# Craigslist — API Agent Score

> Score: 65/100 (Grade: C) | Domain: craigslist.org | Rubric: 1.0.0 | Checked: July 24, 2026

Craigslist scored 65/100 (C), classified "partially-ready".

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

## Summary

- Overall: 65/100 (C)
- Classification: partially-ready

## Category Scores

- API Design: 94/100 (A+)
- Developer Experience: 43/100 (F)
- Agent Discovery: 65/100 (C)
- Agent Understanding: 66/100 (C)
- Agent Usability: 59/100 (D)

## Check Results

### API Design

- [pass] Schema coverage & depth — package.json "types" → ./dist/index.d.ts. Investigated: sdk 100%, spec 67%.
- [pass] Auth declared & discoverable — Authentication required (global or on every operation). Investigated: spec 100%, docs 100%, wellknown 0%.
- [warn] Machine-readable, versioned contract — info.version="v1" 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 — 65% example coverage (target 80%+). Investigated: spec 100%, sdk 100%, docs 0%.

### Developer Experience

- [warn] Quickstart present — Quickstart page reachable (12 variants scanned starting at https://www.craigslist.org/about/help/) but no runnable code sample detected in HTML or .md variant. Investigated: docs 50%.
- [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 1 sampled docs pages. Investigated: docs 0%.
- [fail] Description completeness — 42% description completeness. Investigated: spec 0%.
- [fail] Changelog published — No changelog URL or mention found in spec metadata. Investigated: spec 0%, docs 0%, sdk 0%.

### Agent Discovery

- [warn] Docs reachable, not hard auth-gated — Server ignores Accept: text/markdown header (0/38 pages return markdown). Investigated: docs 75%.
- [warn] Registry & SDK presence — No MCP server, tool manifest, or list-tools capability is discoverable (server entrypoint: absent, tool manifest: unknown, list-tools: unknown). Investigated: sdk 50%, docs 0%, cli 0%.
- [warn] llms.txt present, valid & comprehensive — No llms.txt found at any candidate location (https://www.craigslist.org/about/bulk_posting_interface/llms.txt, https://www.craigslist.org/llms.txt, https://www.craigslist.org/docs/llms.txt); candidates redirected cross-host to https://sfbay.craigslist.org (agents can't follow cross-host redirects). Investigated: docs 33%, sdk 0%.
- [warn] Crawlable / AEO — Sitemap present (810 entries) but carries no lastmod values. Investigated: wellknown 75%.

### Agent Understanding

- [pass] Machine-readable errors (RFC 9457) — Only 3 distinct 4xx/5xx codes documented (plus 0 "default" catch-all responses). Investigated: docs 100%, spec 50%, sdk 0%.
- [warn] Agent-navigable, token-efficient docs — No pages support .md URLs (0/38 tested). Investigated: docs 71%.
- [warn] Operation purpose clarity — 86% of operations are agent-inferable (target 90%+). Investigated: spec 50%.
- [warn] Description consistency across surfaces — Mean pairwise description similarity across 2 surfaces (spec, docs) is 7% (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] Idempotency documented — Built-in retry machinery is present (grep-derived). Investigated: sdk 100%, spec 0%, docs 0%.
- [pass] Sandbox separation — sandbox documented in the docs site at https://www.craigslist.org/about/help/. Investigated: spec 100%, docs 100%, sdk 50%.
- [fail] Rate-limit signaling — No rate-limit response headers documented. Investigated: spec 0%, docs 0%.
- [fail] Pagination documented & consistent — 1 list endpoint(s) exist but no pagination params found. Investigated: spec 0%, docs 0%.
- [fail] Runnable collection with test scripts — No public Postman workspace discovered for the org. Investigated: platform 0%.

## Executive Summary

Craigslist's API contract itself is a genuine strength — the machine-readable spec is solid, giving partners a reliable foundation to build on. However, two areas are severely undermining partner program outcomes: developer experience (no self-service portal, no changelogs, thin descriptions, no code samples) and agent usability/understanding (no runnable collections, no rate-limit or pagination guidance, no agent instruction files or structured docs metadata). Fixing the onboarding and documentation surface first will unlock self-serve partner adoption; hardening agent-facing context and operational signals will make those integrations durable and automatable.