Plumbkit
From $4.99/mo
- Is it safe? We have not read the data policy of Plumbkit yet. Read it on the official site before you upload anything.plumbkit.dev ↗
- Is it free? From $4.99/mo · pricing page, read Oct 27, 2026See ↓
- What else does this? We have not measured alternatives for this one yet. If you know one, add it below.See ↓
not read yet
Use
- For
- developers building AI agents that need exact date, math, text and validation results
- Price
- From $4.99/mopricing page, read Oct 27, 2026
- How it runs
- API
- 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
- Has an MCP server (1 in the registry)public registry →
- Publishes llms.txt, a file written for AI assistantsplumbkit.dev ↗
- MCP serverdev.plumbkit/plumbkitverified in the MCP registry
- Stateanswers, 16 toolschecked 2026-10-27
- Address to connectplumbkit.dev/mcp
- OpenAPI spec18 pathsthe spec ↗
This card as JSON, for your agent →
Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.
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betaThree tools from the Atlas for the job you describe, each with what fits and what does not.
No notes yet. What do you use Plumbkit for?
Sign in to leave a noteWhat is Plumbkit?
Provides tools that compute exact date arithmetic, unit conversions, hashes, regex matches, and format validation for AI agents.
Who is Plumbkit for?
developers building AI agents that need exact date, math, text and validation results
How much does Plumbkit cost?
Paid plans start at $4.99/mo, per Plumbkit's pricing page on 2026-10-27.
Do people use Plumbkit?
Little sign of use.
How do I cancel Plumbkit?
In its own words (terms of service, 2026-10-27): “You can cancel at any time through the billing portal linked on our website; you keep access until the end of the period you've paid for.”
Does Plumbkit give refunds?
In its own words (terms of service, 2026-10-27): “Fees are non-refundable, including for partial months, except where required by law or where we choose to issue a refund.”
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.
How we read every tool → · By INITE Atlas Desk
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