curated
Admin SDK API
googleadmin12 entities · 17 read operations · 25 write operations
42 operations
A tool bench for AI agents
Explore every mock MCP.
Find a service, investigate its contract, and send a tool call. See exactly what goes in and what comes back.
6,019mockable services
115,665cataloged operations
Synthetic data. Captured and projected contracts. Inspect each service’s source and limitations.
All MCP services
6,019 services · page 1 of 168curated
Apollo.io Prospecting Twin
apollo7 entities · 14 read operations · 12 write operations
26 operations
curated
Bank Operational Core Twin
banking_core18 entities · 9 read operations · 21 write operations
30 operations
curated
Calendar API
googlecalendar11 entities · 11 read operations · 27 write operations
38 operations
curated
Check Payroll Platform Twin
check7 entities · 14 read operations · 17 write operations
31 operations
curated
Datadog API
datadog26 entities · 64 read operations · 69 write operations
133 operations
curated
Email Activity (beta)
sendgrid138 entities · 154 read operations · 180 write operations
334 operations
curated
GitHub's official OpenAPI spec + Octokit extension
github400 entities · 581 read operations · 527 write operations
1,108 operations
curated
GitLab API
gitlab421 entities · 486 read operations · 622 write operations
1,108 operations
curated
Gmail API
gmail41 entities · 30 read operations · 49 write operations
79 operations
curated
Gong Revenue Intelligence Twin
gong7 entities · 13 read operations · 13 write operations
26 operations
curated
Google Chat API
googlechat9 entities · 8 read operations · 12 write operations
20 operations
curated
Google Docs API
googledocs3 entities · 2 read operations · 2 write operations
4 operations
curated
Google Drive API
googledrive40 entities · 29 read operations · 35 write operations
64 operations
curated
Google Meet API
googlemeet9 entities · 9 read operations · 2 write operations
11 operations
curated
Google Sheets API
googlesheets16 entities · 6 read operations · 12 write operations
18 operations
curated
Google Workspace Platform Twin
googleworkspace7 entities · 14 read operations · 20 write operations
34 operations
curated
Granola Meeting Notes Twin
granola4 entities · 8 read operations · 7 write operations
15 operations
curated
Healthcare Network Operational Core Twin
healthcare_core18 entities · 9 read operations · 21 write operations
30 operations
curated
Hospitality Group Operational Core Twin
hospitality_core18 entities · 9 read operations · 21 write operations
30 operations
curated
HubSpot CRM Twin
hubspot7 entities · 13 read operations · 15 write operations
28 operations
curated
Intercom API
intercom96 entities · 78 read operations · 83 write operations
161 operations
curated
Law Firm Operational Core Twin
law_firm_core60 entities · 30 read operations · 70 write operations
100 operations
curated
LinkedIn Professional Network Twin
linkedin6 entities · 12 read operations · 17 write operations
29 operations
curated
Logistics Operator Operational Core Twin
logistics_core18 entities · 9 read operations · 21 write operations
30 operations
curated
Manufacturer Operational Core Twin
manufacturing_core18 entities · 9 read operations · 21 write operations
30 operations
curated
NetSuite ERP Enterprise Twin
netsuite5 entities · 10 read operations · 20 write operations
30 operations
curated
Notion API
notion14 entities · 12 read operations · 12 write operations
24 operations
curated
Salesforce CRM domain twin (Composio-derived, REST v67 projection)
salesforce9 entities · 20 read operations · 32 write operations
52 operations
curated
Shared Records Governance Core Twin
records_governance_core5 entities · 10 read operations · 20 write operations
30 operations
curated
Slack Web API
slack61 entities · 57 read operations · 117 write operations
174 operations
curated
Stripe API
stripe203 entities · 262 read operations · 325 write operations
587 operations
curated
Trolley Payouts Twin
trolley10 entities · 20 read operations · 31 write operations
51 operations
curated
Unified.to Integrations Twin
unified6 entities · 12 read operations · 16 write operations
28 operations
curated
Unstructured Document Processing Twin
unstructured6 entities · 12 read operations · 14 write operations
26 operations
curated
Waterfall Enrichment Twin
waterfall5 entities · 11 read operations · 14 write operations
25 operations