Tesser
Tesser is a New York-based stablecoin payments infrastructure company that lets licensed financial institutions, banks, fintechs, and payment service providers move money across borders instantly and compliantly on modern stablecoin rails. Its full-stack platform handles wallet provisioning, treasury management, compliance orchestration, and reconciliation, letting institutions integrate stablecoin payments in under a month. The Tesser API (OpenAPI 3.1, v1) exposes accounts, counterparties, tenants, payments, and treasury operations (deposits, withdrawals, rebalances) secured with Auth0 client-credentials JWTs, plus Ed25519-signed webhooks, first-party TypeScript and Kotlin signer SDKs, a published Model Context Protocol server, and an open-source agentic onboarding skill. Founded by Geetha Panchapakesan (ex-MoneyGram, Visa Direct, Circle); raised a $4.5M seed in October 2025 led by Castle Island Ventures with Anthemis, Strobe Ventures, and Digital Currency Group.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Tesser the way a machine reads it — 33 machine-readable artifacts across 1 API, 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 — Tesser scores 47.3/100 (developing), with a separate agent-readiness read of 44/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
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 2026-09-08 · rubric v0.20.0
Put this on your own site. The badge is drawn live from Tesser'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/tesser/"
title="Tesser on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/tesser.svg"
alt="Tesser Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/tesser/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/tesser/"
title="Tesser on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/tesser/card.svg"
alt="Tesser 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 Tesser
Each block below is one kind of artifact we hold for Tesser. 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.
APIs 14
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Tesser Accounts API
The Accounts API from Tesser — 5 operation(s) for accounts.
Tesser Admin API
The Admin API from Tesser — 1 operation(s) for admin.
Tesser API Keys API
The API Keys API from Tesser — 3 operation(s) for api keys.
Tesser Counterparties API
The Counterparties API from Tesser — 2 operation(s) for counterparties.
Tesser Currencies API
The Currencies API from Tesser — 1 operation(s) for currencies.
Tesser health API
The health API from Tesser — 2 operation(s) for health.
Tesser MCP API
The MCP API from Tesser — 1 operation(s) for mcp.
Tesser Networks API
The Networks API from Tesser — 1 operation(s) for networks.
Tesser Organizations API
The Organizations API from Tesser — 2 operation(s) for organizations.
Tesser Payments API
The Payments API from Tesser — 7 operation(s) for payments.
Tesser Tenants API
The Tenants API from Tesser — 2 operation(s) for tenants.
Tesser Treasury API
The Treasury API from Tesser — 12 operation(s) for treasury.
Tesser Users API
The Users API from Tesser — 2 operation(s) for users.
Tesser webhooks API
The webhooks API from Tesser — 6 operation(s) for webhooks.
Scroll within the panel for all 14 ·
Open Collections 15
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONTesser Accounts API
OPEN COLLECTIONTesser Accounts Admin API
OPEN COLLECTIONTesser Accounts API Keys API
OPEN COLLECTIONTesser Accounts Counterparties API
OPEN COLLECTIONTesser Accounts Currencies API
OPEN COLLECTIONTesser Accounts health API
OPEN COLLECTIONTesser Accounts MCP API
OPEN COLLECTIONTesser Accounts Networks API
OPEN COLLECTIONTesser Accounts Organizations API
OPEN COLLECTIONTesser Accounts Payments API
OPEN COLLECTIONTesser Accounts Tenants API
OPEN COLLECTIONTesser Accounts Treasury API
OPEN COLLECTIONTesser Accounts Users API
OPEN COLLECTIONTesser Accounts webhooks API
OPEN COLLECTIONScroll within the panel for all 15 ·
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
Tesser MCP Server
The Tesser MCP server exposes every public Tesser API endpoint as a tool that AI agents can discover and invoke over Streamable HTTP. It is also modeled in the OpenAPI as the PO...
MCP SERVEREvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Tesser Webhooks
ASYNCAPISecurity Posture 2
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 Tesser — 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.
Get Started 5
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/tesser · machine-readable index on apis.io
This is an independent, third-party profile of Tesser, 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.
info@apievangelist.com
·
Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and
you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.