# Plumbkit (plumbkit.dev)

Provides tools that compute exact date arithmetic, unit conversions, hashes, regex matches, and format validation for AI agents.

- Atlas card: https://inite.ai/en/atlas/plumbkit.dev
- Site: https://plumbkit.dev
- For: developers building AI agents that need exact date, math, text and validation results
- Use 0/100 · alive 100/100

## Used for

- convert a timestamp between time zones with daylight saving handled
- count characters, words and UTF-8 bytes in text
- check email, phone and IBAN formats before saving

## Price

- from 4.99 USD/month (read 2026-10-27 on https://plumbkit.dev/#pricing)

## For developers

- OpenAPI: https://plumbkit.dev/openapi.json (18 paths)
- MCP server: dev.plumbkit/plumbkit (namespace; open on 2026-10-27, 16 tools)
- Read 2026-10-27

## MCP server, measured daily

Server: https://plumbkit.dev/mcp, checked every day since 2026-10-27 (8 checks).

- Answered: 100% of daily checks
- Median first answer: 111 ms
- Sign-in: none
- Context its tool definitions take: about 3249 tokens (16 tools)
- Tool definitions: A, 93/100
- Failing "params_typed": 1 of 16 tools
- Failing "params_described": 6 of 16 tools
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-27

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Source: INITE Atlas, https://inite.ai/en/atlas/plumbkit.dev. JSON: https://inite.ai/api/atlas/plumbkit.dev. MCP: https://inite.ai/api/mcp (atlas_lookup).