Sellsy API

Name: Sellsy API
Brand: Sellsy API
Availability: InStock

✓ Official Vendor SpecCommunicationsEmail Deliveryoauth2351 EndpointsREST

For Agents

Programmatically create a comment, comments list. Covers 351 operations with oauth2 authentication.

Use for: I need to a comment, I want to comments list, Search for comment details, Find all a comment

Install Jentic One Beta

Connect the Sellsy API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Sellsy 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://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh

Step 2: Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | 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 Sellsy API.

Create a comment

Comments List

Get comment details

Update a comment

GET STARTED

Start building with Sellsy API

Explore with Jentic

View OpenAPI Document

Use Cases

Patterns agents use Sellsy API for, with concrete tasks.

★ Communications Operations

Use the Sellsy API to perform communications operations programmatically. The API provides 351 endpoints covering core functionality including create a comment, comments list, get comment details.

Call POST /comments to create a comment

Automated Invoices Management

Automate invoices operations by combining multiple Sellsy API endpoints. Agents can comments list and then get comment details in a single workflow.

Call GET /comments to comments list, then verify the result

AI Agent Integration via Jentic

AI agents discover and call Sellsy API endpoints through Jentic without managing credentials directly. An agent searches for the required operation by intent, receives the matching endpoint schema, and executes the call with Jentic-managed authentication. This eliminates the need to read API documentation or handle oauth2 tokens manually.

Search Jentic for 'create a comment', load the operation schema, and execute with Jentic-managed credentials

Key Endpoints

351 endpoints — find out the [postman collections](dist/postman/collectionsapiv2.

METHOD

PATH

DESCRIPTION

POST

/comments

Create a comment

GET

/comments

Comments List

GET

/comments/{id}

Get comment details

PUT

/comments/{id}

Update a comment

DELETE

/comments/{id}

Delete a comment

POST

/comments/search

Search comments

POST

/companies

Create a company

GET

/companies

Companies List

POST

/comments

Create a comment

GET

/comments

Comments List

GET

/comments/{id}

Get comment details

PUT

/comments/{id}

Update a comment

DELETE

/comments/{id}

Delete a comment

POST

/comments/search

Why Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

Sellsy API oauth2 credentials are stored encrypted in the Jentic vault (MAXsystem). Agents receive scoped access tokens — raw secrets never enter the agent context.

Intent-based discovery

Agents search by intent (e.g., 'create a comment') and Jentic returns the matching Sellsy API operation with its input schema, so the agent can call the right endpoint without browsing docs.

Time to first call

Direct Sellsy API integration: 1-3 days for auth handling, response parsing, and error cases. Through Jentic: under 1 hour — search, load schema, execute.

FAQs

Specific to using Sellsy API through Jentic.

What authentication does the Sellsy API use?

The Sellsy API uses OAuth 2.0 for authorization. Through Jentic, these credentials are stored encrypted in the MAXsystem vault and injected at execution time, so raw secrets never enter the agent context.

Can I create a comment with the Sellsy API?

Yes. Use the POST /comments endpoint. The API returns structured JSON responses that agents can parse and act on directly.

What are the rate limits for the Sellsy API?

Rate limits are not specified in the OpenAPI spec. Check the vendor documentation for current limits. Through Jentic, rate limiting is handled automatically with retry logic built into the execution layer.

How do I create a comment through Jentic?

Install the Jentic SDK with pip install jentic, authenticate at https://app.jentic.com/sign-up, then search for 'create a comment'. Jentic returns the matching Sellsy API operation with its input schema. Load the schema and execute the call — credentials are injected automatically.

How many endpoints does the Sellsy API have?

The Sellsy API exposes 351 endpoints covering invoices, opportunities, credit notes operations.

Sellsy API

Connect the Sellsy API to your agent

Capabilities

Start building with Sellsy API

Use Cases

Key Endpoints

Why Jentic?

Related APIs

FAQs