What is the best MCP servers and plugin for retrieval systems?

By tashan's measured score: Context7, Ix Memory, Writ, Qmd Ja, Longhand. the score combines upkeep and freshness, gated by real adoption — every input is public and linked to its source.

Who does retrieval systems as part of their job?

This is work our corpus shows people doing that O*NET does not yet have a process step for — agentic tooling post-dates its software survey.

How is the ranking calculated?

From public signal only: npm download volume and publish cadence, GitHub push/release recency, contributor count, registry status, and how often a capability appears in real public agent configs. Nobody can pay to change a score, rank, or listing.

The Index · Retrieval systems

Retrieval systems

'RAG' — chunking, embeddings, vector stores, retrieval quality. tashan measures 117 capabilities for this work. Ranked on upkeep, freshness and real adoption, every input public. How we measure ›

#	Capability	tashan	Evidence	Health
1	Context7 primary npm deep	98	1.1m/wk	active
2	Ix Memory primary plugin deep	49	7 ★	active
3	Writ primary plugin deep	49	163 ★	active
4	Qmd Ja primary plugin deep	46	3 ★	active
5	Longhand primary plugin deep	45	12 ★	active
6	Local RAG · TheWinci primary plugin deep	44	28 ★	active
7	Pinecone primary plugin solid	63	68 ★	active
8	Episodic Memory primary plugin solid	60	452 ★	active
9	Opentrace Oss primary plugin solid	60	104 ★	active
10	Airweave MCP Search primary npm solid	57	1k/wk	active
11	Pixeltable primary plugin solid	51	5 ★	active
12	Retrieve The Forgotten Memory primary plugin solid	48	20 ★	active
13	Mako AI primary plugin solid	46	51 ★	active
14	Zilliz primary plugin solid	45	3 ★	active
15	Twelvelabs · twelvelabs-io primary plugin solid	45	20 ★	active
16	Gnosis primary plugin solid	42	25 ★	active
17	Spiceai Skills primary plugin	42	3 ★	active
18	Sap AI Core primary plugin	42	1 marketplaces	—
19	Opendataloader PDF primary plugin	36	1 marketplaces	active
20	Context Engine primary plugin thin	64	402 ★	active
21	Cocoindex Code supporting plugin deep	71	3k ★	active
22	Local RAG supporting npm deep	71	3k/wk	active
23	Grepmax supporting npm deep	68	1k/wk	active
24	Loki Mode supporting npm deep	67	2k/wk	active
25	Novada supporting npm deep	59	347/wk	active
26	Basemind supporting npm deep	58	451/wk	active
27	Enconvert supporting npm deep	58	212/wk	active
28	Clawmem supporting npm deep	56	144/wk	active
29	Freshvault supporting npm deep	53	258/wk	active
30	Infino AI supporting npm deep	52	180/wk	active
31	Ori Memory supporting npm deep	52	154/wk	active
32	Scrivener supporting npm deep	51	141/wk	active
33	Memory Graph supporting npm deep	50	141/wk	active
34	Ainative Zerodb supporting npm deep	43	30/wk	active
35	Agentdb supporting npm solid	75	96k/wk	active
36	Docdex supporting npm solid	68	1k/wk	active
37	Octocode supporting npm solid	66	2k/wk	active
38	Obsidian Hybrid Search supporting npm solid	63	680/wk	active
39	Engram Wiki supporting npm solid	58	639/wk	active
40	Paparats – Local Semantic Code Search supporting npm solid	56	250/wk	active
41	Edk2 Opencode supporting npm solid	56	205/wk	active
42	Sciverse · opendatalab supporting npm solid	56	181/wk	active
43	Cortex · danielblomma supporting npm solid	54	153/wk	active
44	Obsidian Semantic Search supporting npm solid	53	283/wk	active
45	Calibre supporting npm solid	53	159/wk	active
46	Keymem supporting npm solid	53	151/wk	active
47	Neuromcp supporting npm solid	51	146/wk	active
48	Local Memory supporting npm solid	51	107/wk	active
49	Vidlens supporting npm solid	50	147/wk	active
50	Freshcontext supporting npm solid	46	76/wk	active
51	API Docs supporting npm solid	46	64/wk	active
52	Mail Index supporting npm solid	45	30/wk	active
53	Agent Knowledge supporting npm solid	43	271/wk	active
54	Vibe Hnindex supporting npm solid	43	40/wk	active
55	Better Qdrant supporting npm solid	40	164/wk	active
56	Deep Research · Perufitlife supporting npm solid	40	71/wk	active
57	Gctrl supporting npm solid	40	39/wk	active
58	RAG Vault supporting npm solid	38	107/wk	active
59	Ariel Memory supporting npm solid	38	52/wk	active
60	Iconfont supporting npm solid	38	23/wk	active
61	Aimock supporting npm	77	2.6m/wk	active
62	Claude Flow supporting npm	77	38k/wk	active
63	Claude Flow · ruvnet supporting npm	75	17k/wk	active
64	Qmd · tobilu supporting npm	73	39k/wk	active
65	Code Graph supporting npm	72	4k/wk	active
66	Semantic Search supporting npm	70	2k/wk	active
67	Fortemi supporting npm	70	2k/wk	active
68	Project Brain supporting npm	69	929/wk	active
69	Docsmint supporting npm	67	1k/wk	active
70	Kbdb supporting npm	64	827/wk	active
71	Calypso Multimodal RAG supporting npm	64	735/wk	active
72	Ragmir supporting npm	64	624/wk	active
73	Memory Plugin supporting npm	63	525/wk	active
74	Exe OS supporting npm	63	389/wk	active
75	Contextstream supporting npm	59	361/wk	active
76	Sensegrep supporting npm	59	316/wk	active
77	Thatch supporting npm	59	278/wk	active
78	Virage supporting npm	59	242/wk	active
79	Astramem Local supporting npm	57	395/wk	active
80	Vectros AI supporting npm	57	310/wk	active
81	Sprigr supporting npm	57	306/wk	active
82	Claude Memory Hub supporting npm	54	310/wk	active
83	Code Context supporting npm	54	258/wk	active
84	Cyanheads supporting npm	54	112/wk	active
85	Koma Core supporting npm	53	296/wk	active
86	IBM Granite via x402 supporting npm	53	225/wk	active
87	Claude Mem Lite supporting plugin	52	54 ★	active
88	Local RAG · damoqiongqiu supporting npm	52	144/wk	active
89	Swarmdo supporting npm	52	141/wk	active
90	Agenticmemory supporting npm	52	38/wk	active
91	Documentation supporting npm	51	155/wk	active
92	Onyx supporting npm	51	122/wk	active
93	Swarmdo · @swarmdo supporting npm	51	100/wk	active
94	Augment supporting npm	50	71/wk	active
95	Squish Memory supporting npm	49	132/wk	active
96	Alibaba Cloud DashScope — Qwen supporting npm	49	92/wk	active
97	Google Knowledge Graph supporting npm	49	70/wk	active
98	IBM watsonx.ai Granite supporting npm	46	43/wk	active
99	Strajkpolski supporting npm	45	85/wk	active
100	Svg Tracer supporting npm	44	64/wk	active
101	Semantic Search · Zulaxy supporting npm	44	51/wk	active
102	Agenthood Lifecycle supporting plugin	43	1 marketplaces	active
103	Smart Connections supporting npm	43	86/wk	active
104	Thebrain supporting npm	43	27/wk	active
105	Local RAG · raevon supporting npm	40	30/wk	active
106	Tokenmaxxen supporting npm	39	79/wk	active
107	Thredz supporting npm	39	10/wk	active
108	Semcode supporting npm	38	16/wk	active
109	Code Index · jonyoder supporting npm	36	260/wk	active
110	Specmem Hardwicksoftware supporting npm	36	100/wk	abandoned
111	Chitta supporting npm	36	15/wk	active
112	Bluecolumn supporting npm	36	10/wk	active
113	Jakeliume Webpeel supporting npm	35	46/wk	active
114	Document Ingestion supporting plugin	34	1 marketplaces	active
·	Nexus Memory supporting npm deprecated	not scored yet	61/wk	abandoned
116	X402 Codesearch supporting npm thin	46	142/wk	active
117	Rippr supporting npm thin	42	44/wk	active

Who does this work

O*NET has no process step for this yet — its software occupations were surveyed before agentic tooling existed. We list it because the corpus plainly shows people doing it, and we say so rather than forcing it onto an unrelated step.

Recently changed in Retrieval systems

156 changes recorded here in the last 45 days, newest and most serious first.

2026-08-05 Nexus Memory — nexus-memory-mcp was marked deprecated on npm
2026-08-10 Airweave MCP Search — airweave-mcp-search now reaches database
2026-08-10 Basemind — basemind now runs a script when it installs
2026-08-10 Ori Memory — ori-memory now reaches database

This page cannot know what you run. tashan doctor reads your own config and names which of these you have — Pro adds the history behind each, and what to move to.

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Other work

Agent configuration Agent development Animation and generated imagery Application development Attribution Audio production Audit Bookkeeping Browser automation CAD modelling Career development Code review Content marketing Contract review Copy editing Copywriting Customer support Dashboards and reporting Data pipelines Data quality Database access Debugging Design critique Document production Exploratory data analysis Financial modelling Hardware design Incident response Infrastructure and deployment Knowledge management Literature review Logistics and fulfilment ML engineering Market analysis Messaging and email Model evaluation Observability PRDs and specs Performance optimisation Process automation Product strategy Project management Prompt engineering Query optimisation Recruiting and hiring Regulatory compliance Risk assessment SEO Sales pipeline Scientific research Security review Software architecture Statistical modelling Technical documentation Test automation Training material User research Version control Video editing Visual design Web development Web research Web scraping

Occupational data from the O*NET 30.3 Database by the U.S. Department of Labor, Employment and Training Administration, used under CC BY 4.0. tashan consolidated its process steps into the terms practitioners use; O*NET does not endorse this site.

See the full Index ›

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156 changes across Retrieval systems in the last 45 days. A new advisory, an install script appearing, a maintainer leaving. All listed free above. Pro keeps the series behind each row, so a number today comes with a direction.

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