Data residency

Constrain where inference runs by tagging the model string.

Model ref syntax

GRAMMAR

[namespace/]name[:tag[,tag]][!]

auto:eu                       router restricted to EU-scoped deployments
sovereign/claude-sonnet-5:se  pinned model, Sweden first
...:eu!                       strict: fail closed, never fall back

Example

curl -i https://api.eggsplain.com/v1/chat/completions \
  -H "Authorization: Bearer $EGGSPLAIN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "sovereign/claude-sonnet-5:eu!",
  "messages": [{ "role": "user", "content": "Say hello." }]
}'

Tags

Parameter	Type	Description
`eu`	`zone tag`	Restrict to EU-scoped deployments.
`se`	`country tag`	Sweden first, then `eu`, then global.
`no`	`country tag`	Norway first, then `eu`, then global.
`!`	`suffix`	Strict mode. If no matching deployment is healthy the request fails closed instead of degrading.
`vision`	`flag tag`	Multimodal capability flag, not a region.

Proof of where it ran

Responses include x-egg-residency-requested and x-egg-residency-served. Served is global when a non-strict request degraded, so you can audit it.

Unknown tags on auto are rejected with HTTP 422; try the Malformed preset.