hypothesis-placement-tournament

hypothesis-placement-tournament is a skill for Claude Code, Codex from panjose/Co-Scientist. It costs 20 tokens per session (394 once invoked), scanned A, original, Apache-2.0.

A review step that compares one research hypothesis with another in a placement tournament. A hypothesis is a proposed explanation that can be tested.

In plain words
What is it for?
Ranking research hypotheses by explanatory value, underlying mechanism, feasibility, and testability.
Why use it?
It helps choose which of two reviewed explanations is more useful, workable, and testable instead of treating them as equally good.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Ranking research hypotheses by explanatory value, underlying mechanism, feasibility, and testability.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/panjose/co-scientist/hypothesis-placement-tournament
Install

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.

Any agent
npx skills add panjose/Co-Scientist --skill hypothesis-placement-tournament
Clone the repo
git clone --depth 1 https://github.com/panjose/Co-Scientist

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for hypothesis-placement-tournament

README.md
[![agentmods](https://agentmods.dev/badge/skills/panjose/co-scientist/hypothesis-placement-tournament/github.svg)](https://agentmods.dev/skills/panjose/co-scientist/hypothesis-placement-tournament)
Your own site
<a href="https://agentmods.dev/skills/panjose/co-scientist/hypothesis-placement-tournament"><img src="https://agentmods.dev/badge/skills/panjose/co-scientist/hypothesis-placement-tournament/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.

agentmods 80×15 button for hypothesis-placement-tournament

Your own site · 80×15
<a href="https://agentmods.dev/skills/panjose/co-scientist/hypothesis-placement-tournament"><img src="https://agentmods.dev/badge/skills/panjose/co-scientist/hypothesis-placement-tournament.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 394 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00020 $0.00394
Opus 5 $0.00010 $0.00197
Sonnet 5 $0.00004 $0.00079
Haiku 4.5 $0.00002 $0.00039

Measured 11d ago against content hash 889179f705b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

hypothesis-placement-tournament 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 11d 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.

skills/hypothesis-placement-tournament/SKILL.md · 55 lines

What it actually says

hypothesis-placement-tournament

Goal:

  • Judge one placement-tournament matchup between a candidate hypothesis and one opponent.

Inputs:

  • research_plan/RESEARCH_PLAN.json
  • two hypotheses/<id>/HYPOTHESIS.json artifacts with completed review bundles

Outputs:

  • one TournamentMatchContract result for a placement tournament

Context Loading:

  • Open skills/shared-references/schema-index.md.
  • Read packages/agent_contracts/ranking.py and confirm the exact TournamentMatchContract shape before emitting the placement result.
  • Read research_plan/RESEARCH_PLAN.json.
  • Read both hypotheses and their review bundles.
  • Confirm that the match strategy is placement_tournament.

Execution Prompt Contract:

  • System Intent:
    • You are making one single-turn comparative judgment between two reviewed hypotheses.
  • Required Reasoning Focus:
    • Compare explanatory power, mechanistic quality, feasibility, and testability against the active research goal.
    • Prefer the hypothesis that would be more valuable to keep in the frontier.
  • Do Not Do:
    • Do not return a tie.
    • Do not ignore major review failures.
  • Output Shape:
    • Emit one TournamentMatchContract.
    • match_strategy: placement_tournament
    • winner_id: one of the two hypothesis IDs
    • reasoning: concise but specific

Execution Steps:

  1. Open skills/shared-references/schema-index.md, then read packages/agent_contracts/ranking.py before emitting the placement match artifact.
  2. Compare the two reviewed hypotheses for frontier placement.
  3. Choose exactly one winner.
  4. Emit one valid placement-tournament match result.

Completion Rule:

  • This skill is complete only when one valid placement match result has been produced with a non-empty winner and reasoning.
Changes

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.

  1. 11d ago First seen · 55 lines · 20 tokens per session scan A 889179f705b6

Subscribe to this mod's changes

hypothesis-placement-tournament is a skill published in the GitHub repository panjose/Co-Scientist (5 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 20 tokens to every session and 394 once invoked, about $0.0001 per session on Opus 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 2026-08-31.

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