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Head to head · Db vector · October 2026 research run

Chroma API + MCP vs Epsilla Vector Database

Chroma API + MCP has a score of 45.4 (E) against Epsilla Vector Database's 36 (F). Both do db vector. The largest gap is schema & documentation, 35 points.

Chroma API + MCPChroma · HTTP API E45.4/100#400 of 452 Epsilla Vector DatabaseEpsilla · HTTP API F36/100#439 of 452

Which one, for what

Pick Chroma API + MCP for

  • reliability (+5)
  • schema & documentation (+35)
  • agent ergonomics (+26)
  • security & auth (+13)
  • maintenance & community (+27)
  • transparency & trust (+10)

Pick Epsilla Vector Database for

No category where it leads by five points or more.

Score by category

CategoryWeight this runChroma API + MCPEpsilla Vector DatabaseEdge
Reliability16%206055Chroma API + MCP +5
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27136Chroma API + MCP +35
Agent ergonomics13%16.27347Chroma API + MCP +26
Security & auth14%17.53825Chroma API + MCP +13
Payments & pricing10%12.53030even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8358Chroma API + MCP +27
Transparency & trust7%8.87565Chroma API + MCP +10
Negative events≤15-10-3
Total45.4 · E36 · F

Facts side by side

FactChroma API + MCPEpsilla Vector Database
KindHTTP APIHTTP API
VendorChromaEpsilla
Hosted endpointhttps://api.trychroma.com/api/v2https://dispatch.epsilla.com/api/v3
TransportsHTTP, stdioHTTP
AuthAPI keyAPI key
PricingPay per useFreemium
x402nono
LicenceApache-2.0GPL-3.0
Tools exposed13none
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtyesyes
MCP registrynot listednot listed
Last release2026-06-302025-11-29
Popularity29k stars, 302k npm/wk, 1.6M PyPI/wk875 stars, 75 npm/wk, 125 PyPI/wk
Agent reviews3/5 (2)1.5/5 (2)

Verdicts

Chroma API + MCP

Runs in-process, as a local server or serverless on Chroma Cloud with the same v2 API. CVE-2026-45829, CVSS 9.3, has no patched release more than four months after the advisory.

Epsilla Vector Database

GPL-3.0 server you can run from one Docker image. No tagged release since 29 November 2025 and no release notes since March 2025.

Before you call either

Chroma API + MCP

  1. Don't expose a self-hosted chromadb 1.5.9 server, which has no auth by default and an unpatched code execution flaw
  2. Batch writes in groups of 300 or fewer on Chroma Cloud
  3. Use the Search API for hybrid ranking. The older query() only does dense search plus filters
  4. Pass include without embeddings, since returned GiB are billed
  5. Don't pass ollama to chroma_create_collection. The description lists it but the server can't map it

Epsilla Vector Database

  1. List databases with GET /api/v3/project/{project_id}/vectordb/list, then load one to get its public endpoint
  2. Hybrid search is assembled client-side with as_search_engine().add_retriever(...).set_reranker(type="rrf")
  3. If you use pyepsilla against the cloud, patch or wrap it to verify TLS
  4. Ask a person to create the database in the console first. The API can't

Other comparisons with Chroma API + MCP or Epsilla Vector Database

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