Pact

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

Pact is ranked #12 of 35 in API testing tools on Inferse. It runs on API, Linux, macOS, Self-hosted, Windows. There is a free plan. A free trial is offered. Paid plans start at $115.42/mo.

Compared on API testing tools

Free plan: Yespact.io
Mock server: Yespact.io

Facts

Purpose: Pact is a code-first tool for testing HTTP and message integrations with contract tests.docs.pact.io · 3 Oct 2026
How contracts work: Pact contracts are generated by automated consumer tests and describe concrete interactions between consumer and provider applications.docs.pact.io · 3 Oct 2026
Testing workflow: Pact lets teams test consumer and provider applications in isolation without deploying the entire system.docs.pact.io · 3 Oct 2026
Languages: The Pact site lists implementations for JavaScript, Java and JVM languages, .NET, Go, Python, Swift and Objective-C, Ruby, PHP, and C++.pact.io · 3 Oct 2026
Broker: The open-source Pact Broker shares contracts and verification results; it can be self-hosted and administered by the user.docs.pact.io · 3 Oct 2026
CI/CD: The Pact Broker supports CI/CD workflows, including compatibility checks that indicate whether application versions can be deployed together.docs.pact.io · 3 Oct 2026
Integrations: Pact documentation provides recipes for scenarios and tools including GraphQL, Cypress, Jest, Mocha, Kafka, AWS Lambda, and API Gateway.docs.pact.io · 3 Oct 2026
Messaging: Pact abstracts message testing from the queueing technology and documents examples involving ActiveMQ, RabbitMQ, SNS, SQS, Kafka, and Kinesis.docs.pact.io · 3 Oct 2026
Intended users: Pact is most valuable when teams control development of both consumer and provider applications, and is generally implemented by developers.docs.pact.io · 3 Oct 2026
Not suitable for: Pact documentation says it is not intended for performance or load testing, provider functional testing, or APIs whose many consumers cannot maintain direct relationships with the provider team.docs.pact.io · 3 Oct 2026
Security distinction: The Pact site describes SSO, API tokens, audit trails, and secrets as premium PactFlow features rather than core Pact features.pact.io · 3 Oct 2026
Support: The Pact site links to documentation, a Slack community, and partners for support.pact.io · 3 Oct 2026
Purpose: Pact is a code-first tool for testing HTTP and message integrations with contract tests.docs.pact.io · 4 Oct 2026
Testing model: Pact contract tests check integrations in isolation against a shared understanding documented in a contract.docs.pact.io · 4 Oct 2026
Language support: Pact implementations are available in more than 10 languages, including Java, Rust, JavaScript, .NET, Go, PHP, Python, Ruby, Swift/Objective-C, Scala and C++.docs.pact.io · 4 Oct 2026
CLI tools: The Pact CLI includes mock and stub servers, a provider verifier, a broker client and a plugin CLI.docs.pact.io · 4 Oct 2026
Protocol support: The Pact verifier supports HTTP, asynchronous and synchronous messages, and Pact plugins; plugins include support for gRPC, Avro and CSV.docs.pact.io · 4 Oct 2026
Platforms: Pact CLI installation scripts support Linux, macOS and Windows on ARM64 and AMD64.docs.pact.io · 4 Oct 2026
Broker role: The Pact Broker shares consumer-driven contracts and verification results, and can report which application versions can be deployed safely together.docs.pact.io · 4 Oct 2026
Integrations: PactFlow's Bi-Directional Contract Testing integrates with OpenAPI and lists Cypress, Postman and Wiremock as tools for writing contracts.pactflow.io · 4 Oct 2026
Security: PactFlow says it encrypts data at rest with AES-256, enforces TLS 1.2 or higher, and stores data and backups in AWS Sydney.pactflow.io · 4 Oct 2026
Security administration: PactFlow's Enterprise plan lists SAML single sign-on and role-based access management, and the security page describes SCIM support for automated user, group and role provisioning and deprovisioning.pactflow.io · 4 Oct 2026
Support: Pact's official site directs users to documentation, a Slack channel and partner support; PactFlow plans list email support for Team and dedicated account and customer care for Enterprise.pact.io · 4 Oct 2026
Notable limit: The free Pact Broker is self-hosted, so its operator is responsible for security, maintenance and upgrades.docs.pact.io · 4 Oct 2026
Intended users: PactFlow describes its service as supporting teams building microservices, messaging systems or cloud-native systems.pactflow.io · 4 Oct 2026