[Cotlet](https://cotlet.dev/index.md) · [Integrations](https://cotlet.dev/integrations.md) · [How it works](https://cotlet.dev/how-it-works.md) · [Use cases](https://cotlet.dev/use-cases.md) · [Security](https://cotlet.dev/security.md) · [For developers](https://cotlet.dev/for-developers.md) · [For automation agencies](https://cotlet.dev/for-agencies.md) · [Blog](https://cotlet.dev/blog.md) · [API docs](https://cotlet.dev/docs.md) · [Help center](https://cotlet.dev/help.md) · [Changelog](https://cotlet.dev/changelog.md) · [Contact](https://cotlet.dev/contact.md) · [Pricing](https://cotlet.dev/pricing.md) · [Sign up](https://cotlet.dev/signup) # ClickSend API > Every ClickSend endpoint on Cotlet: inputs, JSON Schema, cURL, Python and Node.js examples and an example response for each call. Source: https://cotlet.dev/docs/api/clicksend Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md) 15 endpoints for ClickSend, each at its own method and path, called with your API key. Open an endpoint for its inputs, examples and response. - Base URL: `https://cotlet.dev/api/v1/clicksend` - Connects with: Your own ClickSend account, the main account or a subaccount with the permissions you need (Access reporting, Access settings, Share contacts). If ClickSend asks for a 2FA code at sign-in, you enter it yourself. - Integration page: https://cotlet.dev/integrations/clicksend-api-mcp-server ## Read Return data and change nothing in the account. | Endpoint | Description | |---|---| | [`GET /contact-lists`](https://cotlet.dev/docs/api/clicksend/list_contact_lists.md) | Contact lists of the account, by name, with their IDs. | | [`GET /lists/{list_id}/contacts`](https://cotlet.dev/docs/api/clicksend/list_contacts.md) | Contacts of one list with name, phone number and email. | | [`GET /sms-histories`](https://cotlet.dev/docs/api/clicksend/list_sms_history.md) | Sent, failed and scheduled texts from SMS > History, newest first, with status, number and date. | | [`GET /messages/{message_id}/sms-message`](https://cotlet.dev/docs/api/clicksend/get_sms_message.md) | One text with the reason it failed, error code, number of parts and cost. | | [`GET /sms-campaigns`](https://cotlet.dev/docs/api/clicksend/list_sms_campaigns.md) | Campaigns from SMS > SMS Campaigns with status, send time and recipient count. | | [`GET /opt-outs`](https://cotlet.dev/docs/api/clicksend/list_opt_outs.md) | Numbers on the Opt-Out List. | | [`GET /inbound-rules`](https://cotlet.dev/docs/api/clicksend/list_inbound_rules.md) | Inbound SMS rules from Message Settings, such as the STOP rule, in the order ClickSend runs them. | ## Write Change the account. Calls marked Confirm wait for the user to approve them. | Endpoint | Description | |---|---| | [`POST /sms`](https://cotlet.dev/docs/api/clicksend/send_sms.md) (Confirm) | Send one text now or later to numbers or to a list, as Quick SMS does. | | [`POST /lists/{list_id}/sms-campaigns`](https://cotlet.dev/docs/api/clicksend/create_sms_campaign.md) (Confirm) | Send or schedule an SMS campaign to one contact list, with an opt-out. | | [`POST /scheduled-sms/cancel`](https://cotlet.dev/docs/api/clicksend/cancel_scheduled_sms.md) (Confirm) | Cancel a scheduled text or a scheduled campaign before it sends. | | [`POST /lists/{list_id}/contacts`](https://cotlet.dev/docs/api/clicksend/add_contacts.md) (Confirm) | Add contacts to a list with name, phone number and email. | | [`DELETE /lists/{list_id}/contacts/{contact_id}`](https://cotlet.dev/docs/api/clicksend/remove_contact.md) (Confirm) | Remove one contact from a list. | | [`DELETE /lists/{list_id}/duplicates`](https://cotlet.dev/docs/api/clicksend/remove_duplicates.md) (Confirm) | Remove duplicate contacts inside one list, by phone number or email. | | [`DELETE /lists/{list_id}/opted-out-contacts`](https://cotlet.dev/docs/api/clicksend/remove_opted_out_contacts.md) (Confirm) | Remove everyone on the Opt-Out List from one contact list. | | [`POST /phones/{phone_number}/opt-outs`](https://cotlet.dev/docs/api/clicksend/add_opt_out.md) (Confirm) | Add a phone number to the Opt-Out List. | --- Give your AI agents your signed-in browser. **Product:** [Integrations](https://cotlet.dev/integrations.md) · [Use cases](https://cotlet.dev/use-cases.md) · [How it works](https://cotlet.dev/how-it-works.md) · [Pricing](https://cotlet.dev/pricing.md) · [Security](https://cotlet.dev/security.md) **Resources:** [Blog](https://cotlet.dev/blog.md) · [API docs](https://cotlet.dev/docs.md) · [Help center](https://cotlet.dev/help.md) · [Changelog](https://cotlet.dev/changelog.md) · [GitHub](https://github.com/cotletdev/cotlet) **Solutions:** [For developers](https://cotlet.dev/for-developers.md) · [For automation agencies](https://cotlet.dev/for-agencies.md) **Company:** [About](https://cotlet.dev/about.md) · [AI info: company facts](https://cotlet.dev/ai-info.md) · [Contact](https://cotlet.dev/contact.md) **Legal:** [Terms of service](https://cotlet.dev/terms) · [Privacy policy](https://cotlet.dev/privacy) · [Refund policy](https://cotlet.dev/refunds) · [Acceptable use](https://cotlet.dev/acceptable-use) · [Cookie policy](https://cotlet.dev/cookies) · [DPA](https://cotlet.dev/dpa) · [Subprocessors](https://cotlet.dev/subprocessors) **Elsewhere:** [Status page](https://status.cotlet.dev) · [Cotlet on GitHub](https://github.com/cotletdev) · [Cotlet on X](https://x.com/cotletdev) · [Cotlet on LinkedIn](https://www.linkedin.com/company/cotletdev) · [Cotlet on Product Hunt](https://www.producthunt.com/products/cotlet) · [Cotlet on Crunchbase](https://www.crunchbase.com/organization/cotlet) · [Cotlet on SaaSHub](https://www.saashub.com/cotlet) Cotlet.dev is built by Bart Krawczyk and Jake Slugocki, the founders of Take Group sp. z o.o., ul. Wincentego Janasa 4, 40-855 Katowice, Poland. KRS 0000871398, NIP 6342984273, VAT EU: PL6342984273. [About us](https://cotlet.dev/about.md) Cotlet is an independent service. It is not affiliated with, endorsed by or sponsored by any of the products listed on this site. Product names are trademarks of their respective owners.