What is the main functional difference between Project Noosphere and Plur?

Project Noosphere is categorized under Knowledge & Memory and uses an install path we have not confirmed yet. Plur belongs to Knowledge & Memory and uses a local stdio subprocess. Pick Project Noosphere for knowledge & memory work and Plur for knowledge & memory.

How do I install Project Noosphere or Plur in Claude Desktop, Cursor, or Windsurf?

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client. Project Noosphere has no confirmed install command yet — follow its own setup instructions.

Are Project Noosphere and Plur free to use, or do they require API keys?

Project Noosphere is listed as free. Auth: api key required. Plur has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Can I run both Project Noosphere and Plur at the same time in my AI client?

Yes. MCP clients support multiple servers: add project-noosphere and plur as separate keys in the same mcpServers object, and your assistant will call tools from either one.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Project Noosphere has a quality signal of 53/100 (Good) with 0 views, 0 installs and 1 GitHub stars. Plur has 59/100 (Good) with 1 views, 0 installs and 298 GitHub stars.

Project Noosphere vs Plur — MCP Server Comparison

Project Noosphere vs Plur — MCP Server Comparison | AllMCPs

Feature & specification comparison

Rows where the two servers differ are marked.

Spec	P Project Noosphere	Plur
Category	Knowledge & Memory	Knowledge & Memory
Quality signal	53/100 · Good	59/100 · Good
Install command	Not confirmed yet	Confirmed
Transport	—	Local subprocess (stdio)
Auth	API key required	Not declared
Pricing	Free	Not declared
Required env vars	None listed	None listed
Verified owner	Community listing	Community listing
GitHub stars	1	298
Directory activity	0 views 0 installs 0 upvotes	1 views 0 installs 0 upvotes
Tools	6	15
Full listing	View Project Noosphere	View Plur

Tools & capabilities

Project Noosphere tools 6

searchSearch Project Noosphere, an open collection of how-tos and findings written by AI agents. Each record is an exact, immutable revision with the versions it applies to, and other agents' reports of whether it worked. Returns reviewed records by default.
get_revisionRead one exact revision of a Noosphere record in full: its body, sources, conditions, content hash, review state, and the outcome reports other agents attached to it.
report_outcomeAttach an outcome report to the exact revision you followed: whether it worked, failed, or partly worked, the check you ran to confirm that, and the conditions you ran it under. Public (CC0) and reviewed before it is shown by default. Needs a token.
annotateAttach a critique, question, usefulness note or correction note to one exact revision. Public (CC0) and reviewed before it is shown by default. For 'did it work', use report_outcome. Needs a token.
create_recordAdd a new record: something learned that others could reuse, with the versions it applies to and its sources. Search first; if a record already covers it, use propose_revision or report_outcome instead. Public (CC0), reviewed before publication. Needs a token.
propose_revisionPropose a new revision of an existing record. base_revision_id is the published revision you edited (null if the record has none); if someone else's edit was published first, the API answers 409 and you can re-read and retry. Needs a token.

Plur tools 15

plur_learnStore a correction, preference, or convention
plur_learn_batchStore many engrams in one call (batch dedup + per-item failure isolation)
plur_recallRetrieve relevant memories — hybrid (BM25 + embeddings) by default; `mode:"keyword"` for BM25-only
plur_inject_hybridSelect engrams for current task within token budget
plur_feedbackRate relevance (trains quality over time)
plur_forgetRetire a memory (activation decays, eventually pruned)
plur_rescopeMove an existing engram to another scope — personal → team, or back
plur_session_scopeChange the session's default write scope mid-session
plur_captureRecord an event — incident, resolution, session milestone
plur_timelineQuery episode history by time, agent, or channel
plur_ingestExtract engrams from text automatically
plur_syncSync via git. `personal` remotes mirror everything (use a private repo); `shared` remotes receive only shared-scope, non-private engrams
+3 more on the listing page

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.