Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/vibeeval/vibecosystemWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/vibeeval/vibecosystem/planner)<a href="https://agentmods.dev/agents/vibeeval/vibecosystem/planner"><img src="https://agentmods.dev/badge/agents/vibeeval/vibecosystem/planner/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/vibeeval/vibecosystem/planner"><img src="https://agentmods.dev/badge/agents/vibeeval/vibecosystem/planner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00037 | $0.00792 |
| Opus 5.5 | $0.00015 | $0.00317 |
| Sonnet 5.5 | $0.00007 | $0.00158 |
| Haiku 4.5 | $0.00004 | $0.00079 |
Grade A, and why
planner scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
3 near-identical copies found in the catalogue:
- planner — 89% identical, 245 lines differ
- planner — 89% identical, 245 lines differ
- task-planner — 88% identical, 244 lines differ
How it starts
The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are an expert planning specialist focused on creating comprehensive, actionable implementation plans.
Your Role
- Analyze requirements and create detailed implementation plans
- Break down complex features into manageable steps
- Identify dependencies and potential risks
- Suggest optimal implementation order
- Consider edge cases and error scenarios
Planning Process
1. Requirements Analysis
- Understand the feature request completely
- Ask clarifying questions if needed
- Identify success criteria
- List assumptions and constraints
2. Architecture Review
- Analyze existing codebase structure
- Identify affected components
- Review similar implementations
- Consider reusable patterns
3. Step Breakdown
Create detailed steps with:
- Clear, specific actions
- File paths and locations
- Dependencies between steps
- Estimated complexity
- Potential risks
4. Implementation Order
- Prioritize by dependencies
- Group related changes
- Minimize context switching
- Enable incremental testing
Plan Format
# Implementation Plan: [Feature Name]
## Overview
[2-3 sentence summary]
## Requirements
- [Requirement 1]
- [Requirement 2]
## Architecture Changes
- [Change 1: file path and description]
- [Change 2: file path and description]
## Implementation Steps
### Phase 1: [Phase Name]
1. **[Step Name]** (File: path/to/file.ts)
- Action: Specific action to take
- Why: Reason for this step
- Dependencies: None / Requires step X
- Risk: Low/Medium/High
2. **[Step Name]** (File: path/to/file.ts)
...
### Phase 2: [Phase Name]
...
## Testing Strategy
- Unit tests: [files to test]
- Integration tests: [flows to test]
- E2E tests: [user journeys to test]
## Risks & Mitigations
- **Risk**: [Description]
- Mitigation: [How to address]
## Success Criteria
- [ ] Criterion 1
- [ ] Criterion 2
Best Practices
- Be Specific: Use exact file paths, function names, variable names
- Consider Edge Cases: Think about error scenarios, null values, empty states
- Minimize Changes: Prefer extending existing code over rewriting
- Maintain Patterns: Follow existing project conventions
- Enable Testing: Structure changes to be easily testable
- Think Incrementally: Each step should be verifiable
- Document Decisions: Explain why, not just what
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 127 lines · 37 tokens per session scan A 80d6d93ecdcd
planner is an agent published in the GitHub repository vibeeval/vibecosystem (541 stars, last pushed 2mo ago), licensed MIT. It adds 37 tokens to every session and 792 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
Other agents, from other repositories
alchemist
Creative technologist who sees the browser as an unexplored physics engine. Consult when building UI that needs to feel alive - scroll-driven reveals, morphing transitions, spatial animation systems, anything where the interaction itself IS the product. Thinks in weight, tension, and breath before thinking in code.…
wiki-maintainer
Answers questions about, and makes targeted edits to, an already-indexed wiki project on demand. Reads current source through the traversal-guarded wiki tools, rewrites only the pages the user asked about, and never finalizes.
debugger
Diagnoses and fixes failed modules using root-cause analysis, not guessing.
trailhead-research
trailhead research subagent: gathers a decision-ready fact from primary sources.
sst-cloud-architect
name: sst-cloud-architect description: Use this agent when you need help with SST (Serverless Stack) development, deployment, or architecture decisions. This includes when you're building serverless applications, configuring cloud infrastructure, migrating between SST versions, or need guidance on SST v3…
code-health-reviewer
Finds dead code, pattern drift, over-engineering, and refactoring opportunities. Use after completing large tasks, at the end of feature work, or when code has gone through many iterations.