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yc-reader

Look up Y Combinator companies, batches, and startup ecosystem data using the yc-oss API (read-only). Use this skill whenever the user wants to research YC-backed startups, find companies in a specific batch or industry, check which YC companies are hiring, explore top YC companies, or analyze startup trends by sector or tag. Triggers include: "YC companies in fintech", "who's in the latest YC batch", "YC startups hiring", "top Y Combinator companies", "find YC companies tagged AI", "W25 batch", "S24 companies", "YC stats", "Y Combinator portfolio", "startup research", "which YC companies do X", "venture research on YC", any mention of Y Combinator, YC batch, or YC-backed companies in the context of startup research, venture analysis, or market intelligence. This is a read-only data source — the API is a static JSON dataset updated daily.

75

Quality

93%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

86%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

A well-structured, highly actionable read-only skill body: clear stepwise workflow, executable curl+jq examples, a thorough diagnostics table, and appropriate one-level-deep reference split. Only minor conciseness and validation-checkpoint gaps keep it from top marks.

Suggestions

Trim minor over-explanation in Step 1 (e.g., drop 'Both are pre-installed on most systems' and the jq-unavailable fallback sentence) to tighten conciseness toward 5.

Add an explicit response-validity checkpoint in Step 3 (e.g., verify the curl output is valid JSON / check HTTP status before piping to jq) to strengthen workflow_clarity.

Consider noting rate-limiting or caching guidance for the large companies/all.json endpoint to reduce repeated heavy fetches during research sessions.

DimensionReasoningScore

Conciseness

Mostly lean and table-driven without explaining concepts Claude already knows, but has minor over-explanation ('Both are pre-installed on most systems', the jq-unavailable fallback note, and auth/read-only restated). Fits the 4 anchor; not 5 because a few phrases could be trimmed.

4 / 5

Actionability

Copy-paste ready `curl -s … | jq …` commands covering fetch, count, filter, field extraction, and case-insensitive search, plus a concrete endpoint mapping table and a jq-filter reference table. Matches the 5 anchor.

5 / 5

Workflow Clarity

Clear 5-step sequence (prerequisites → identify need → execute → present → diagnostics) with a prerequisite validation checkpoint and a diagnostics error→cause→fix feedback loop. Fits 4; not 5 because validation is limited to prerequisites and there is no explicit response-validity checkpoint.

4 / 5

Progressive Disclosure

Overview lives in SKILL.md while the full schema/endpoint detail is split into a real, verified one-level reference (references/api_reference.md, 285 lines), clearly signaled both inline ('See references/api_reference.md for full details') and via a dedicated Reference Files section.

5 / 5

Total

18

/

20

Passed

Description

100%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

An excellent description: third-person voice, concrete capabilities, comprehensive natural trigger terms, explicit what-and-when guidance, and a distinct niche with low conflict risk. Also usefully flags the read-only nature and daily-updated static dataset.

DimensionReasoningScore

Specificity

Lists multiple concrete actions — 'Look up Y Combinator companies, batches, and startup ecosystem data', 'find companies in a specific batch or industry', 'check which YC companies are hiring', 'explore top YC companies', 'analyze startup trends by sector or tag' — with comprehensive coverage, matching the 5 anchor.

5 / 5

Completeness

Explicitly answers 'what' (look up companies, batches, ecosystem data via the yc-oss API) and 'when' ('Use this skill whenever the user wants to research… Triggers include…') with concrete trigger phrases.

5 / 5

Trigger Term Quality

Comprehensive natural trigger phrases including synonyms ('YC'/'Y Combinator'), batch short forms ('W25 batch', 'S24 companies'), and many user-phrasings ('YC companies in fintech', 'who's in the latest YC batch', 'YC startups hiring', 'YC stats', 'Y Combinator portfolio').

5 / 5

Distinctiveness Conflict Risk

Clear YC-only niche with distinct triggers (Y Combinator, YC batch, YC-backed companies) and minimal overlap risk with other skills.

5 / 5

Total

20

/

20

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
himself65/finance-skills
Reviewed

Table of Contents

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