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, Artificial Intelligence, 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.

🌐 Visit website 📡 Source on GitHub

49.6/100 developing ▬ flat Agent 37/100 agent ready saas Full breakdown ↓
scored 2026-09-06 · rubric v0.19.0

1 APIs 1 MCP Servers

Company Artificial Intelligence Voice AI Conversational AI Voice Agents Telephony SpeechCall AutomationContact Center MCP

Kin Score

Kin Score How this is scored →
scored 2026-09-06 · rubric v0.19.0

Composite quality — 49.6/100 · developing

Contract Quality 10.4 / 25

Developer Ergonomics 13.8 / 20

Access Clarity 7.6 / 20

Operational Transparency 9.6 / 13

Contract Governance 0.5 / 12

Discoverability 7.6 / 10

Agent readiness — 37/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. 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. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

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 Server

Official remote MCP server (Streamable HTTP) wrapping the Bolna voice AI REST API. Manage voice agents, phone numbers, batches, and outbound calls from any MCP client. Authentic...

MCP SERVER

Rate Limits 1

Documented rate limits and quota policies.

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

WellKnown

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Components

Conventions

ErrorCatalog

Lifecycle

Webhooks

Conformance

DataModel

Scroll for all 7

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 5

Status, limits, changes, and where to get help

Support

StatusPage

ChangeLog

RateLimits

Deprecation

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Blog

Blog

Source (apis.yml)

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.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - rate-limits
  - security
  generated: '2026-09-03'
  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: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Artificial Intelligence
- Voice AI
- Conversational AI
- Voice Agents
- Telephony
- Speech
- Call Automation
- Contact Center
- MCP
tags_raw:
- 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

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