Bolna website screenshot

Bolna

Bolna is a voice AI platform for building, testing, deploying, and scaling conversational voice agents that place and receive phone calls with human-like, multilingual intelligence. The platform pairs a no-code Agent Studio with a Bearer-authenticated REST API (api.bolna.ai) covering agents, outbound and inbound calls, CSV batch campaigns, executions and transcripts, phone-number purchasing and search, SIP trunks, knowledge bases (RAG over PDFs/URLs), dispositions/extractions, providers (ASR/LLM/TTS credentials), voices, violations, and multi-tenant sub-accounts. Bolna integrates 20+ ASR, LLM, and TTS models (OpenAI, Azure, Anthropic, ElevenLabs, Deepgram) and telephony providers (Twilio, Plivo, SIP), and ships a hosted MCP server, an official Agent Skills collection, a Go CLI, and an open-source Python agent framework. Backed by Y Combinator and General Catalyst; strong focus on Indian-language (Hinglish, Hindi, Tamil, Telugu) voice agents with India data residency.

Bolna publishes 1 API on the APIs.io network. Tagged areas include Company, Ai, Voice AI, Conversational AI, and Voice Agents.

The Bolna catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Bolna’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 25 more developer resources.

46.8/100 developing ▬ flat Agent 50/100 agent ready Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
1 APIs 1 MCP Servers
CompanyAiVoice AIConversational AIVoice AgentsTelephonySpeechCall AutomationContact CenterMCP

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 46.8/100 · developing
Contract Quality 5.7 / 25
Developer Ergonomics 16.1 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 6.8 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 50/100 · agent ready
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/bolna: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Bolna Voice AI API

REST API for building and operating conversational voice AI agents — create and manage agents, place outbound calls, run CSV batch campaigns, wire inbound numbers and SIP trunks...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

bolna-mcp.yml

MCP SERVER

Rate Limits 1

Documented rate limits and quota policies.

Bolna Rate Limits

0 limits

RATE LIMITS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Bolna Webhooks

ASYNCAPI

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Bolna Authentication

http · 1 scheme

SECURITY

Bolna Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Scroll for all 7

Build 4

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 5

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 1

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: bolna
name: Bolna
description: Bolna is a voice AI platform for building, testing, deploying, and scaling conversational voice agents that place
  and receive phone calls with human-like, multilingual intelligence. The platform pairs a no-code Agent Studio with a Bearer-authenticated
  REST API (api.bolna.ai) covering agents, outbound and inbound calls, CSV batch campaigns, executions and transcripts, phone-number
  purchasing and search, SIP trunks, knowledge bases (RAG over PDFs/URLs), dispositions/extractions, providers (ASR/LLM/TTS
  credentials), voices, violations, and multi-tenant sub-accounts. Bolna integrates 20+ ASR, LLM, and TTS models (OpenAI,
  Azure, Anthropic, ElevenLabs, Deepgram) and telephony providers (Twilio, Plivo, SIP), and ships a hosted MCP server, an
  official Agent Skills collection, a Go CLI, and an open-source Python agent framework. Backed by Y Combinator and General
  Catalyst; strong focus on Indian-language (Hinglish, Hindi, Tamil, Telugu) voice agents with India data residency.
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://www.bolna.ai/logo.png
url: https://raw.githubusercontent.com/api-evangelist/bolna/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- general-catalyst
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Ai
- Voice AI
- Conversational AI
- Voice Agents
- Telephony
- Speech
- Call Automation
- Contact Center
- MCP
apis:
- name: Bolna Voice AI API
  description: REST API for building and operating conversational voice AI agents — create and manage agents, place outbound
    calls, run CSV batch campaigns, wire inbound numbers and SIP trunks, purchase/search phone numbers, retrieve call executions
    and raw logs, manage knowledge bases, dispositions, providers, voices, violations, and sub-accounts. Bearer API-key auth
    over HTTPS.
  humanURL: https://www.bolna.ai/docs/api-reference/introduction
  baseURL: https://api.bolna.ai
  tags:
  - Voice AI
  - Telephony
  - Agents
  properties:
  - type: APIReference
    url: https://www.bolna.ai/docs/api-reference/introduction
  - type: Authentication
    url: authentication/bolna-authentication.yml
  - type: Conventions
    url: conventions/bolna-conventions.yml
  - type: ErrorCatalog
    url: errors/bolna-error-codes.yml
  - type: RateLimits
    url: rate-limits/bolna-rate-limits.yml
  - type: Webhooks
    url: asyncapi/bolna-webhooks.yml
  - type: DataModel
    url: data-model/bolna-data-model.yml
  - type: Lifecycle
    url: lifecycle/bolna-lifecycle.yml
  - type: Conformance
    url: conformance/bolna-conformance.yml
common:
- type: DeveloperPortal
  url: https://platform.bolna.ai/
- type: Documentation
  url: https://www.bolna.ai/docs
- type: APIReference
  url: https://www.bolna.ai/docs/api-reference/introduction
- type: GettingStarted
  url: https://www.bolna.ai/docs/getting-started/agent-creation
- type: Support
  url: mailto:support@bolna.ai
- type: Blog
  url: https://blog.bolna.ai
- type: GitHubOrganization
  url: https://github.com/bolna-ai
- type: Pricing
  url: https://www.bolna.ai/pricing
- type: SignUp
  url: https://platform.bolna.ai/
- type: Login
  url: https://platform.bolna.ai/login
- type: TermsOfService
  url: https://www.bolna.ai/terms-of-service
- type: PrivacyPolicy
  url: https://www.bolna.ai/privacy-policy
- type: StatusPage
  url: https://status.bolna.ai
- type: ChangeLog
  url: https://www.bolna.ai/docs/changelog
- type: MCPServer
  url: mcp/bolna-mcp.yml
- type: LLMsTxt
  url: llms/bolna-llms.txt
- type: Packages
  url: packages/bolna-packages.yml
- type: SDKs
  url: packages/bolna-packages.yml
- type: CLI
  url: cli/bolna-cli.yml
- type: Components
  url: components/bolna-components.yml
- type: Authentication
  url: authentication/bolna-authentication.yml
- type: Conventions
  url: conventions/bolna-conventions.yml
- type: ErrorCatalog
  url: errors/bolna-error-codes.yml
- type: RateLimits
  url: rate-limits/bolna-rate-limits.yml
- type: Lifecycle
  url: lifecycle/bolna-lifecycle.yml
- type: Deprecation
  url: lifecycle/bolna-lifecycle.yml
- type: Webhooks
  url: asyncapi/bolna-webhooks.yml
- type: Conformance
  url: conformance/bolna-conformance.yml
- type: DataModel
  url: data-model/bolna-data-model.yml
- type: WellKnown
  url: well-known/bolna-well-known.yml
- type: DomainSecurity
  url: security/bolna-domain-security.yml
- type: AgentSkill
  url: skills/_index.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence