# DigiCert — API Agent Score

> Score: 71/100 (Grade: B) | Domain: digicert.com | Rubric: 1.0.0 | Checked: July 29, 2026

DigiCert scored 71/100 (B), classified "partially-ready".

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

## Summary

- Overall: 71/100 (B)
- Classification: partially-ready

## Category Scores

- API Design: 86/100 (A)
- Developer Experience: 58/100 (D)
- Agent Discovery: 85/100 (A)
- Agent Understanding: 71/100 (B)
- Agent Usability: 57/100 (D)

## Check Results

### API Design

- [pass] Auth declared & discoverable — Authentication required (global or on every operation). Investigated: docs 100%, spec 50%, wellknown 0%.
- [warn] Machine-readable, versioned contract — info.version="1.0.0" set but no versioning scheme (URL / header / media type) detected. Investigated: spec 79%, docs 58%.
- [warn] Schema coverage & depth — Only 66% of operations have documented schemas. Investigated: spec 64%, sdk 60%.
- [warn] Security & governance hygiene — 25 credential-shaped strings detected in spec: private-key-pem (×25). Investigated: spec 83%, wellknown 50%.
- [pass] Example coverage — 0% example coverage. Investigated: spec 100%, sdk 50%, docs 0%.

### Developer Experience

- [pass] Self-service developer portal — Self-service signup at https://www.digicert.com/account/signup/; no free tier or sandbox language detected. Investigated: docs 100%.
- [pass] Description completeness — 55% description completeness. Investigated: spec 100%, sdk 23%.
- [fail] Quickstart present — No quickstart/getting-started page found at the conventional paths. Investigated: docs 0%.
- [fail] Code samples in docs — No detectable code samples across 1 sampled docs pages. Investigated: docs 0%.
- [fail] Changelog published — No changelog URL or mention found in spec metadata. Investigated: spec 0%, docs 0%.

### Agent Discovery

- [pass] Registry & SDK presence — Indexed on Context7 (websites/digicert_en, 11133 snippets). Investigated: docs 100%, sdk 58%, cli 0%.
- [warn] llms.txt present, valid & comprehensive — Could not test any pages; 50 failed to fetch. Investigated: docs 75%, sdk 0%.
- [warn] Docs reachable, not hard auth-gated — Server ignores Accept: text/markdown header (0/50 sampled pages return markdown). Investigated: docs 75%.
- [warn] Crawlable / AEO — Sitemap present (679 entries) but carries no lastmod values. Investigated: wellknown 75%.

### Agent Understanding

- [pass] Machine-readable errors (RFC 9457) — error codes documented in the docs site at https://dev.digicert.com/certcentral-apis/services-api/errors.html. Investigated: docs 100%, spec 50%.
- [warn] Operation purpose clarity — 0% of operations are agent-inferable. Investigated: spec 83%.
- [warn] Agent-navigable, token-efficient docs — Could not fetch HTML for any pages to compare; 49 failed to fetch. Investigated: docs 70%.
- [warn] Description consistency across surfaces — Mean pairwise description similarity across 2 surfaces (spec, 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%.
- [fail] Docs structured data — Neither JSON-LD nor OpenGraph/meta tags detected across 1 assessed pages (1 JS-rendered). Investigated: docs 0%.

### Agent Usability

- [pass] Rate-limit signaling — rate-limit behavior documented in the docs site at https://dev.digicert.com/certcentral-apis/services-api/rate-limits.html. Investigated: spec 100%, docs 100%.
- [warn] Pagination documented & consistent — 5 list endpoint(s) exist but no pagination params found. Investigated: docs 50%, spec 46%.
- [warn] Sandbox separation — No test-mode flag or sandbox environment is exposed. Investigated: sdk 50%, 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

Digicert's API program shows strong foundations in API design, agent discovery, and documentation reachability — partners and agents can find and parse the surface without friction. The two areas that most threaten partner success are developer experience and agent usability: there is no changelog to guide partners through changes, no quickstart or inline code samples to accelerate a first integration, and no runnable collection for partners or their AI agents to execute real workflows against. Fixing these gaps — starting with onboarding and executable truth, then layering in agent-specific context — will move the program from one partners can find to one they can actually build on quickly.