GeezerVison is showing github.com — FerrowAI
Building Ferrow . Maintainer of the ferrow-toolkit : zero-dependency TypeScript libraries, one problem per library.
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Heuristic LLM prompt token count estimation with no tokenizer dependency — char/word/CJK/code aware, per-model calibration, message-array overhead, budget helpers.
TypeScript
1
Maximize Claude API token efficiency with prompt caching
TypeScript
In-memory sliding-window rate limiter
TypeScript
Extract and repair JSON from LLM text output, with a fallback option
TypeScript
Type-safe environment variable loader with schema validation, type coercion, and detailed error reporting
TypeScript
Tiny CLI micro-framework: flag parsing, subcommand routing, auto-generated help, ANSI colors, and typo suggestions. Zero runtime dependencies.
TypeScript
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Showing 10 of 102 repositories
websocket-client
Public
A reconnecting WebSocket wrapper with exponential backoff + jitter, heartbeat ping/pong, message queueing while disconnected, and an event emitter API. Bring your own WebSocket implementation.
FerrowAI/websocket-client's past year of commit activity
TypeScript
0
0
0
0
Updated Aug 15, 2026
webhook-handler
Public
Secure webhook receiver with HMAC-SHA256 verification and idempotency
FerrowAI/webhook-handler's past year of commit activity
TypeScript
0
0
0
0
Updated Aug 15, 2026
FerrowAI/version-manager's past year of commit activity
TypeScript
0
0
0
0
Updated Aug 15, 2026
uuid-v7-tools
Public
UUID v4+v7 generation, timestamp extraction, time-ordering, version detection
FerrowAI/uuid-v7-tools's past year of commit activity
TypeScript
0
MIT
0
0
0
Updated Aug 15, 2026
url-normalizer-lite
Public
URL canonicalization and normalization with tracking param stripping and equivalence checking
FerrowAI/url-normalizer-lite's past year of commit activity
TypeScript
0
MIT
0
0
0
Updated Aug 15, 2026
tool-schema-validator
Public
Validate LLM tool/function-call definitions and model-produced arguments — JSON-Schema subset checks, LLM-pitfall linting, path-precise argument errors, coercion mode. Zero runtime dependencies.
FerrowAI/tool-schema-validator's past year of commit activity
TypeScript
0
MIT
0
0
0
Updated Aug 15, 2026
token-estimator
Public
Heuristic LLM prompt token count estimation with no tokenizer dependency — char/word/CJK/code aware, per-model calibration, message-array overhead, budget helpers.
FerrowAI/token-estimator's past year of commit activity
TypeScript
1
MIT
0
0
0
Updated Aug 15, 2026
text-sanitizer
Public
Text hygiene for logs and LLM inputs: control chars, Unicode normalization, zero-width removal, homoglyph detection
FerrowAI/text-sanitizer's past year of commit activity
TypeScript
0
MIT
0
0
0
Updated Aug 15, 2026
text-diff-patch
Public
Zero-dependency Myers line diff, unified-diff hunks, fuzzy patch apply with reject reporting, word-level highlighting
FerrowAI/text-diff-patch's past year of commit activity
TypeScript
0
MIT
0
0
0
Updated Aug 15, 2026
text-chunker
Public
Boundary-respecting text chunking for RAG — sentence/paragraph/markdown-heading aware, configurable overlap, per-chunk metadata, zero runtime dependencies.
FerrowAI/text-chunker's past year of commit activity
TypeScript
0
MIT
0
0
0
Updated Aug 15, 2026
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