CallFire API
REST APIs for programmable voice, SMS, IVR and calling campaigns.
At a glance
- Editor score6.4 / 10
- PricingFrom $1/mo
- Best forLow-cost calling, IVR, and voice broadcasts
- Free planNo
- Paid from$1/mo
- Inbound callingYes
- Facts checked19 Sep 2026
Where it wins
- Local numbers start at $1 per month
- Supports IVR, broadcasts, scheduling, retries and call recording
- Official SDKs cover Java, C#, JavaScript, Python and PHP
Where it doesn't
- API-only access requires development work
- No free plan is included
- No AI features are provided
Our verdict on CallFire API
CallFire API is a paid cloud communications API for businesses building voice and messaging workflows into their own applications. It supports outbound individual calls, voice broadcasts, inbound IVR, call tracking, SMS, phone-number provisioning and call recordings. REST endpoints return JSON, while webhooks connect inbound and outbound call events to application workflows. Developers can work with official SDKs for Java, C#, JavaScript, Python and PHP, making the product a fit for teams that want programmable communications rather than a standalone calling interface.
Pricing is organized by number and messaging products rather than conventional subscription tiers. The Local Numbers plan costs $1 per month, while Toll-Free costs $2 per month. Shared Short Codes and Vanity Short Codes provide SMS options, and Keywords cost $5 per month. Usage charges apply to voice and SMS, so the overall cost depends on number type, message volume and calling activity. This structure suits projects that need a low-cost number rental and usage-based communications, but buyers should plan around both recurring number charges and activity-based costs.
The API covers a broad set of workflow controls, including scheduling, retries, maximum simultaneous-call settings, call recording retrieval in MP3 format and HTTP Basic Authentication over HTTPS. Its strongest fit is for developers creating IVR flows, broadcast campaigns, tracked calls or embedded SMS and voice features. Teams seeking a focused programmable communications layer should find the feature mix relevant. It is less suitable for buyers who want a visual calling product, a conventional subscription package or built-in AI capabilities.
CallFire API pricing
All 5 CallFire API plans and prices →
CallFire API fact sheet
| Free plan | No |
|---|---|
| Paid from | $1/mo |
| Inbound calling | Yes |
| Outbound calling | Yes |
| Phone number support | Yes |
| SIP support | Not verified |
| Call recording | Yes |
| Concurrent call limit | Not verified |
| SDK languages | Java, C#, JavaScript, Python, PHP |
| Integrations | 1 integrations: Webhooks |
| Pricing | From $1/mo (source) |
| Website | developers.callfire.com |
| Facts checked | 19 Sep 2026 |
CallFire API integrations
CallFire API lists 1 integrations on its own site.
- Webhooks
Alternatives to CallFire API
- Twilio Programmable VoiceA broad voice API for calling, IVR, SIP, recording, conferencing, and SDK-based apps.—
- Vonage Voice APIA broad voice API for building PSTN, SIP, WebRTC, IVR, and AI call workflows.—
- Twilio Elastic SIP TrunkingA focused SIP-to-PSTN service with secure trunking and pay-as-you-go voice charges.2.6
See all CallFire API alternatives →
Also listed in
Used CallFire API? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used CallFire API for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
CallFire API is listed in our Voice APIs directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/callfire-api/"><img src="https://www.itechguides.com/best/badge/callfire-api.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Guides on voice APIs
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. It never changes a score or a verdict. How we rank.