Respeecher
Respeecher is an AI voice company known for high-fidelity speech-to-speech (STS) voice conversion and text-to-speech (TTS) used across film, television, games, and advertising. It exposes two documented, self-service public APIs. The Voice Marketplace API (gateway.respeecher.com) provides voice discovery, speech-to-speech conversion orders, text-to-speech synthesis, calibration, recordings, projects/folders, credits, and statistics, secured with an API key. The newer Respeecher Space real-time TTS API (api.respeecher.com) streams lifelike audio in under 200ms via one-shot bytes, HTTP SSE, and a WebSocket channel, with English (en-rt) and Ukrainian (ua-rt) models, official Python and TypeScript SDKs, and LiveKit, Pipecat, Ultravox, and VAPI integrations. Bespoke, high-touch voice cloning for studios is delivered through the enterprise AI Voice Lab.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Respeecher the way a machine reads it — 41 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Respeecher scores 33.0/100 (thin), with a separate agent-readiness read of 24/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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How we profile Respeecher
Each block below is one kind of artifact we hold for Respeecher. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 17
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Respeecher Space Real-Time TTS API
Low-latency real-time text-to-speech that begins streaming audio in under 200ms via three transports - one-shot bytes (POST /tts/bytes, up to ~5,000 characters), HTTP SSE chunks...
Respeecher accents API
The accents API from Respeecher — 1 operation(s) for accents.
Respeecher auth API
The auth API from Respeecher — 3 operation(s) for auth.
Respeecher calibration API
The calibration API from Respeecher — 3 operation(s) for calibration.
Respeecher credits API
The credits API from Respeecher — 1 operation(s) for credits.
Respeecher folders API
The folders API from Respeecher — 2 operation(s) for folders.
Respeecher healtz API
The healtz API from Respeecher — 1 operation(s) for healtz.
Respeecher models API
The models API from Respeecher — 1 operation(s) for models.
Respeecher narration-styles API
The narration-styles API from Respeecher — 1 operation(s) for narration-styles.
Respeecher notes API
The notes API from Respeecher — 1 operation(s) for notes.
Respeecher orders API
The orders API from Respeecher — 2 operation(s) for orders.
Respeecher projects API
The projects API from Respeecher — 4 operation(s) for projects.
Respeecher recordings API
The recordings API from Respeecher — 9 operation(s) for recordings.
Respeecher stats API
The stats API from Respeecher — 3 operation(s) for stats.
Respeecher storage API
The storage API from Respeecher — 1 operation(s) for storage.
Respeecher tts API
The tts API from Respeecher — 1 operation(s) for tts.
Respeecher voices API
The voices API from Respeecher — 4 operation(s) for voices.
Scroll within the panel for all 17 ·
Open Collections 17
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONVoice Markertplace accents API
OPEN COLLECTIONVoice Markertplace accents auth API
OPEN COLLECTIONVoice Markertplace accents calibration API
OPEN COLLECTIONVoice Markertplace accents credits API
OPEN COLLECTIONVoice Markertplace accents folders API
OPEN COLLECTIONVoice Markertplace accents healtz API
OPEN COLLECTIONVoice Markertplace accents models API
OPEN COLLECTIONVoice Markertplace accents narration-styles API
OPEN COLLECTIONVoice Markertplace accents notes API
OPEN COLLECTIONVoice Markertplace accents orders API
OPEN COLLECTIONVoice Markertplace accents projects API
OPEN COLLECTIONVoice Markertplace accents recordings API
OPEN COLLECTIONVoice Markertplace accents stats API
OPEN COLLECTIONVoice Markertplace accents storage API
OPEN COLLECTIONVoice Markertplace accents tts API
OPEN COLLECTIONVoice Markertplace accents voices API
OPEN COLLECTIONScroll within the panel for all 17 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Respeecher Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Respeecher Finops
FINOPSEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Respeecher Space Real-Time TTS WebSocket API
AsyncAPI description of the Respeecher Space real-time text-to-speech WebSocket channel. A single persistent WebSocket connection carries multiple concurrent text-to-speech gene...
ASYNCAPISpectral Rules 1
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Respeecher API Rules
SPECTRALSecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Respeecher — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 1
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Access & Security 1
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
← All providers · Data indexed from github.com/api-evangelist/respeecher · machine-readable index on apis.io
This is an independent, third-party profile of Respeecher, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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