Services

42 stateful mocks: 6 ready to use, 36 still in progress. 42 run in your browser, each with a live playground backed by the real mock.

Ready
Complete, checked against the vendor, and kept stable. Use it in your test suite.
Work in progress
Usable, but incomplete: operations, response shapes and options can still change between releases. Pin an exact version.

42 services

Junction

Health & labs
Ready

Stateful mock of the Junction (Vital) user API driven by its OpenAPI contract and verified by differential property tests against the Junction sandbox.

40 operations Browser CLI

Medplum

Health & labs
Ready

Stateful, portable mock of the self-hosted Medplum server (FHIR R4 REST, OAuth2 and admin API) that runs anywhere JavaScript runs, proven at parity with a real self-hosted Medplum used as the oracle.

52 operations Browser CLI

OAuth & Social Login

Identity
Ready

Portable social-login mock with Google, Apple, Microsoft, GitHub and generic OIDC profiles, private relay identities, reproducible edge cases, signed tokens and an accessible UI.

32 operations Browser CLI

PostgreSQL

Databases
Ready

Pure TypeScript in-memory PostgreSQL implementation with zero WASM/native dependencies

SQL engine Browser

SQLite

Databases
Ready

Pure TypeScript in-memory SQLite implementation with zero WASM/native dependencies

SQL engine Browser

Stripe

Payments
Ready

Stateful mock of the Stripe API (accounts by key, customers, payments, subscriptions with renewals, invoices, checkout with a hosted page, a Stripe.js stand-in, signed webhooks) at API versions 2024-06-20 and 2025-02-24.acacia, verified by differential property tests against Stripe test mode.

111 operations Browser CLI

AHA

Health & labs
In progress

Stateful mock of the AHA at-home phlebotomy partner API: HMAC-signed create-order and cancel, raw or wrapped envelopes, idempotency keys, and the order-status webhooks (Scheduled, Check Out, …) our bloodwork handler consumes.

2 operations Browser CLI

AWS Bedrock

AI & speech
In progress

Stateful, scriptable mock of AWS Bedrock Runtime (Converse, ConverseStream, InvokeModel incl. Titan embeddings, Nova Sonic bidirectional streams over h2c) and AgentCore InvokeHarness, with exact event-stream framing.

5 operations Browser CLI

AWS Polly & Transcribe

AI & speech
In progress

Stateful mock of AWS Polly (SynthesizeSpeech, StartSpeechSynthesisStream) and Transcribe (streaming over h2c, batch jobs), with exact event-stream framing and scripted transcripts.

4 operations Browser CLI

CareTalk

Health & labs
In progress

Stateful mock of CareTalk's external API: client-login tokens, GetForm definitions, SavePatientForm rounds, patient search/insert, states, free slots and appointments.

9 operations Browser CLI

Customer.io

Marketing
In progress

Stateful mock of Customer.io: Segment-compatible CDP (identify/track/batch, SDK drop-in), App API transactional email/SMS/inbox sends with an outbox, message catalog, link-click tracking, and signed reporting webhooks.

10 operations Browser CLI

Daily

Communication
In progress

Stateful mock of the Daily.co REST API: rooms, presence, eject, meeting tokens (minted and self-signed HS256, verified and decodable), and transcription/recording webhooks with transcripts written to S3.

8 operations Browser CLI

EasyPost

Maps & logistics
In progress

Stateful mock of the EasyPost trackers API: create/re-use trackers, EasyPost's test tracking codes, admin status transitions and EasyPost's error envelope.

3 operations Browser CLI

Edamam

Health & labs
In progress

Stateful mock of the Edamam APIs our apps call: food-database parser, nutrients and image analysis, nutrition analysis, recipe search v2, meal-planner select and shopping lists, over a built-in food and recipe corpus.

10 operations Browser CLI

FirstPromoter

Marketing
In progress

Stateful mock of the FirstPromoter v2 API: promoters (adopt-before-create by cust_id), signup tracking by tid / promoter_id / ref token, iframe login, archive, and Basic-auth lead_becomes_referral webhooks.

7 operations Browser CLI

Flex

Payments
In progress

Stateful mock of the Flex HSA/FSA payments API: products (recorded catalog corpus), checkout sessions in payment, off-session and setup modes, customers, setup intents, refunds, the hosted checkout page, and Svix-signed webhooks.

13 operations Browser CLI

Formbricks

Productivity
In progress

Stateful mock of Formbricks (Geviti fork): client environment state seeded from our production survey clone, response creation with the fork's validation errors, the v1 management API, the widget script, and responseFinished webhooks.

8 operations Browser CLI

Fullscript

Health & labs
In progress

Stateful mock of the Fullscript lab-ordering API: per-practitioner OAuth, clinic, session grants, forward-only lab orders with results, lab-order events, expiring result PDFs, and Fullscript-Signature webhooks.

10 operations Browser CLI

Gene by Gene

Health & labs
In progress

Stateful mock of Gene by Gene's Nucleus API v2 and auth host: tokens with credential blocking, catalog, shipping quotes, orders, kits, demographics, three-layer cancel, results with presigned downloads and S3 writes, subscriptions, and GxG-signed webhooks.

30 operations Browser CLI

Google Calendar

Productivity
In progress

Stateful mock of the Google Calendar v3 API and Google OAuth our EMR calls: events list/insert/update/delete/watch, channels.stop, calendarList/calendars, token exchange/refresh/revoke and userinfo, with signed-by-header push notifications.

12 operations Browser CLI

Google Maps

Maps & logistics
In progress

Mock of Google Places Autocomplete / Details / Find Place, the Geocoding API and a Maps JavaScript (places) shim, over a QA address corpus, with Google's status codes and fault presets.

5 operations Browser CLI

Healthie

Health & labs
In progress

Stateful mock of the Healthie GraphQL API (legacy surface): signIn, users, currentUser, updateUser/updateClient (incl. multipart avatar), locations, documents and folders with served downloads, form answers, offerings, billing items, and the IP-allowlisted status webhooks.

2 operations Browser CLI

Intercom

Communication
In progress

Stateful mock of the Intercom REST API 2.11: contacts (search, create with 409 on duplicates, update, get), conversations (create with Idempotency-Key, reply as JSON or multipart, close/open, get, cursor search), admins, and X-Hub-Signature-signed admin reply/close/open webhooks.

12 operations Browser CLI

Klaviyo

Marketing
In progress

Stateful mock of the Klaviyo events API: JSON:API event create (Ordered Product, Placed Order), event reads, unique_id dedupe, JSON:API errors and an outbox.

3 operations Browser CLI

LlamaCloud

AI & speech
In progress

Stateful mock of the LlamaCloud platform API: project and pipeline lookup, pipeline documents, and deterministic (scripted or term-overlap) retrieval, verified against the official llama_cloud_services SDK.

10 operations Browser CLI

Mailosaur

Communication
In progress

Stateful mock of the Mailosaur email/SMS testing API (messages search, get, delete, long-poll) with an HTTP ingest so other mocks can drop mail in (Mockingbird service contract).

8 operations Browser CLI

Makor CPG

Health & labs
In progress

Stateful mock of the legacy Makor AI (CPG) API: care plans, plus-user, bloodwork webhook, subscriptions, Wholescripts orders, AI patient summaries and async-review scripts (processing → complete on the mock clock), with permissive CORS for browser-direct calls.

11 operations Browser CLI

OpenTelemetry

Observability
In progress

Stateful mock of an OTLP/HTTP collector (JSON and protobuf traces and logs) and the OpenObserve search API over the same store.

7 operations Browser CLI

Optimal DX

Health & labs
In progress

Stateful mock of the (retired) Optimal DX partner API: patients, partner links, HL7 and structured lab imports, Functional Health Reports (JSON/PDF), webhook registrations, and signed PatientTest webhooks.

15 operations Browser CLI

Payload CMS

Productivity
In progress

Stateful mock of the Payload CMS collection REST API: paginated finds with a where-query subset, find by id, a seeded marketing collection and admin-editable documents.

2 operations Browser CLI

Persona

Identity
In progress

Stateful mock of the Persona identity-verification API: inquiry create, list (reusable lookup), get, a hosted flow page, admin lifecycle transitions, and Persona-Signature webhooks.

5 operations Browser CLI

Pharmetika

Pharmacy
In progress

Stateful mock of the Pharmetika compounding-pharmacy provider portal: clinics, patients, medication-order validate / EPCS prepare / submit / lookup, the v7 cancel, the medication-template catalog, and status webhooks.

9 operations Browser CLI

Plane

Productivity
In progress

Stateful mock of the Plane REST API v1: cursor-paginated work items, comments, links, states and labels, with Plane's rate limit and error shapes.

11 operations Browser CLI

Portal Agent

Pharmacy
In progress

Stateful mock of our eRx portal agent (LifeFile/VPI browser runner): the fulfilment job endpoint with strict response rules, a job store, fault presets, and x-internal-key callbacks.

1 operations Browser CLI

PostHog

Observability
In progress

Stateful mock of PostHog: /flags v2 and legacy /decide evaluation with per-test flag, variant and payload control, remote config, gzip/base64 capture (/batch/, /e/, /i/v0/e/), recordings intake, and the feature-flag management and HogQL API slice.

16 operations Browser CLI

Prism Labs

Health & labs
In progress

Stateful mock of the Prism Labs body-scan API: subjects, scans, presigned capture upload, processing stages to READY, and deterministic body-composition, measurement, health-report and asset results.

11 operations Browser CLI

Resend

Communication
In progress

Stateful mock of the Resend email API (send with idempotency, received emails, attachments) with an outbox and Svix-signed inbound webhooks (Mockingbird service contract).

5 operations Browser CLI

RxVortex

Pharmacy
In progress

Stateful mock of the RxVortex (Strive) pharmacy API: OAuth token, order submit, status, cancel, recovery by sender order id, preset catalog, and signed status webhooks.

5 operations Browser CLI

Slack

Communication
In progress

Stateful mock of Slack incoming webhooks and the Web API (chat.postMessage and friends) with an outbox of every alert the app sent.

20 operations Browser CLI

Twilio

Communication
In progress

Stateful mock of Twilio Verify, Lookup v2, Messaging and Recordings on one port, with signed inbound SMS and voice webhooks (Mockingbird service contract).

10 operations Browser CLI

VPI

Pharmacy
In progress

Stateful mock of the VPI compounding pharmacy API: JWT authentication, products, clinic, patients, providers, saveNewPrescription drafts and the three paged prescription status lists.

18 operations Browser CLI

Wholescripts

Pharmacy
In progress

Stateful mock of the Wholescripts supplement fulfilment API: product and private-label catalogs, order submit, status polling and cancel, with admin status transitions.

5 operations Browser CLI
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