Traces
Spline-blue edges in the debugger match the canvas. Click a node to read the prompt, tool args, and output.
Platform
Splinel is the visual path from a sketch on Tuesday to a versioned URL on Thursday. Builder, deploy lock, and traces live in the same graph.
Builder
Drop blocks for models, tools, and memory. Describe a flow in language and review the graph Splinel proposes. Edit by hand. Test with real payloads before you lock a version.
Work in the canvas, in a conversation, or in code. Node names stay in IBM Plex Mono so the drawing matches the run log.
A versioned path with a URL and a key. Chat, API, webhook, or schedule. The gold tick on a card means that version is the one production calls.
https://run.splinel.xyz/v1/paths/pth_support_triage_v3/run
Deploy
Promote a canvas draft to a locked path. Customers talk to it in chat. Services call it with JSON. Calendars fire it on a cron. Inbound webhooks keep the same node graph.
Rollback is a version switch. Secrets stay in the vault. The graph you drew is the graph that runs.
Monitor
Every run writes a waterfall: node, duration, tokens, dollars. Failed runs replay from the last good node with the original payload. Cost chips use the same numbers that land on the Path invoice.
Spline-blue edges in the debugger match the canvas. Click a node to read the prompt, tool args, and output.
Structured JSON per step. Export on Hub. Retain 14 days on Path, 90 days on Hub.
Provider pass-through at cost. Splinel-hosted compute adds 8% on Path overage. Bring your own keys and that line stays off.
Integrations
Grouped by LLM, CRM, mail, vector, and internal HTTP. The count is this list, refreshed when we ship a connector.
Open source
Clone github.com/splinel/splinel. Run npx splinel for a local canvas. Cloud is how we host runs, traces, and support.
LICENSE is Apache License 2.0 for the canvas, node SDK, and self-host compose file. The hosted control plane, SSO, and VPC lock remain Splinel Cloud.
Keep graphs inside the perimeter. Point the canvas at Ollama on your GPU box. Secrets never leave the vault you mount.
Use cases
Classify, look up CRM, draft, lock for review, send. Deploy as API. Graph on this page.
Enrich a HubSpot deal, write a brief, ping Slack. Deploy as webhook from the CRM.
Read files into semantic memory, answer with citations. Deploy as chat.
Postgres plus Linear plus Notion. Deploy as chat behind SSO on Hub.
Monday 08:00 IST cron. Query warehouse, draft, mail the PDF. Deploy as schedule.