Install Jentic One Beta

Connect the CallChatSyn API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the CallChatSyn API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.

Step 1: Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fcallchatsyn.com%2Fcallchatsyn" | sh

Step 2: Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fcallchatsyn.com%2Fcallchatsyn" | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with CallChatSyn API.

Answer a customer's message with the business's bot

List the open appointment times a business offers

Book an open appointment slot for a customer

Cancel an existing booking by id

Use Cases

Patterns agents use CallChatSyn API for, with concrete tasks.

GET STARTED

Start building with CallChatSyn API

Explore with Jentic One

View OpenAPI Document

Website Answer Widget

A website sends each visitor message to the answer operation and shows the bot's reply, so a site answers common questions with the business's own knowledge without a live agent. The reply comes back in the same call, ready to render in a chat widget.

Send the visitor's message to the answer operation and return the bot's reply for the chat widget

Self-Serve Appointment Booking

An app lists the business's open slots, books the one a customer picks with their name and contact details, and can cancel it later by id, so appointment scheduling runs end to end through the API. The slots operation reflects the times the business currently offers.

List open slots for a haircut, book the 2pm time for the named customer, and confirm the booking

Key Endpoints

4 endpoints — the callchatsyn api lets a website, app, or ai agent answer customer questions and book appointments through a business's own answering bot.

METHOD

PATH

DESCRIPTION

POST

/api/v1/answer

Answer a customer's message

GET

/api/v1/slots

List open appointment times

POST

/api/v1/bookings

Book an open time

DELETE

/api/v1/bookings/{id}

Cancel a booking

POST

/api/v1/answer

Answer a customer's message

GET

/api/v1/slots

List open appointment times

POST

/api/v1/bookings

Book an open time

DELETE

/api/v1/bookings/{id}

Cancel a booking

Why Jentic?

What agents get from Jentic-routed access to this vendor.

Setup

Wiring the CallChatSyn API by hand means handling its bearer key auth, sequencing the answer, slots, and booking operations, and tracking which bookings count toward the plan. Through Jentic you install once, import CallChatSyn from the API Directory, store the key once, and your agent calls it.

Permission scoping

You choose which operations your agent may call, so you can allow answering questions and listing slots while leaving booking and cancellation out. The message and booking details travel in the request body, so rules bound which operations run rather than which customer is involved.

Credential isolation

Your CallChatSyn key is stored once, encrypted, by your own Jentic One instance and injected at execution time. It never enters the agent's prompt, logs, or context.

Intent-based discovery

Agents search Jentic by intent such as 'answer a customer question' or 'book an appointment', and Jentic returns the matching CallChatSyn operation with its input schema so the agent calls the right endpoint without reading the reference docs.

FAQs

Specific to using CallChatSyn API through Jentic.

Is there a CallChatSyn MCP server?

You don't need an MCP server to give your agent the CallChatSyn API. Jentic connects it directly from the API Directory: import it, store your key once, and your agent can answer questions and book appointments straight away, with no extra server to run and no tool definitions loaded into the agent's context.

Can I limit what my agent is allowed to do with the CallChatSyn API?

Yes. You choose which operations your agent may call, so you can allow answering questions and listing open slots while leaving booking and cancellation out, and every call it makes is logged. That lets a read-only assistant respond to visitors without ever scheduling or cancelling.

What authentication does the CallChatSyn API use?

The CallChatSyn API authenticates with a bearer API key per its OpenAPI spec, created in the dashboard under Developers, and a public demo key lets you try the flow before signing up. Through Jentic the key is stored encrypted by your own instance and added to each request at call time.

Can I book an appointment through the CallChatSyn API?

Yes. You list the open times the business offers, then create a booking for a chosen slot with the customer's name and contact details, and you can cancel that booking later by its id. Booking requires a start time and a service.

What are the rate limits for the CallChatSyn API?

The OpenAPI spec does not publish a fixed rate limit; requests count toward the business's own plan usage, as described in the spec. For the limits on your plan, see the CallChatSyn dashboard under Developers.

How do I answer a customer question with the CallChatSyn API through Jentic?

Import the CallChatSyn API from the Jentic API Directory, then have your agent issue a request such as 'answer this customer message'. Jentic matches the intent to the answer operation and returns its input schema so the agent builds a valid request, with your stored key injected at call time. To run it on your own infrastructure, install Jentic One from its GitHub repo.

CallChatSyn API

AI ReadinessFoundational (C-)50/100

See full scorecard

Official vendor OpenAPI document · agent-readyCommunicationsChat Messagingbearer4 EndpointsREST

For Agents

Answer a customer's question with a business's bot, list open appointment slots, and book or cancel appointments. Authenticates with a bearer API key.

Use for: Answer a customer's question with the business bot, Show the open appointment times for this week, Book an appointment for a customer, Cancel a customer's booking

Not supported: Does not handle live agent handoff, payment collection, or outbound marketing messages. Use for answering customer questions and booking appointments through the business bot only.

The CallChatSyn API lets a website, app, or AI agent answer customer questions and book appointments through a business's own answering bot. You send a customer message to the answer operation and get the bot's reply, list the open appointment times the business offers, create a booking for an open slot, and cancel a booking by id. Requests count toward the business's own plan usage, and a public demo key is available to try the flow without signing up.

Jentic One on Github View OpenAPI Document

Show dimension breakdown

Foundational Compliance

Base layer of spec validity and structural soundness.

Grade: A-Signals: 4

97%

Lint Results

Aggregated quality score from linter diagnostics, weighted by severity.

100%

Resolution Completeness

Percentage of `$ref` references that resolve successfully.

Specification Validity

Checks whether the API description parses successfully and conforms to its declared specification (e.g., OpenAPI).

100%

Structural Integrity

Structural correctness score based on schema issues using logarithmic dampening.

Developer Experience & Jentic Compatibility

Clarity, completeness, and ingestion readiness for developers and tooling.

Grade: B-Signals: 4

Example Density

How richly the API is illustrated with examples.

100%

Example Validity

Percentage of examples that conform to their schemas.

44%

Response Coverage

Percentage of operations with complete response definitions (success, client error, server error).

100%

Tooling Readiness

Health of API ingestion, bundling, and resolution within Jentic pipelines.

AI-Readiness & Agent Experience

Semantic breadth, depth, and agent comprehension for AI systems.

Grade: FSignals: 4

31%

Description Coverage

Coverage of descriptions across API elements.

Error Standardization

Coverage of RFC 9457 Problem Details for error responses.

25%

OperationId Quality

Coverage, uniqueness, and casing consistency of operationIds for AI inference.

44%

Summary Coverage

Coverage of summaries across operations/tags/info.

Agent Usability

Functional utility, complexity comfort, and AI orchestration readiness.

Grade: A+Signals: 1

94%

Complexity Comfort

Agent comfort level based on API operational and structural complexity.

Security

Trust, risk posture, and security compliance.

Grade: B-Signals: 1

60%

Authentication Strength

Average quality of security schemes based on authentication method strength (weakest link for OAuth2).

AI Discoverability

Findability, semantic richness, and reasoning readiness.

Grade: ASignals: 1

81%

Descriptive Richness

Clarity and depth of descriptions across API elements.

Connect the CallChatSyn API to your agent

Capabilities

Use Cases

Start building with CallChatSyn API

Key Endpoints

Why Jentic?

Related APIs

FAQs

CallChatSyn API

Jentic AI Readiness Score

CallChatSyn API

Foundational Compliance

Lint Results

Resolution Completeness

Specification Validity

Structural Integrity

Developer Experience & Jentic Compatibility

Example Density

Example Validity

Response Coverage

Tooling Readiness

AI-Readiness & Agent Experience

Description Coverage

Error Standardization

OperationId Quality

Summary Coverage

Agent Usability

Complexity Comfort

Security

Authentication Strength

AI Discoverability

Descriptive Richness