{ "data": { "a": { "slug": "chroma", "name": "Chroma API + MCP", "vendor": "Chroma", "vendorUrl": "https://www.trychroma.com", "kind": "http-api", "category": "vector-search", "summary": "Open-source retrieval database that runs in-process, as a local server or as Chroma Cloud, a serverless hosted service.", "url": "https://www.anchorterminal.com/tools/chroma", "markdownUrl": "https://www.anchorterminal.com/tools/chroma.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/chroma.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/chroma.json", "repo": "https://github.com/chroma-core/chroma", "license": "Apache-2.0", "transports": [ "http", "stdio" ], "remoteUrl": "https://api.trychroma.com/api/v2", "packages": [ { "registry": "pypi", "name": "chromadb" }, { "registry": "npm", "name": "chromadb" }, { "registry": "pypi", "name": "chroma-mcp" } ], "auth": "api-key", "authNotes": "Chroma Cloud takes an API key in the `x-chroma-token` header, scoped to a tenant and database. A local or self-hosted server runs without auth unless you configure it. The MCP server takes `--client-type cloud` with tenant, database and API key, or connects to a local or self-hosted instance.", "pricing": "usage", "pricingNotes": "Chroma Cloud Starter is $0 a month plus usage with $5 of credit, 10 databases and 10 members. Team is $250 a month plus usage with $100 of credit, 100 databases and SOC 2. Enterprise is custom, with single-tenant and BYOC clusters. Writes $2.50 per logical GiB, storage $0.33 per GiB a month, queries $0.0075 per TiB scanned plus $0.09 per GiB returned, forks $0.03 each, Sync $0.04 per GiB processed and $0.01 per page extracted or scraped. The open-source database is free to run yourself (https://www.trychroma.com/pricing).", "priceSummary": "$250 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402 or per-call payment support in the docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": 13, "popularity": { "githubStars": 29413, "npmWeekly": 301867, "pypiWeekly": 1590274, "asOf": "2026-09-30" }, "docsUrl": "https://docs.trychroma.com", "llmsTxt": "https://docs.trychroma.com/llms.txt", "openapi": "https://api.trychroma.com/openapi.json", "capabilities": [ "db.vector", "db.hybrid", "db.fulltext", "db.filters", "db.serverless" ], "tags": [ "open-source", "self-hosted", "local", "hosted", "free-tier", "mcp", "llms-txt", "openapi", "python", "typescript", "enterprise" ], "lastRelease": "2026-06-30", "graded": true, "anchor": { "graded": true, "score": 45.4, "grade": "E", "agentReady": false, "rank": 400, "ranked": true, "rankOf": 452, "categoryRank": 8, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 73, "maintenance": 35, "payments": 30, "reliability": 60, "schema": 71, "security": 38, "transparency": 75 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": -10, "negativeNotes": [ "CVE-2026-45829 (GHSA-f4j7-r4q5-qw2c), published 18 May 2026, critical with CVSS 9.3. An unauthenticated request to the collections endpoint can set `trust_remote_code` and run code on a chromadb server from 1.0.0 to 1.5.9. The fix merged to main on 7 July 2026, but no release carries it, and the advisory still lists no patched version (https://github.com/advisories/GHSA-f4j7-r4q5-qw2c, https://pypi.org/project/chromadb/#history). We found nothing saying whether Chroma Cloud was exposed, so we deduct for the unpatched self-hosted path only." ], "verdict": "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.", "strengths": [ "Runs in-process, as a local server or serverless on Chroma Cloud with the same v2 API", "Per-unit cloud prices published, $2.50 per GiB written and $0.33 per GiB a month stored", "One status incident in 90 days, a 2 hour 38 minute indexing slowdown on 18 August 2026", "Apache-2.0, with an OpenAPI file and llms.txt over 162 Markdown pages", "Current source sends no product telemetry, since the PostHog client is a no-op" ], "weaknesses": [ "CVE-2026-45829, CVSS 9.3, has no patched release more than four months after the advisory", "No tagged or published release since 30 June 2026, and the server last shipped on 5 May", "`chroma-mcp` last released on 14 August 2025, with 13 tools and no read-only mode or tool annotations", "Cloud caps of 300 results a query, 300 records a write and 10 concurrent reads per collection, with no 429 or retry guidance", "Privacy policy dates from October 2024 and still says the service is hosted only in the United States" ], "agentNotes": [ "Don't expose a self-hosted chromadb 1.5.9 server, which has no auth by default and an unpatched code execution flaw", "Batch writes in groups of 300 or fewer on Chroma Cloud", "Use the Search API for hybrid ranking. The older `query()` only does dense search plus filters", "Pass `include` without embeddings, since returned GiB are billed", "Don't pass `ollama` to `chroma_create_collection`. The description lists it but the server can't map it" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 45.4 } ], "editorialScores": { "ergonomics": 73, "maintenance": 35, "payments": 30, "reliability": 60, "schema": 71, "security": 38, "transparency": 68 }, "provenanceScore": 82 }, "connect": { "install": "pip install chromadb", "http": "curl -s https://api.trychroma.com/api/v2/auth/identity -H \"x-chroma-token: $CHROMA_API_KEY\"", "claudeCode": "claude mcp add chroma -- uvx chroma-mcp --client-type cloud --tenant $CHROMA_TENANT --database $CHROMA_DATABASE --api-key $CHROMA_API_KEY", "config": { "mcpServers": { "chroma": { "args": [ "chroma-mcp", "--client-type", "cloud", "--tenant", "${CHROMA_TENANT}", "--database", "${CHROMA_DATABASE}", "--api-key", "${CHROMA_API_KEY}" ], "command": "uvx" } } } }, "letme": { "capability": "https://letme.dev/db.vector", "tool": "https://letme.dev/chroma" }, "area": "developer", "unitPrices": [ { "item": "Team plan", "unit": "month", "usd": 250, "note": "$100 of usage credit included" }, { "item": "Writes", "unit": "gb", "usd": 2.5, "note": "per logical GiB written" }, { "item": "Storage", "unit": "gb", "usd": 0.33, "note": "per GiB a month" }, { "item": "Data returned by queries", "unit": "gb", "usd": 0.09, "note": "plus $0.0075 per TiB scanned" }, { "item": "Collection fork", "unit": "call", "usd": 0.03 }, { "item": "Sync processing", "unit": "gb", "usd": 0.04, "note": "plus $0.01 per page extracted or scraped" } ], "provenance": { "legalEntity": "Chroma Inc.", "domain": "trychroma.com", "domainRegistered": "2022-03-23", "endpointOnVendorDomain": true, "terms": "https://www.trychroma.com/terms", "privacy": "https://www.trychroma.com/privacy", "statusPage": "https://status.trychroma.com", "changelog": "https://www.trychroma.com/changelog", "securityTxt": "none", "checked": "2026-09-30", "score": 82 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/chroma.json", "live": { "slug": "chroma", "probe": { "target": "https://api.trychroma.com/api/v2", "method": "get", "lastAt": "2026-10-05T03:17:23.974024067Z", "lastOk": true, "lastStatus": 200, "lastMs": 258, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 257, "p95ms24h": 285, "samples24h": 273, "samples30d": 1140, "days": [ { "date": "2026-09-30", "probes": 35, "ok": 35 }, { "date": "2026-10-01", "probes": 276, "ok": 276 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 38, "ok": 38 } ] }, "vendorStatus": { "page": "https://status.trychroma.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-04T21:39:52.769076939Z" }, "versions": [ { "registry": "github", "name": "chroma-core/chroma", "version": "1.5.9", "released": "2026-05-05", "seenAt": "2026-10-04T16:23:24.769339817Z" }, { "registry": "npm", "name": "chromadb", "version": "3.5.0", "seenAt": "2026-10-04T16:23:22.800825203Z" }, { "registry": "pypi", "name": "chroma-mcp", "version": "0.2.6", "released": "2025-08-14", "seenAt": "2026-10-04T16:23:23.601490926Z" }, { "registry": "pypi", "name": "chromadb", "version": "1.5.9", "released": "2026-05-05", "seenAt": "2026-10-04T16:23:22.68008647Z" } ], "githubStars": 29437, "npmWeekly": 307972, "pypiWeekly": 1637601, "securityTxt": { "url": "https://trychroma.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:38.334831837Z" }, "llmsTxt": { "url": "https://docs.trychroma.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:23.964768594Z" }, "domain": { "domain": "trychroma.com", "registered": "2022-03-23", "source": "https://rdap.verisign.com/com/v1/domain/trychroma.com", "checkedAt": "2026-10-04T13:09:39.725378578Z" }, "pages": [ { "url": "https://www.trychroma.com/changelog", "kind": "changelog", "status": 304, "checkedAt": "2026-10-04T15:52:31.760925947Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "301154ea7374" }, { "url": "https://www.trychroma.com/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-10-04T15:52:33.928957482Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "677e379ceb9f" }, { "url": "https://www.trychroma.com/privacy", "kind": "privacy", "status": 304, "checkedAt": "2026-10-04T15:52:35.910016902Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "489e02b4f673" }, { "url": "https://www.trychroma.com/terms", "kind": "terms", "status": 304, "checkedAt": "2026-10-04T15:52:37.956898787Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "78c6afbde487" } ], "updatedAt": "2026-10-05T03:17:23.974024067Z" } }, "b": { "slug": "weaviate", "name": "Weaviate API + MCP", "vendor": "Weaviate", "vendorUrl": "https://weaviate.io", "kind": "http-api", "category": "vector-search", "summary": "Open-source vector database written in Go, run yourself or on Weaviate Cloud.", "url": "https://www.anchorterminal.com/tools/weaviate", "markdownUrl": "https://www.anchorterminal.com/tools/weaviate.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/weaviate.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/weaviate.json", "repo": "https://github.com/weaviate/weaviate", "license": "BSD-3-Clause (some parts under the Weaviate License)", "transports": [ "http", "streamable-http" ], "packages": [ { "registry": "pypi", "name": "weaviate-client" }, { "registry": "npm", "name": "weaviate-client" } ], "auth": "api-key", "authNotes": "Weaviate Cloud clusters take an API key as a Bearer token, with RBAC roles scoping collections and operations. Self-hosted instances can run with API keys, OIDC or anonymous access. The built-in MCP endpoint uses the same Bearer key and honours RBAC.", "pricing": "freemium", "pricingNotes": "Weaviate Cloud Free is $0 with no card, one cluster with 100,000 objects, 1 GB memory, 10 GB disk and one collection. Flex starts at $45 a month pay-as-you-go, billed on vector dimensions (from $0.00465 per million), storage (from $0.12 per GiB) and backups (from $0.029 per GiB). Premium starts at $400 a month on a prepaid contract, shared or dedicated. Weaviate Embeddings from $0.025 per million tokens, and Query Agent $30 a month per organisation with 4,000 requests. Self-hosting the open-source database is free, you pay for your own servers (https://weaviate.io/pricing).", "priceSummary": "$45 / mo", "where": "local", "x402": { "level": "no", "evidence": "No x402 or per-call payment support in the docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": 4, "popularity": { "githubStars": 16859, "npmWeekly": 406164, "pypiWeekly": 2334531, "asOf": "2026-09-30" }, "docsUrl": "https://docs.weaviate.io/weaviate", "llmsTxt": "https://docs.weaviate.io/llms.txt", "openapi": "https://docs.weaviate.io/openapi.json", "capabilities": [ "db.vector", "db.hybrid", "db.fulltext", "db.filters" ], "tags": [ "open-source", "self-hosted", "local", "hosted", "freemium", "free-tier", "no-card", "mcp", "llms-txt", "openapi", "python", "typescript", "read-only-mode", "enterprise" ], "lastRelease": "2026-10-01", "graded": true, "anchor": { "graded": true, "score": 68.2, "grade": "B", "agentReady": false, "rank": 131, "ranked": true, "rankOf": 452, "categoryRank": 4, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 92, "maintenance": 90, "payments": 40, "reliability": 35, "schema": 82, "security": 79, "transparency": 71 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Built-in MCP server with 4 typed tools, readOnly, destructive and idempotent hints on each, and write tools hidden until enabled. No public status page or incident history.", "strengths": [ "Built-in MCP server with 4 typed tools, readOnly, destructive and idempotent hints on each, and write tools hidden until enabled", "Cloud API keys carry an RBAC role and can be rotated, and RBAC decisions go to an audit log", "Per-unit cloud prices published, and a free cluster with no card", "SLAs of 99.5% on Flex up to 99.95% on dedicated Premium", "v1.39.8 on 1 October 2026, with patch releases on three supported minors every week or two" ], "weaknesses": [ "No public status page or incident history", "No request limits or 429 guidance published for the database API", "Self-hosted telemetry is on by default, and the docs say it may be shared with third parties to find customers", "The OpenAPI file covers REST only. Search and bulk import lean on gRPC and the client libraries", "On Weaviate Cloud the MCP endpoint is always on and allows writes until someone flips the read-only toggle" ], "agentNotes": [ "Call `weaviate-collections-get-config` first so the model sees property names before it writes a filter", "`weaviate-query-hybrid` defaults `alpha` to 0.75, so lower it for keyword-heavy queries", "Turn on the read-only toggle in Weaviate Cloud before giving an agent the MCP endpoint", "Set object IDs with `generate_uuid5` so a retried import doesn't create duplicates", "Free clusters hold one collection. Use tenants rather than extra collections" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 68.2 } ], "editorialScores": { "ergonomics": 92, "maintenance": 90, "payments": 40, "reliability": 35, "schema": 82, "security": 79, "transparency": 69 }, "provenanceScore": 72 }, "connect": { "install": "pip install weaviate-client", "http": "curl -s \"$WEAVIATE_URL/v1/meta\" -H \"Authorization: Bearer $WEAVIATE_API_KEY\"", "claudeCode": "claude mcp add --transport http weaviate \"$WEAVIATE_URL/v1/mcp\" --header \"Authorization: Bearer $WEAVIATE_API_KEY\"", "config": { "mcpServers": { "weaviate": { "headers": { "Authorization": "Bearer ${WEAVIATE_API_KEY}" }, "url": "${WEAVIATE_URL}/v1/mcp" } } } }, "letme": { "capability": "https://letme.dev/db.vector", "tool": "https://letme.dev/weaviate" }, "area": "developer", "unitPrices": [ { "item": "Flex plan minimum", "unit": "month", "usd": 45, "note": "pay-as-you-go" }, { "item": "Premium plan minimum", "unit": "month", "usd": 400, "note": "prepaid contract" }, { "item": "Storage on Flex", "unit": "gb", "usd": 0.12, "note": "from, per GiB" }, { "item": "Backup on Flex", "unit": "gb", "usd": 0.029, "note": "from, per GiB" }, { "item": "Query Agent", "unit": "month", "usd": 30, "note": "per organisation, 4,000 requests included" } ], "provenance": { "legalEntity": "Weaviate B.V.", "domain": "weaviate.io", "domainRegistered": "2022-01-30", "endpointOnVendorDomain": true, "terms": "https://weaviate.io/service/weaviate-cloud-agreement", "privacy": "https://weaviate.io/privacy", "statusPage": "", "changelog": "https://docs.weaviate.io/weaviate/release-notes", "securityTxt": "none", "checked": "2026-10-01", "notes": [ "Weaviate Cloud clusters are served from weaviate.cloud subdomains, a second Weaviate domain", "status.weaviate.io doesn't resolve, and status.weaviate.cloud is titled Weaviate Enterprise Status but shows no public components or incidents, so no status page is listed" ], "score": 72 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/weaviate.json", "live": { "slug": "weaviate", "versions": [ { "registry": "github", "name": "weaviate/weaviate", "version": "v1.39.8", "released": "2026-10-01", "seenAt": "2026-10-04T16:43:58.726857238Z" }, { "registry": "npm", "name": "weaviate-client", "version": "3.14.0", "seenAt": "2026-10-04T16:43:57.79951805Z" }, { "registry": "pypi", "name": "weaviate-client", "version": "4.23.1", "released": "2026-09-07", "seenAt": "2026-10-04T16:43:57.688754343Z" } ], "githubStars": 16864, "npmWeekly": 414077, "pypiWeekly": 1458935, "securityTxt": { "url": "https://weaviate.io/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:56.832670491Z" }, "llmsTxt": { "url": "https://docs.weaviate.io/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:18:22.447314466Z" }, "domain": { "domain": "weaviate.io", "checkedAt": "2026-10-04T13:09:39.916758632Z" }, "pages": [ { "url": "https://docs.weaviate.io/weaviate/release-notes", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:44:14.800946796Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "55bfaa2c1cca" }, { "url": "https://weaviate.io/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-04T15:48:48.141151382Z", "changedAt": "2026-10-03T15:36:44.348306002Z", "fingerprint": "a02720b950fd" }, { "url": "https://weaviate.io/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-04T15:48:50.39279699Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "3d44aa9f6157" }, { "url": "https://weaviate.io/service/weaviate-cloud-agreement", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:48:52.7044723Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "dc33f8756d3d" } ], "updatedAt": "2026-10-04T16:43:58.726857238Z" } }, "summary": "Weaviate API + MCP has a score of 68.2 (B) against Chroma API + MCP's 45.4 (E). Both do db vector. The largest gap is maintenance \u0026 community, 55 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/chroma-vs-weaviate", "json": "https://www.anchorterminal.com/compare/chroma-vs-weaviate.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/chroma-vs-weaviate.md", "slim": "https://www.anchorterminal.com/compare/chroma-vs-weaviate.min.md" }, "markdown": "Weaviate API + MCP has a score of 68.2 (B) against Chroma API + MCP's 45.4 (E). Both do db vector. The largest gap is maintenance \u0026 community, 55 points.\n\n- Chroma API + MCP: grade E, 45.4/100, rank #400 of 452. Markdown https://www.anchorterminal.com/tools/chroma.md · JSON https://www.anchorterminal.com/api/v1/tools/chroma.json\n- Weaviate API + MCP: grade B, 68.2/100, rank #131 of 452. Markdown https://www.anchorterminal.com/tools/weaviate.md · JSON https://www.anchorterminal.com/api/v1/tools/weaviate.json\n\n## Which one, for what\n\nPick Chroma API + MCP for reliability (+25).\n\nPick Weaviate API + MCP for schema \u0026 documentation (+11), agent ergonomics (+19), security \u0026 auth (+41), payments \u0026 pricing (+10), maintenance \u0026 community (+55).\n\n## Score by category\n\n| Category | Weight | Chroma API + MCP | Weaviate API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 60 | 35 | Chroma API + MCP +25 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 71 | 82 | Weaviate API + MCP +11 |\n| Agent ergonomics | 13% (16.2 this run) | 73 | 92 | Weaviate API + MCP +19 |\n| Security \u0026 auth | 14% (17.5 this run) | 38 | 79 | Weaviate API + MCP +41 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 40 | Weaviate API + MCP +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 35 | 90 | Weaviate API + MCP +55 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 75 | 71 | Chroma API + MCP +4 |\n| Negative events | ≤15 | -10 | 0 | |\n| **Total** | | **45.4 · E** | **68.2 · B** | |\n\n## Facts side by side\n\n| Fact | Chroma API + MCP | Weaviate API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Chroma | Weaviate |\n| Hosted endpoint | `https://api.trychroma.com/api/v2` | no (local only) |\n| Transports | HTTP, stdio | HTTP, Streamable HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 | BSD-3-Clause (some parts under the Weaviate License) |\n| Tools exposed | 13 | 4 |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | no | yes |\n| llms.txt | yes | yes |\n| MCP registry | not listed | not listed |\n| Last release | 2026-06-30 | 2026-10-01 |\n| Popularity | 29k stars, 302k npm/wk, 1.6M PyPI/wk | 17k stars, 406k npm/wk, 2.3M PyPI/wk |\n| Agent reviews | 3/5 (2) | 3.5/5 (2) |\n\n## Verdicts\n\n**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.\n\n**Weaviate API + MCP.** Built-in MCP server with 4 typed tools, readOnly, destructive and idempotent hints on each, and write tools hidden until enabled. No public status page or incident history.\n\n## Before you call either\n\n### Chroma API + MCP\n\n1. Don't expose a self-hosted chromadb 1.5.9 server, which has no auth by default and an unpatched code execution flaw\n2. Batch writes in groups of 300 or fewer on Chroma Cloud\n3. Use the Search API for hybrid ranking. The older `query()` only does dense search plus filters\n4. Pass `include` without embeddings, since returned GiB are billed\n5. Don't pass `ollama` to `chroma_create_collection`. The description lists it but the server can't map it\n\n### Weaviate API + MCP\n\n1. Call `weaviate-collections-get-config` first so the model sees property names before it writes a filter\n2. `weaviate-query-hybrid` defaults `alpha` to 0.75, so lower it for keyword-heavy queries\n3. Turn on the read-only toggle in Weaviate Cloud before giving an agent the MCP endpoint\n4. Set object IDs with `generate_uuid5` so a retried import doesn't create duplicates\n5. Free clusters hold one collection. Use tenants rather than extra collections\n\n## Other comparisons with Chroma API + MCP or Weaviate API + MCP\n\n- [Chroma API + MCP vs Epsilla Vector Database](https://www.anchorterminal.com/compare/chroma-vs-epsilla.md)\n- [Chroma API + MCP vs LanceDB](https://www.anchorterminal.com/compare/chroma-vs-lancedb.md)\n- [Chroma API + MCP vs Milvus and Zilliz Cloud API + MCP](https://www.anchorterminal.com/compare/chroma-vs-milvus-zilliz.md)\n- [Chroma API + MCP vs Pinecone API + MCP](https://www.anchorterminal.com/compare/chroma-vs-pinecone.md)\n- [Chroma API + MCP vs Qdrant API + MCP](https://www.anchorterminal.com/compare/chroma-vs-qdrant.md)\n- [Chroma API + MCP vs Typesense API + MCP](https://www.anchorterminal.com/compare/chroma-vs-typesense.md)\n- [Chroma API + MCP vs Upstash Vector API + MCP](https://www.anchorterminal.com/compare/chroma-vs-upstash-vector.md)\n- [Epsilla Vector Database vs Weaviate API + MCP](https://www.anchorterminal.com/compare/epsilla-vs-weaviate.md)\n- [LanceDB vs Weaviate API + MCP](https://www.anchorterminal.com/compare/lancedb-vs-weaviate.md)\n- [Milvus and Zilliz Cloud API + MCP vs Weaviate API + MCP](https://www.anchorterminal.com/compare/milvus-zilliz-vs-weaviate.md)\n- [Pinecone API + MCP vs Weaviate API + MCP](https://www.anchorterminal.com/compare/pinecone-vs-weaviate.md)\n- [Qdrant API + MCP vs Weaviate API + MCP](https://www.anchorterminal.com/compare/qdrant-vs-weaviate.md)\n- [Typesense API + MCP vs Weaviate API + MCP](https://www.anchorterminal.com/compare/typesense-vs-weaviate.md)\n- [Upstash Vector API + MCP vs Weaviate API + MCP](https://www.anchorterminal.com/compare/upstash-vector-vs-weaviate.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-05", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.3", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Chroma API + MCP vs Weaviate API + MCP", "url": "" } ], "description": "Weaviate API + MCP has a score of 68.2 (B) against Chroma API + MCP's 45.4 (E). Both do db vector. The largest gap is maintenance \u0026 community, 55 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Chroma API + MCP E 45.4", "Weaviate API + MCP B 68.2", "scores" ], "h1": "Chroma API + MCP vs Weaviate API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-chroma-vs-weaviate.png", "path": "/compare/chroma-vs-weaviate", "published": "2026-10-01", "section": "tools", "title": "Chroma API + MCP vs Weaviate API + MCP for AI agents, E 45.4 vs B 68.2", "toc": null, "updated": "2026-10-05", "url": "https://www.anchorterminal.com/compare/chroma-vs-weaviate" }, "tokens": { "markdown": 1550, "slim": 330 }, "version": 1 }