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lacuna-prior-work

lacuna-prior-work is a skill for Claude Code, Codex from tiptreesystems/lacuna-research-mcp. It costs 46 tokens per session (320 once invoked), scanned A, original, MIT.

A research workflow for finding and comparing earlier machine-learning and artificial-intelligence papers related to a proposed method, experiment, or implementation. It compares mechanisms, differences, and overlapping evaluations rather than treating a search as proof of originality.

In plain words
What is it for?
Use it for literature checks, related-work comparisons, and choosing prior methods or baselines to include in an experiment.
Why use it?
It helps identify relevant prior work and useful baselines before an experiment is designed. It also prevents unsupported claims that no similar work exists.

Skill for Claude CodeCodex

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

not rated 57repo +15 yesterday A scan 46 tokens original MIT

Good fit Use it for literature checks, related-work comparisons, and choosing prior methods or baselines to include in an experiment.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tiptreesystems/lacuna-research-mcp/lacuna-prior-work
View source ↗ tiptreesystems/lacuna-research-mcp lacuna.tiptreesystems.com
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 tiptreesystems/lacuna-research-mcp --skill lacuna-prior-work
Clone the repo
git clone --depth 1 https://github.com/tiptreesystems/lacuna-research-mcp

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 lacuna-prior-work

README.md
[![agentmods](https://agentmods.dev/badge/skills/tiptreesystems/lacuna-research-mcp/lacuna-prior-work/github.svg)](https://agentmods.dev/skills/tiptreesystems/lacuna-research-mcp/lacuna-prior-work)
Your own site
<a href="https://agentmods.dev/skills/tiptreesystems/lacuna-research-mcp/lacuna-prior-work"><img src="https://agentmods.dev/badge/skills/tiptreesystems/lacuna-research-mcp/lacuna-prior-work/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 lacuna-prior-work

Your own site · 80×15
<a href="https://agentmods.dev/skills/tiptreesystems/lacuna-research-mcp/lacuna-prior-work"><img src="https://agentmods.dev/badge/skills/tiptreesystems/lacuna-research-mcp/lacuna-prior-work.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 320 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 $0.00046 $0.00320
Opus 5.5 $0.00018 $0.00128
Sonnet 5.5 $0.00009 $0.00064
Haiku 4.5 $0.00005 $0.00032

Measured 3d ago against content hash 5cfda532f5ac, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

lacuna-prior-work 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 3d 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/lacuna-prior-work/SKILL.md · 28 lines

What it actually says

Check prior work

If Lacuna tools are unavailable, point to the setup instructions and stop the Lacuna lookup.

  1. Identify the proposed method, problem or mechanism, and claimed difference. Query only the research concepts needed; do not send private code or documents. Use search_lacuna with search_type="paper", searching by method name and by a description of the mechanism. Do not restrict dates unless the user requests a time range.
  2. When paper results are too narrow, search research directions with search_type="cluster" and use get_direction_papers on a returned direction ID to broaden the comparison.
  3. Read relevant candidates with get_paper, treating versions of one work as one contribution. Lacuna summaries are derived text; check original papers for technical claims the comparison relies on.
  4. Compare shared mechanism, meaningful differences, and evaluation overlap, with a concrete implication for the experiment, such as a baseline to include.

Report the queries, filters, and papers inspected. Missing matches do not establish novelty. Generated proposals from get_hypothesis are not prior published evidence.

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. 3d ago First seen · 28 lines · 46 tokens per session scan A 5cfda532f5ac

Subscribe to this mod's changes

lacuna-prior-work is a skill published in the GitHub repository tiptreesystems/lacuna-research-mcp (57 stars, last pushed yesterday), licensed MIT. It adds 46 tokens to every session and 320 once invoked, about $0.0002 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 2026-11-03.

ResearchScientificai-agentsknowledge-graphliterature-searchmachine-learningmcpmcp-server
Related

lacuna-prior-work compared with skills from other repositories

lacuna-prior-work next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
lacuna-prior-worktiptreesystems/lacuna-research-mcpSkill57yesterdayMITA46Claude Code, Codex
prismdbcls/togomcpSkill212d agoMITA209Claude Code, Codex
disease-analysisdbcls/togomcpSkill212d agoMITA149Claude Code, Codex
research-article-analysisdbcls/togomcpSkill212d agoMITA147Claude Code, Codex
query-provenancedbcls/togomcpSkill212d agoMITA188Claude Code, Codex
ml_inference_optimizationLeeroo-AI/leeroopedia-mcpSkill141mo agoMITA0Claude Code, Codex
leeroopedia-mcpLeeroo-AI/leeroopedia-mcpSkill141mo agoMITA42Claude Code, Codex