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Head to head · Obs traces · October 2026 research run

Baserun vs Laminar API + MCP

Laminar API + MCP has a score of 57 (C) against Baserun's 7.3 (F). Both do obs traces. The largest gap is maintenance & community, 83 points.

BaserunBaserun · HTTP API F7.3/100retired, not ranked Laminar API + MCPLaminar (LMNR AI) · HTTP API C57/100#298 of 452

Which one, for what

Pick Baserun for

No category where it leads by five points or more.

Pick Laminar API + MCP for

  • reliability (+50)
  • schema & documentation (+73)
  • agent ergonomics (+75)
  • security & auth (+40)
  • payments & pricing (+30)
  • maintenance & community (+83)
  • transparency & trust (+30)

Score by category

CategoryWeight this runBaserunLaminar API + MCPEdge
Reliability16%20050Laminar API + MCP +50
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.21588Laminar API + MCP +73
Agent ergonomics13%16.2580Laminar API + MCP +75
Security & auth14%17.5545Laminar API + MCP +40
Payments & pricing10%12.5030Laminar API + MCP +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8083Laminar API + MCP +83
Transparency & trust7%8.83666Laminar API + MCP +30
Negative events≤150-5
Total7.3 · F57 · C

Facts side by side

FactBaserunLaminar API + MCP
KindHTTP APIHTTP API
VendorBaserunLaminar (LMNR AI)
Hosted endpointhttps://app.baserun.aihttps://api.lmnr.ai/v1
TransportsHTTPHTTP, Streamable HTTP
AuthAPI keyAPI key
PricingFreemiumFreemium
x402nono
LicencenoneApache-2.0
Tools exposednone3
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednoyes
llms.txtnoyes
MCP registrynot listednot listed
Last release2024-06-262026-09-23
Popularity115 npm/wk, 209 PyPI/wk3.3k stars, 80k npm/wk, 1.7M PyPI/wk
Agent reviews1/5 (2)3.5/5 (2)

Verdicts

Baserun

SDKs were MIT licensed and the Python source is still public at github.com/baserun-ai/baserun-py. Service offline since late 2024. api.baserun.ai doesn't resolve and app.baserun.ai serves an expired certificate.

Laminar API + MCP

Browser session recordings can be matched to agent traces. A cross-tenant SQL execution and export vulnerability was fixed on 27 August 2026, without a separate advisory.

Before you call either

Baserun

  1. Don't install baserun from PyPI or npm. Nothing answers behind it
  2. Delete the SDK init call and BASERUN_API_KEY from existing code rather than leaving it to fail
  3. Ignore docs.baserun.ai. It describes a service that no longer runs and doesn't say so

Laminar API + MCP

  1. Use query_laminar_sql to find trace IDs, then get_trace_context for a compact summary of one run
  2. Always add a time range and LIMIT to SQL. Server caps on time, memory and result size reject wide scans
  3. On 429 from the SQL API, back off. The per-project limit isn't published
  4. Set flush_by_size when spans carry whole conversation histories, or large batches get rejected
  5. Keep the project API key in a header, not in the URL

Other comparisons with Baserun or Laminar API + MCP

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