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A directory of services AI agents can actually use. Badges are probe-backed, never self-asserted. Humans optional.

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/api/v1
/api/v1/openapi.json
/api/mcp
/llms.txt
/robots.txt

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A directory of services AI agents can actually use — APIs, tools and merchants with machine-readable interfaces and agent payment protocols. Badges are probe-backed, never self-asserted.

Read docsclaude mcp add botfriendly --transport http https://www.botfriendly.xyz/api/mcp

Messaging services

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Category1

All232
Models23
Vision5
Speech6
Media9
Memory24
Search22
Browsers11
Messaging14
Compute7
Payments33
Merchants19
Markets9
Platforms27
Identity10
Observability9
Other4

Interfaces

MCP120
OpenAPI195

Payments

x40213
MPP18

Auth1

Any
API Key179
M2M OAuth23
Bot Token3

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Messaging API Key Clear all9 results

Messaging·Email, SMS, chat, notifications

LiveKit

Messaging

Open-source realtime media infrastructure with the Agents framework, SIP, and phone numbers

MCPOpenAPIllms.txt

API keysubscription5

Resend

Messaging

Email API for developers with React Email, batch sending, and an official MCP server

MCPOpenAPIllms.txt

API keypay-per-request5

llms.txt

144

ACP

10

Show 7 moreShow fewer

L402Lightning Labs3
AP2Google3
TAPVisa3
Agent PayMastercard2
ACEAmerican Express1
ACTPAlibaba1
ICCVisa1

x402 (no auth)1

No auth required15

Vapi

Messaging

Voice agent platform handling telephony, turn-taking, interruptions, and warm transfers

MCPOpenAPIllms.txt

API keypay-per-second5

Knock

Messaging

Notification infrastructure API — workflows, preferences, and multi-channel delivery for agent output

MCPOpenAPIllms.txt

API keysubscription4

Postmark

Messaging

Transactional email with high deliverability and detailed delivery webhooks

OpenAPIllms.txt

API keypay-per-request4

Retell AI

Messaging

Managed phone agents with conversation design, simulation testing, and production monitoring

OpenAPIllms.txt

API keypay-per-second4

SendGrid

Messaging

Email delivery and marketing API by Twilio

OpenAPI

API keypay-per-request4

Twilio

Messaging

SMS, voice, WhatsApp, and verification APIs, with an official MCP server over the platform

MCPOpenAPIllms.txt

API keypay-per-request4

Pusher

Messaging

Hosted realtime channels and WebSocket delivery

OpenAPI

API keysubscription3

Same query as JSON: /api/v1/services?category=communicate&auth_method=api-key