OmniRoute/@omniroute/opencode-plugin-v2

@omniroute/opencode-plugin-v2

OpenCode v2 plugin (define({ id, setup }), Promise API) that publishes the live OmniRoute catalog — models from /v1/models, combos from /api/combos (least-common-denominator join), auto-combos from /api/combos/auto, enrichment (names + pricing), and usable-provider filtering — into the v2 catalog.transform, with key + env auth via integration.transform.

Companion to @omniroute/opencode-plugin (OpenCode v1, same repo). The two packages are independent: this one carries its own catalog-mapping logic and the v1 plugin is left untouched.

Install

npm install @omniroute/opencode-plugin-v2

opencode.json:

{
  "plugins": [
    {
      "package": "@omniroute/opencode-plugin-v2",
      "options": {
        "providerId": "omniroute",
        "baseURL": "http://localhost:20128"
      }
    }
  ]
}

Credentials

The plugin needs a gateway key to read the catalog, and looks for one in this order:

1. The credential you connected in OpenCode. The plugin registers an integration, so opencode auth (or the Connect action in the model picker) can store a key for it. Nothing is written to opencode.json — this is the recommended route.
2. apiKey in the plugin options, when you want a per-project override. Remember that this puts the key in a config file you may be committing.
3. OMNIROUTE_API_KEY in the environment.

If none of the three yields a key, the catalog is empty and the plugin says so once at startup rather than leaving you with a silent empty model list.

The management token is a different key

Combos, provider health and enrichment (display names, pricing, free-tier budgets) come from the gateway's /api/* endpoints, which most deployments gate behind a management token rather than the inference key. Set it explicitly:

"options": {
  "baseURL": "http://localhost:20128",
  "managementReadToken": "<management read token>"
}

Left unset, managementReadToken falls back to apiKey for backwards compatibility. When a gateway rejects that fallback, the catalog still publishes — but with raw model ids instead of display names, no canonical alias dedupe, no pricing and no combos. The plugin warns once per endpoint when this happens, naming the endpoint and the consequence, so the degraded catalog is never a mystery.

Options

Key	Default	Notes
providerId	"omniroute"	Provider id and integration id; models publish under <providerId>/…
baseURL	required	OmniRoute gateway root (no /v1 suffix needed)
apiKey	connected credential, then OMNIROUTE_API_KEY	Chat key for /v1/* — see Credentials
managementReadToken	falls back to apiKey	Management key for /api/* (combos, providers, enrichment) — usually not the same key
displayName	"OmniRoute"	Provider display name
timeoutMs	10000	Per-endpoint fetch timeout (auto-combos use 5s)
modelCacheTtlMs	300000	Catalog cache TTL; disk snapshot warms cold starts
timeouts	per-endpoint override	{ models, combos, autoCombos, enrichment } in ms; falls back to timeoutMs
enrichment	true	Fetch names + pricing (/api/pricing*, /api/free-tier/summary)
providerTag	true	Prefix a display name with the upstream provider it routes to
geminiSanitization	true	Strip $schema/additionalProperties from tool schemas sent to Gemini models ($ref tools are forwarded untouched)
usableOnly	false	Filter to healthy provisioned providers (/api/providers)
visibleModels / hiddenModels	[]	Exact-or-suffix allowlists, deny wins
apiFormat.allowAnthropic	false	Route allowlisted ids to the Anthropic API block
apiFormat.anthropicModels	[]	Full model ids routed to Anthropic
apiFormat.anthropicPrefixes	v1 defaults	Deprecated, warns once — prefer anthropicModels
logLevel / startupDebug	warn / false	Logger verbosity

Tool calling on Gemini models

Gemini answers 400 INVALID_ARGUMENT — for the whole request, not just the offending tool — when a tool declaration carries $schema or additionalProperties. Anything that emits standard JSON Schema therefore breaks tool calling as soon as the chain routes to Gemini.

The plugin strips those keywords from tool schemas bound for a Gemini model of this provider, and leaves every other request untouched. A tool carrying a $ref is forwarded untouched instead of stripped: removing the reference would widen the schema to "accept anything". Set "geminiSanitization": false to turn it off.

Migrating from the v1 plugin

The v2 plugin publishes provider id X bare. The v1 plugin published opencode-X (native-adapter gate). Sessions pinned to opencode-X/... must re-select the model under X/....

License

MIT