Can an agent send a text message with MSG91 SMS?
Who does each step
Whether the agent handles it alone or a person has to step in.
- 01
Discover
MachineThe vendor's machine-readable docs show the agent where and how to call this job.
- 02
Access
Workaround · setupYou give the agent a key or token.
- 03
Onboard
Workaround · setupYou sign up or register a client for the agent.
- 04
Pay
Workaround · setupYou add a payment card at the vendor's checkout.
- 05
Confirm
MachineThe response or specification defines errors the agent can distinguish from success.
- 06
Sustain
Workaround · setupYou replace or revoke the agent's access when it needs to change.
- Access: handing over a key or token.
- Onboard: signing up or registering a client for the agent.
- Pay: adding a payment card.
- Sustain: renewing, replacing or revoking its access.
To remove these handoffs: support OAuth client registration so the agent can register its own client and ask for consent; provide an agent registration route, such as auth.md, a sign-up API or OAuth client registration; support payment in the request, such as x402 or MPP, so setup does not require a person to add a card; provide key management or OAuth refresh and revocation so the agent can maintain its own access.
Agent surfaces
The probe
Each request it sent and what came back; the descriptors it read, counted, with what they named.
Discover31 descriptor reads2 facts
- Found
- For agentsdocs.msg91.com/llms.txtFor agentscontrol.msg91.com
- From
- docs.msg91.com/llms.txt · docs.msg91.com/sms/send-sms
- This endpoint
- control.msg91.com/api/v5 is named by a document written for agents
Job requestPOST control.msg91.com/api/v5/flow200315 ms
- Request
- POST https://control.msg91.com/api/v5/flow
- Response
- 200 · application/json · 48 bytes
- Body
- sha256:7fc3499c8549321f8f6f7bd486590a0a704b542f36edc1fee69e5099cced4577
- Exchange
- sha256:b04d704ac4c6c36480492a4e8a5aaec73e94ab6afbe590929bbcf6d432c70420
Resource metadataGET control.msg91.com/.well-known/oauth-protected-resource/api/v5/flow404276 ms
- Request
- GET https://control.msg91.com/.well-known/oauth-protected-resource/api/v5/flow
- Response
- 404 · text/html · 146 bytes
- Body
- sha256:55f7d9e99b8e2d4e0e193b2f0275501e6d9c1ebd29cadbea6a0da48a8587e3e0
- Exchange
- sha256:f421e6c2a55986749d47a2cad4d9d8a9b8f1eb28003009557740a45d0f22a6f9
Resource metadataGET control.msg91.com/.well-known/oauth-protected-resource404291 ms
- Request
- GET https://control.msg91.com/.well-known/oauth-protected-resource
- Response
- 404 · text/html · 146 bytes
- Body
- sha256:55f7d9e99b8e2d4e0e193b2f0275501e6d9c1ebd29cadbea6a0da48a8587e3e0
- Exchange
- sha256:0ad20e2739c0775412880ffc7735894b57f5a7325b7bfbdbed4657d77946c065
Declared pageGET msg91.com/signup200169 ms
- Request
- GET https://msg91.com/signup
- Response
- 200 · text/html · 20088 bytes
- Body
- sha256:0ad967b087ab5d66dd0ce9868cd50c34201027227e8f4d99118feadef5193de7
- Exchange
- sha256:20d20d8346e6d5621017712039f2885accb693825fe16a1ae0674a8d36e32ccb
Declared pageGET control.msg91.com/signin/2001003 ms
- Request
- GET https://control.msg91.com/signin/
- Response
- 200 · text/html · 102567 bytes
- Body
- sha256:e5af85284590936da377890890b2296106274b6db457fe73cb91d33862973280
- Exchange
- sha256:7aa4b6a73975ccbb86b57280ddf85937d83aea86b9cec2b544751426c365ebcc
MSG91 on the startup-offers board
The grade’s badge
One image that keeps itself current, linking here.
[](https://sourcey.com/c/msg91/agent-readiness/msg91-sms/sms-send)Improve the report
Correct it, probe it again, or improve the path.
- Profile
- arp_01m4vt8az17hvh036wd3pzcs3f
- Projection
- sha256:0c9191acbe5327ed14bbc0a008e4a9153f7dc8a1555f768b603e944ea5d6642d
- Policy
- kind-2026-10-12.2 · sha256:b612172aad277b54461de84e006815126f2df566563954b02f4432a39cad89ac
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