Free API sandboxes for agents and applications
Realistic simulations of popular third-party APIs, checked against each real API's live traffic, so your code and your agents get the responses they'd see in production. Every sandbox is public: send a request now, no login or API key required.
- Make simple calls against any template right from your browser — free, no signup required.
- WireMock templates are always available and easy to customize, unlike vendor sandboxes.
- AI coding agents can easily use templates as bounded services for repeatable implementation loops.
Browse API simulation templates
Anthropic
1 template
Apple
1 template
Atlassian
1 template
Auth0
1 template
Chase JPMorgan
13 templates
Financial services
Account Updater API
- Functionality
- Stored card credential updates
- Coverage
- 5 stubs
- Protocol
- REST
Financial services
Blockchain Deposit Account Balances API
- Functionality
- Deposit account balance inquiries
- Coverage
- 4 stubs
- Protocol
- REST
Financial services
Checks
- Functionality
- Check issuance, images, stop payments
- Coverage
- 10 stubs
- Protocol
- REST
Financial services
Consumer Profile Management API
- Functionality
- Consumer profile management
- Coverage
- 19 stubs
- Protocol
- REST
Financial services
Global Payments v1
- Functionality
- Payment initiation and status
- Coverage
- 14 stubs
- Protocol
- REST
Financial services
Global Payments v2
- Functionality
- Payment initiation and returns
- Coverage
- 9 stubs
- Protocol
- REST
Financial services
Concourse
- Functionality
- Payables, invoices, counterparties
- Coverage
- 27 stubs
- Protocol
- REST
Financial services
Online Payments APIs
- Functionality
- Payments, refunds, fraud checks
- Coverage
- 35 stubs
- Protocol
- REST
Financial services
Optimization & Protection APIs
- Functionality
- 3-D Secure, tokenization, reporting
- Coverage
- 49 stubs
- Protocol
- REST
Financial services
Pay by Bank
- Functionality
- Open Banking payments and payouts
- Coverage
- 14 stubs
- Protocol
- REST
Financial services
Request to Pay via QR
- Functionality
- Payment requests and QR links
- Coverage
- 16 stubs
- Protocol
- REST
Financial services
User Status Management
- Functionality
- User search and status updates
- Coverage
- 6 stubs
- Protocol
- REST
Financial services
Validation Services
- Functionality
- Account and entity validation
- Coverage
- 18 stubs
- Protocol
- REST
ElevenLabs
3 templates
AI
ElevenAPI
- Functionality
- Speech, voices, dubbing, transcription
- Coverage
- 226 stubs
- Protocol
- REST
AI
ElevenCreative
- Functionality
- Studio projects, media flows, assets
- Coverage
- 81 stubs
- Protocol
- REST
AI
Workspace
- Functionality
- Service accounts, keys, sharing, audit log
- Coverage
- 61 stubs
- Protocol
- REST
1 template
Fiserv
12 templates
Financial services
Banking Hub
- Functionality
- Accounts, parties, cards, transfers
- Coverage
- 252 stubs
- Protocol
- REST
Financial services
Card Developer
- Functionality
- Card accounts, disputes, rewards
- Coverage
- 137 stubs
- Protocol
- REST
Financial services
Ecommerce API
- Functionality
- Checkouts, disputes, payment links
- Coverage
- 62 stubs
- Protocol
- REST
Financial services
EmFi B2B API
- Functionality
- B2B payments and KYC
- Coverage
- 14 stubs
- Protocol
- REST
Financial services
EmFi BaaS API
- Functionality
- ACH transfers, cards, statements
- Coverage
- 36 stubs
- Protocol
- REST
Financial services
Issuer Solutions - Case Management
- Functionality
- Case creation, search, workflow
- Coverage
- 149 stubs
- Protocol
- REST
Financial services
Issuer Solutions - Loyalty & Rewards
- Functionality
- Loyalty programs and rewards
- Coverage
- 175 stubs
- Protocol
- REST
Financial services
Issuer Solutions - Operations Execution
- Functionality
- Issuer operations data and updates
- Coverage
- 547 stubs
- Protocol
- REST
Financial services
Issuer Solutions - Reference Data
- Functionality
- Credit bureau and transaction data
- Coverage
- 19 stubs
- Protocol
- REST
Financial services
Issuer Solutions - Sales & Product Management
- Functionality
- Debit and healthcare product data
- Coverage
- 40 stubs
- Protocol
- REST
Financial services
Issuer Solutions - SAM
- Functionality
- Suspense account management
- Coverage
- 151 stubs
- Protocol
- REST
Financial services
Omnichannel API
- Functionality
- Payments, documents, merchant boarding
- Coverage
- 72 stubs
- Protocol
- REST
GitHub
2 templates
GitLab
1 template
1 template
Google Gemini
1 template
Hugging Face
5 templates
AI
Dataset Viewer
- Functionality
- Splits, rows, search, statistics
- Coverage
- 54 stubs
- Protocol
- REST
AI
Endpoints Catalog
- Functionality
- Catalog models, recipes, one-click deploys
- Coverage
- 58 stubs
- Protocol
- REST
AI
Hub API
- Functionality
- Repos, discussions, collections, jobs
- Coverage
- 675 stubs
- Protocol
- REST
AI
Inference Endpoints
- Functionality
- Endpoint lifecycle, audit logs, networking
- Coverage
- 82 stubs
- Protocol
- REST
AI
Text Embeddings Inference
- Functionality
- Embeddings, reranking, tokenization
- Coverage
- 29 stubs
- Protocol
- REST
Microsoft Azure
4 templates
Cloud
Container Registry - Resource Manager
- Functionality
- Registry provisioning and management
- Coverage
- 67 stubs
- Protocol
- REST
Cloud
Container Registry Tasks
- Functionality
- Build tasks and runs
- Coverage
- 15 stubs
- Protocol
- REST
Cloud
Container Registry Data Plane
- Functionality
- Repositories, manifests, tags, tokens
- Coverage
- 30 stubs
- Protocol
- REST
Cloud
Azure DevOps
- Functionality
- Projects, repos, pipelines, work items
- Coverage
- 290 stubs
- Protocol
- REST
Microsoft Entra
1 template
Okta
1 template
OpenAI
1 template
PayPal
1 template
Perplexity
2 templates
Plaid
28 templates
Financial services
Accounts & Balance
- Functionality
- Accounts and real-time balances
- Coverage
- 2 stubs
- Protocol
- REST
Financial services
Assets
- Functionality
- Asset reports and audit copies
- Coverage
- 16 stubs
- Protocol
- REST
Financial services
Auth
- Functionality
- Account and routing verification
- Coverage
- 4 stubs
- Protocol
- REST
Financial services
Beacon
- Functionality
- Fraud reporting and screening
- Coverage
- 17 stubs
- Protocol
- REST
Financial services
Consent
- Functionality
- Consent event history
- Coverage
- 1 stub
- Protocol
- REST
Financial services
Consumer Report (CRA)
- Functionality
- Credit and cash flow reports
- Coverage
- 28 stubs
- Protocol
- REST
Financial services
FDX
- Functionality
- FDX recipients and webhooks
- Coverage
- 3 stubs
- Protocol
- REST
Financial services
Identity
- Functionality
- Identity data and match scores
- Coverage
- 4 stubs
- Protocol
- REST
Financial services
Identity Verification
- Functionality
- KYC checks and watchlist screening
- Coverage
- 31 stubs
- Protocol
- REST
Financial services
Income
- Functionality
- Income verification data
- Coverage
- 19 stubs
- Protocol
- REST
Financial services
Institutions
- Functionality
- Institution search and details
- Coverage
- 4 stubs
- Protocol
- REST
Financial services
Investments
- Functionality
- Holdings and investment transactions
- Coverage
- 4 stubs
- Protocol
- REST
Financial services
Issues
- Functionality
- Issue lookup and subscriptions
- Coverage
- 3 stubs
- Protocol
- REST
Financial services
Items & Webhooks
- Functionality
- Item lifecycle and webhooks
- Coverage
- 11 stubs
- Protocol
- REST
Financial services
Layer / Check Users
- Functionality
- User onboarding and item linking
- Coverage
- 18 stubs
- Protocol
- REST
Financial services
Liabilities
- Functionality
- Loan and credit liabilities
- Coverage
- 1 stub
- Protocol
- REST
Financial services
Link & Tokens
- Functionality
- Link sessions and token exchange
- Coverage
- 11 stubs
- Protocol
- REST
Financial services
Network
- Functionality
- Network status checks
- Coverage
- 2 stubs
- Protocol
- REST
Financial services
OAuth
- Functionality
- OAuth token lifecycle
- Coverage
- 4 stubs
- Protocol
- REST
Financial services
Partner
- Functionality
- Reseller customer management
- Coverage
- 8 stubs
- Protocol
- REST
Financial services
Payment Initiation
- Functionality
- Payments, consents, recipients
- Coverage
- 21 stubs
- Protocol
- REST
Financial services
Permissions Manager
- Functionality
- Connected app permissions
- Coverage
- 5 stubs
- Protocol
- REST
Financial services
Processor
- Functionality
- Account data via processor tokens
- Coverage
- 23 stubs
- Protocol
- REST
Financial services
Protect
- Functionality
- Trust scores and risk events
- Coverage
- 6 stubs
- Protocol
- REST
Financial services
Statements
- Functionality
- Bank statement retrieval
- Coverage
- 3 stubs
- Protocol
- REST
Financial services
Transactions
- Functionality
- Transactions, enrichment, recurring streams
- Coverage
- 7 stubs
- Protocol
- REST
Financial services
Transfer
- Functionality
- ACH transfers and ledger events
- Coverage
- 54 stubs
- Protocol
- REST
Financial services
Virtual Accounts
- Functionality
- E-wallets and wallet transactions
- Coverage
- 8 stubs
- Protocol
- REST
Resend
1 template
Snowflake
3 templates
Cloud
Cortex
- Functionality
- LLM inference, embeddings, search, Analyst
- Coverage
- 56 stubs
- Protocol
- REST
Cloud
Resource Management
- Functionality
- Databases, warehouses, roles, grants
- Coverage
- 1496 stubs
- Protocol
- REST
Cloud
SQL API
- Functionality
- Statements, result partitions, cancellation
- Coverage
- 20 stubs
- Protocol
- REST
Stripe
1 template
Tavily
2 templates
U.S. Bank
38 templates
Financial services
Access Online Transactions and Orders
- Functionality
- Transaction and order lookups
- Coverage
- 4 stubs
- Protocol
- REST
Financial services
Account Transfers
- Functionality
- Transfers between bank accounts
- Coverage
- 5 stubs
- Protocol
- REST
Financial services
Account Validation
- Functionality
- Account ownership and status checks
- Coverage
- 4 stubs
- Protocol
- REST
Financial services
ACH Originations
- Functionality
- ACH initiation and reversals
- Coverage
- 8 stubs
- Protocol
- REST
Financial services
Avvance Connect
- Functionality
- Embedded point-of-sale financing
- Coverage
- 13 stubs
- Protocol
- REST
Financial services
Avvance Flex
- Functionality
- Headless loan applications
- Coverage
- 18 stubs
- Protocol
- REST
Financial services
Bank Holidays
- Functionality
- Bank holiday lookups
- Coverage
- 3 stubs
- Protocol
- REST
Financial services
Bank Information
- Functionality
- Routing number validation
- Coverage
- 1 stub
- Protocol
- REST
Financial services
Card as a Service
- Functionality
- Virtual card issuing and wallets
- Coverage
- 34 stubs
- Protocol
- REST
Financial services
Check Payables
- Functionality
- Check issuance and tracking
- Coverage
- 6 stubs
- Protocol
- REST
Financial services
Corporate Account Information
- Functionality
- Balances, statements, transactions
- Coverage
- 16 stubs
- Protocol
- REST
Financial services
Corporate Credit Cards
- Functionality
- Card lifecycle and limits
- Coverage
- 28 stubs
- Protocol
- REST
Financial services
Corporate Onboarding
- Functionality
- KYC and account opening
- Coverage
- 7 stubs
- Protocol
- REST
Financial services
Corporate Statements
- Functionality
- Statement summaries and images
- Coverage
- 2 stubs
- Protocol
- REST
Financial services
Custody
- Functionality
- Holdings, trades, tax lots
- Coverage
- 6 stubs
- Protocol
- REST
Financial services
Data Toolbox
- Functionality
- FDX data sharing
- Coverage
- 17 stubs
- Protocol
- REST
Financial services
Disbursements via Zelle B2C
- Functionality
- Zelle payouts and enrollment
- Coverage
- 10 stubs
- Protocol
- REST
Financial services
Foreign Exchange
- Functionality
- FX quotes and settlement
- Coverage
- 5 stubs
- Protocol
- REST
Financial services
Freight Payment Customer Profiles
- Functionality
- SCIM user provisioning
- Coverage
- 13 stubs
- Protocol
- REST
Financial services
Freight Payment Transactions
- Functionality
- Freight invoices and shipments
- Coverage
- 13 stubs
- Protocol
- REST
Financial services
Incoming Webhooks
- Functionality
- Partner event notifications
- Coverage
- 1 stub
- Protocol
- REST
Financial services
Instant Payments
- Functionality
- Instant transfers and RFPs
- Coverage
- 7 stubs
- Protocol
- REST
Financial services
Integrated Receivables
- Functionality
- Receivables submission and reporting
- Coverage
- 3 stubs
- Protocol
- REST
Financial services
Investment Accounting
- Functionality
- Fund accounting and NAV
- Coverage
- 8 stubs
- Protocol
- REST
Financial services
One Card for Fleet
- Functionality
- Fleet drivers, vehicles, pools
- Coverage
- 21 stubs
- Protocol
- REST
Financial services
Payee Choice
- Functionality
- Payee enrollment and payments
- Coverage
- 8 stubs
- Protocol
- REST
Financial services
Payee Token Plus
- Functionality
- Payee data tokenization
- Coverage
- 7 stubs
- Protocol
- REST
Financial services
PaySmart
- Functionality
- RTP with ACH fallback
- Coverage
- 3 stubs
- Protocol
- REST
Financial services
Positive Pay
- Functionality
- Check exception decisions
- Coverage
- 8 stubs
- Protocol
- REST
Financial services
Push to Card
- Functionality
- Debit card push payments
- Coverage
- 4 stubs
- Protocol
- REST
Financial services
Virtual Account Reporting
- Functionality
- Virtual account balances and activity
- Coverage
- 5 stubs
- Protocol
- REST
Financial services
Virtual Card Payments
- Functionality
- Virtual card payments and controls
- Coverage
- 20 stubs
- Protocol
- REST
Financial services
Voyager Accounts
- Functionality
- Fleet accounts and hierarchies
- Coverage
- 24 stubs
- Protocol
- REST
Financial services
Voyager Cards
- Functionality
- Fleet card lifecycle
- Coverage
- 19 stubs
- Protocol
- REST
Financial services
Voyager Drivers
- Functionality
- Driver records and limits
- Coverage
- 11 stubs
- Protocol
- REST
Financial services
Voyager Transactions
- Functionality
- Fleet transaction search
- Coverage
- 2 stubs
- Protocol
- REST
Financial services
Voyager Vehicles
- Functionality
- Vehicle records and limits
- Coverage
- 11 stubs
- Protocol
- REST
Financial services
Wire Transfers
- Functionality
- Domestic and international wires
- Coverage
- 6 stubs
- Protocol
- REST
Walmart
2 templates
Wells Fargo
1 template
1 template
Vendor names identify APIs represented by WireMock template sources. This page does not imply vendor endorsement, certification, partnership, or official integration status.
API template library FAQ
The WireMock API template library is a public catalogue of source-backed mock API templates that teams can use as starting points for simulated environments in development, testing, demos, CI, and AI-agent workflows.
The library currently indexes 130 templates across 28 vendors, including AI providers, identity providers, commerce platforms, financial services APIs, cloud services, and developer tools.
No. The catalogue describes WireMock template sources for simulating third-party APIs. It does not imply endorsement, certification, partnership, or official status from any listed vendor.
Yes. API simulations give AI coding agents deterministic services to call while they build and test integrations, reducing dependency on live third-party sandboxes during development loops.