The memory layer
your agents are missing.
ContextQ gives AI coding agents persistent, searchable memory that compounds across conversations, projects, and tools. Built on Postgres + pgvector + Elasticsearch with PKM-grade memory evolution.
31
MCP tools
6
Agent clients
RRF
Hybrid search
# Save a decision once, available everywhere
$ /ctq save "Auth flow uses Zitadel JWT, RS256 only"
saved · ctx_4f2 · type=reference
# Hybrid retrieval the next session, the next project
$ /ctq search "how do we sign tokens"
full-text + vector + RRF fusion
3 results · 92ms · rank=ctx_4f2
# Synthesize across stored knowledge
$ /ctq dream
clustering 47 entries...
synth 3 MOCs · 12 supersedes · 4 archived
Works with the agents you already use
Features
Memory that thinks, not just stores.
Vector DBs give you embeddings. ContextQ gives you a second brain that clusters, links, and prunes itself.
Dream synthesis
LLM-assisted passes cluster related entries, write durable summaries, and archive the originals — keeping your memory atomic and discoverable. Think weekly retrospective for your second brain.
Hybrid search
Full-text (Postgres tsvector + Elasticsearch BM25) fused with pgvector cosine via Reciprocal Rank Fusion. Find context fast, even with vague queries.
Typed links
Wikilinks resolve to typed edges (supersedes, contradicts, derived_from). Memory evolution auto-archives outdated entries.
31 MCP tools, one endpoint
Drop the HTTP MCP URL + your API key into Claude Code, Cursor, Codex, Gemini, Windsurf, Cline. Every agent gets the same memory.
Tamper-evident audit chain
Every write is hash-chained. Verify integrity on demand, export CSV, set per-tenant retention. Tenant-isolated row-level security + AES at rest.
How we compare
Not just a vector DB. Not just a memory API.
ContextQ is the only stack that combines hybrid retrieval, PKM-grade evolution, and developer-tool ergonomics.
| Capability |
ContextQ
| Mem0 | Zep | Pinecone |
|---|---|---|---|---|
| Hybrid full-text + vector + RRF | partial | partial | — | |
| Dream / synthesis (LLM-assisted) | — | — | — | |
| Typed links + MOC clustering | — | — | — | |
| Memory evolution (auto-archive) | partial | — | — | |
| MCP native (31 tools) | — | — | — | |
| Tamper-evident audit chain | — | — | — | |
| Bi-temporal lifecycle | — | — | — | |
| Entry-level price | Free 1k / $19 | $19+ | $99+ | $70+ |
Comparison reflects publicly available pricing and feature pages as of May 2026. Independent assessment, not affiliated.
Get started
Three steps. Five minutes.
Two install paths — universal MCP, or the /ctq skill for Claude Code power users.
Create an API key
Sign up free, no credit card. Create a tenant, generate a scoped API key from the dashboard.
Connect your agent
Paste the MCP endpoint into Claude Code, Cursor, Codex, Gemini CLI, Windsurf, or Cline. Tools auto-discover.
Save and search
Your agents now share memory across sessions, projects, and editors. Decisions compound instead of evaporating.
Drop-in config
.mcp.json{
"mcpServers": {
"contextq": {
"type": "http",
"url": "https://api.contextq.dev/mcp",
"headers": {
"Authorization": "Bearer ctq_••••••••"
}
}
}
} Works the same in Cursor, Codex, Gemini, Windsurf, Cline.
Tool surface
31 tools. Seven groups. One memory layer.
Full CRUD, PKM operations, ingest, events, admin — every capability the agent needs.
Pricing
Start free. Scale when ready.
All plans include hybrid search, MCP integration, audit chain, and tenant isolation. Cancel anytime.
Free
For personal projects
$0 forever
- 1,000 context entries
- 1 dream synthesis per day
- Hybrid search (full-text + vector)
- MCP integration
Pro
For solo builders shipping fast
$19 /mo
$190/yr · save 17%
- 10,000 context entries
- 200 dream syntheses / month
- Full memory evolution (auto-archive, MOCs)
- External LLM (Claude Sonnet) for premium synth
- 90-day audit log + CSV export
Team
For teams scaling memory together
$79 /mo
$790/yr · save 17%
- 50,000 context entries
- 1,000 dream syntheses / month
- 5 team seats (+$9 each extra)
- Priority email support
- 365-day audit log + 99.5% uptime SLA
Enterprise
For organizations with custom needs
Custom
starting $499/mo
- Unlimited entries + queries
- Custom domain + SSO/SAML
- Bring-your-own-key (Anthropic, embedding)
- 99.9% custom SLA + dedicated support
- Custom audit retention + dedicated infra
All plans include tenant isolation, AES-256 encryption at rest, and the tamper-evident audit chain.
Stop teaching your agents
the same thing twice.
Free for the first 1,000 entries. No credit card. Five minutes to set up.