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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/neolabhq/context-engineering-kit --skill propose-hypotheses- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads propose-hypotheses automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Propose Hypotheses Workflow
Execute the First Principles Framework (FPF) cycle: generate competing hypotheses, verify logic, validate evidence, audit trust, and produce a decision.
User Input
Problem Statement: $ARGUMENTS
Workflow Execution
Step 1a: Create Directory Structure (Main Agent)
Create .fpf/ directory structure if it does not exist:
mkdir -p .fpf/{evidence,decisions,sessions,knowledge/{L0,L1,L2,invalid}}
touch .fpf/{evidence,decisions,sessions,knowledge/{L0,L1,L2,invalid}}/.gitkeep
Postcondition: .fpf/ directory scaffold exists.
Step 1b: Initialize Context (FPF Agent)
Launch fpf-agent with sonnet[1m] model:
- Description: "Initialize FPF context"
- Prompt:
Read ${CLAUDE_PLUGIN_ROOT}/tasks/init-context.md and execute. Problem Statement: $ARGUMENTS **Write**: Context summary to `.fpf/context.md`**
Step 2: Generate Hypotheses (FPF Agent)
Launch fpf-agent with sonnet[1m] model:
- Description: "Generate L0 hypotheses"
- Prompt:
Read ${CLAUDE_PLUGIN_ROOT}/tasks/generate-hypotheses.md and execute. Problem Statement: $ARGUMENTS Context: <summary from Step 1b> **Write**: List of hypothesis IDs and titles to `.fpf/knowledge/L0/` Reply with summary table in markdown format: | ID | Title | Kind | Scope | |----|-------|------|-------| | ... | ... | ... | ... |
Step 3: Present Summary (Main Agent)
- Read all L0 hypothesis files from
.fpf/knowledge/L0/ - Present summary table from agent response.
- Ask user: "Would you like to add any hypotheses of your own? (yes/no)"
Step 4: Add User Hypothesis (FPF Agent, Conditional Loop)
Condition: User says yes to adding hypotheses.
Launch fpf-agent with sonnet[1m] model:
- Description: "Add user hypothesis"
- Prompt:
Read ${CLAUDE_PLUGIN_ROOT}/tasks/add-user-hypothesis.md and execute. User Hypothesis Description: <get from user> **Write**: User hypothesis to `.fpf/knowledge/L0/`
Loop: Return to Step 3 after hypothesis is added.
Exit: When user says no or declines to add more.
Step 5: Verify Logic (Parallel Sub-Agents)
Condition: User finished adding hypotheses.
For EACH L0 hypothesis file in .fpf/knowledge/L0/, launch parallel fpf-agent with sonnet[1m] model:
- Description: "Verify hypothesis: <hypothesis-id>"
- Prompt:
Read ${CLAUDE_PLUGIN_ROOT}/tasks/verify-logic.md and execute. Hypothesis ID: <hypothesis-id> Hypothesis File: .fpf/knowledge/L0/<hypothesis-id>.md **Move**: After you complete verification, move the file to `.fpf/knowledge/L1/` or `.fpf/knowledge/invalid/`.
Wait for all agents, then check that files are moved to .fpf/knowledge/L1/ or .fpf/knowledge/invalid/.
Step 6: Validate Evidence (Parallel Sub-Agents)
For EACH L1 hypothesis file in .fpf/knowledge/L1/, launch parallel fpf-agent with sonnet[1m] model:
- Description: "Validate hypothesis: <hypothesis-id>"
- Prompt:
Read ${CLAUDE_PLUGIN_ROOT}/tasks/validate-evidence.md and execute. Hypothesis ID: <hypothesis-id> Hypothesis File: .fpf/knowledge/L1/<hypothesis-id>.md **Move**: After you complete validation, move the file to `.fpf/knowledge/L2/` or `.fpf/knowledge/invalid/`.
Wait for all agents, then check that files are moved to .fpf/knowledge/L2/ or .fpf/knowledge/invalid/.
Step 7: Audit Trust (Parallel Sub-Agents)
For EACH L2 hypothesis file in .fpf/knowledge/L2/, launch parallel fpf-agent with sonnet[1m] model:
- Description: "Audit trust: <hypothesis-id>"
- Prompt:
Read ${CLAUDE_PLUGIN_ROOT}/tasks/audit-trust.md and execute. Hypothesis ID: <hypothesis-id> Hypothesis File: .fpf/knowledge/L2/<hypothesis-id>.md **Write**: Audit report to `.fpf/evidence/audit-{hypothesis-id}-{YYYY-MM-DD}.md` **Reply**: with R_eff score and weakest link
Wait for all agents, then check that audit reports are created in .fpf/evidence/.
Step 8: Make Decision (FPF Agent)
Launch fpf-agent with sonnet[1m] model:
- Description: "Create decision record"
- Prompt:
Read ${CLAUDE_PLUGIN_ROOT}/tasks/decide.md and execute. Problem Statement: $ARGUMENTS L2 Hypotheses Directory: .fpf/knowledge/L2/ Audit Reports: .fpf/evidence/ **Write**: Decision record to `.fpf/decisions/` **Reply**: with decision record summary in markdown format: | Hypothesis | R_eff | Weakest Link | Status | |------------|-------|--------------|--------| | ... | ... | ... | ... | **Recommended Decision**: <hypothesis title> **Rationale**: <brief explanation>
Wait for agent, then check that decision record is created in .fpf/decisions/.
Step 9: Present Final Summary (Main Agent)
- Read the DRR from
.fpf/decisions/ - Present results from agent response.
- Present next steps:
- Implement the selected hypothesis
- Use
/fpf:statusto check FPF state - Use
/fpf:actualizeif codebase changes
- Ask user if he agree with the decision, if not launch fpf-agent at step 8 with instruction to modify the decision as user wants.
Completion
Workflow complete when:
-
.fpf/directory structure exists - Context recorded in
.fpf/context.md - Hypotheses generated, verified, validated, and audited
- DRR created in
.fpf/decisions/ - Final summary presented to user
Artifacts Created:
.fpf/context.md- Problem context.fpf/knowledge/L0/*.md- Initial hypotheses.fpf/knowledge/L1/*.md- Verified hypotheses.fpf/knowledge/L2/*.md- Validated hypotheses.fpf/knowledge/invalid/*.md- Rejected hypotheses.fpf/evidence/*.md- Evidence files.fpf/decisions/*.md- Design Rationale Record
FAQ
What does the propose-hypotheses skill do?
Execute complete FPF cycle from hypothesis generation to decision
How do I install propose-hypotheses?
Run npx skills add https://github.com/neolabhq/context-engineering-kit --skill propose-hypotheses in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/propose-hypotheses/ (personal) or .claude/skills/propose-hypotheses/ (project).
Which AI agents can use propose-hypotheses?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is propose-hypotheses safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains propose-hypotheses?
It is published by neolabhq in neolabhq/context-engineering-kit. It has 1,162 recorded installs.
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