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.

Tesser publishes 14 APIs on the APIs.io network, including Accounts API, Admin API, API Keys API, and 11 more. Tagged areas include Company, Payments, Stablecoins, Cross-Border Payments, and Fintech.

The Tesser catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Tesser’s developer surface includes documentation, API reference, getting-started guide, signup flow, support, authentication, sandbox, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub
50.8/100 developing ▬ flat Agent 61/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
14 APIs 1 MCP Servers
CompanyPaymentsStablecoinsCross-Border PaymentsFintechTreasuryBankingBlockchainComplianceMCPDeveloper Platform

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 50.8/100 · developing
Contract Quality 15.9 / 25
Developer Ergonomics 15.7 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 1.7 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 61/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/tesser: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 14

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 for all 14

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

tesser-mcp.yml

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Tesser Webhooks

ASYNCAPI

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Tesser Authentication

oauth2/http · 1 scheme

SECURITY

Tesser Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login
 Sandbox
Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference
 OpenAPI
OpenAPI

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 WellKnown
WellKnown
 AgentSkill
AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Webhooks
Webhooks
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 LinkedIn
LinkedIn

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: tesser
name: Tesser
description: 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.
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://raw.githubusercontent.com/tesser-payments/public/8ec11667adbdf3ba7ea626044483a24ba1a504f1/tesser-logo-Blue.svg
url: https://raw.githubusercontent.com/api-evangelist/tesser/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- anthemis
x-tier: profiled
x-tier-reason: has-public-api
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Payments
- Stablecoins
- Cross-Border Payments
- Fintech
- Treasury
- Banking
- Blockchain
- Compliance
- MCP
- Developer Platform
apis:
- aid: tesser:tesser-accounts-api
  name: Tesser Accounts API
  description: The Accounts API from Tesser — 5 operation(s) for accounts.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/tesser-accounts-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-admin-api
  name: Tesser Admin API
  description: The Admin API from Tesser — 1 operation(s) for admin.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - Admin
  properties:
  - type: OpenAPI
    url: openapi/tesser-admin-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-api-keys-api
  name: Tesser API Keys API
  description: The API Keys API from Tesser — 3 operation(s) for api keys.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - API Keys
  properties:
  - type: OpenAPI
    url: openapi/tesser-api-keys-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-counterparties-api
  name: Tesser Counterparties API
  description: The Counterparties API from Tesser — 2 operation(s) for counterparties.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - Counterparties
  properties:
  - type: OpenAPI
    url: openapi/tesser-counterparties-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-currencies-api
  name: Tesser Currencies API
  description: The Currencies API from Tesser — 1 operation(s) for currencies.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - Currencies
  properties:
  - type: OpenAPI
    url: openapi/tesser-currencies-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-health-api
  name: Tesser health API
  description: The health API from Tesser — 2 operation(s) for health.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - health
  properties:
  - type: OpenAPI
    url: openapi/tesser-health-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-mcp-api
  name: Tesser MCP API
  description: The MCP API from Tesser — 1 operation(s) for mcp.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - MCP
  properties:
  - type: OpenAPI
    url: openapi/tesser-mcp-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-networks-api
  name: Tesser Networks API
  description: The Networks API from Tesser — 1 operation(s) for networks.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - Networks
  properties:
  - type: OpenAPI
    url: openapi/tesser-networks-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-organizations-api
  name: Tesser Organizations API
  description: The Organizations API from Tesser — 2 operation(s) for organizations.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - Organizations
  properties:
  - type: OpenAPI
    url: openapi/tesser-organizations-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-payments-api
  name: Tesser Payments API
  description: The Payments API from Tesser — 7 operation(s) for payments.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - Payments
  properties:
  - type: OpenAPI
    url: openapi/tesser-payments-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-tenants-api
  name: Tesser Tenants API
  description: The Tenants API from Tesser — 2 operation(s) for tenants.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - Tenants
  properties:
  - type: OpenAPI
    url: openapi/tesser-tenants-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-treasury-api
  name: Tesser Treasury API
  description: The Treasury API from Tesser — 12 operation(s) for treasury.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - Treasury
  properties:
  - type: OpenAPI
    url: openapi/tesser-treasury-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-users-api
  name: Tesser Users API
  description: The Users API from Tesser — 2 operation(s) for users.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/tesser-users-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
- aid: tesser:tesser-webhooks-api
  name: Tesser webhooks API
  description: The webhooks API from Tesser — 6 operation(s) for webhooks.
  humanURL: https://docs.tesser.xyz
  baseURL: https://api.tesser.xyz
  tags:
  - webhooks
  properties:
  - type: OpenAPI
    url: openapi/tesser-webhooks-api-openapi.yml
  - type: Documentation
    url: https://docs.tesser.xyz
  - type: APIReference
    url: https://docs.tesser.xyz/api/v1/schema.json
  - type: GettingStarted
    url: https://docs.tesser.xyz/overviews/authentication
  - type: Authentication
    url: authentication/tesser-authentication.yml
common:
- type: DomainSecurity
  url: security/tesser-domain-security.yml
- type: DeveloperPortal
  url: https://docs.tesser.xyz
- type: Documentation
  url: https://docs.tesser.xyz
- type: APIReference
  url: https://docs.tesser.xyz/api/v1/schema.json
- type: GettingStarted
  url: https://docs.tesser.xyz/overviews/authentication
- type: Website
  url: https://tesser.xyz
- type: SignUp
  url: https://app.tesser.xyz
- type: Login
  url: https://app.tesser.xyz
- type: Support
  url: https://tesser.xyz/#contact
- type: TermsOfService
  url: https://tesser.xyz/legal/terms-of-service
- type: PrivacyPolicy
  url: https://tesser.xyz/legal/privacy-policy
- type: GitHubOrganization
  url: https://github.com/tesser-payments
- type: LinkedIn
  url: https://www.linkedin.com/company/tesserpayments/
- type: OpenAPI
  url: openapi/tesser-openapi-original.json
- type: LLMsTxt
  url: llms/tesser-llms.txt
- type: Authentication
  url: authentication/tesser-authentication.yml
- type: MCPServer
  url: mcp/tesser-mcp.yml
- type: WellKnown
  url: well-known/tesser-well-known.yml
- type: Packages
  url: packages/tesser-packages.yml
- type: SDKs
  url: packages/tesser-packages.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Conventions
  url: conventions/tesser-conventions.yml
- type: ErrorCatalog
  url: errors/tesser-error-codes.yml
- type: Webhooks
  url: asyncapi/tesser-webhooks.yml
- type: Sandbox
  url: sandbox/tesser-sandbox.yml
- type: Lifecycle
  url: lifecycle/tesser-lifecycle.yml
- type: Conformance
  url: conformance/tesser-conformance.yml
- type: DataModel
  url: data-model/tesser-data-model.yml
- type: Overlay
  url: overlays/tesser-openapi-overlay.yaml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 22
  pass: local-v1