# Nango — API Agent Score

> Score: 77/100 (Grade: B) | Domain: nango.dev | Rubric: 1.0.0 | Checked: July 24, 2026

Nango scored 77/100 (B), classified "partially-ready".

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

## Summary

- Overall: 77/100 (B)
- Classification: partially-ready

## Category Scores

- API Design: 87/100 (A)
- Developer Experience: 63/100 (C)
- Agent Discovery: 97/100 (A+)
- Agent Understanding: 70/100 (B)
- Agent Usability: 71/100 (B)

## Check Results

### API Design

- [pass] Auth declared & discoverable — Authentication required (global or on every operation). Investigated: spec 100%, docs 100%.
- [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%.
- [warn] Schema coverage & depth — 87% of operations have documented schemas (target 95%+). Investigated: spec 67%, sdk 31%.
- [pass] Security & governance hygiene — No credential-shaped strings detected in spec. Investigated: spec 100%, wellknown 100%.
- [pass] Example coverage — README is present and includes a runnable quickstart. Investigated: sdk 100%, spec 0%, docs 0%.

### Developer Experience

- [pass] Quickstart present — Quickstart at https://nango.dev/quickstart with a runnable first-call sample. Investigated: docs 100%.
- [pass] Description completeness — 81% description completeness (target 90%+). Investigated: spec 100%, sdk 13%.
- [pass] Changelog published — changelog documented in the docs site at https://nango.dev/changelog. Investigated: spec 100%, docs 100%, sdk 100%.
- [fail] Self-service developer portal — No signup page detected across conventional paths (/signup, /sign-up, /register, /get-started, /console/signup, /dashboard/signup, /try, /try-free, /free, /free-trial, /start, /start-free). Investigated: docs 0%.
- [fail] Code samples in docs — No detectable code samples across 20 sampled docs pages. Investigated: docs 0%.

### Agent Discovery

- [pass] llms.txt present, valid & comprehensive — llms.txt found at 2 locations; using https://nango.dev/docs/llms.txt as canonical. Investigated: docs 100%, sdk 0%.
- [pass] Docs reachable, not hard auth-gated — All 1 pages are publicly accessible. Investigated: docs 100%.
- [pass] Registry & SDK presence — Indexed on Context7 (nangohq/nango, 9209 snippets). Investigated: docs 100%, sdk 33%, cli 0%, mcp 0%, wellknown 0%.
- [warn] Crawlable / AEO — Sitemap present (1 entries) but carries no lastmod values. Investigated: wellknown 75%.

### Agent Understanding

- [pass] Machine-readable errors (RFC 9457) — 9 distinct 4xx/5xx response codes documented. Investigated: docs 100%, spec 50%.
- [pass] Agent-navigable, token-efficient docs — All 1 pages contain server-rendered content. Investigated: docs 100%.
- [pass] Docs structured data — JSON-LD Article markup on 17/18 assessed pages (94%) with dateModified present. Investigated: docs 100%.
- [fail] Operation purpose clarity — 8% of operations are agent-inferable. Investigated: spec 0%.
- [fail] Agent instructions file (AGENTS.md) — No AGENTS.md at the site root or /.well-known/. Investigated: wellknown 0%.
- [skip] Description consistency across surfaces — Only 1 surface description(s) with ≥6 tokens available; need at least 2 to compare.

### Agent Usability

- [pass] Rate-limit signaling — rate-limit behavior documented in the docs site at https://nango.dev/docs/guides/functions/rate-limits. Investigated: spec 100%, docs 100%.
- [pass] Pagination documented & consistent — Pagination params detected on 5 list endpoint(s). Investigated: spec 100%, docs 100%.
- [pass] Sandbox separation — Sandbox environments are exposed (sandbox). Investigated: sdk 100%, spec 0%, docs 0%.
- [fail] Idempotency documented — 0% of mutating operations document idempotency. Investigated: spec 0%, docs 0%, sdk 0%.
- [fail] Runnable collection with test scripts — No public Postman workspace discovered for the org. Investigated: platform 0%.

## Executive Summary

Nango's API program shows strong foundations in design, contract machine-readability, and agent discoverability — partners and agents can find and parse the surface reliably. The critical gaps are in agent understanding and partner onboarding: operations lack the semantic clarity and instruction context that AI agents need to act autonomously, there is no self-serve portal with real code samples to get partners hands-on quickly, and the absence of a runnable collection with test scripts means neither partners nor their agents can validate integrations with confidence. Prioritize closing the agent-context and onboarding gaps first — they block the widest range of partner and agent workflows.