Tvarka ATK API
A single REST API for Lithuanian eID authentication and qualified electronic signing (QES), plus validation, timestamping and long-term-validation (LTV)/archive trust services. The primary ceremonies read the Lithuanian identity card (ATK) through a physical smart-card reader or an NFC phone tap, with Smart-ID and Mobile-ID as optional server-side methods under the same request, polling, webhook and metering model. Signing produces PAdES, ASiC-E, ADOC or detached CAdES artifacts with a qualified timestamp and an advisory validation axis. eIDAS-aligned and EU-resident, operated from Lithuania by Advokato M. Kiskio kontora INVENT and Socialiniai algoritmai, UAB, and priced per successful operation with no subscription or minimum.
Solid contracts, transparent operations, and an easy start — typically complete on four or five facets with one clear soft spot.
API Evangelist profiles Tvarka ATK API the way a machine reads it — 30 machine-readable artifacts across 9 APIs, 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 — Tvarka ATK API scores 64.7/100 (strong), with a separate agent-readiness read of 54/100 (agent native). 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.
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
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How we profile Tvarka ATK API
Each block below is one kind of artifact we hold for Tvarka ATK API. 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 9
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.
Tvarka ATK API Auth API
The eID authentication ceremony (`/v1/auth/*`).
Tvarka ATK API Erasure API
The Erasure API from Tvarka ATK API — 3 operation(s) for erasure.
Tvarka ATK API LTV API
Post-signature timestamp and long-term-validation upgrades.
Tvarka ATK API Pairing API
NFC remote pairing - complete a request by tapping a card on a different device.
Tvarka ATK API Sign API
The QES signing ceremony (`/v1/sign/*`).
Tvarka ATK API Tvarka ATK API API
The Tvarka ATK API API from Tvarka ATK API — 0 operation(s) for tvarka atk api.
Tvarka ATK API Tvarka ATK QES Signing API (paid Tier Addendum) API
The Tvarka ATK QES Signing API (paid Tier Addendum) API from Tvarka ATK API — 0 operation(s) for tvarka atk qes signing api (paid tier addendum).
Tvarka ATK API Validation API
Standalone advisory validation of signed artifacts.
Tvarka ATK API Well Known API
Keys for verifying the optional `assertion` JWT.
Scroll within the panel for all 9 ·
Open Collections 10
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 COLLECTIONTvarka Atk Auth API
OPEN COLLECTIONTvarka Atk Erasure API
OPEN COLLECTIONTvarka Atk LTV API
OPEN COLLECTIONTvarka Atk Pairing API
OPEN COLLECTIONTvarka Atk Sign API
OPEN COLLECTIONTvarka ATK Tvarka ATK API API
OPEN COLLECTIONTvarka Atk Validation API
OPEN COLLECTIONTvarka Atk Well Known API
OPEN COLLECTIONScroll within the panel for all 10 ·
Arazzo Workflows 3
Real integrations are rarely a single call. Arazzo describes the multi-step sequences — auth, then create, then confirm — so both a human and an agent can follow the choreography, not just the endpoints.
Multi-step API workflows described with the Arazzo specification.
Authenticate a person with a Lithuanian eID card
The full ATK authentication ceremony - create an audience-bound request on the backend, submit the card certificate, return the card signature, and read the verified identity.
ARAZZOSign a PDF with a qualified electronic signature
The ATK signing ceremony for a PAdES container - create the request, submit the card signing certificate, return the signature, check both result axes, then download the signed ...
ARAZZOValidate, timestamp and archive an existing signed document
The three stateless trust services in sequence - validate a container, add qualified timestamps to untimestamped XAdES, upgrade PAdES B-T to B-LT, then download the output.
ARAZZOMCP 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.
tvarka-atk-api-mcp.yml
MCP SERVERPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Tvarka Atk Api Plans
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Tvarka Atk Api Rate Limits
RATE LIMITSEvent 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.
Tvarka Atk Api Webhooks
ASYNCAPISecurity Posture 3
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.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Tvarka ATK API — 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 4
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 10
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 10 ·
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 5
Authentication, authorization, and security posture
Operate 5
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/tvarka-atk-api · machine-readable index on apis.io
This is an independent, third-party profile of Tvarka ATK API, 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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