Trellis Session Insight
mindfold-ai/Trellis
Reach into past AI conversation history through the trellis mem CLI.
How to add or debug a Nexus LLM provider adapter — what every adapter must wire, how to verify it against a live provider, and the failure modes that produce a silently blank chat.
Install Nexus LLM Adapters
$ npx skills add ProfSynapse/nexus --skill nexus-llm-adapters -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install ProfSynapse/nexus nexus-llm-adapters --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/ProfSynapse/nexus.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.skills/nexus-llm-adapters .claude/skills/nexus-llm-adapters && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "nexus-llm-adapters" agent skill from https://github.com/ProfSynapse/nexus/tree/main/.skills/nexus-llm-adapters into .claude/skills/nexus-llm-adapters/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nexus-llm-adapters", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/ProfSynapse/nexus/tree/main/.skills/nexus-llm-adaptersType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add ProfSynapse/nexus --skill nexus-llm-adapters -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install ProfSynapse/nexus nexus-llm-adapters --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ProfSynapse/nexus.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.skills/nexus-llm-adapters .agents/skills/nexus-llm-adapters && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "nexus-llm-adapters" agent skill from https://github.com/ProfSynapse/nexus/tree/main/.skills/nexus-llm-adapters into .agents/skills/nexus-llm-adapters/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nexus-llm-adapters", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ProfSynapse/nexus --skill nexus-llm-adapters -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install ProfSynapse/nexus nexus-llm-adapters --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ProfSynapse/nexus.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.skills/nexus-llm-adapters .cursor/skills/nexus-llm-adapters && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "nexus-llm-adapters" agent skill from https://github.com/ProfSynapse/nexus/tree/main/.skills/nexus-llm-adapters into .cursor/skills/nexus-llm-adapters/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nexus-llm-adapters", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/ProfSynapse/nexus.git --path .skills/nexus-llm-adapters--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add ProfSynapse/nexus --skill nexus-llm-adapters -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install ProfSynapse/nexus nexus-llm-adapters --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ProfSynapse/nexus.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.skills/nexus-llm-adapters .gemini/skills/nexus-llm-adapters && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "nexus-llm-adapters" agent skill from https://github.com/ProfSynapse/nexus/tree/main/.skills/nexus-llm-adapters into .gemini/skills/nexus-llm-adapters/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nexus-llm-adapters", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install ProfSynapse/nexus nexus-llm-adaptersInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add ProfSynapse/nexus --skill nexus-llm-adapters -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/ProfSynapse/nexus.git skills-src && mkdir -p .github/skills && cp -r skills-src/.skills/nexus-llm-adapters .github/skills/nexus-llm-adapters && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "nexus-llm-adapters" agent skill from https://github.com/ProfSynapse/nexus/tree/main/.skills/nexus-llm-adapters into .github/skills/nexus-llm-adapters/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nexus-llm-adapters", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add ProfSynapse/nexus --skill nexus-llm-adapters -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install ProfSynapse/nexus nexus-llm-adapters --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/ProfSynapse/nexus.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.skills/nexus-llm-adapters .opencode/skills/nexus-llm-adapters && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "nexus-llm-adapters" agent skill from https://github.com/ProfSynapse/nexus/tree/main/.skills/nexus-llm-adapters into .opencode/skills/nexus-llm-adapters/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nexus-llm-adapters", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
nexus-llm-adapters- GitHub stars
- 157
- Token cost
- ~704 tokens
- SKILL.md length
- 308 words
- Files
- 13 (incl. scripts, references)
- Skills in repo
- 12
- Repo updated
- First seen
- Licence
- MIT
At a glance
How to add or debug a Nexus LLM provider adapter — what every adapter must wire, how to verify it against a live provider, and the failure modes that produce a silently blank chat.
- Works in 4 steps: Adding or changing an adapter — follow… → Chat is blank, missing reasoning,… → Before calling any adapter change done —… → …
- Changing a provider adapter
- SKILL.md covers Workflow, Map, Siblings — do not duplicate… and Refine
- Runs Python scripts from its folder
What it does
Nexus LLM Adapters is an agent skill from ProfSynapse/nexus. How to add or debug a Nexus LLM provider adapter — what every adapter must wire, how to verify it against a live provider, and the failure modes that produce a silently blank chat. Use when adding or changing a provider adapter, debugging streaming or reasoning display, working with local or CLI-backed models, or touching chat branch plumbing.
Its SKILL.md is about 700 tokens, which your agent loads only when the skill is triggered. The skill folder holds 15 other files, including scripts and reference files (for example `protocols/add-adapter.md`, `protocols/debug-adapter.md` and `protocols/self-refine.md`).
It sits in Development, covering Debugging. The licence is MIT.
When your agent uses it
- Changing a provider adapter
- Debugging streaming
- Reasoning display
- Working with local
Example prompts
- “/nexus-llm-adapters”
Requirements
- Python 3
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Adding or changing an adapter — follow protocols/add-adapter.md. It is a
- Chat is blank, missing reasoning, looping, or doubling — follow
- Before calling any adapter change done — run protocols/verify-adapter.md.
- End of a session that used this skill — run protocols/self-refine.md.
What it can do on your machine
Read from SKILL.md and the folder at commit eb20895. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Nexus LLM Adapters loads about 704 tokens when it runs, and up to ~7.7k if it reads all its reference files. Until then it costs about 91 tokens; SKILL.md has 308 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
The full file from ProfSynapse/nexus at commit eb20895, republished under its MIT licence (© ProfSynapse). 308 words, ~704 tokens.
Download SKILL.mdSave it as
.claude/skills/nexus-llm-adapters/SKILL.md (or your agent's skills folder). This skill also uses 12 other files; get the full folder from GitHub.- name
- nexus-llm-adapters
- description
- How to add or debug a Nexus LLM provider adapter — what every adapter must wire, how to verify it against a live provider, and the failure modes that produce a silently blank chat. Use when adding or changing a provider adapter, debugging streaming or reasoning display, working with local or CLI-backed models, or touching chat branch plumbing.
Nexus LLM adapters
Adapters live in src/services/llm/adapters/{provider}/ and extend BaseAdapter,
which talks direct HTTP through ProviderHttpClient. There are no vendor LLM SDKs
in this repo; adding one is a decision to raise, not to make.
This router points at the procedure. The detail loads when you take the path.
Workflow
- Adding or changing an adapter — follow
protocols/add-adapter.md. It is a wiring checklist; work it in order rather than pattern-matching an existing adapter, because the pieces that get forgotten are the ones no compiler checks. - Chat is blank, missing reasoning, looping, or doubling — follow
protocols/debug-adapter.md. Start from the symptom, not the adapter source: these failures have known causes and reading code first wastes the trip. - Before calling any adapter change done — run
protocols/verify-adapter.md. You MUST exercise the non-streaming path, the streaming path, and the streaming error path separately; they fail independently and unit tests prove none of them. You MUST also runscripts/check_stream_error_wiring.pyon the adapter you touched and get a zero exit. - End of a session that used this skill — run
protocols/self-refine.md.
Map
protocols/the procedures: add-adapter, debug-adapter, verify-adapter, self-refine.references/mechanism and rationale, read on demand:symptoms.md(the symptom→cause lookup the debug protocol enters through),streaming-contract.md,reasoning-rendering.md,local-providers.md,cli-providers.md,chat-plumbing.md.scripts/check_stream_error_wiring.py— checks that an adapter parsing an SSE stream wiresextractError. Run it, do not re-derive it by reading source.
Siblings — do not duplicate them here
nexus-model-updatesowns model metadata: ids, pricing, context windows, capability flags, provider defaults, and the live provider smoke test.nexus-model-evalandnexus-eval-harnessown grading models on tool use.nexus-testingowns test lanes, what a mock can prove, and the in-app loop.nexus-mobile-compatowns Node imports, dependency vetting, and desktop-only gating — which every adapter that shells out or touches the filesystem needs.
Refine
At the end of a session that used this skill, run protocols/self-refine.md and
append to refinement-log.md.
© ProfSynapse, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 12 other files (scripts, references) in .skills/nexus-llm-adapters of ProfSynapse/nexus.
- SKILL.md
- protocols/add-adapter.md
- protocols/debug-adapter.md
- protocols/self-refine.md
- protocols/verify-adapter.md
- references/chat-plumbing.md
- references/cli-providers.md
- references/local-providers.md
- references/reasoning-rendering.md
- references/streaming-contract.md
- references/symptoms.md
- refinement-log.md
- scripts/check_stream_error_wiring.py
Open the folder on GitHubat commit eb20895
Compare with similar skills
Nexus LLM Adapters next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Nexus LLM Adapters this skillProfSynapse/nexus | 157 | — | ~704 | Automated safety check: Pass | MIT | |
| Trellis Session Insightmindfold-ai/Trellis | 15k | 4 repos | ~1.7k | Automated safety check: Pass | AGPL-3.0 | |
| Native Data FetchingCherryHQ/cherry-studio-app | 4k | 6 repos | ~2.9k | Automated safety check: Notes | MIT | |
| Debugging Executionsn8n-io/n8n | 207k | — | ~2.6k | Automated safety check: Pass | Custom licence | |
| Aoti Debugpytorch/pytorch | 104k | 1 repos | ~1.7k | Automated safety check: Pass | Custom licence | |
| Herdr Throwaway Reproductionherdrdev/herdr | 43k | — | ~2.4k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Nexus LLM Adapters
What does Nexus LLM Adapters do?
How to add or debug a Nexus LLM provider adapter — what every adapter must wire, how to verify it against a live provider, and the failure modes that produce a silently blank chat. Nexus LLM Adapters is an agent skill from ProfSynapse/nexus. How to add or debug a Nexus LLM provider adapter — what every adapter must wire, how to verify it against a live provider, and the failure modes that produce a silently blank chat.
When should I use Nexus LLM Adapters?
Nexus LLM Adapters fits situations like: changing a provider adapter; debugging streaming; reasoning display; working with local.
How do I install Nexus LLM Adapters in Claude Code?
Run `npx skills add ProfSynapse/nexus --skill nexus-llm-adapters -a claude-code`. Or copy the skill folder (.skills/nexus-llm-adapters in ProfSynapse/nexus) into .claude/skills/nexus-llm-adapters in your project. Claude Code loads it when a task matches its description.
How do I install Nexus LLM Adapters in Codex?
Run `npx skills add ProfSynapse/nexus --skill nexus-llm-adapters -a codex`. Or copy the skill folder (.skills/nexus-llm-adapters in ProfSynapse/nexus) into .agents/skills/nexus-llm-adapters in your project. Codex loads it when a task matches its description.
Can I use Nexus LLM Adapters in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add ProfSynapse/nexus --skill nexus-llm-adapters -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/nexus-llm-adapters, .gemini/skills/nexus-llm-adapters, .github/skills/nexus-llm-adapters and .opencode/skills/nexus-llm-adapters in your project.
What does Nexus LLM Adapters need to run?
Going by SKILL.md and its folder, Nexus LLM Adapters needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Nexus LLM Adapters access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Nexus LLM Adapters safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Nexus LLM Adapters use?
Nexus LLM Adapters is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Nexus LLM Adapters use?
About 704 tokens (SKILL.md is roughly 2.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 7k tokens, read only when the agent opens those files.
What are the alternatives to Nexus LLM Adapters?
Skills that share tags, products or a category with Nexus LLM Adapters: Trellis Session Insight (mindfold-ai/Trellis, 15k stars), Native Data Fetching (CherryHQ/cherry-studio-app, 4k stars), Debugging Executions (n8n-io/n8n, 207k stars) and Aoti Debug (pytorch/pytorch, 104k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Nexus LLM Adapters?
ProfSynapse (a GitHub user) maintains it in ProfSynapse/nexus, which has 157 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on October 8, 2026.
Source: ProfSynapse/nexus on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.