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D

claude-api

by anthropics/skills · view source ↗
Autonomous Codingsee source18,325 tok/call
Usable, but review first — and it is token-heavy
Safety grade
D
47/100 · gate: review
Token cost
18,325
8.9× median
Efficacy
+33.3 pts
on older models · measured
Efficacy · actually measured (not guessed)

A real boost on standard / older models (+33.3); today's top models already have this built in.

Today's top models
This tier already does it — no lift to add · e.g. Claude 4 · GPT-4-class · DeepSeek-V3
100% without → 100% with · measured on deepseek-chat (4×5)
Standard / older models
Clearly better with it (+33.3 pts) · e.g. MiniMax-Text-01 · smaller open models
0% without → 33% with · measured on MiniMax-Text-01 (4×6)
How: we install the skill into a real model, run the same tasks with it vs without, and compare — labeled with the exact model + sample size above.

What it claims to do

|- Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting, model migration. TRIGGER — read BEFORE opening the target file; don't skip because it "looks like a one…

What we found · 8

Conflicts with · 8

xlsxshadowread, open, file
cloudflare-email-serviceshadowapi, sdk, agent
pdfshadowread, one
pptxshadowread, file
brand-guidelinesshadowanthropic
docxshadowread
internal-commsshadowclaude
mcp-builderoverlapapi, model, tool, mcp

If you have both installed, they compete for the same triggers — the top cause of an agent picking the wrong skill.

Have you installed claude-api? Scan everything you run.

One command grades every skill in your Claude Code / Codex — safety, token bloat, and conflicts, 100% locally.

npx skillmoo scan

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Grade computed 2026-07-13 · rubric static-v1. Efficacy shown only when measured on a labeled model + task suite — never invented.

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SkillMOO grade D

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Does this rating match your experience with claude-api?
Anonymous & aggregate. We watch these as a trend and re-check flagged skills — a single click never moves a grade on its own.
Independent static analysis by SkillMOO — the Consumer Reports for agent skills. Safety, token, and conflict grades are computed, not opinions. Efficacy is only ever claimed when measured. We rate & link to the source; we do not rehost skill content.