Claude Code Skills Marketplace is a collection and marketplace of skills, plugins, agents, and instructions that extend Claude Code with specialized development workflows. It is for developers who want to install existing workflows or create, validate, and package their own Claude Code skills.
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.
npx skills add daymade/claude-code-skills --skill prior-work-retrievalgit clone --depth 1 https://github.com/daymade/claude-code-skillsWrote 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/skills/daymade/claude-code-skills/prior-work-retrieval)<a href="https://agentmods.dev/skills/daymade/claude-code-skills/prior-work-retrieval"><img src="https://agentmods.dev/badge/skills/daymade/claude-code-skills/prior-work-retrieval/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/skills/daymade/claude-code-skills/prior-work-retrieval"><img src="https://agentmods.dev/badge/skills/daymade/claude-code-skills/prior-work-retrieval.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00099 | $0.05682 |
| Opus 5.5 | $0.00040 | $0.02273 |
| Sonnet 5.5 | $0.00020 | $0.01136 |
| Haiku 4.5 | $0.00010 | $0.00568 |
Grade A, and why
prior-work-retrieval 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 466 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Prior Work Retrieval
Run this before substantial production only when the trigger above is present. Read-only current-state checks stay direct unless the user asks for history. Its job is not to generate another summary. Its job is to answer: what already exists, which source is current, what should be reused, and what remains genuinely new?
Not for: current-file inspection, ordinary bug fixes, mechanical verification, or a task merely because the final answer happens to be a report/summary. A mention of current/现有 tests, README, files, implementation, behavior, or validation is not by itself a prior-work request. Do not infer the trigger merely because new work might duplicate something — that risk alone does not make a request explicit.
Completion contract
A retrieval pass is complete only when all conditions below are true:
- The task's real business outcome is written as one sentence.
- Every relevant carrier declared in the manifest reports
searched,manual_completed, or an explicit failure/coverage gap. - Candidate claims are opened at their original path or record, not accepted from a search snippet alone.
- Each adopted item has a
reuseoradaptdecision and a reason tied to the current task. If nothing is adopted, the receipt carries a concreteno_reuse_reason. scripts/prior_work.py checkaccepts the receipt for this session.
retrieved is not verified; verified is not reused. Keep those states
separate so “I searched” cannot impersonate “I used our best prior work.”
Workflow
1. Read the local operating context first
Before querying, read the current project's AGENTS.md/CLAUDE.md, navigation
index, and any North Star/current-decision file they name. Historical material
cannot override a newer explicit decision.
2. Validate the explicit source manifest
The manifest is the only discovery scope. No directory exists merely because a convention says it should. Validate the selected manifest:
What ships with it
15 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- evals/evals.json 5.7 KB
- references/source-manifest.md 4.1 KB
- references/visual-result-reuse.md 2.5 KB
- scripts/prior_work_hook.py 60 KB runs code
- scripts/prior_work.py 76 KB runs code
- scripts/prior-work-retrieval.sh 1.0 KB runs code
- scripts/surface_version.py 1.1 KB runs code
- scripts/verify_artifact.py 8.2 KB runs code
- tests/fixtures/manifest.json 344 B
- tests/test_current_execution.py 21 KB runs code
- tests/test_prior_work_hook.py 81 KB runs code
- tests/test_prior_work.py 36 KB runs code
- tests/test_source_freshness.py 16 KB runs code
- tests/test_surface_version.py 2.1 KB runs code
- tests/test_verify_artifact.py 6.7 KB runs code
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.
- yesterday Changed · +6 lines 35bb0934edf9
- 5d ago Changed · +1 lines 8910b9eec63f
- 7d ago Changed · +9 lines 1860e1f53a40
- 8d ago Changed · +10 lines e069b5ef9625
- 14d ago Changed · +21 lines 3f9996709df7
- 17d ago Changed · +23 lines a2447be948bf
- 18d ago Changed · +27 lines 63a2d2edbe1d
- 29d ago Changed · +4 lines bf2731496ec6
- 1mo ago Changed f800f448d39d
- 1mo ago First seen · 365 lines · 99 tokens per session scan A 3623ba63a562
prior-work-retrieval is a skill published in the GitHub repository daymade/claude-code-skills (1,516 stars, last pushed yesterday), licensed MIT. It adds 99 tokens to every session and 5,682 once invoked, about $0.0004 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 2026-08-30.
prior-work-retrieval compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| prior-work-retrievaldaymade/claude-code-skills | Skill | 1.5k | yesterday | MIT | A | 99 | Claude Code |
| knowledge-ingestopenclaw/openclaw | Skill | 394k | yesterday | MIT | A | 80 | Claude Code, Codex |
| mem0-oss-to-platformmem0ai/mem0 | Skill | 68k | 2d ago | Apache-2.0 | A | 217 | Claude Code, Codex |
| forgetasgeirtj/system_prompts_leaks | Skill | 71k | 2d ago | CC0-1.0 | A | 74 | Claude Code, Codex |
| Cortexdanielmiessler/LifeOS | Skill | 20k | yesterday | MIT | A | 184 | Claude Code |
| memoryopensquilla/opensquilla | Skill | 7.1k | 6d ago | Apache-2.0 | A | 44 | Claude Code, Codex |
| ha-data-storesshiwenwen/hope-agent | Skill | 1.9k | yesterday | MIT | A | 115 | Claude Code, Codex |