Hotjar
Hotjar's update feed stops in April 2025 — the arc it captures ended mid-sentence.
Comparison · Infra & APIs
Merge vs Spacelift
A side-by-side editorial comparison of Merge and Spacelift — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:mcp
Merge vs Spacelift: at a glance
| Feature | Merge | Spacelift |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 6.3 | 0.0 |
| Sparks · 30d | 1 | 0 |
| Top themes | unified-api, agent-infrastructure, mcp, llm-routing | iac, agentic-deploys, mcp, policy-governance |
| Last editorial update | 1h ago | 6d ago |
| Website | — | Visit → |
What is Merge?
Merge is becoming the governance layer for agent tool access, not just a unified data API.
Merge ships a weekly digest split across three lines: the original unified API (HRIS, ATS, CRM, accounting, file storage, ticketing), Agent Handler for AI agent connectors, and Gateway for LLM routing. The unified-API half reads as a maintenance grind — every week is dominated by SharePoint, SAP SuccessFactors, Workday and Dayforce sync reliability, pagination and mapping fixes. All of July's directional news came from the other two lines, ending with hundreds of generic MCP connectors folded into the Agent Handler catalog and an AI Guardrails surface with PII detection.
What is Spacelift?
Spacelift's AI stopped explaining infrastructure and started deploying it.
The dated window ends in March with Spacelift Intelligence, first-class Terragrunt support, OIDC subject claim customisation and a self-service Templates release. Everything since sits in undated rows and is the more consequential half: a remote MCP server in May, SCIM 2.0 provisioning in June, and in July the ability to ask Intelligence to deploy a module by name, resolved against the Module Registry. An August notice warns that the API will start returning HTTP 500 on internal errors instead of 200.
Merge vs Spacelift: editorial side-by-side
Merge
6.3INFRA · APIS
Merge is becoming the governance layer for agent tool access, not just a unified data API.
◆ Current state
Merge ships a weekly digest split across three lines: the original unified API (HRIS, ATS, CRM, accounting, file storage, ticketing), Agent Handler for AI agent connectors, and Gateway for LLM routing. The unified-API half reads as a maintenance grind — every week is dominated by SharePoint, SAP SuccessFactors, Workday and Dayforce sync reliability, pagination and mapping fixes. All of July's directional news came from the other two lines, ending with hundreds of generic MCP connectors folded into the Agent Handler catalog and an AI Guardrails surface with PII detection.
◆ Where it's heading
The unified API is being maintained, not expanded — new objects arrive at a trickle (expense reports in early July) while the bulk of each week goes to sync stability across existing connectors. Attention has moved to sitting between agents and the tools they call: Merge now offers auth, access control, governance and guardrails over connectors it did not build. Gateway is moving the same way, from a routing product to multi-tenant infrastructure customers resell, via Embedded Routing Stack, bring-your-own keys and per-customer complexity classifiers.
◆ Prediction
Expect the guardrails surface to deepen — PII detection and pre-run/post-run rule labels shipped in the same month, and the generic MCP connectors currently arrive without the tool safety hints Merge applied to its own catalog. The likely next step is extending that governance tooling to the imported MCP servers.
Spacelift
0.0INFRA · APIS
Spacelift's AI stopped explaining infrastructure and started deploying it.
◆ Current state
The dated window ends in March with Spacelift Intelligence, first-class Terragrunt support, OIDC subject claim customisation and a self-service Templates release. Everything since sits in undated rows and is the more consequential half: a remote MCP server in May, SCIM 2.0 provisioning in June, and in July the ability to ask Intelligence to deploy a module by name, resolved against the Module Registry. An August notice warns that the API will start returning HTTP 500 on internal errors instead of 200.
◆ Where it's heading
The arc is easy to trace: Intent opened to everyone in December, Intelligence launched in March, an MCP server exposed the platform to outside assistants in May, and by July the AI is performing deployments rather than describing them. Running underneath is the governance work that makes that defensible — module sharing permissions, OIDC claims, SCIM — because an agent that can deploy is only sellable if the registry and the identity provider bound what it can reach. Terragrunt support and the plan-policy cleanup show the core IaC engine still being maintained rather than neglected for the AI work.
◆ Prediction
Deployment by name is the narrow case; the obvious next step is Intent handling multi-stack changes with policy checks in the loop, and the permission model being extended to describe what the AI specifically is allowed to deploy rather than what a user is.
Alternatives to Merge and Spacelift
Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Merge or Spacelift.
Tailscale
Tailscale is turning the tailnet into something you provision by API, not configure by hand.
Daytona
Ten releases in a month, all pointed at making agent sandboxes safe to run in production.
Dashy
After the 4.5.0 drag-and-drop release, Dashy has settled into translations and dependency patches
Jackett
Jackett ships daily, and every release is tracker definitions chasing sites that moved
Quay
Quay ships nothing but CVE remediation, mirrored across two supported branches
See all Merge alternatives → · See all Spacelift alternatives →
Recent activity from Merge and Spacelift
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6d agoSpaceliftAPI will return HTTP 500 on internal errors instead of 200
- 12d agoMergeHundreds of generic MCP connectors land in Agent Handler ⚡
- 19d agoMergeLink setup flow becomes configurable per integration
- 26d agoMergeEmbedded Routing Stack gives Gateway per-customer model controls
- 1mo agoMergeGPT-5.6, Grok 4.5 join Gateway; new Professional Plan pricing
- 1mo agoSpaceliftAsk Spacelift Intelligence to deploy a module by name ⚡
- 1mo agoMergeiTrent and OmniHR connectors; Slackbot gets its own agent identity
- 1mo agoMergeExpense reports endpoint, iTrent and OmniHR join HRIS
- 2mo agoSpaceliftSCIM provisioning available in Spacelift!
- 2mo agoSpaceliftLearning Certificates now available in Spacelift!
- 2mo agoSpaceliftAnnouncing the Spacelift Remote MCP Server!
- 4mo agoSpaceliftLaunchpad Learn: Structured hands-on training for Spacelift
Frequently asked questions
What is the difference between Merge and Spacelift?
Both compete on the same themes — mcp — within Infra & APIs. Merge is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Merge better than Spacelift?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Merge is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to Merge?
Top Merge alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Merge alternatives" section above for the current picks, or visit /alternatives/merge-dev for the full list with editorial commentary on each.
What are the best alternatives to Spacelift?
Top Spacelift alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Spacelift alternatives" section above for the current picks, or visit /alternatives/spacelift for the full list with editorial commentary on each.