Skip to content

Official Support

We built Thymian to solve the hardest problems in HTTP conformance and API governance. Now we bring that expertise directly to your organization — from specification to production.

The Challenge at Scale

HTTP conformance issues rarely surface during development. They emerge in production — as incidents, not as test failures.

Infrastructure Blind Spots

Between your application and its consumers sits a chain of intermediaries — CDNs, load balancers, reverse proxies — each capable of silently altering HTTP semantics. Header rewrites, stripped encodings, and injected metadata go unnoticed by conventional testing yet directly affect reliability and security.

Specification Drift

As organizations scale, the gap between API specifications and actual protocol behavior widens. Without systematic enforcement at the HTTP layer, inconsistencies accumulate across teams and services, eroding interoperability and increasing integration costs.

Undetected Conformance Gaps

Functional and integration tests verify business logic — not protocol correctness. Violations of HTTP semantics such as incorrect status codes, missing headers, or improper content negotiation pass through every stage of the pipeline until they manifest as production incidents.

Protocol Violations with Real-World Consequences

Request Smuggling via Content-Length

🔴 Critical

When a Content-Length header does not accurately reflect the message body size, intermediaries may interpret message boundaries differently. This class of desynchronization vulnerability has been exploited in documented attacks against major platforms, enabling unauthorized access to other users' sessions.

Impact Data exfiltration, authentication bypass, cache poisoning

Cache Poisoning via Missing Vary

🟠 High

An omitted Vary header allows caching layers to serve a single cached representation regardless of request context — such as authentication state or content preferences. The result is cross-user data exposure through a mechanism that is invisible to application-level monitoring.

Impact Cross-user data exposure, session leakage, regulatory non-compliance

Incorrect Status Codes Breaking Client Logic

🟠 High

APIs that return 200 OK for failed operations or use 400 Bad Request indiscriminately prevent clients from implementing proper error handling, retry logic, and circuit breakers. Mobile apps, SDKs, and partner integrations silently degrade because they cannot distinguish transient failures from permanent errors.

Impact Broken retry logic, poor client experience, cascading failures across integrations

Redundant Data Transfer Inflating Cloud Costs

🟠 High

APIs that omit ETag or Last-Modified headers — or ignore conditional requests like If-None-Match and If-Modified-Since — force full response payloads on every request, even when the data has not changed. At scale, this multiplies bandwidth consumption, increases compute time for serialization, and drives up egress charges across CDNs and cloud regions.

Impact Excessive egress and compute costs, degraded response times, wasted infrastructure capacity

Built on Deep Protocol Expertise

We developed Thymian's RFC 9110 rule set from the ground up, systematically mapping every MUST, SHOULD, and MAY requirement to automated, actionable validation. The same rules apply consistently across design-time analysis, testing, and production monitoring. This level of protocol expertise is what we bring to your organization.

399 RFC rules implemented
15 RFC sections covered
3 Validation contexts (lint, test, analyze)
Get in Touch

Consulting Services

Hands-on guidance from the engineers who built Thymian — tailored to your architecture, your stack, and your standards.

HTTP Conformance Auditing

Deep conformance audits against RFC 9110 that uncover protocol violations in your specifications, implementations, and live traffic. You receive a prioritized findings report with RFC references, risk assessments, and remediation paths.

API Governance & Organizational Standards

Shareable rule sets packaged as npm modules — your own @your-org/api-standards — that validate at design time, catch issues before merge, and monitor production. You receive a ready-to-publish package and rollout plan.

API Design Strategy

We work with your architects to establish conformant-by-construction design patterns — versioning, error responses, content negotiation, and caching aligned with HTTP semantics. You receive design guidelines, OpenAPI templates, and automated checks.

Production Traffic Analysis

We audit recorded HTTP traffic to uncover how proxies, CDNs, and load balancers alter semantics in ways your tests never see. You receive an analysis report with infrastructure-specific recommendations.

AI-Assisted API Development

Automated conformance checks integrated into your AI-assisted development pipelines, so generated code is validated against RFC requirements before it ships. You receive a configured pipeline and integration guides.

Lifecycle & CI/CD Integration

Conformance checks at every stage: IDE validation, automated PR checks, and production monitoring. We configure your CI/CD platform and establish feedback loops that prevent regressions. You receive pipeline configs and a failure runbook.

Custom Plugin & Rule Development

Custom plugins and rules for proprietary protocols, internal conventions, or domain-specific constraints. Need non-TypeScript integration? We build remote plugins via WebSocket. You receive production-ready code and test suites.

Team Enablement

Hands-on workshops covering HTTP semantics, custom rule authoring, plugin development, and traffic analysis. You receive recordings, training materials tailored to your architecture, and a long-term reference guide.

Not Sure Where to Start?

Most engagements begin with a short call. Walk us through your API landscape and pain points — we’ll tell you which services make sense and which ones you can skip. No pitch deck, no commitment.

Schedule a Consultation

What to Expect

Every engagement follows a straightforward process — so you know exactly what you’re getting before you commit.

Discovery Call

A 30-minute conversation to understand your API landscape, pain points, and goals. No pitch deck, no commitment.

Free & no obligation

Scoped Proposal

Based on the discovery call, we deliver a written proposal with scope, timeline, deliverables, and pricing — typically within one week.

Fixed scope & timeline

Engagement

We execute the agreed scope, deliver all artifacts, and conduct a handoff session to ensure your team can maintain everything independently.

Deliverables you own

Who’s Behind Thymian

Every engagement is led directly by the engineers who designed and built Thymian — not outsourced, not delegated.

Matthias Keckl

Core Member

Drives research initiatives and engineering excellence. Bridges academic rigor with practical consulting to shape Thymian’s rule engine and validation approach.

Peter Müller

Core Member

Leads community engagement and core engineering. Focuses on developer experience, open-source collaboration, and helping teams adopt API conformance practices.

Markus Ende

Core Member

Seasoned engineer and consultant specializing in API quality. Brings deep expertise in HTTP standards and hands-on experience guiding enterprise integrations.

Andreas Tennert

Core Member

Architects the plugin system and tooling integrations. Ensures Thymian fits seamlessly into existing CI/CD pipelines and developer workflows.

Work Directly With the Core Team

  • Prevention — We designed the rule engine and know exactly how to integrate it into your CI pipeline to catch conformance issues before they ship.
  • API Governance — As the architects of the plugin system, we help you build custom rule sets and shared policies tailored to your organization.
  • Live Incidents — When production breaks, the people who wrote the analyzer and understand HTTP at the RFC level are the fastest path to a root cause.
  • After the Engagement — You keep everything: documented rule sets, pipeline configurations, training materials, and the knowledge to maintain it all independently. Optional ongoing support is available if you need it.
Schedule a Consultation
Thymian is built and maintained by qupaya technologies GmbH — based in Nuremberg, Germany.