Syllable is a Mountain View, California company (founded 2017) that operates an agentic platform for building, deploying and optimizing AI voice, SMS, email, web-chat and WhatsApp agents, with a strong focus on healthcare patient experience and contact-center automation. The Syllable Platform SDK exposes a REST API at api.syllable.cloud covering agents, prompts, tools, services, data sources, channels and channel targets, sessions and transcripts, outbound campaigns and batches, insights workflows, directory, dashboards, incidents, organizations, roles, permissions and users. First-party TypeScript and Python SDKs, a Go CLI, a documentation MCP server and a published A2A agent card make it an unusually agent-forward developer surface.
Syllable publishes 40 API contracts indexed on the APIs.io network, including Agents API, Agents.test API, Bridge Phrases API, and 37 more. Tagged areas include Company, Artificial Intelligence, AI Agents, Voice, and Conversational AI.
The Syllable catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.
Syllable’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 34 more developer resources.
Regulatory Posture applies to this provider. Its tags matched the
Telecommunications regime, so
Regulatory Posture carries 15 points of the composite.
If this regime is wrong for your business, say so on your
provider repo — the
applicability map is public and we will correct it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it
carries 10 points of the composite. It is scored from the published contracts
themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already
holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in
front of it, and the first time that check is skipped a duplicate record is created.
Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet,
not penalised by it.
The six quality facets above are damped to 75 points between them,
because the conditional facet above carries the other
25. That is why each facet's contribution is shown against a damped
maximum: raising a quality facet moves the composite by 75% of its nominal
weight, not 100%. The full arithmetic is at apis.io/rating/.
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Agent readiness — checks not met, largest first (exact, from this profile):
Idempotency+9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card+8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling+7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples+7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Delegated User Identity+6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
4 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
The Kin Score Market layer reads a provider inside its market:
its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted:
not part of the Kin Score or agent readiness.
Registered MCP server and declares compatibility are report only — not weighted.
Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
Operations related to agent configuration. When a user interacts with the Syllable system, they do so by communicating with an agent. An agent is linked to a prompt, a custom me...
Operations related to channel configuration. A channel is an organization-level point of communication, like a phone number or a web chat. A channel can be associated with an ag...
Operations related to channel target configuration. A channel target links a channel to an agent, allowing users to communicate with the agent through that channel. For more inf...
Operations related to custom message configuration. A custom message is a pre-configured message delivered by an agent as a greeting at the beginning of a conversation. Multiple...
Operations related to data sources. A data source is a blob of text that can be made available to an agent's general info tools to provide more context to the agent when generat...
Operations related to insights tool configurationss. An insight is a tool that processes conversation data to extract information and generate reports.
Operations related to insights workflows. An workflow is series of tool invocations that processes conversation data to extract information and generate reports.
Operations related to language groups. A language group is a collection of language, voice, and DTMF configuration that can be linked to an agent to define the languages and voi...
Operations related to permissions. A permission is a specific capability or access level granted to a user within the Syllable system. Permissions are used to control access to ...
Operations related to prompts. A prompt defines the behavior of an agent by delivering instructions to the LLM about how the agent should behave. A prompt can be linked to one o...
Operations related to roles. A role is a collection of permissions that can be assigned to users to control their access to various features within the Syllable system.
Operations related to service configuration. A service is a collection of tools. You can specify an authentication method and values on a service, and any linked tools will use ...
Operations related to labeling sessions with evaluations of quality and descriptions of issues the user encountered or other details. For more information, see [Console docs](ht...
Operations related to sessions. A session is a building block of a conversation. For more information, see [Console docs](https://docs.syllable.ai/workspaces/Sessions).
Operations related to tool configuration. A tool is a function that an agent can call to perform actions like accessing databases, making API calls, or processing data. For an a...
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
aid: syllable
name: Syllable
description: Syllable is a Mountain View, California company (founded 2017) that operates an agentic platform for building,
deploying and optimizing AI voice, SMS, email, web-chat and WhatsApp agents, with a strong focus on healthcare patient experience
and contact-center automation. The Syllable Platform SDK exposes a REST API at api.syllable.cloud covering agents, prompts,
tools, services, data sources, channels and channel targets, sessions and transcripts, outbound campaigns and batches, insights
workflows, directory, dashboards, incidents, organizations, roles, permissions and users. First-party TypeScript and Python
SDKs, a Go CLI, a documentation MCP server and a published A2A agent card make it an unusually agent-forward developer surface.
deliveryModel:
model: saas
open_source: false
commercial: true
callable_host: true
label: Hosted service · you call their endpoint
confidence: high
source:
- openapi
- pricing
generated: '2026-08-28'
method: derived
accessModel:
pricing: freemium
onboarding: self-serve
trial: true
try_now: true
public: false
gated: none
gated_source:
- onboarding
label: Freemium (free trial) · Self-serve signup
confidence: high
source:
- plans
- authentication
- security
- sandbox
generated: '2026-11-06'
method: derived
image: https://syllable.ai/figma/assets/syllable-social-share.png
url: https://raw.githubusercontent.com/api-evangelist/syllable/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.23'
created: '2026-08-05'
modified: '2026-08-05'
tags:
- Company
- Artificial Intelligence
- AI Agents
- Voice
- Conversational AI
- Contact Center
- Healthcare
- Telephony
- SMS
- Customer Experience
- A2A
apis:
- aid: syllable:syllable-agents-api
name: Syllable Agents API
description: Operations related to agent configuration. When a user interacts with the Syllable system, they do
so by communicating with an agent. An agent is linked to a prompt, a custom message, and one or more channel
targets to define its behavior and capabilities. For more information, see [Console docs](https://docs.syllable.ai/workspaces/Agents).
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Agents
tags_raw:
- agents
properties:
- type: OpenAPI
url: openapi/syllable-agents-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-agents-test-api
name: Syllable Agents.test API
description: Operations for testing agents with live text. These endpoints allow sending messages to an agent
and receiving its responses.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- agents.test
properties:
- type: OpenAPI
url: openapi/syllable-agents-test-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-bridge-phrases-api
name: Syllable Bridge Phrases API
description: The bridge_phrases API from Syllable — 2 operation(s) for bridge_phrases.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- bridge_phrases
properties:
- type: OpenAPI
url: openapi/syllable-bridge-phrases-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-channels-api
name: Syllable Channels API
description: Operations related to channel configuration. A channel is an organization-level point of communication,
like a phone number or a web chat. A channel can be associated with an agent by creating a channel target linking them.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Channels
tags_raw:
- channels
properties:
- type: OpenAPI
url: openapi/syllable-channels-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-channels-targets-api
name: Syllable Channels.targets API
description: Operations related to channel target configuration. A channel target links a channel to an agent,
allowing users to communicate with the agent through that channel. For more information, see [Console
docs](https://docs.syllable.ai/Resources/Channels).
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- channels.targets
properties:
- type: OpenAPI
url: openapi/syllable-channels-targets-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-channels-twilio-api
name: Syllable Channels.twilio API
description: Operations related to Twilio channel configuration.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- channels.twilio
properties:
- type: OpenAPI
url: openapi/syllable-channels-twilio-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-channels-twilio-numbers-api
name: Syllable Channels.twilio.numbers API
description: Operations related to setting up phone numbers in Twilio for use in channels.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- channels.twilio.numbers
properties:
- type: OpenAPI
url: openapi/syllable-channels-twilio-numbers-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-conversation-config-api
name: Syllable Conversation Config API
description: The conversation-config API from Syllable — 1 operation(s) for conversation-config.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- conversation-config
properties:
- type: OpenAPI
url: openapi/syllable-conversation-config-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-conversations-api
name: Syllable Conversations API
description: Operations related to conversations. A conversation is a record of messages between a user and an
agent, and is composed of one or more sessions.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Conversations
tags_raw:
- conversations
properties:
- type: OpenAPI
url: openapi/syllable-conversations-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-custom-messages-api
name: Syllable Custom Messages API
description: Operations related to custom message configuration. A custom message is a pre-configured message
delivered by an agent as a greeting at the beginning of a conversation. Multiple agents can use the same custom
mesasage. A custom message has one or more rules defined, which allow for different messages to be dynamically
selected and delivered at runtime based on the current time and either date or day of the week. For more information,
see [Console docs](https://docs.syllable.ai/Resources/Messages).
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- custom_messages
properties:
- type: OpenAPI
url: openapi/syllable-custom-messages-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-dashboards-api
name: Syllable Dashboards API
description: Operations related to dashboards. Currently the API/SDK only supports fetching basic information
about dashboards.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Dashboards
tags_raw:
- dashboards
properties:
- type: OpenAPI
url: openapi/syllable-dashboards-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-data-sources-api
name: Syllable Data Sources API
description: Operations related to data sources. A data source is a blob of text that can be made available to
an agent's general info tools to provide more context to the agent when generating its responses. For more information,
see [Console docs](https://docs.syllable.ai/Resources/DataSources).
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Data Sources
tags_raw:
- data_sources
properties:
- type: OpenAPI
url: openapi/syllable-data-sources-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-directory-api
name: Syllable Directory API
description: Operations related to directory
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Directory
tags_raw:
- directory
properties:
- type: OpenAPI
url: openapi/syllable-directory-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-events-api
name: Syllable Events API
description: Operations related to events. An event represents a specific occurrence during a session. Currently
the API/SDK only supports fetching logged events.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Event
tags_raw:
- events
properties:
- type: OpenAPI
url: openapi/syllable-events-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-incidents-api
name: Syllable Incidents API
description: Operations related to incidents.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Incidents
tags_raw:
- incidents
properties:
- type: OpenAPI
url: openapi/syllable-incidents-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-insights-api
name: Syllable Insights API
description: Operations related to insights results. An insight is a tool that processes conversation data to extract
information and generate reports.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Insights
tags_raw:
- insights
properties:
- type: OpenAPI
url: openapi/syllable-insights-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-insights-folders-api
name: Syllable Insights.folders API
description: Operations related to insights upload folders. An insight folder is used to upload call recordings
for insight workflow analysis.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- insights.folders
properties:
- type: OpenAPI
url: openapi/syllable-insights-folders-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-insights-tools-api
name: Syllable Insights.tools API
description: Operations related to insights tool configurationss. An insight is a tool that processes conversation
data to extract information and generate reports.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- insights.tools
properties:
- type: OpenAPI
url: openapi/syllable-insights-tools-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-insights-workflows-api
name: Syllable Insights.workflows API
description: Operations related to insights workflows. An workflow is series of tool invocations that processes
conversation data to extract information and generate reports.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- insights.workflows
properties:
- type: OpenAPI
url: openapi/syllable-insights-workflows-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-language-groups-api
name: Syllable Language Groups API
description: Operations related to language groups. A language group is a collection of language, voice, and DTMF
configuration that can be linked to an agent to define the languages and voices it supports. For more information,
see [Console docs](https://docs.syllable.ai/Resources/LanguageGroups).
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- language_groups
properties:
- type: OpenAPI
url: openapi/syllable-language-groups-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-organizations-api
name: Syllable Organizations API
description: Operations related to organizations.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Organization
tags_raw:
- organizations
properties:
- type: OpenAPI
url: openapi/syllable-organizations-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-organizations-sip-ip-ranges-api
name: Syllable Organizations.sip Ip Ranges API
description: The organizations.sip_ip_ranges API from Syllable — 2 operation(s) for organizations.sip_ip_ranges.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- organizations.sip_ip_ranges
properties:
- type: OpenAPI
url: openapi/syllable-organizations-sip-ip-ranges-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-outbound-batches-api
name: Syllable Outbound.batches API
description: Operations related to outbound campaign batches
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- outbound.batches
properties:
- type: OpenAPI
url: openapi/syllable-outbound-batches-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-outbound-campaigns-api
name: Syllable Outbound.campaigns API
description: Operations related to outbound message campaigns
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- outbound.campaigns
properties:
- type: OpenAPI
url: openapi/syllable-outbound-campaigns-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-permissions-api
name: Syllable Permissions API
description: Operations related to permissions. A permission is a specific capability or access level granted
to a user within the Syllable system. Permissions are used to control access to various features and functionalities.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Permissions
tags_raw:
- permissions
properties:
- type: OpenAPI
url: openapi/syllable-permissions-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-prompts-api
name: Syllable Prompts API
description: Operations related to prompts. A prompt defines the behavior of an agent by delivering instructions
to the LLM about how the agent should behave. A prompt can be linked to one or more agents. A prompt can also
be linked to tools to allow an agent using the prompt to use them. For more information, see [Console
docs](https://docs.syllable.ai/Resources/Prompts).
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Prompts
tags_raw:
- prompts
properties:
- type: OpenAPI
url: openapi/syllable-prompts-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-pronunciations-api
name: Syllable Pronunciations API
description: The pronunciations API from Syllable — 3 operation(s) for pronunciations.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Pronunciations
tags_raw:
- pronunciations
properties:
- type: OpenAPI
url: openapi/syllable-pronunciations-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-roles-api
name: Syllable Roles API
description: Operations related to roles. A role is a collection of permissions that can be assigned to users
to control their access to various features within the Syllable system.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Roles
tags_raw:
- roles
properties:
- type: OpenAPI
url: openapi/syllable-roles-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-services-api
name: Syllable Services API
description: Operations related to service configuration. A service is a collection of tools. You can specify
an authentication method and values on a service, and any linked tools will use that auth information to generate
headers for HTTP calls.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Services
tags_raw:
- services
properties:
- type: OpenAPI
url: openapi/syllable-services-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-session-debug-api
name: Syllable Session Debug API
description: The session_debug API from Syllable — 3 operation(s) for session_debug.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- session_debug
properties:
- type: OpenAPI
url: openapi/syllable-session-debug-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-session-labels-api
name: Syllable Session Labels API
description: Operations related to labeling sessions with evaluations of quality and descriptions of issues the
user encountered or other details. For more information, see [Console docs](https://docs.syllable.ai/workspaces/Sessions).
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- session_labels
properties:
- type: OpenAPI
url: openapi/syllable-session-labels-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-sessions-api
name: Syllable Sessions API
description: Operations related to sessions. A session is a building block of a conversation. For more information,
see [Console docs](https://docs.syllable.ai/workspaces/Sessions).
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Sessions
tags_raw:
- sessions
properties:
- type: OpenAPI
url: openapi/syllable-sessions-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-sessions-full-summary-api
name: Syllable Sessions.full Summary API
description: The sessions.full-summary API from Syllable — 1 operation(s) for sessions.full-summary.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- sessions.full-summary
properties:
- type: OpenAPI
url: openapi/syllable-sessions-full-summary-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-sessions-latency-api
name: Syllable Sessions.latency API
description: The sessions.latency API from Syllable — 1 operation(s) for sessions.latency.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- sessions.latency
properties:
- type: OpenAPI
url: openapi/syllable-sessions-latency-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-sessions-timeline-api
name: Syllable Sessions.timeline API
description: The sessions.timeline API from Syllable — 1 operation(s) for sessions.timeline.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- sessions.timeline
properties:
- type: OpenAPI
url: openapi/syllable-sessions-timeline-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-sessions-transcript-api
name: Syllable Sessions.transcript API
description: The sessions.transcript API from Syllable — 1 operation(s) for sessions.transcript.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- sessions.transcript
properties:
- type: OpenAPI
url: openapi/syllable-sessions-transcript-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-takeouts-api
name: Syllable Takeouts API
description: The takeouts API from Syllable — 3 operation(s) for takeouts.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- takeouts
properties:
- type: OpenAPI
url: openapi/syllable-takeouts-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-tools-api
name: Syllable Tools API
description: Operations related to tool configuration. A tool is a function that an agent can call to perform
actions like accessing databases, making API calls, or processing data. For an agent to have access to a tool,
the prompt associated with that agent should be linked to the tool and include instructions to use it. For more information,
see [Console docs](https://docs.syllable.ai/Resources/Tools).
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- Tools
tags_raw:
- tools
properties:
- type: OpenAPI
url: openapi/syllable-tools-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-users-api
name: Syllable Users API
description: The users API from Syllable — 4 operation(s) for users.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags:
- User
tags_raw:
- users
properties:
- type: OpenAPI
url: openapi/syllable-users-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- aid: syllable:syllable-voice-groups-api
name: Syllable Voice Groups API
description: The voice_groups API from Syllable — 3 operation(s) for voice_groups.
humanURL: https://docs.syllable.ai/
baseURL: https://api.syllable.cloud
tags: []
tags_raw:
- voice_groups
properties:
- type: OpenAPI
url: openapi/syllable-voice-groups-api-openapi.yml
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
- FN: APIs.json
email: info@apis.io
common:
- type: Plans
url: plans/syllable-plans-pricing.yml
- type: CapabilityMap
url: capabilities/syllable-capability-edges.yml
name: Syllable Business Capability Map
- type: Overlay
url: overlays/syllable-sdk-overlay.yaml
- type: AgenticAccess
url: agentic-access/syllable-agentic-access.yml
- type: TrustCenter
url: security/syllable-trust-center.yml
- type: DomainSecurity
url: security/syllable-domain-security.yml
- type: Website
url: https://syllable.ai/
- type: DeveloperPortal
url: https://docs.syllable.ai/
- type: Documentation
url: https://docs.syllable.ai/
- type: APIReference
url: https://docs.syllable.ai/api-reference/agents/agent-list
- type: GettingStarted
url: https://docs.syllable.ai/sdk-guides/Overview
- type: Support
url: https://syllable.ai/contact-us/
- type: Blog
url: https://syllable.ai/blog/
- type: GitHubOrganization
url: https://github.com/asksyllable
- type: Pricing
url: https://syllable.ai/pricing
- type: SignUp
url: https://syllable.cloud/sign-up
- type: Login
url: https://syllable.cloud/
- type: TermsOfService
url: https://syllable.ai/terms
- type: PrivacyPolicy
url: https://syllable.ai/legal/privacy-policy
- type: StatusPage
url: https://syllable.statuspage.io
- type: Compliance
url: https://trust.syllable.ai
- type: ChangeLog
url: https://syllable.ai/release-notes/
- type: Packages
url: packages/syllable-packages.yml
- type: SDKs
url: packages/syllable-packages.yml
- type: CLI
url: cli/syllable-cli.yml
- type: MCPServer
url: mcp/syllable-mcp.yml
- type: ToolCrosswalk
url: mcp/syllable-tool-crosswalk.yml
- type: AgentCard
url: a2a/syllable-a2a.yml
- type: AgentSkill
url: skills/_index.yml
- type: LLMsTxt
url: llms/syllable-llms.txt
- type: WellKnown
url: well-known/syllable-well-known.yml
- type: Authentication
url: authentication/syllable-authentication.yml
- type: Conventions
url: conventions/syllable-conventions.yml
- type: ErrorCatalog
url: errors/syllable-problem-types.yml
- type: Lifecycle
url: lifecycle/syllable-lifecycle.yml
- type: Conformance
url: conformance/syllable-conformance.yml
- type: DataModel
url: data-model/syllable-data-model.yml
- type: Sandbox
url: sandbox/syllable-sandbox.yml
- type: Components
url: components/syllable-components.yml
- type: Webhooks
url: asyncapi/syllable-outbound-webhooks.yml
- type: ChangeLog
url: changelog/syllable-changelog.yml
x-enrichment:
date: '2026-08-05'
status: enriched
artifacts_added: 30
pass: local-v1
Syllable API — frequently asked questions
Does Syllable have an API?
Yes. APIs.io lists 40 APIs from Syllable, including Syllable Agents API, Syllable Agents.test API and Syllable Bridge Phrases API, and 37 more.
Is there an OpenAPI specification for the Syllable API?
Yes. APIs.io indexes 40 OpenAPI specifications for Syllable, each linked for download from this page.
How do I authenticate with the Syllable API?
Syllable uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Syllable Authentication.
How much does the Syllable API cost?
Syllable publishes its prices; its Free Trial plan is Get started at no cost with a limited-minute allowance. as of 2026-10-07. APIs.io lists 12 pricing plans for Syllable, with each plan's price, limits and inclusions under Pricing on this page.
Does Syllable have an MCP server?
Yes. APIs.io lists 1 MCP server for Syllable: Remote MCP server at docs.syllable.ai over HTTP; 3 tools listed.
Is the Syllable API ready for AI agents?
Syllable has a Kin Score of 68.3 out of 100 (exemplar) and an Agent Readiness score of 37.6 (agent-ready), scored by API Evangelist on 2026-11-06.
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