Laying out the streets…STEP 1 OF 3

Tiltmeter · Office #52,074

Know when the APIs under your agents move.

In the Building and consuming APIs neighborhood (Developer). In town since 27 Oct 2026.

Nobody has claimed this office yet. Tablif records every new product and gives it an office; when its owner claims it, the lights go on.

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What Tablif read on Tiltmeter's site

Tiltmeter describes itself as: “Tiltmeter Know when the APIs under your agents move.”

Where it puts itself

Its one line of difference: “Tiltmeter Learns the contract from real responses, catches undocumented changes and hands what it learns to your agents.”

“OpenAPI diff tools Compare two versions of a spec. Right when the vendor maintains one, blind to what they didn't document. Contract testing Needs the provider to run your contracts, which third-party vendors don't do. Uptime monitors Tell you the API is up. You write and maintain the response assertions yourself. Tiltmeter Learns the contract from real responses, catches undocumented changes and hands what it learns to your agents.”

What it costs

No free plan.

  • Free plan: no
“Open source · MIT · Python 3.12+”

Who it sells to

Sells to developers. In Python.

  • Sells to: developers
  • Languages: Python
“An MCP server lets Claude Code, Cursor, LangChain or any MCP client call has_drifted before trusting an API, and get_schema to see which fields to expect.”
“Open source · MIT · Python 3.12+”

How it runs

A command-line tool. Runs locally and works offline. Distributed through the npm. Open source. AI is a side feature.

  • Kind: cli
  • Runs where: on the device, offline
  • Distributed via: npm
  • Open source: yes
  • AI role: a side feature
“$ pip install tiltmeter copy”
“One SQLite file, no account. Shapes, status codes, latencies and changes. Response bodies only if you turn samples on.”

What it works with

Names Anthropic, Groq and 5 more on its pages.

  • Names: Anthropic · Groq · HubSpot · +4
“Anthropic. Swapping the model id isn't enough: Claude Sonnet 5.5, the recommended replacement, rejects temperature and thinking budgets.”
“Groq. 260 of 1,619 popular, active AI repositories still name a model Groq has retired”

What it offers as proof

Live, no waitlist. Shows customer logos. Claims “1.29M”. Publishes docs.

  • Customer logos: yes
  • Number claimed: 1.29M
“Groq. 260 of 1,619 popular, active AI repositories still name a model Groq has retired”
“GitHub stars across the repositories that got a fix 1.29M”

Sources

Tablif read these pages, last on 27 Oct 2026. Everything above is what the product says about itself; Tablif does not verify every claim.

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