API Evangelist Trend Report
The State of Retention and Expansion APIs
20 companies scored, every one named and banded. Kin Score median 49.4, Agent Readiness median 40.3. Twenty companies, and four of the market's own core terms carry no company at all. This is the one area in the report where coverage is a live question.
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Retention & Expansion
Grouped by Kin Score band and ranked by composite score within each, with the separate agent-readiness score alongside. Click the scores on any row to open the full facet and dimension breakdown behind both numbers, and click again to close it.
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20 providers
Exemplar 3 66+ Reference-quality API operations across every facet.
1
Ada Exemplar agent native
Ada is an AI-powered customer service automation platform that enables enterprises to deploy AI agents capable of resolving customer inquiries across digital...
Composite
82.3
Agent
66.2
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 82.3/100 · exemplar
Contract Quality
18.8 / 25
Developer Ergonomics
17.4 / 20
Commercial Clarity
17.9 / 20
Operational Transparency
8.2 / 13
Governance
10.8 / 12
Discoverability
9.3 / 10
Agent readiness — 66/100 · agent native
Machine-Readable Contract
18 / 18
Agentic Access Contract derived
2.5 / 10
MCP Server
12 / 12
Machine-Readable Auth
10 / 10
Idempotency documented
4.5 / 9
Stable Error Semantics
8.0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
2
HubSpot Exemplar agent ready
HubSpot is an AI-native customer platform built around the Smart CRM, unifying marketing, sales, customer service, content, commerce and operations on a sing...
Composite
79.3
Agent
63.5
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 79.3/100 · exemplar
Contract Quality
19.7 / 25
Developer Ergonomics
20.0 / 20
Commercial Clarity
15.3 / 20
Operational Transparency
9.2 / 13
Governance
8.3 / 12
Discoverability
6.9 / 10
Agent readiness — 64/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract derived
2.5 / 10
MCP Server
12 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
8.0 / 8
Request/Response Examples
7.0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface derived
1.5 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
3 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
3
SugarCRM Exemplar agent ready
SugarCRM — rebranded as SugarAI in April 2026, with www.sugarcrm.com now redirecting to www.sugarai.com — is a B2B sales CRM platform serving 4,000+ customer...
Composite
66.8
Agent
40.1
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 66.8/100 · exemplar
Contract Quality
12.9 / 25
Developer Ergonomics
14.3 / 20
Commercial Clarity
18.4 / 20
Operational Transparency
10.9 / 13
Governance
1.5 / 12
Discoverability
8.7 / 10
Agent readiness — 40/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
0 / 10
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics documented
4.0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
6 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
3 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
Strong 3 56 – 65.9 Solid contracts, transparent operations, and an easy start.
4
Reachdesk Strong agent ready
Reachdesk is a global B2B corporate gifting and direct mail platform that enables sales, marketing, and customer success teams to send physical gifts, brande...
Composite
64.0
Agent
59.0
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 64.0/100 · strong
Contract Quality
18.3 / 25
Developer Ergonomics
13.5 / 20
Commercial Clarity
18.4 / 20
Operational Transparency
3.8 / 13
Governance
2.5 / 12
Discoverability
7.6 / 10
Agent readiness — 59/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
0 / 10
MCP Server
12 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics documented
4.0 / 8
Request/Response Examples
7.0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
5
Constant Contact Strong agent ready
Constant Contact is a small-business email and digital marketing platform offering email campaigns, automation, SMS, contact management, surveys, and events....
Composite
63.6
Agent
44.1
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 63.6/100 · strong
Contract Quality
17.5 / 25
Developer Ergonomics
13.0 / 20
Commercial Clarity
9.5 / 20
Operational Transparency
6.8 / 13
Governance
9.5 / 12
Discoverability
8.2 / 10
Regulatory · Telecommunications
8.7 / 15
Agent readiness — 44/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract derived
2.5 / 10
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics documented
4.0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
6
Knownwell Strong agent ready
Knownwell is an AI-powered commercial intelligence platform for B2B professional services firms, built around client retention and expansion rather than new-...
Composite
56.0
Agent
43.2
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 56.0/100 · strong
Contract Quality
12.3 / 25
Developer Ergonomics
13.4 / 20
Commercial Clarity
12.1 / 20
Operational Transparency
7.5 / 13
Governance
2.5 / 12
Discoverability
8.2 / 10
Agent readiness — 43/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract derived
2.5 / 10
MCP Server derived
3.0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
8.0 / 8
Request/Response Examples documented
1.8 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
0 / 6
Agent Skills derived
1.3 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
Developing 6 42 – 55.9 Real signal across most facets with visible, nameable gaps.
7
Replicant Developing agent ready
Replicant is an enterprise agentic customer service platform that automates high-volume contact center conversations across voice, chat, and messaging, and a...
Composite
53.1
Agent
57.2
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 53.1/100 · developing
Contract Quality
17.4 / 25
Developer Ergonomics
4.8 / 20
Commercial Clarity
15.8 / 20
Operational Transparency
5.1 / 13
Governance
2.5 / 12
Discoverability
7.6 / 10
Agent readiness — 57/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
10 / 10
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics documented
4.0 / 8
Request/Response Examples
7.0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
8
involve.me Developing agent ready
involve.me is an AI quiz, form and funnel builder with built-in email automation and a lightweight CRM, operated by stereosense GmbH and used by marketing te...
Composite
52.5
Agent
47.3
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 52.5/100 · developing
Contract Quality
12.9 / 25
Developer Ergonomics
7.0 / 20
Commercial Clarity
18.4 / 20
Operational Transparency
5.1 / 13
Governance
1.5 / 12
Discoverability
7.6 / 10
Agent readiness — 47/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
0 / 10
MCP Server
12 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
6 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
3 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
9
Bonjoro Developing agent ready
Bonjoro is a personal-video customer engagement platform operated by Vimily Pty Ltd of Sydney, Australia. Sales, marketing, customer success and education te...
Composite
50.5
Agent
48.6
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 50.5/100 · developing
Contract Quality
13.6 / 25
Developer Ergonomics
7.8 / 20
Commercial Clarity
15.3 / 20
Operational Transparency
3.8 / 13
Governance
2.5 / 12
Discoverability
7.6 / 10
Agent readiness — 49/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
0 / 10
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
8.0 / 8
Request/Response Examples partial
3.5 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
10
Cast Corporation Developing agent ready
Cast Corporation (Cast.app) is an AI-agent platform that automates customer success and post-sales revenue operations for B2B SaaS and technology companies. ...
Composite
49.7
Agent
37.4
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 49.7/100 · developing
Contract Quality
12.9 / 25
Developer Ergonomics
11.7 / 20
Commercial Clarity
14.2 / 20
Operational Transparency
1.7 / 13
Governance
1.5 / 12
Discoverability
7.6 / 10
Agent readiness — 37/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
0 / 10
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics documented
4.0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
6 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
11
Matik Developing agent ready
Matik is a data-driven content automation platform that generates personalized presentations, documents, spreadsheets, reports, and emails directly from conn...
Composite
49.1
Agent
49.3
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 49.1/100 · developing
Contract Quality
12.9 / 25
Developer Ergonomics
13.4 / 20
Commercial Clarity
10.0 / 20
Operational Transparency
3.8 / 13
Governance
1.5 / 12
Discoverability
7.6 / 10
Agent readiness — 49/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
0 / 10
MCP Server
12 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics documented
4.0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
6 / 6
Agent Skills derived
1.3 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
12
Noded AI Developing agent aware
Noded AI is a customer context graph for customer success, retention, and growth teams. It consumes customer data scattered across 20+ tools — call recording...
Composite
45.0
Agent
31.1
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 45.0/100 · developing
Contract Quality
0.0 / 25
Developer Ergonomics
14.8 / 20
Commercial Clarity
18.4 / 20
Operational Transparency
2.7 / 13
Governance
1.5 / 12
Discoverability
7.6 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 10
MCP Server
12 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics documented
4.0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
0 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
Thin 4 28 – 41.9 Limited machine-readable signal beyond documentation a human can read.
13
Whisperr, Inc. Thin agent ready
Whisperr, Inc. builds an autonomous customer-retention platform that detects churn risk and acts on it automatically, without a lifecycle marketing team oper...
Composite
41.1
Agent
40.5
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 41.1/100 · thin
Contract Quality
12.1 / 25
Developer Ergonomics
13.5 / 20
Commercial Clarity
4.7 / 20
Operational Transparency
0.7 / 13
Governance
2.5 / 12
Discoverability
7.6 / 10
Agent readiness — 41/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
0 / 10
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency documented
4.5 / 9
Stable Error Semantics documented
4.0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
0 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
14
2X Thin agent aware
2X is a B2B go-to-market services company that delivers what it calls GTM Human-Agentic Services — AI agents, expert embedded teams, and intelligent workflow...
Composite
38.0
Agent
31.1
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 38.0/100 · thin
Contract Quality
12.3 / 25
Developer Ergonomics
5.7 / 20
Commercial Clarity
2.1 / 20
Operational Transparency
6.2 / 13
Governance
2.5 / 12
Discoverability
9.3 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract
18 / 18
Agentic Access Contract
0 / 10
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
8.0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
0 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
15
Gigacatalyst Thin agent aware
Gigacatalyst (Giga Next Inc.) is a Y Combinator-backed enterprise AI platform that embeds an API-connected app builder directly into B2B SaaS products, so th...
Composite
32.4
Agent
23.9
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 32.4/100 · thin
Contract Quality
0.0 / 25
Developer Ergonomics
11.7 / 20
Commercial Clarity
8.4 / 20
Operational Transparency
2.1 / 13
Governance
1.5 / 12
Discoverability
8.7 / 10
Agent readiness — 24/100 · agent aware
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 10
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics documented
4.0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
0 / 6
Agent Skills
5 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
16
DAS Technology Thin agent ready
DAS Technology (formerly Digital Air Strike) is an automotive-retail marketing and customer-experience technology company serving more than 9,300 dealerships...
Composite
31.1
Agent
38.3
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 31.1/100 · thin
Contract Quality
8.0 / 25
Developer Ergonomics
4.3 / 20
Commercial Clarity
6.8 / 20
Operational Transparency
0.7 / 13
Governance
2.5 / 12
Discoverability
8.7 / 10
Agent readiness — 38/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
0 / 10
MCP Server
12 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
0 / 6
Agent Skills
5 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
Emerging 2 13 – 27.9 More than an index entry but still mostly links rather than artifacts.
17
Base Ai Emerging agent aware
Base is an AI Engagement OS for customer-led growth (CLG). The platform unifies advocacy, references, referrals, reviews, community, customer success, lifecy...
Composite
24.4
Agent
15.8
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 24.4/100 · emerging
Contract Quality
0.0 / 25
Developer Ergonomics
3.5 / 20
Commercial Clarity
10.0 / 20
Operational Transparency
4.1 / 13
Governance
0.0 / 12
Discoverability
6.9 / 10
Agent readiness — 16/100 · agent aware
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 10
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
18
Jigso Emerging human only
Jigso is a proactive AI operating system for enterprises that synthesizes data from across a company's business applications - CRM, support, communication, a...
Composite
20.4
Agent
3.2
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 20.4/100 · emerging
Contract Quality
0.0 / 25
Developer Ergonomics
1.3 / 20
Commercial Clarity
10.0 / 20
Operational Transparency
0.0 / 13
Governance
1.5 / 12
Discoverability
7.6 / 10
Agent readiness — 3/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 10
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
Minimal 2 0 – 12.9 Index entry only; little beyond a description and a link.
19
Involve.AI Minimal human only
Involve.AI was an AI-driven customer intelligence platform for customer success and revenue teams. It unified data from CRM, support, product-usage, and bill...
Composite
8.8
Agent
3.2
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 8.8/100 · minimal
Contract Quality
0.0 / 25
Developer Ergonomics
2.6 / 20
Commercial Clarity
0.0 / 20
Operational Transparency
0.7 / 13
Governance
0.0 / 12
Discoverability
5.7 / 10
Regulatory · Health
1.1 / 15
Agent readiness — 3/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 10
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling documented
3.5 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4
20
HiCustomer Minimal human only
HiCustomer (ハイカスタマー) was a Japanese Customer Success Management (CSM) SaaS built specifically for SaaS companies. Its platform aggregated customer data scatt...
Composite
4.3
Agent
0.0
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Composite quality — 4.3/100 · minimal
Contract Quality
0.0 / 25
Developer Ergonomics
0.0 / 20
Commercial Clarity
0.0 / 20
Operational Transparency
0.0 / 13
Governance
0.0 / 12
Discoverability
5.0 / 10
Regulatory · Health
0.0 / 15
Agent readiness — 0/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 10
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Dry-Run / Simulate Mode
0 / 4