[Bug] Opencode wont start with this plugin 1.14.46

Using opencode v1.14.46, startup fails

13:14:31 [ajaym] in ~/.config/opencode  oc
Error: 1 of 5 requests failed: config.get: opencode server GET http://opencode.internal/config?directory=%2FUsers%2Fuser%2F.config%2Fopencode → 400: (empty response body)
    at DA (/$bunfs/root/chunk-yds7xgfj.js:469:644)
    at <anonymous> (/$bunfs/root/chunk-yds7xgfj.js:469:6060)
    at processTicksAndRejections (native:7:39)

I receive a similar error, when I try to start opencode TUI:

Error: 1 of 5 requests failed: config.get: Expected "text" | "audio" | "image" | "video" | "pdf", got "embedding"
  at ["provider"]["lmstudio"]["models"]["text-embedding-nomic-embed-text-v1_5"]["modalities"]["output"][0]
    at ej (B:/~BUN/root/chunk-5e1nbvt1.js:469:644)
    at <anonymous> (B:/~BUN/root/chunk-5e1nbvt1.js:469:6060)
    at processTicksAndRejections (native:7:39)

TLDR: claude thinks it's because i have an embedding model hosted on lm studio as well, and when opencode or this plugin do model discovery, the model is exposed with the modality embedding - but opencode only accepts "text" | "audio" | "image" | "video" | "pdf", got "embedding".
it is unclear why this happens now, but the working theory is that while opencode never accepted embedding as a value here, it also didnt enforce it (but does now).

trying to throw out nomic as a quick fix now, but i think it's included with lm-studio per default? the other fast pathway would be to not use this plugin and hardcode the models instead of doing discovery.

Summary

After updating opencode from 1.14.30 to 1.14.46, the plugin causes opencode to fail startup with an HTTP 400 on GET /config because it registers embedding-only models (e.g. text-embedding-nomic-embed-text-v1.5) with modalities.output: ["embedding"], which is not an accepted value in opencode's config schema.

This worked fine on 1.14.30. opencode 1.14.47 notes "HTTP API schema validation errors now return a readable 400 response body" — i.e. the schema was already strict, but is now actively enforced/surfaced. The plugin itself hasn't changed (npm shows 0.3.0 from ~5 months ago); the breakage is triggered by opencode tightening validation.

Error

From ~/.local/share/opencode/log/:

service=default http.method=GET http.url=/config http.status=400 cause=HttpApiSchemaError: Body {
  [cause]: SchemaError: Expected "text" | "audio" | "image" | "video" | "pdf", got "embedding"
    at ["provider"]["lmstudio"]["models"]["text-embedding-nomic-embed-text-v1_5"]["modalities"]["output"][0]
}

The TUI shows:

Error: 1 of 5 requests failed: config.get: opencode server GET http://opencode.internal/config?directory=... → 400: (empty response body)

opencode does not start.

Reproduction

opencode 1.14.46 (also reproduces on 1.14.47)
opencode-lmstudio 0.3.0 enabled as a plugin
LM Studio running on 127.0.0.1:1234 with an embedding model loaded (e.g. nomic-embed-text-v1.5) alongside chat models
Run opencode in any project directory

Minimal config:

{
  "$schema": "https://opencode.ai/config.json",
  "plugin": ["opencode-lmstudio"],
  "provider": {
    "lmstudio": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "LM Studio (local)",
      "options": { "baseURL": "http://127.0.0.1:1234/v1" }
    }
  }
}

Expected behavior

opencode starts. Embedding models exposed by LM Studio should either be filtered out (they're not usable as a chat/coding agent target) or registered without a modalities field — opencode's schema currently only accepts text | audio | image | video | pdf as output modalities.

Suggested fix

In the model categorization / config-merge logic (the same area as #7), detect embedding models from LM Studio's /v1/models response and either:

skip them entirely when populating provider.lmstudio.models, or
emit them without modalities (or with an empty/omitted modalities.output) so the schema validator doesn't reject them.

LM Studio tags embedding models clearly in /v1/models (type: "embeddings" on the newer API, or model name prefix text-embedding-* as a fallback), so the filter is straightforward.

Workaround

Ejecting the embedding model in LM Studio, or downgrading opencode to 1.14.30, both make startup succeed. Neither is desirable long-term — embeddings in LM Studio are useful for other tools, and pinning opencode means missing fixes.

Environment

opencode 1.14.46 (also 1.14.47)
opencode-lmstudio 0.3.0
LM Studio (latest), serving on 127.0.0.1:1234
macOS, bun runtime (as bundled with opencode)

Happy to test a patch.

Can't we just change it here?

opencode-lmstudio/src/types/index.ts

Line 14 in c0d3288

export type ModelType = 'chat' | 'embedding' | 'unknown'

Is there a fix for this? In my case the embedding model isn't even. loaded... but still shows in the list. Seemingly another bug: lmstudio-ai/lmstudio-bug-tracker#763

Is there a fix for this? In my case the embedding model isn't even. loaded... but still shows in the list. Seemingly another bug: lmstudio-ai/lmstudio-bug-tracker#763

This projects seems kinda abandoned. No reply on issues or PRs from the maintainers. I wrote my own plugin instead. See if it works for you.

https://github.com/rashomon-gh/opencode-lmstudio-sync

I ran into the exact same issue while using this plugin. Then I realized that OpenCode already has native support for LM Studio local models, so it looks like this plugin is no longer needed and can just be uninstalled.

I ran into the exact same issue while using this plugin. Then I realized that OpenCode already has native support for LM Studio local models, so it looks like this plugin is no longer needed and can just be uninstalled.

You sure ? I did not succeed...
I made a fork of this project to fix it and to work with an API key. This fork also supports "on the fly" modell list.

The built in support doesn't seem to automatically query lm studio.. so you have to configure it manually in the config file... ────────────────────────────────────── dan-generated content may be incorrect

…

On Fri, Jun 12, 2026 at 9:36 AM trigger2k20 ***@***.***> wrote: *trigger2k20* left a comment (agustif/opencode-lmstudio#24) <#24 (comment)> I ran into the exact same issue while using this plugin. Then I realized that OpenCode already has native support for LM Studio local models, so it looks like this plugin is no longer needed and can just be uninstalled. You sure ? I did not succeed... I made a fork of this project to fix it and to work with an API key. This fork also supports "on the fly" modell list. — Reply to this email directly, view it on GitHub <#24?email_source=notifications&email_token=AAD4PPY5M7FQS37LZ2HPLQT47QBOBA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTINRZGE3TMMZRGE3KM4TFMFZW63VGNVQW45LBNSSWK5TFNZ2KYZTPN52GK4S7MNWGSY3L#issuecomment-4691763116>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAD4PPYRIWB4BULSNYMJQM347QBOBAVCNFSNUABGKJSXA33TNF2G64TZHMYTCMJUG44TGMZYHA5US43TOVSTWNBUGE2TKNZXGU2TTILWAI> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

@DanTulovsky

HI @DanTulovsky , the fork and pending upstream PR are available here:

Fork:
https://github.com/trigger2k20/opencode-lmstudio

Pull request:
#29

The PR dynamically queries LM Studio through /v1/models, filters embedding
models from the OpenCode chat-model list, supports authenticated LM Studio
servers, and removes stale built-in models through the generated whitelist.

It has not been merged or published yet, so installing "opencode-lmstudio"
normally will not include these changes.

The built in support doesn't seem to automatically query lm studio.. so you
have to configure it manually in the config file...

──────────────────────────────────────
dan-generated content may be incorrect
…

On Fri, Jun 12, 2026 at 9:36 AM trigger2k20 @.***> wrote:
trigger2k20 left a comment (agustif/opencode-lmstudio#24)
<(earlier comment)>

I ran into the exact same issue while using this plugin. Then I realized
that OpenCode already has native support for LM Studio local models, so it
looks like this plugin is no longer needed and can just be uninstalled.

You sure ? I did not succeed...
I made a fork of this project to fix it and to work with an API key. This
fork also supports "on the fly" modell list.

—
Reply to this email directly, view it on GitHub
<#24?email_source=notifications&email_token=AAD4PPY5M7FQS37LZ2HPLQT47QBOBA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTINRZGE3TMMZRGE3KM4TFMFZW63VGNVQW45LBNSSWK5TFNZ2KYZTPN52GK4S7MNWGSY3L#issuecomment-4691763116>,
or unsubscribe
<github.com/notifications/unsubscribe-auth/AAD4PPYRIWB4BULSNYMJQM347QBOBAVCNFSNUABGKJSXA33TNF2G64TZHMYTCMJUG44TGMZYHA5US43TOVSTWNBUGE2TKNZXGU2TTILWAI>
.
You are receiving this because you are subscribed to this thread.Message
ID: @.***>

In that case there's no use of this plugin at all! And why's this some agent generated reply? Is this project that abandoned? At least approve qualifying PRs!

@agustif

@agustif I understand that you may be a busy person but you can also let give others priveleged access to review and approve pull requests. :)

The built in support doesn't seem to automatically query lm studio.. so you
have to configure it manually in the config file...
──────────────────────────────────────
dan-generated content may be incorrect
…
On Fri, Jun 12, 2026 at 9:36 AM trigger2k20 @.> wrote:
trigger2k20 left a comment (agustif/opencode-lmstudio#24)
<(earlier comment)>
I ran into the exact same issue while using this plugin. Then I realized
that OpenCode already has native support for LM Studio local models, so it
looks like this plugin is no longer needed and can just be uninstalled.
You sure ? I did not succeed...
I made a fork of this project to fix it and to work with an API key. This
fork also supports "on the fly" modell list.
—
Reply to this email directly, view it on GitHub
<#24?email_source=notifications&email_token=AAD4PPY5M7FQS37LZ2HPLQT47QBOBA5CNFSNUABFM5UWIORPF5TWS5BNNB2WEL2JONZXKZKDN5WW2ZLOOQXTINRZGE3TMMZRGE3KM4TFMFZW63VGNVQW45LBNSSWK5TFNZ2KYZTPN52GK4S7MNWGSY3L#issuecomment-4691763116>,
or unsubscribe
<github.com/notifications/unsubscribe-auth/AAD4PPYRIWB4BULSNYMJQM347QBOBAVCNFSNUABGKJSXA33TNF2G64TZHMYTCMJUG44TGMZYHA5US43TOVSTWNBUGE2TKNZXGU2TTILWAI>
.
You are receiving this because you are subscribed to this thread.Message
ID: _@_.**>

In that case there's no use of this plugin at all! And why's this some agent generated reply? Is this project that abandoned? At least approve qualifying PRs!
@rashomon-gh Do you mean by "built" my Fork ? Did you try it ?

approved #28

sorry hadn't seen this earlier

gonna go through all the PR's now

@agustif

@agustif Thank you for reviewing and merging PR #29.

One remaining documentation/release issue: the README already recommends opencode-lmstudio@0.3.1, but npm currently still provides 0.3.0 as latest. Therefore, users following the README cannot install version 0.3.1 yet and will receive the previous package without the merged changes.

Therefore, please publish opencode-lmstudio@0.3.1 to npm, thanks.

I receive a similar error, when I try to start opencode TUI:

Error: 1 of 5 requests failed: config.get: Expected "text" | "audio" | "image" | "video" | "pdf", got "embedding"
  at ["provider"]["lmstudio"]["models"]["text-embedding-nomic-embed-text-v1_5"]["modalities"]["output"][0]
    at ej (B:/~BUN/root/chunk-5e1nbvt1.js:469:644)
    at <anonymous> (B:/~BUN/root/chunk-5e1nbvt1.js:469:6060)
    at processTicksAndRejections (native:7:39)

Is there a fix for this? In my case the embedding model isn't even. loaded... but still shows in the list. Seemingly another bug: lmstudio-ai/lmstudio-bug-tracker#763

You can fix the error by adding the following to opencode.json:

"models": {
"text-embedding-nomic-embed-text-v1_5": {
"modalities": {
"output": ["text"]
}
}
}

What worked for me was adding this config under the provider.lmstudio field, together with an 'input' field:
"provider": { "lmstudio": { "models": { "text-embedding-nomic-embed-text-v1_5": { "modalities": { "input": ["text"], "output": ["text"] } } } } },
But we should have patience and wait for the developer fix too. Thanks for the cool plugin!

Published — opencode-lmstudio@0.3.1 is now live on npm, and latest now resolves to 0.3.1.

Thanks again for PR #29 and for flagging the missing npm release.

opencode-lmstudio@1.0.0-rc.1 is now available and contains the typed-discovery fix for the startup failure reported in this thread.

The RC reads LM Studio's GET /api/v0/models metadata, registers only models reported as llm or vlm, and omits embeddings records from OpenCode's chat provider. It never emits "embedding" as an OpenCode output modality. The public npm package has passed real OpenCode startup and model-picker tests against a fixture containing LLM, VLM, and embedding records.

Could affected users retest with the exact RC, including setups where the embedding model is downloaded but not loaded?

{
  "$schema": "https://opencode.ai/config.json",
  "plugin": ["opencode-lmstudio@1.0.0-rc.1"]
}

Please report your OpenCode and LM Studio versions and whether startup, model selection, and chat now work without a manual embedding override. If the original validation error is gone, please confirm that this issue can be closed. If it persists, include the first current validation error and the sanitized embedding record returned by /api/v0/models.

The complete RC release matrix and reporting template are in #34.

opencode-lmstudio@1.0.0-rc.2 includes loaded and unloaded embedding records in its startup regression fixtures.

Native /api/v1/models records with type: "llm" enter the chat provider; type: "embedding" records are excluded, so they cannot produce an invalid OpenCode chat modality. The public package passed clean-cache startup, model picker, and chat tests. This RC requires OpenCode 1.17.7 or newer; the originally reported 1.14.46 is below the supported minimum.

Please upgrade OpenCode, pin "plugin": ["opencode-lmstudio@1.0.0-rc.2"], restart, and test with your embedding model present in both downloaded/unloaded and loaded states if possible. If startup and chat now work without a manual override, please confirm this issue can be closed. If not, include the first current validation error and the sanitized embedding record. See #34 for the shared template.

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[Bug] Opencode wont start with this plugin 1.14.46 #24

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[Bug] Opencode wont start with this plugin 1.14.46 #24

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HumanError13 commented on May 11, 2026

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