Agent skill

Trajectory Selector

A skill your agent uses when Codex must select, compare, or adapt exemplar sentence-type trajectories from PaperPRISM's trajectory library before creating a ClozeBlueprint or writing a paper.

No licenceAuto-check passed

Install Trajectory Selector

skills CLI

$ npx skills add XueruiSu/Paper-PRISM --skill trajectory-selector -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install XueruiSu/Paper-PRISM trajectory-selector --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/XueruiSu/Paper-PRISM.git skills-src && mkdir -p .claude/skills && cp -r skills-src/codex_skills/trajectory-selector .claude/skills/trajectory-selector && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "trajectory-selector" agent skill from https://github.com/XueruiSu/Paper-PRISM/tree/main/codex_skills/trajectory-selector into .claude/skills/trajectory-selector/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "trajectory-selector", 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

$skill-installer install https://github.com/XueruiSu/Paper-PRISM/tree/main/codex_skills/trajectory-selector

Type 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.

skills CLI

$ npx skills add XueruiSu/Paper-PRISM --skill trajectory-selector -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install XueruiSu/Paper-PRISM trajectory-selector --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/XueruiSu/Paper-PRISM.git skills-src && mkdir -p .agents/skills && cp -r skills-src/codex_skills/trajectory-selector .agents/skills/trajectory-selector && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "trajectory-selector" agent skill from https://github.com/XueruiSu/Paper-PRISM/tree/main/codex_skills/trajectory-selector into .agents/skills/trajectory-selector/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "trajectory-selector", 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.

skills CLI

$ npx skills add XueruiSu/Paper-PRISM --skill trajectory-selector -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install XueruiSu/Paper-PRISM trajectory-selector --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/XueruiSu/Paper-PRISM.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/codex_skills/trajectory-selector .cursor/skills/trajectory-selector && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "trajectory-selector" agent skill from https://github.com/XueruiSu/Paper-PRISM/tree/main/codex_skills/trajectory-selector into .cursor/skills/trajectory-selector/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "trajectory-selector", 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

$ gemini skills install https://github.com/XueruiSu/Paper-PRISM.git --path codex_skills/trajectory-selector

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add XueruiSu/Paper-PRISM --skill trajectory-selector -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install XueruiSu/Paper-PRISM trajectory-selector --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/XueruiSu/Paper-PRISM.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/codex_skills/trajectory-selector .gemini/skills/trajectory-selector && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "trajectory-selector" agent skill from https://github.com/XueruiSu/Paper-PRISM/tree/main/codex_skills/trajectory-selector into .gemini/skills/trajectory-selector/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "trajectory-selector", 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.

GitHub CLI

$ gh skill install XueruiSu/Paper-PRISM trajectory-selector

Installs 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).

skills CLI

$ npx skills add XueruiSu/Paper-PRISM --skill trajectory-selector -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/XueruiSu/Paper-PRISM.git skills-src && mkdir -p .github/skills && cp -r skills-src/codex_skills/trajectory-selector .github/skills/trajectory-selector && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "trajectory-selector" agent skill from https://github.com/XueruiSu/Paper-PRISM/tree/main/codex_skills/trajectory-selector into .github/skills/trajectory-selector/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "trajectory-selector", 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.

skills CLI

$ npx skills add XueruiSu/Paper-PRISM --skill trajectory-selector -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install XueruiSu/Paper-PRISM trajectory-selector --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/XueruiSu/Paper-PRISM.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/codex_skills/trajectory-selector .opencode/skills/trajectory-selector && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "trajectory-selector" agent skill from https://github.com/XueruiSu/Paper-PRISM/tree/main/codex_skills/trajectory-selector into .opencode/skills/trajectory-selector/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "trajectory-selector", 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: trajectory-selector
GitHub stars: 109
Token cost: ~723 tokens
SKILL.md length: 302 words
Files: 2
Skills in repo: 11
Repo updated: Jul 11, 2026
First seen: Oct 7, 2026
Licence: None found

At a glance

A skill your agent uses when Codex must select, compare, or adapt exemplar sentence-type trajectories from PaperPRISM's trajectory library before creating a ClozeBlueprint or writing a paper.

Works in 9 steps: Locate the PaperPRISM resource root… → Identify target archetype/category,… → Retrieve top-k candidate trajectories… → …
Codex must select
SKILL.md covers Goal, Inputs, Workflow and Rules, plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Trajectory Selector is an agent skill from XueruiSu/Paper-PRISM. Use when Codex must select, compare, or adapt exemplar sentence-type trajectories from PaperPRISM's trajectory library before creating a ClozeBlueprint or writing a paper.

Its SKILL.md is about 720 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).

When your agent uses it

Codex must select
Adapt exemplar sentence-type trajectories from PaperPRISMs trajectory library before creating a ClozeBlueprint
Writing a paper

Example prompts

“/trajectory-selector”

Workflow steps

9 steps, taken from the first numbered list in SKILL.md.

Locate the PaperPRISM resource root using ../_shared/paperprism_codex_native.md.
Identify target archetype/category, persuasion path, domain, venue level, evidence pattern, and section needs.
Retrieve top-k candidate trajectories from the trajectory library before any writing. Default k = 5.
Inspect candidate trajectories under the same or nearest archetype/category.
Rank candidates by
Assign each candidate a selection score and concise rationale.
Select one primary trajectory and optional borrowed section trajectories.
Write a TrajectorySelectionReport in readable form
Hand the report to trajectory-compiler through logical-template-builder to create ClozeBlueprint.md.

What it can do on your machine

Read from SKILL.md and the folder at commit 13e134f. 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
No scripts in the folder and no shell commands in SKILL.md.
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

Trajectory Selector loads about 723 tokens when it runs. Until then it costs about 48 tokens; SKILL.md has 302 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~48
When it runs · the whole SKILL.md, loaded when a task matches: ~723

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); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 302 words (~723 tokens).

name: trajectory-selector

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file in codex_skills/trajectory-selector of XueruiSu/Paper-PRISM.

SKILL.md
agents/openai.yaml

Open the folder on GitHubat commit 13e134f

Compare with similar skills

Trajectory Selector 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.

Trajectory Selector compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Trajectory Selector this skillXueruiSu/Paper-PRISM	109	—	~723	Automated safety check: Pass	None	3 mo ago
Has Selectorthedaviddias/Front-End-Checklist	74k	—	~547	Automated safety check: Pass	MIT	4 days ago
Agent Adaptive Coordinatorruvnet/ruflo	74k	2 repos	~4k	Automated safety check: Pass	MIT	today
Select Namethedaviddias/Front-End-Checklist	74k	—	~451	Automated safety check: Pass	MIT	4 days ago
Add Selectorsimstudioai/sim	30k	—	~1.7k	Automated safety check: Pass	Apache-2.0	today
Validate Selectorsimstudioai/sim	30k	—	~1.2k	Automated safety check: Pass	Apache-2.0	today

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Questions about Trajectory Selector

What does Trajectory Selector do?

A skill your agent uses when Codex must select, compare, or adapt exemplar sentence-type trajectories from PaperPRISM's trajectory library before creating a ClozeBlueprint or writing a paper. Trajectory Selector is an agent skill from XueruiSu/Paper-PRISM. Use when Codex must select, compare, or adapt exemplar sentence-type trajectories from PaperPRISM's trajectory library before creating a ClozeBlueprint or writing a paper.

When should I use Trajectory Selector?

Trajectory Selector fits situations like: Codex must select; adapt exemplar sentence-type trajectories from PaperPRISMs trajectory library before creating a ClozeBlueprint; writing a paper.

How do I install Trajectory Selector in Claude Code?

Run `npx skills add XueruiSu/Paper-PRISM --skill trajectory-selector -a claude-code`. Or copy the skill folder (codex_skills/trajectory-selector in XueruiSu/Paper-PRISM) into .claude/skills/trajectory-selector in your project. Claude Code loads it when a task matches its description.

How do I install Trajectory Selector in Codex?

Run `npx skills add XueruiSu/Paper-PRISM --skill trajectory-selector -a codex`. Or copy the skill folder (codex_skills/trajectory-selector in XueruiSu/Paper-PRISM) into .agents/skills/trajectory-selector in your project. Codex loads it when a task matches its description.

Can I use Trajectory Selector 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 XueruiSu/Paper-PRISM --skill trajectory-selector -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/trajectory-selector, .gemini/skills/trajectory-selector, .github/skills/trajectory-selector and .opencode/skills/trajectory-selector in your project.

What does Trajectory Selector need to run?

SKILL.md names no scripts, command-line tools or credentials: Trajectory Selector is instructions for the agent only.

Does Trajectory Selector 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 Trajectory Selector 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. Review the folder before installing.

What licence does Trajectory Selector use?

No licence was found for Trajectory Selector or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Trajectory Selector use?

About 723 tokens (SKILL.md is roughly 2.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Trajectory Selector?

Skills that share tags, products or a category with Trajectory Selector: Has Selector (thedaviddias/Front-End-Checklist, 74k stars), Agent Adaptive Coordinator (ruvnet/ruflo, 74k stars), Select Name (thedaviddias/Front-End-Checklist, 74k stars) and Add Selector (simstudioai/sim, 30k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Trajectory Selector?

XueruiSu (a GitHub user) maintains it in XueruiSu/Paper-PRISM, which has 109 GitHub stars. The repository holds 11 skills in this directory. The repository was last updated on July 11, 2026.

Source: XueruiSu/Paper-PRISM on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Trajectory Selector

Install Trajectory Selector

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

Has Selector

Agent Adaptive Coordinator

Select Name

Add Selector

Validate Selector

Bio Comparative Genomics Positive Selection

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Questions about Trajectory Selector