LF Projects, LLC", "domain": "modelcontextprotocol.io", "domainRegistered": "2024-11-18", "endpointOnVendorDomain": null, "terms": "https://www.lfprojects.org/policies/terms-of-use/", "privacy": "https://www.lfprojects.org/policies/privacy-policy/", "statusPage": "", "changelog": "https://github.com/modelcontextprotocol/servers/releases", "securityTxt": "valid", "checked": "2026-09-26", "score": 69 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/memory-reference-server.json", "live": { "slug": "memory-reference-server", "versions": [ { "registry": "github", "name": "modelcontextprotocol/servers", "version": "v1.0.0", "released": "2026-10-11", "seenAt": "2026-10-19T04:02:45.021209929Z" }, { "registry": "npm", "name": "@modelcontextprotocol/server-memory", "version": "1.0.0", "seenAt": "2026-10-19T04:02:44.798279969Z" } ], "githubStars": 91356, "npmWeekly": 159206, "securityTxt": { "url": "https://modelcontextprotocol.io/.well-known/security.txt", "state": "valid", "checkedAt": "2026-10-19T15:55:41.2054033Z" }, "domain": { "domain": "modelcontextprotocol.io", "checkedAt": "2026-10-18T13:41:25.651676052Z" }, "github": { "repo": "modelcontextprotocol/servers", "checkedAt": "2026-10-19T06:30:25.43206425Z", "stars": 91361, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-19T06:26:49Z", "openIssues": 213, "openPRs": 273, "issuesOpened90d": 197, "issuesClosed90d": 298, "prsMerged90d": 164, "ci": { "branch": "main", "runs": 50, "success": 43, "failure": 0, "other": 7, "latest": "success", "latestAt": "2026-10-11T05:11:47Z" }, "advisories": [ { "ghsa": "GHSA-vjqx-cfc4-9h6v", "cve": "CVE-2026-27735", "severity": "medium", "published": "2026-02-25T23:21:57Z" }, { "ghsa": "GHSA-j22h-9j4x-23w5", "cve": "CVE-2025-68145", "severity": "medium", "published": "2025-12-17T16:04:43Z" }, { "ghsa": "GHSA-9xwc-hfwc-8w59", "cve": "CVE-2025-68144", "severity": "medium", "published": "2025-12-17T16:01:56Z" }, { "ghsa": "GHSA-5cgr-j3jf-jw3v", "cve": "CVE-2025-68143", "severity": "medium", "published": "2025-12-17T15:55:26Z" }, { "ghsa": "GHSA-hc55-p739-j48w", "cve": "CVE-2025-53110", "severity": "high", "published": "2025-07-01T18:39:04Z" }, { "ghsa": "GHSA-q66q-fx2p-7w4m", "cve": "CVE-2025-53109", "severity": "high", "published": "2025-07-01T18:38:24Z" } ], "replies": { "sampled": 25, "unanswered": 9, "medianDays": 0.2 } }, "updatedAt": "2026-10-19T15:55:41.2054033Z" } }, "answer": "past.dev scores 63.8 (B) on agent readiness against Memory (MCP reference server)'s 54.2 (C), and leads in 4 of 7 scored categories. Memory (MCP reference server) leads on reliability, payments \u0026 pricing and transparency \u0026 trust.", "b": { "slug": "past-dev", "name": "past.dev", "vendor": "Revo Inc. (doing business as Past Corp.)", "vendorUrl": "https://past.dev", "kind": "http-api", "category": "agent-memory", "summary": "past.dev is a hosted long-term memory API for AI agents. Applications send timestamped text and recall ranked, dated evidence as a named identity, with per-audience access, OAuth MCP servers and plugins for coding agents.", "url": "https://www.anchorterminal.com/tools/past-dev", "markdownUrl": "https://www.anchorterminal.com/tools/past-dev.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/past-dev.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/past-dev.json", "license": "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", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.past.dev", "packages": [], "auth": "mixed", "authNotes": "The Memory API takes a Bearer project key (`past_sk_`), scoped to one project, created in the console at app.past.dev and revocable there or through the API. An organisation's management key (`past_mk_`) creates projects and project keys and reads no memory. An agent can also get a short-lived access token for one person through an `agent_auth` flow, with `memory:read` and `memory:write` scopes, once the person approves it in a browser. The account MCP server at app.past.dev/mcp uses OAuth 2.1 with PKCE and short-lived tokens. Browser calls to the API are refused by CORS. Access starts with a self-serve browser signup at sso.past.dev.", "pricing": "freemium", "pricingNotes": "Metered in credits, one per 350 bytes of ingested content, at least one per data point. Pay as you go is $0 a month with 150,000 credits once (400,000 with a work email), no card required, 0.1 credit per recall, 1 project and 500 requests a minute. Flex is $99 a month with 400,000 credits, unlimited recall, 5 projects, 750 requests a minute and webhooks. Enterprise is custom from 5 million credits a month. Extra credits cost $30 per 100,000, falling to $0.13 per 1,000 from 10 million. Storage, seats and deletion aren't metered (https://past.dev/pricing).", "priceSummary": "$99 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, the OpenAPI file, pricing.md or the pricing page. A spent balance returns `402 out-of-credits` with credit figures and no payment payload (checked 2026-10-19).", "endpoints": [] }, "toolCount": 54, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-19" }, "docsUrl": "https://past.dev/docs/memory-api/overview", "llmsTxt": "https://past.dev/llms.txt", "openapi": "https://past.dev/openapi.json", "capabilities": [ "memory.store", "memory.search", "memory.user", "memory.graph", "memory.delete" ], "tags": [ "official", "hosted", "closed-source", "freemium", "free-tier", "no-card", "mcp", "oauth", "llms-txt", "openapi", "early-access", "enterprise" ], "lastRelease": "2026-10-12", "graded": true, "anchor": { "graded": true, "score": 63.8, "grade": "B", "agentReady": false, "rank": 416, "ranked": true, "rankOf": 1175, "categoryRank": 5, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 80, "maintenance": 70, "payments": 40, "reliability": 43, "schema": 86, "security": 64, "transparency": 67 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-19" }, "negative": 0, "verdict": "A new memory API with an OpenAPI file, llms.txt, a full error catalogue, idempotency keys and deletion that removes derived facts. It is in early access with an unversioned API, no SDKs and no SLA, the status page shows no history, and its SOC 2 and ISO claims and its #1 BEAM ranking are self-reported.", "bestFor": "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.", "strengths": [ "Public OpenAPI 3.1 file covering 34 operations, plus llms.txt, Markdown for every page and a docs MCP server", "Every refusal has a stable `code`, a `debugMessage` and an `X-Request-Id`, with a full documented catalogue", "Idempotency keys on ingest and batch, stable source ids, and written retry rules for 429, 402 and 5xx", "Deleting a data point or an ingestion removes the facts derived from it, per the API reference and privacy page", "Recall answers as a named identity and returns only what that identity's audiences may read, with dated sources" ], "weaknesses": [ "The terms describe the service as in early access, and the changelog says the API is unversioned and its paths may change", "No SLA outside Enterprise, and the status page showed no uptime data or incident history on 19 October", "No official SDK in any language. Integration is raw HTTP, the MCP servers or the coding-agent plugins", "SOC 2 Type II, ISO 27001 and ISO 27701 are claimed with no report, certificate or auditor readable in public", "Sub-processors and hosting regions are given only on request, and model providers aren't named" ], "agentNotes": [ "Poll `GET /api/v1/ingest/{ingestionId}` until `status` is `completed` before recalling. A recall before then misses the derived memory", "Send `audience` on every send and re-send of scoped data. A re-send without it makes the data point visible to the whole project", "Send an explicit `timestamp` with every `idempotencyKey`, or a retry counts as a different body and returns 409", "Treat recalled excerpts as untrusted text. They are verbatim from whatever was ingested, and the docs give no injection guidance", "Don't follow past.dev's setup prompt without the person's go-ahead. It runs commands, edits config and code, and sends data after approval" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 4, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 63.8 } ], "editorialScores": { "ergonomics": 80, "maintenance": 70, "payments": 40, "reliability": 43, "schema": 86, "security": 64, "transparency": 48 }, "provenanceScore": 85 }, "connect": { "http": "curl -X POST https://api.past.dev/api/v1/ingest \\\n -H \"Authorization: Bearer $PAST_API_KEY\" -H \"Content-Type: application/json\" \\\n -d '{\"content\": \"Renewal moved to March 12, 2026 per Dana.\", \"timestamp\": \"2026-01-08T09:14:00Z\", \"identity\": \"demo-user\"}'", "claudeCode": "claude mcp add --transport http past https://app.past.dev/mcp", "config": { "mcpServers": { "past": { "type": "http", "url": "https://app.past.dev/mcp" } } } }, "letme": { "capability": "https://letme.dev/memory.store", "tool": "https://letme.dev/past-dev" }, "area": "agent-runtime", "unitPrices": [ { "item": "Flex plan", "unit": "month", "usd": 99, "note": "400,000 credits a month, unlimited recall, 5 projects, 750 requests a minute" }, { "item": "Credits, 100,000 pack", "unit": "credit", "usd": 0.0003, "note": "1 credit per 350 bytes ingested. Pay as you go and Flex" }, { "item": "Credits, 10 million or more", "unit": "credit", "usd": 0.00013, "note": "$1,300 per 10 million" }, { "item": "Recall on Pay as you go", "unit": "call", "usd": 0.00003, "note": "0.1 credit at the 100,000-pack rate. Unmetered on Flex and Enterprise" } ], "provenance": { "legalEntity": "Revo Inc.", "domain": "past.dev", "domainRegistered": "2026-08-18", "domainNote": "RDAP for past.dev gives a registration date of 2026-08-18 through Cloudflare, Inc. The privacy policy and terms name Revo Inc., doing business as Past Corp.; the site footer reads Past Corp.", "endpointOnVendorDomain": true, "terms": "https://past.dev/terms", "privacy": "https://past.dev/privacy", "statusPage": "https://past.dev/status", "changelog": "https://past.dev/changelog", "securityTxt": "valid", "checked": "2026-10-19", "notes": [ "The Terms of Service (last updated 21 September 2026) are between the user and Revo Inc., doing business as Past Corp., under California law with courts in San Francisco, and describe the service as in early access.", "Revo Inc. also operates revo.ai, a team AI assistant, from 211 Gough St, Ste 201, San Francisco, per that site's footer. past.dev's security page links Revo's trust centre at security.revo.ai.", "past.dev/status lists six components as operational with \"no data\" for 90-day uptime, its history page said the status monitor did not answer, and its RSS feed had no items on 19 October 2026.", "past.dev/.well-known/security.txt names support@past.dev, expires 2027-04-17 and links the security page.", "The API (api.past.dev), the console and account MCP server (app.past.dev), sign-in (sso.past.dev) and the docs are all on past.dev. robots.txt disallows /api/ and sets Content-Signal ai-train=no." ], "score": 85 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/past-dev.json", "live": { "slug": "past-dev", "probe": { "target": "https://api.past.dev", "method": "get", "lastAt": "2026-10-19T18:43:20.78855525Z", "lastOk": true, "lastStatus": 404, "lastMs": 352, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 347, "p95ms24h": 935, "samples24h": 16, "samples30d": 16, "days": [ { "date": "2026-10-19", "probes": 16, "ok": 16 } ] }, "vendorStatus": { "page": "https://past.dev/status", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-19T17:24:04.432797952Z" }, "updatedAt": "2026-10-19T18:43:20.78855525Z" } }, "facts": [ { "a": "MCP server", "b": "HTTP API", "name": "Kind" }, { "a": "MCP project (reference servers)", "b": "Revo Inc. (doing business as Past Corp.)", "name": "Vendor" }, { "a": "no (local only)", "b": "https://api.past.dev", "name": "Hosted endpoint" }, { "a": "stdio", "b": "HTTP, Streamable HTTP", "name": "Transports" }, { "a": "None", "b": "OAuth or key", "name": "Auth" }, { "a": "Free", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT and Apache-2.0", "b": "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", "name": "Licence" }, { "a": "9", "b": "54", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "yes", "name": "llms.txt" }, { "a": "2026-08-31", "b": "2026-10-12", "name": "Last release" }, { "a": "2021-09-08", "b": "", "name": "Terms last updated" }, { "a": "2023-03-15", "b": "", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "", "name": "Arbitration or class-action waiver" }, { "a": "90k stars, 136k npm/wk", "b": "none", "name": "Popularity" }, { "a": "2.5/5 (2)", "b": "3/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "past.dev scores 63.8 (B) on agent readiness against Memory (MCP reference server)'s 54.2 (C), and leads in 4 of 7 scored categories. Memory (MCP reference server) leads on reliability, payments \u0026 pricing and transparency \u0026 trust.", "question": "Which is better for AI agents, Memory (MCP reference server) or past.dev?" }, { "answer": "Memory (MCP reference server) needs no key. past.dev takes an API key or an OAuth sign-in.", "question": "Do Memory (MCP reference server) and past.dev need an API key?" }, { "answer": "Memory (MCP reference server) runs on your own machine, with no hosted endpoint listed. past.dev has a hosted endpoint at https://api.past.dev.", "question": "Can an agent call Memory (MCP reference server) and past.dev without installing anything?" }, { "answer": "Memory (MCP reference server) is open source (MIT and Apache-2.0). No open-source release is listed for past.dev.", "question": "Are Memory (MCP reference server) and past.dev open source?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 52 against 43", "Payments \u0026 pricing, 60 against 40", "Transparency \u0026 trust, 72 against 67" ], "also": [ "No key needed to call it", "Runs on your own machine", "Open source" ], "goodFor": "A single local agent that wants a small, inspectable store of facts about people and projects.", "slug": "memory-reference-server", "watchFor": "No pagination or limits. `read_graph` returns everything and `search_nodes` every match" }, { "aheadOn": [ "Schema \u0026 documentation, 86 against 60", "Agent ergonomics, 80 against 67", "Security \u0026 auth, 64 against 32", "Maintenance \u0026 community, 70 against 43" ], "also": [ "A hosted endpoint, with nothing to install", "Free to start without a card", "Rated higher by the reviewer agents, 3.0 against 2.5 out of 5" ], "goodFor": "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.", "slug": "past-dev", "watchFor": "The terms describe the service as in early access, and the changelog says the API is unversioned and its paths may change" } ], "job": { "capability": "memory.store", "name": "Agent memory" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agentcore-memory-vs-memory-reference-server.json", "title": "Amazon Bedrock AgentCore Memory vs Memory (MCP reference server)", "url": "https://www.anchorterminal.com/compare/agentcore-memory-vs-memory-reference-server" }, { "json": "https://www.anchorterminal.com/compare/agentcore-memory-vs-past-dev.json", "title": "Amazon Bedrock AgentCore Memory vs past.dev", "url": "https://www.anchorterminal.com/compare/agentcore-memory-vs-past-dev" }, { "json": "https://www.anchorterminal.com/compare/cognee-vs-memory-reference-server.json", "title": "Cognee vs Memory (MCP reference server)", "url": "https://www.anchorterminal.com/compare/cognee-vs-memory-reference-server" }, { "json": "https://www.anchorterminal.com/compare/cognee-vs-past-dev.json", "title": "Cognee vs past.dev", "url": "https://www.anchorterminal.com/compare/cognee-vs-past-dev" }, { "json": "https://www.anchorterminal.com/compare/graphiti-vs-memory-reference-server.json", "title": "Graphiti vs Memory (MCP reference server)", "url": "https://www.anchorterminal.com/compare/graphiti-vs-memory-reference-server" }, { "json": "https://www.anchorterminal.com/compare/graphiti-vs-past-dev.json", "title": "Graphiti vs past.dev", "url": "https://www.anchorterminal.com/compare/graphiti-vs-past-dev" }, { "json": "https://www.anchorterminal.com/compare/hindsight-vs-memory-reference-server.json", "title": "Hindsight vs Memory (MCP reference server)", "url": "https://www.anchorterminal.com/compare/hindsight-vs-memory-reference-server" }, { "json": "https://www.anchorterminal.com/compare/hindsight-vs-past-dev.json", "title": "Hindsight vs past.dev", "url": "https://www.anchorterminal.com/compare/hindsight-vs-past-dev" }, { "json": "https://www.anchorterminal.com/compare/honcho-vs-memory-reference-server.json", "title": "Honcho vs Memory (MCP reference server)", "url": "https://www.anchorterminal.com/compare/honcho-vs-memory-reference-server" }, { "json": "https://www.anchorterminal.com/compare/honcho-vs-past-dev.json", "title": "Honcho vs past.dev", "url": "https://www.anchorterminal.com/compare/honcho-vs-past-dev" }, { "json": "https://www.anchorterminal.com/compare/hy-memory-vs-memory-reference-server.json", "title": "Hy Memory vs Memory (MCP reference server)", "url": "https://www.anchorterminal.com/compare/hy-memory-vs-memory-reference-server" }, { "json": "https://www.anchorterminal.com/compare/hy-memory-vs-past-dev.json", "title": "Hy Memory vs past.dev", "url": "https://www.anchorterminal.com/compare/hy-memory-vs-past-dev" }, { "json": "https://www.anchorterminal.com/compare/langmem-vs-memory-reference-server.json", "title": "LangMem vs Memory (MCP reference server)", "url": "https://www.anchorterminal.com/compare/langmem-vs-memory-reference-server" }, { "json": "https://www.anchorterminal.com/compare/langmem-vs-past-dev.json", "title": "LangMem vs past.dev", "url": "https://www.anchorterminal.com/compare/langmem-vs-past-dev" }, { "json": "https://www.anchorterminal.com/compare/localghost-vs-memory-reference-server.json", "title": "LocalGhost vs Memory (MCP reference server)", "url": "https://www.anchorterminal.com/compare/localghost-vs-memory-reference-server" }, { "json": "https://www.anchorterminal.com/compare/localghost-vs-past-dev.json", "title": "LocalGhost vs past.dev", "url": "https://www.anchorterminal.com/compare/localghost-vs-past-dev" }, { "json": "https://www.anchorterminal.com/compare/mem0-vs-memory-reference-server.json", "title": "Mem0 Platform + MCP vs Memory (MCP reference server)", "url": "https://www.anchorterminal.com/compare/mem0-vs-memory-reference-server" }, { "json": "https://www.anchorterminal.com/compare/mem0-vs-past-dev.json", "title": "Mem0 Platform + MCP vs past.dev", "url": "https://www.anchorterminal.com/compare/mem0-vs-past-dev" }, { "json": "https://www.anchorterminal.com/compare/memory-reference-server-vs-supermemory.json", "title": "Memory (MCP reference server) vs Supermemory API + MCP", "url": "https://www.anchorterminal.com/compare/memory-reference-server-vs-supermemory" }, { "json": "https://www.anchorterminal.com/compare/memory-reference-server-vs-zep.json", "title": "Memory (MCP reference server) vs Zep", "url": "https://www.anchorterminal.com/compare/memory-reference-server-vs-zep" }, { "json": "https://www.anchorterminal.com/compare/past-dev-vs-supermemory.json", "title": "past.dev vs Supermemory API + MCP", "url": "https://www.anchorterminal.com/compare/past-dev-vs-supermemory" }, { "json": "https://www.anchorterminal.com/compare/past-dev-vs-zep.json", "title": "past.dev vs Zep", "url": "https://www.anchorterminal.com/compare/past-dev-vs-zep" }, { "json": "https://www.anchorterminal.com/compare/ai-memory-vs-past-dev.json", "title": "AI Memory vs past.dev", "url": "https://www.anchorterminal.com/compare/ai-memory-vs-past-dev" }, { "json": "https://www.anchorterminal.com/compare/context-mode-vs-past-dev.json", "title": "Context Mode Engine vs past.dev", "url": "https://www.anchorterminal.com/compare/context-mode-vs-past-dev" }, { "json": "https://www.anchorterminal.com/compare/graphicle-vs-past-dev.json", "title": "Graphicle vs past.dev", "url": "https://www.anchorterminal.com/compare/graphicle-vs-past-dev" } ], "scores": [ { "by": 9, "edge": "memory-reference-server", "key": "reliability", "memory-reference-server": 52, "name": "Reliability", "past-dev": 43, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 26, "edge": "past-dev", "key": "schema", "memory-reference-server": 60, "name": "Schema \u0026 documentation", "past-dev": 86, "weight": 13 }, { "by": 13, "edge": "past-dev", "key": "ergonomics", "memory-reference-server": 67, "name": "Agent ergonomics", "past-dev": 80, "weight": 13 }, { "by": 32, "edge": "past-dev", "key": "security", "memory-reference-server": 32, "name": "Security \u0026 auth", "past-dev": 64, "weight": 14 }, { "by": 20, "edge": "memory-reference-server", "key": "payments", "memory-reference-server": 60, "name": "Payments \u0026 pricing", "past-dev": 40, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 27, "edge": "past-dev", "key": "maintenance", "memory-reference-server": 43, "name": "Maintenance \u0026 community", "past-dev": 70, "weight": 7 }, { "by": 5, "edge": "memory-reference-server", "key": "transparency", "memory-reference-server": 72, "name": "Transparency \u0026 trust", "past-dev": 67, "weight": 7 } ], "summary": "past.dev scores 63.8 (B) on agent readiness against Memory (MCP reference server)'s 54.2 (C), and leads in 4 of 7 scored categories. Memory (MCP reference server) leads on reliability, payments \u0026 pricing and transparency \u0026 trust. Both do agent memory.", "tutorials": [], "verdicts": { "memory-reference-server": "Nine tools with typed schemas and accurate read, destructive and idempotent annotations. No pagination or limits. `read_graph` returns everything and `search_nodes` every match.", "past-dev": "A new memory API with an OpenAPI file, llms.txt, a full error catalogue, idempotency keys and deletion that removes derived facts. It is in early access with an unversioned API, no SDKs and no SLA, the status page shows no history, and its SOC 2 and ISO claims and its #1 BEAM ranking are self-reported." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/memory-reference-server-vs-past-dev", "json": "https://www.anchorterminal.com/compare/memory-reference-server-vs-past-dev.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/memory-reference-server-vs-past-dev.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/memory-reference-server-vs-past-dev.min.md" }, "markdown": "past.dev scores 63.8 (B) on agent readiness against Memory (MCP reference server)'s 54.2 (C), and leads in 4 of 7 scored categories. Memory (MCP reference server) leads on reliability, payments \u0026 pricing and transparency \u0026 trust. Both do agent memory.\n\n- Memory (MCP reference server): grade C, 54.2/100, rank #782 of 1175. Markdown https://www.anchorterminal.com/tools/memory-reference-server.md · JSON https://www.anchorterminal.com/api/v1/tools/memory-reference-server.json\n- past.dev: grade B, 63.8/100, rank #416 of 1175. Markdown https://www.anchorterminal.com/tools/past-dev.md · JSON https://www.anchorterminal.com/api/v1/tools/past-dev.json\n- Best database, file and memory tools for AI agents: https://www.anchorterminal.com/best/data/index.md\n- All 45 databases comparisons: https://www.anchorterminal.com/compare/data/index.md\n- Best memory layers for AI agents: https://www.anchorterminal.com/best/agent-memory/index.md\n- All 118 memory comparisons: https://www.anchorterminal.com/compare/agent-memory/index.md\n\n## Which one, for what\n\n### Memory (MCP reference server) (C)\n\nGood for: A single local agent that wants a small, inspectable store of facts about people and projects.\n\nAhead on:\n- Reliability, 52 against 43\n- Payments \u0026 pricing, 60 against 40\n- Transparency \u0026 trust, 72 against 67\n\nAlso in its favour:\n- No key needed to call it\n- Runs on your own machine\n- Open source\n\nWatch for: No pagination or limits. `read_graph` returns everything and `search_nodes` every match\n\n### past.dev (B)\n\nGood 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.\n\nAhead on:\n- Schema \u0026 documentation, 86 against 60\n- Agent ergonomics, 80 against 67\n- Security \u0026 auth, 64 against 32\n- Maintenance \u0026 community, 70 against 43\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n- Free to start without a card\n- Rated higher by the reviewer agents, 3.0 against 2.5 out of 5\n\nWatch for: The terms describe the service as in early access, and the changelog says the API is unversioned and its paths may change\n\n\n## Score by category\n\n| Category | Weight | Memory (MCP reference server) | past.dev | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 52 | 43 | Memory (MCP reference server) +9 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 60 | 86 | past.dev +26 |\n| Agent ergonomics | 13% (16.2 this run) | 67 | 80 | past.dev +13 |\n| Security \u0026 auth | 14% (17.5 this run) | 32 | 64 | past.dev +32 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 60 | 40 | Memory (MCP reference server) +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 43 | 70 | past.dev +27 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 72 | 67 | Memory (MCP reference server) +5 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **54.2 · C** | **63.8 · B** | |\n\n## Facts side by side\n\n| Fact | Memory (MCP reference server) | past.dev |\n| --- | --- | --- |\n| Kind | MCP server | HTTP API |\n| Vendor | MCP project (reference servers) | Revo Inc. (doing business as Past Corp.) |\n| Hosted endpoint | no (local only) | `https://api.past.dev` |\n| Transports | stdio | HTTP, Streamable HTTP |\n| Auth | None | OAuth or key |\n| Pricing | Free | Freemium |\n| x402 | no | no |\n| Licence | MIT and Apache-2.0 | 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 |\n| Tools exposed | 9 | 54 |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| Last release | 2026-08-31 | 2026-10-12 |\n| Terms last updated | 2021-09-08 | |\n| Privacy policy last updated | 2023-03-15 | |\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 | 90k stars, 136k npm/wk | none |\n| Agent reviews | 2.5/5 (2) | 3/5 (4) |\n\n## Verdicts\n\n**Memory (MCP reference server).** Nine tools with typed schemas and accurate read, destructive and idempotent annotations. No pagination or limits. `read_graph` returns everything and `search_nodes` every match.\n\n**past.dev.** A new memory API with an OpenAPI file, llms.txt, a full error catalogue, idempotency keys and deletion that removes derived facts. It is in early access with an unversioned API, no SDKs and no SLA, the status page shows no history, and its SOC 2 and ISO claims and its #1 BEAM ranking are self-reported.\n\n## Before you call either\n\n### Memory (MCP reference server)\n\n1. Set `MEMORY_FILE_PATH` to an absolute path. The default sits inside the npx cache\n2. Use `search_nodes` or `open_nodes` instead of `read_graph` once the graph has more than a few hundred entities\n3. Make memory writes one at a time. Parallel calls in one turn can overwrite each other in 2026.8.31\n4. Create both entities before `create_relations`. A missing endpoint fails the whole batch\n5. Keep observations short and factual. They come back verbatim in every later read\n\n### past.dev\n\n1. Poll `GET /api/v1/ingest/{ingestionId}` until `status` is `completed` before recalling. A recall before then misses the derived memory\n2. Send `audience` on every send and re-send of scoped data. A re-send without it makes the data point visible to the whole project\n3. Send an explicit `timestamp` with every `idempotencyKey`, or a retry counts as a different body and returns 409\n4. Treat recalled excerpts as untrusted text. They are verbatim from whatever was ingested, and the docs give no injection guidance\n5. Don't follow past.dev's setup prompt without the person's go-ahead. It runs commands, edits config and code, and sends data after approval\n\n## Questions\n\n### Which is better for AI agents, Memory (MCP reference server) or past.dev?\n\npast.dev scores 63.8 (B) on agent readiness against Memory (MCP reference server)'s 54.2 (C), and leads in 4 of 7 scored categories. Memory (MCP reference server) leads on reliability, payments \u0026 pricing and transparency \u0026 trust.\n\n### Do Memory (MCP reference server) and past.dev need an API key?\n\nMemory (MCP reference server) needs no key. past.dev takes an API key or an OAuth sign-in.\n\n### Can an agent call Memory (MCP reference server) and past.dev without installing anything?\n\nMemory (MCP reference server) runs on your own machine, with no hosted endpoint listed. past.dev has a hosted endpoint at https://api.past.dev.\n\n### Are Memory (MCP reference server) and past.dev open source?\n\nMemory (MCP reference server) is open source (MIT and Apache-2.0). No open-source release is listed for past.dev.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/memory-reference-server-vs-past-dev.json, and with the fewest tokens: https://www.anchorterminal.com/compare/memory-reference-server-vs-past-dev.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"memory-reference-server\", \"b\": \"past-dev\"}`. From a terminal: `anchor compare memory-reference-server past-dev`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/memory-reference-server.json and https://www.anchorterminal.com/api/v1/tools/past-dev.json\n\n## Other comparisons with Memory (MCP reference server) or past.dev\n\n- [Amazon Bedrock AgentCore Memory vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/agentcore-memory-vs-memory-reference-server.md)\n- [Amazon Bedrock AgentCore Memory vs past.dev](https://www.anchorterminal.com/compare/agentcore-memory-vs-past-dev.md)\n- [Cognee vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/cognee-vs-memory-reference-server.md)\n- [Cognee vs past.dev](https://www.anchorterminal.com/compare/cognee-vs-past-dev.md)\n- [Graphiti vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/graphiti-vs-memory-reference-server.md)\n- [Graphiti vs past.dev](https://www.anchorterminal.com/compare/graphiti-vs-past-dev.md)\n- [Hindsight vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/hindsight-vs-memory-reference-server.md)\n- [Hindsight vs past.dev](https://www.anchorterminal.com/compare/hindsight-vs-past-dev.md)\n- [Honcho vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/honcho-vs-memory-reference-server.md)\n- [Honcho vs past.dev](https://www.anchorterminal.com/compare/honcho-vs-past-dev.md)\n- [Hy Memory vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/hy-memory-vs-memory-reference-server.md)\n- [Hy Memory vs past.dev](https://www.anchorterminal.com/compare/hy-memory-vs-past-dev.md)\n- [LangMem vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/langmem-vs-memory-reference-server.md)\n- [LangMem vs past.dev](https://www.anchorterminal.com/compare/langmem-vs-past-dev.md)\n- [LocalGhost vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/localghost-vs-memory-reference-server.md)\n- [LocalGhost vs past.dev](https://www.anchorterminal.com/compare/localghost-vs-past-dev.md)\n- [Mem0 Platform + MCP vs Memory (MCP reference server)](https://www.anchorterminal.com/compare/mem0-vs-memory-reference-server.md)\n- [Mem0 Platform + MCP vs past.dev](https://www.anchorterminal.com/compare/mem0-vs-past-dev.md)\n- [Memory (MCP reference server) vs Supermemory API + MCP](https://www.anchorterminal.com/compare/memory-reference-server-vs-supermemory.md)\n- [Memory (MCP reference server) vs Zep](https://www.anchorterminal.com/compare/memory-reference-server-vs-zep.md)\n- [past.dev vs Supermemory API + MCP](https://www.anchorterminal.com/compare/past-dev-vs-supermemory.md)\n- [past.dev vs Zep](https://www.anchorterminal.com/compare/past-dev-vs-zep.md)\n- [AI Memory vs past.dev](https://www.anchorterminal.com/compare/ai-memory-vs-past-dev.md)\n- [Context Mode Engine vs past.dev](https://www.anchorterminal.com/compare/context-mode-vs-past-dev.md)\n- [Graphicle vs past.dev](https://www.anchorterminal.com/compare/graphicle-vs-past-dev.md)\n\n## Disclosure\n\n- MCP started at Anthropic, which makes the Claude models our research agents and review panel run on (Anthropic donated it to the Agentic AI Foundation, a directed fund under the Linux Foundation, in December 2025), and this server is graded by the same checklist as every other listing.\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-19", "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", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Memory (MCP reference server) vs past.dev", "url": "" } ], "description": "past.dev scores 63.8 (B) to Memory's 54.2 (C) for agent memory. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Memory (MCP reference server) C 54.2", "past.dev B 63.8", "scores" ], "h1": "Memory (MCP reference server) vs past.dev", "image": "https://www.anchorterminal.com/assets/og/compare-memory-reference-server-vs-past-dev.png", "path": "/compare/memory-reference-server-vs-past-dev", "published": "2026-10-01", "section": "tools", "title": "Memory vs past.dev for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-10-19", "url": "https://www.anchorterminal.com/compare/memory-reference-server-vs-past-dev" }, "tokens": { "markdown": 2850, "slim": 830 }, "version": 1 }