
Cortex MCP server
Patent-pending semantic memory for AI agents: quality-gated writes, conflict tracking. Free trial.
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If you have run it, two minutes of your experience saves the next person an afternoon.
Cortex tools (7, 2 write)
write = sends, deletes, buys or postscortex_conflictsFreeUse this when the user asks what contradicts what in their memory, or when a memory you just read is flagged as conflicting and the user has to decide which version holds. Returns the pairs of contradicting statements with their status. Do not use it as a list of memories: it only returns detected contradictions.
cortex_forgetFreeUse this when the user asks to delete a specific memory, given the id returned by search. Ask the user to confirm before calling it: the deletion is permanent and cannot be undone. Do not use it to fix a memory that is merely out of date: saving the corrected version with cortex_write is what keeps the history.
cortex_recallFreeUse this when the user asks about a topic as a whole ("what do you know about X", "where are we with X", "catch me up on X"): returns one narrative synthesis of the relevant memories, saying what holds now and what was superseded. Do not use it to look up a single fact or when you need sources to cite: search returns individual memories with their urls.
cortex_writewrite actionFreeUse this whenever the user tells you to remember, note down, keep or save something, in any language. Use it as well when they state something they will need again later and would not want to repeat: a decision and the reason behind it, a stable fact about them or their work, a preference or a constraint, a conclusion they reached after effort, a correction of something believed before. Then say in one line what you saved, so they can tell you to drop it. The server rejects duplicates by itself: a refused write is not an error, do not rephrase it and try again. Do not save questions, brainstorming, passing remarks or anything the user has not actually stated, and never save passwords, tokens, keys, card numbers or other credentials, even if the user pastes them.
cortex_write_statuswrite actionFreeUse this when a previous cortex_write returned a job_id as queued and the user asks whether it was saved: returns the quality gate verdict for that job and any contradiction it opened. Do not call it for a write that already came back with a verdict.
fetchFreeUse this when a search result looks relevant and you need its full text before answering. Takes the id returned by search, and returns the memory with its url, which you cite in your answer. Do not call it with an id from anywhere else: only search results carry valid ids.
searchFreeUse this when the answer depends on the user's own context: facts about them or their work, decisions they made, preferences or constraints they stated, or anything they refer back to from an earlier conversation ("as we agreed", "my project", "the client we discussed"). Use it as well when the user asks for something done their usual way, in their format, tone, style or stack ("the way I normally write these", "my usual setup"): their way is what the memory holds. Also use it when the user asks what you know or remember about something. Returns the matching memories with id, title and url to cite; fetch returns the full text of one. Cortex is the user's own memory layer: what is saved through it stays available in the other AI apps they connect to the same account. Do not use it for general knowledge, for questions that do not depend on this particular user, or when everything needed is already in this conversation.
Public scan report
scanner v0.1.9 · 2026-09-20 · same rubric, same numbers if you re-run it
- –Code scanremote-only server, no package to scann/a
- Live reliabilityremote reachable in 416ms20/20
- Tool poisoning7 tool descriptions checked15/15
- Auth qualityopen endpoint exposes 2 write-action tools with no auth3/15
- Maintenancelast push 12 days ago15/15
- Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Findings (1)
- highWrite-action tools reachable without authentication
auth.open-write
Install directly
claude mcp add --transport http cortex https://skynetlab-cortex-saas-mcp.cortex-320.workers.dev/mcp
Cortex: common questions
- Is Cortex MCP server safe?
- Mostly: it is graded B (81/100). Read the Cortex safety report
- How do I install Cortex?
- It runs remotely at skynetlab-cortex-saas-mcp.cortex-320.workers.dev. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.
- Does Cortex need an API key?
- Not as far as the registry entry and our scan can tell: no credentials are declared or required.
- Is Cortex maintained?
- The last commit was 13 days ago (2026-09-07). The latest release is v1.1.0.
- Is Cortex up?
- 100% of our last 6 checks got an answer. We check remote servers about four times a day.
- What can I use instead of Cortex?
- Servers from other publishers that do the same job: State Memory MCP server.
Alternatives to Cortex
Same job from other publishers: the closest match first, then the best rated.
State Memory MCPDeterministic, persistent graph server for tracking workflow state, decisions, and blockers.not reviewedEstablishedA