Symbl.ai

Symbl.ai is a conversation-intelligence platform for understanding and generating insights from human conversations across voice, video, and text. Its developer platform exposed Async, Streaming, and Telephony APIs plus the Nebula LLM for real-time speech-to-text and conversational insights — action items, topics, questions, follow-ups, sentiment, and custom trackers — with first-party SDKs for JavaScript, Web (browser), Python, and Go. Symbl.ai was acquired by Invoca (announced 2025-05-28) and the standalone developer platform is decommissioned: api.symbl.ai, docs.symbl.ai, platform.symbl.ai, nebula.symbl.ai and integrations.symbl.ai all fail to resolve in DNS as of 2026-08-14, so no endpoint is callable and no account can be created. What survives is real and public — the open-sourced documentation repository (github.com/symblai/symbl-docs), first-party Postman workspaces, the client SDKs on npm, PyPI and pkg.go.dev (newest release 2024-11-18), and the live marketing, blog, pricing and SOC 2 / HIPAA / PCI / GDPR compliance pages.

Symbl.ai is profiled on the APIs.io network. Tagged areas include Company, Conversation Intelligence, Speech to Text, Voice AI, and Artificial Intelligence.

Symbl.ai’s developer surface includes engineering blog, pricing, support, documentation, changelog, and 17 more developer resources.

36.8/100 thin ▲ 19.7 Agent 3/100 human only Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0
0 APIs
CompanyConversation IntelligenceSpeech to TextVoice AIArtificial IntelligenceMachine LearningReal TimeSDKs

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0
Composite quality — 36.8/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 7.0 / 20
Commercial Clarity 15.8 / 20
Operational Transparency 6.8 / 13
Governance 1.5 / 12
Discoverability 5.7 / 10
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
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/symblai: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Pricing Plans 1

Published pricing tiers and plan structures.

Symblai Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Symblai Rate Limits

8 limits

RATE LIMITS

Security Posture 2

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

Symblai Domain Security

TLSv1.3 · DMARC

SECURITY

Symblai Trust Center

SOC 2 Type II, HIPAA, PCI DSS, GDPR, CSA CAIQ

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Build 4

SDKs, sample code, and the tooling you integrate with

Access & Security 3

Authentication, authorization, and security posture

Operate 3

Status, limits, changes, and where to get help

Commercial 4

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: symblai
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/symblai.png
name: Symbl.ai
description: 'Symbl.ai is a conversation-intelligence platform for understanding and generating insights from human conversations
  across voice, video, and text. Its developer platform exposed Async, Streaming, and Telephony APIs plus the Nebula LLM for
  real-time speech-to-text and conversational insights — action items, topics, questions, follow-ups, sentiment, and custom
  trackers — with first-party SDKs for JavaScript, Web (browser), Python, and Go. Symbl.ai was acquired by Invoca (announced
  2025-05-28) and the standalone developer platform is decommissioned: api.symbl.ai, docs.symbl.ai, platform.symbl.ai, nebula.symbl.ai
  and integrations.symbl.ai all fail to resolve in DNS as of 2026-08-14, so no endpoint is callable and no account can be
  created. What survives is real and public — the open-sourced documentation repository (github.com/symblai/symbl-docs), first-party
  Postman workspaces, the client SDKs on npm, PyPI and pkg.go.dev (newest release 2024-11-18), and the live marketing, blog,
  pricing and SOC 2 / HIPAA / PCI / GDPR compliance pages.'
url: https://raw.githubusercontent.com/api-evangelist/symblai/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- techstars
x-tier: stub
x-tier-reason: portfolio-lead
x-enrichment:
  date: '2026-08-14'
  status: enriched
  artifacts_added: 7
  pass: local-v1
x-coverage:
  state: none
  reason: no-developer-program
  detail: Symbl.ai's developer program no longer exists — api.symbl.ai, docs.symbl.ai, platform.symbl.ai, nebula.symbl.ai
    and integrations.symbl.ai were all removed from DNS after the Invoca acquisition, so there is no endpoint to call and
    the Sign-up button on the still-live pricing page points at a host that does not resolve.
  evidence:
  - url: https://api.symbl.ai/
    status: 0
  - url: https://docs.symbl.ai/
    status: 0
  - url: https://platform.symbl.ai/#/signup
    status: 0
  - url: https://symbl.ai/openapi.json
    status: 404
  - url: https://symbl.ai/company/pricing/
    status: 200
  checked: '2026-08-14'
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-08-14'
tags:
- Company
- Conversation Intelligence
- Speech to Text
- Voice AI
- Artificial Intelligence
- Machine Learning
- Real Time
- SDKs
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://symbl.ai/
- type: DeveloperPortal
  url: https://symbl.ai/developers/
- type: Blog
  url: https://symbl.ai/developers/blog/
- type: GitHubOrganization
  url: https://github.com/symblai
- type: Pricing
  url: https://symbl.ai/company/pricing/
- type: Support
  url: https://symbl.ai/service-and-support/support/support-plans/
- type: TermsOfService
  url: https://symbl.ai/termsofservice/
- type: PrivacyPolicy
  url: https://symbl.ai/privacy-policy/
- type: Packages
  url: packages/symblai-packages.yml
- type: SDKs
  url: packages/symblai-packages.yml
- type: Components
  url: components/symblai-components.yml
- type: DomainSecurity
  url: security/symblai-domain-security.yml
- type: LLMsTxt
  url: llms/symblai-llms.txt
- type: Documentation
  url: https://github.com/symblai/symbl-docs
- type: Postman
  url: https://www.postman.com/symbldotai/workspace/symbl-ai/overview
- type: Lifecycle
  url: lifecycle/symblai-lifecycle.yml
- type: ChangeLog
  url: changelog/symblai-changelog.yml
- type: Plans
  url: plans/symblai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/symblai-rate-limits.yml
- type: Conformance
  url: conformance/symblai-conformance.yml
- type: Compliance
  url: conformance/symblai-conformance.yml
- type: TrustCenter
  url: security/symblai-trust-center.yml