The API workspace for modern teams.
Capture · API Development · Automation · Testing · Performance · Observability — one SaaS workspace across the whole API lifecycle.
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{ "name": "Production Env", "region": "{{region}}", "plan": "team", "features": ["beta_analytics", "sso"] }
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Nine product surfaces — capabilities, AI Assistant, workspace context, and org identity — so you stop stitching tools together.
Spanline is SaaS — use spanline-cli to run Performance from CI or your laptop. It connects to Spanline by default. No self-hosted server.
Designed to eliminate friction and context switching from your daily development routine.
Catch inbound traffic live. Inspect headers, bodies, and instantly replay requests.
Compose and send across HTTP, GraphQL, gRPC, SOAP, WebSocket, and SSE.
Wire Capture events into flows with conditions, HTTP actions, and notifications.
Case library with asserts, CI gates, and sync to Jira, GitHub, or Redmine.
Run k6 from the CLI, upload evidence, and compare runs in the workspace.
One timeline across Capture, Testing, and Performance for the whole team.
From Capture debugging to Performance at scale, Spanline adapts to your role in the API lifecycle.
Inspect inbound payloads from Stripe, GitHub, and other providers. Verify signatures, headers, and replay failed events during development.
Chain HTTP calls, extract tokens into later steps, and assert contracts — then graduate the same flows into Performance scenarios.
Organizations, workspaces, SSO (Google / GitHub / Lark), MFA, and plan quotas — security stops at the org boundary.
One workspace for the whole API lifecycle — Capture through Observability. Start free, scale when the team grows.
Try the full workspace — enough for solo exploration.
Shared workspaces for squads shipping together.
Identity, scale, and support for larger orgs.
Same product surface on every plan — quotas scale with the team.
Start on the Free plan — no credit card required.
Spanline processes account, organization, and workspace data you submit to provide the service. We do not sell personal data. Questions: [email protected].
Spanline is a proprietary SaaS product. Use of the Free, Team, and Enterprise plans is subject to acceptable use and the quotas shown above. The service is provided as-is during beta. Contact [email protected] for commercial agreements.