Mozart Therapeutics
Mozart Therapeutics, Inc. is a privately held, clinical-stage biopharmaceutical company in Seattle, Washington, founded in 2020 to develop disease-modifying therapies for autoimmune and inflammatory disease. Its platform is built on the regulatory CD8 T cell (CD8 Treg) network — an upstream immune checkpoint that normally recognizes and eliminates the pathogenic immune cells that attack healthy tissue, and that becomes dysfunctional in autoimmune disease when inhibitory killer immunoglobulin-like receptors (KIR) block CD8 Treg activation. Rather than suppressing downstream inflammation, Mozart engineers bispecific CD8 Treg modulators intended to restore that checkpoint and re-establish long-term immune balance. Its pipeline comprises MTX-101, a KIR x CD8 bispecific antibody in Phase 1b study for type 1 diabetes, and MTX-201, a KIR x ICOS bispecific in preclinical development for inflammatory bowel disease. The company launched with a $55M Series A led by ARCH Venture Partners and Sofinnova Partners with participation from Eli Lilly, MRL Ventures Fund, Leaps by Bayer, Altitude Life Science Ventures and Alexandria Venture Investments, and later added a $25M extension including Pfizer Ventures, AbbVie Ventures, Ono Venture Investment and UPMC Enterprises. Mozart Therapeutics sells therapeutics, not software: it runs no developer program, publishes no API, SDK or machine-readable specification, and maintains no public source-code organization.
Index entry only — little beyond a description and a link, and nothing machine-readable enough for an agent to act on without a human reading the site first.
API Evangelist profiles Mozart Therapeutics the way a machine reads it — 1 machine-readable artifact, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Mozart Therapeutics scores 3.3/100 (minimal), with a separate agent-readiness read of 0/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Why this profile is thin
Mozart Therapeutics is a privately held clinical-stage biopharmaceutical company whose product is a bispecific-antibody pipeline (MTX-101, MTX-201), not software — www.mozart-tx.com is an eight-page brochure site (about, science, pipeline, news, careers, contact) with no developer, docs or API section, no robots.txt or sitemap.xml, and a real HTTP 404 on every spec path probed (/openapi.json, /swagger.json, /graphql, /llms.txt, all five /.well-known/ documents); mozart-tx.com serves wildcard DNS so api./docs./developer./mcp. resolve to the marketing site's address but no TLS service answers on them, there is no GitHub organization under any Mozart spelling, and no first-party package exists on npm or PyPI.
This is an honest zero, not a gap in our research. Mozart Therapeutics does not appear to expose an API, so there is nothing here for us to index and nothing for them to fix.
What we probed
https://www.mozart-tx.com/→ HTTP 200https://www.mozart-tx.com/openapi.json→ HTTP 404https://www.mozart-tx.com/llms.txt→ HTTP 404https://www.mozart-tx.com/robots.txt→ HTTP 404https://www.mozart-tx.com/.well-known/agent-card.json→ HTTP 404https://www.mozart-tx.com/developers/→ HTTP 404https://dev.mozart-tx.com/openapi.json→ HTTP 404https://api.github.com/search/users?q=mozart-therapeutics→ HTTP 200https://pypi.org/pypi/mozart-therapeutics/json→ HTTP 404
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-01 · rubric v0.18.0
Put this on your own site. The badge is drawn live from Mozart Therapeutics's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/mozart-therapeutics/"
title="Mozart Therapeutics on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/mozart-therapeutics.svg"
alt="Mozart Therapeutics Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/mozart-therapeutics/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/mozart-therapeutics/"
title="Mozart Therapeutics on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/mozart-therapeutics/card.svg"
alt="Mozart Therapeutics Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Mozart Therapeutics
Each block below is one kind of artifact we hold for Mozart Therapeutics. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
Security Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Mozart Therapeutics — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Access & Security 1
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Company 5
The organization behind the API
Other 3
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/mozart-therapeutics · machine-readable index on apis.io
This is an independent, third-party profile of Mozart Therapeutics, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.