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Full detail: Where this data comes from
Vessel (Kinit Inc.) is a developer-first embedded integrations platform for go-to-market software. It gives a product team one contract to read and write an end customer's CRM, sales engagement, chat, dialer and marketing automation tools, plus a drop-in browser component — Vessel Link — that handles the end user's authorization so the host application never touches downstream credentials. Three modules sit on an open-source integrations library: Unification (one normalized schema per vertical), Actions (typed, validated wrappers over a single provider's native API), and Managed ETL. An /api/passthrough endpoint forwards arbitrary authenticated requests for anything the modules do not cover. Vessel publishes 20 OpenAPI 3.1.0 definitions covering 376 operations in its own documentation repository. As of 2026-08-13 those contracts are still public but the operational surface is not: api.vessel.dev does not answer, api.vessel.land has no DNS record, and both docs.vessel.dev and app.vessel.dev are unreachable.
Areas: CRM · Chat · Sales Dialer · Embedded Integrations · Go-To-Market · Integration · iPaaS · Marketing Automation · Sales Engagement · Unified API · Webhook
Everything profiled for Vessel is published on APIs.io rather than in this repository. Start at the provider page — apis.io/providers/vessel/ — or go straight to one of the APIs or properties below.
- Vessel Accounts API — The accounts API from Vessel — 7 operation(s) for accounts.
- Vessel Actions API — The Actions API from Vessel — 115 operation(s) for actions.
- Vessel Attendees API — The attendees API from Vessel — 5 operation(s) for attendees.
- Vessel Auth API — The Auth API from Vessel — 6 operation(s) for auth.
- Vessel Connection API — The Connection API from Vessel — 1 operation(s) for connection.
- Vessel Connections API — The connections API from Vessel — 5 operation(s) for connections.
- Vessel Contacts API — The contacts API from Vessel — 5 operation(s) for contacts.
- Vessel CRM API — The Crm API from Vessel — 9 operation(s) for crm.
- Vessel Deals API — The deals API from Vessel — 5 operation(s) for deals.
- Vessel Emails API — The emails API from Vessel — 5 operation(s) for emails.
- Vessel Eng Accounts API — The engAccounts API from Vessel — 2 operation(s) for engaccounts.
- Vessel Eng Accountss API — The engAccountss API from Vessel — 1 operation(s) for engaccountss.
- Vessel Eng Actions API — The engActions API from Vessel — 3 operation(s) for engactions.
- Vessel Eng Calls API — The engCalls API from Vessel — 2 operation(s) for engcalls.
- Vessel Eng Contacts API — The engContacts API from Vessel — 3 operation(s) for engcontacts.
- Vessel Eng Custom Fields API — The engCustomFields API from Vessel — 2 operation(s) for engcustomfields.
- Vessel Eng Dispositions API — The engDispositions API from Vessel — 1 operation(s) for engdispositions.
- Vessel Eng Emails API — The engEmails API from Vessel — 3 operation(s) for engemails.
- Vessel Eng Mailboxes API — The engMailboxes API from Vessel — 1 operation(s) for engmailboxes.
- Vessel Eng Passthrough API — The engPassthrough API from Vessel — 1 operation(s) for engpassthrough.
- Vessel Eng Sequences API — The engSequences API from Vessel — 4 operation(s) for engsequences.
- Vessel Eng Tasks API — The engTasks API from Vessel — 3 operation(s) for engtasks.
- Vessel Eng Users API — The engUsers API from Vessel — 2 operation(s) for engusers.
- Vessel Events API — The events API from Vessel — 5 operation(s) for events.
- Vessel Integrations API — The integrations API from Vessel — 2 operation(s) for integrations.
- Vessel Lead Custom Fields API — The leadCustomFields API from Vessel — 1 operation(s) for leadcustomfields.
- Vessel Leads API — The leads API from Vessel — 5 operation(s) for leads.
- Vessel Links API — The links API from Vessel — 1 operation(s) for links.
- Vessel Lists API — The lists API from Vessel — 2 operation(s) for lists.
- Vessel Notes API — The notes API from Vessel — 5 operation(s) for notes.
- Vessel Passthrough API — The passthrough API from Vessel — 2 operation(s) for passthrough.
- Vessel Tasks API — The tasks API from Vessel — 5 operation(s) for tasks.
- Vessel Tokens API — The tokens API from Vessel — 1 operation(s) for tokens.
- Vessel Unifications API — The Unifications API from Vessel — 107 operation(s) for unifications.
- Vessel Users API — The users API from Vessel — 5 operation(s) for users.
- Vessel Webhooks API — The webhooks API from Vessel — 5 operation(s) for webhooks.
- Vessel Contact Custom Fields API — The Contact Custom Fields API from Vessel — 1 operation(s) for contact custom fields.
Each property below is a page on APIs.io carrying the machine-readable artifact and what it says.
Event-driven and webhook contracts.
Model Context Protocol servers that expose the API to agents.
Which operations an agent can call, which act, and which need a human in the loop.
The data models the API reads and writes.
Data models expressed in JSON Structure.
Linked-data contexts for the provider's vocabulary.
The provider's domain terms, defined.
Example requests and responses.
- Vessel Get Session Token Example
- Vessel List Connections Example
- Vessel List Crm Contacts Example
- Vessel List Integrations Example
OpenAPI overlays, including conversational phrasing for each operation.
Spectral rulesets for the provider's contracts.
Authentication, trust centre, and vulnerability disclosure.
Published plans, tiers and prices.
Published request limits.
What the API costs to run, by operation.
Links to the company's own pages. This repository publishes no copy of their specifications — the canonical document is theirs and lives at the URLs below.
- Website
- Documentation
- Getting started
- API reference
- Pricing
- Support
- Blog
- Terms of service
- Privacy policy
- GitHub
Kin Score 59.3 — strong · rubric 0.25.0 · scored 2026-10-23
| Facet | Score |
|---|---|
| Discoverability | 71.4 |
| Contract quality | 65.3 |
| Contract governance | 45.5 |
| Operational transparency | 50.0 |
| Developer ergonomics | 73.2 |
| Access clarity | 71.1 |
Agent readiness 32.2 — agent-ready
| Agent-readiness dimension | Result |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived (partial credit) |
| Reversibility Documented | — |
| MCP Server | — |
| Auth Clarity | bearer (partial credit) |
| Idempotency | — |
| Error Semantics | documented (partial credit) |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented (partial credit) |
| Event Surface Described | yes |
| Agent Skills | derived (partial credit) |
| Well Known Catalog | — |
| Consent Identity | — |
| Agent Card | — |
| Dry Run Mode | — |
| Delegated Identity | — |
| Protected Resource Metadata | — |
| Dynamic Client Registration | — |
| Agentic Commerce | — |
| Pagination Ratio | na |
| Operation Distinctiveness | — |
Regulatory alignment 29.4 — Horizontal (data, software, accessibility, platform)
The rubric is published at github.com/api-evangelist/kin-score. The per-check breakdown behind these numbers — which checks were earned, partial or missed — along with score history and how this provider compares to its peers, is available at apis.io/providers/vessel/.
API Evangelist profiles a company's public API surface the way a developer would find it: the website, developer portal and documentation, the specifications it publishes, its public repositories, and its pricing, status and changelog pages. From that it derives the properties above — contracts split per API, workflows, schemas, collections, governance rules, plans and rate limits — and scores them against the published Kin Score rubric.
The artifacts are published on APIs.io, not in this repository. This repository is the public record for Vessel: the place to say something is wrong, missing or out of date, and to ask for a re-score or a removal.
- Something about this listing — a wrong description, a missing API, a stale artifact or a question about the rating: open an issue on this repository.
- A new API, or one that is not in the catalog yet — submit it on APIs.io.
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