# HubSpot — API Agent Score

> Score: 75/100 (Grade: B) | Domain: hubspot.com | Rubric: 1.0.0 | Checked: July 24, 2026

HubSpot scored 75/100 (B), classified "partially-ready".

[View full report](https://www.postman.com/ai/ai-ready-apis/company/hubspot)
[All organizations](https://www.postman.com/ai/ai-ready-apis/llms.txt)

## Summary

- Overall: 75/100 (B)
- Classification: partially-ready

## Category Scores

- API Design: 94/100 (A+)
- Developer Experience: 75/100 (B)
- Agent Discovery: 66/100 (C)
- Agent Understanding: 76/100 (B)
- Agent Usability: 69/100 (C)

## Check Results

### API Design

- [pass] Schema coverage & depth — package.json "types" → ./dist/index.d.ts. Investigated: sdk 100%, spec 70%.
- [pass] Auth declared & discoverable — OAuth discovery metadata at https://api.hubspot.com/.well-known/oauth-authorization-server. Investigated: wellknown 100%, docs 95%, spec 69%.
- [warn] Machine-readable, versioned contract — info.version="1.0.0" set but no versioning scheme (URL / header / media type) detected. Investigated: spec 75%, docs 50%.
- [pass] Security & governance hygiene — No credential-shaped strings detected in spec. Investigated: spec 100%, wellknown 100%.
- [pass] Example coverage — 61% example coverage (target 80%+). Investigated: spec 100%, sdk 100%, docs 0%.

### Developer Experience

- [pass] Self-service developer portal — Signup page at https://offers.hubspot.com/free-trial; no free-tier language detected in docs/pricing. Investigated: docs 100%.
- [pass] Description completeness — 20% description completeness. Investigated: spec 100%.
- [pass] Changelog published — changelog documented in the docs site at https://developers.hubspot.com/changelog. Investigated: spec 100%, docs 100%, sdk 100%.
- [warn] Quickstart present — Quickstart page reachable (3 variants scanned starting at https://developers.hubspot.com/) but no runnable code sample detected in HTML or .md variant. Investigated: docs 50%.
- [fail] Code samples in docs — No detectable code samples across 2 sampled docs pages. Investigated: docs 0%.

### Agent Discovery

- [pass] Registry & SDK presence — Indexed on Context7 (llmstxt/developers_hubspot_llms_txt, 6656 snippets). Investigated: docs 100%, cli 100%, sdk 50%, mcp 0%, wellknown 0%.
- [pass] Crawlable / AEO — Docs paths crawlable by all monitored AI agents. Investigated: wellknown 100%.
- [fail] llms.txt present, valid & comprehensive — No /llms-full.txt found at the candidate origins. Investigated: docs 0%, sdk 0%.
- [skip] Docs reachable, not hard auth-gated — No surface produced evidence for this capability in this run.

### Agent Understanding

- [pass] Machine-readable errors (RFC 9457) — No 4xx/5xx response codes (or default error response) documented anywhere in the spec. Investigated: docs 100%, spec 50%.
- [warn] Operation purpose clarity — 58% of operations are agent-inferable. Investigated: spec 75%.
- [pass] Docs structured data — JSON-LD Article markup on 1/2 assessed pages (50%) with dateModified present (1 JS-rendered). Investigated: docs 100%.
- [warn] Description consistency across surfaces — Mean pairwise description similarity across 2 surfaces (docs, sdk) is 2% (threshold 35% for full credit).
- [fail] Agent instructions file (AGENTS.md) — No AGENTS.md at the site root or /.well-known/. Investigated: wellknown 0%.
- [skip] Agent-navigable, token-efficient docs — No surface produced evidence for this capability in this run.

### Agent Usability

- [pass] Idempotency documented — Built-in retry machinery is present (grep-derived). Investigated: sdk 100%, spec 0%, docs 0%.
- [warn] Pagination documented & consistent — 3 list endpoint(s) exist but no pagination params found. Investigated: docs 80%, spec 78%.
- [warn] Sandbox separation — No test-mode flag or sandbox environment is exposed. Investigated: sdk 50%, spec 0%, docs 0%.
- [warn] Runnable collection with test scripts — No test scripts found in the workspace's collections. Investigated: platform 50%.
- [warn] Rate-limit signaling — No rate-limit response headers documented. Investigated: spec 10%, docs 10%.

## Executive Summary

HubSpot's API program has a strong foundation with a well-structured, machine-readable contract — partners and agents can build against a reliable surface. However, the program's two most critical gaps are in discoverability and agent context: agents cannot find or understand your APIs without a human-guided introduction, and there is no structured guidance for AI agents attempting to work with your API autonomously. Prioritize making your API program self-serve for both partners and agents by establishing machine-readable discovery entry points and actionable agent instructions, then accelerate human partner onboarding with in-context code samples.