360 check, 9 Nov 2026
Mercado Libre on the pay layer: the 360 agent-readiness check
Mercado Libre scores 40 of 100 on Ora's agent-readiness scan, a D, read 14 Nov 2026. The six payment checks did not apply to mercadolibre.com on this read, which is how Ora treats a site it does not read as a shop. Three agents blocked and 39 characters for the rest, on the largest marketplace in Latin America.
On 14 Nov 2026 the public site at mercadolibre.com scored 40 of 100 on Ora's agent-readiness scan, a D. Mercado Libre is the largest online marketplace in Latin America, with its own payments arm, so this check reads the Payments layer first: the six checks that look for x402, MPP, UCP, ACP and AP2 on the domain, the same protocols this site's matrix tracks row by row. The other layers follow, with every check Ora ran and what it saw. Ora's one-line summary: Turns agents away at the door: JavaScript-rendered content and strict robots.txt crawler restrictions block access completely.
The score
| Layer | Points | Share | What the layer asks |
|---|---|---|---|
| Discovery | 11 of 15 | 73% | Can agents find and recommend it |
| Access | 14 of 54 | 26% | Can agents read it |
| Usability | 18 of 53 | 34% | Can agents use it |
| Payments | 0 of 0 | none apply | Can agents pay |
| Total | 40 of 100 | 40% | Grade D |
The pay layer
Ora did not run the six payment checks against mercadolibre.com on this read: it marks them not applicable on a site it does not read as a shop, so the layer has no maximum and costs nothing. A marketplace that sells online can still publish any of the five protocols; the matrix says which processors and platforms carry each one. Each protocol links to its matrix row, where the processors and platforms that carry it are dated and sourced.
| Payment check | Result | Points | Matrix row | What Ora saw |
|---|---|---|---|---|
| x402 | Does not apply | 0 of 2 | x402 in the matrix | No commerce signals detected - agent-payment protocols are optional for non-commerce sites |
| MPP | Does not apply | 0 of 2 | MPP in the matrix | No commerce signals detected - agent-payment protocols are optional for non-commerce sites |
| UCP | Does not apply | 0 of 3 | UCP in the matrix | No commerce signals detected - agent-payment protocols are optional for non-commerce sites |
| ACP | Does not apply | 0 of 3 | ACP in the matrix | No commerce signals detected - agent-payment protocols are optional for non-commerce sites |
| ACP delegate payment | Does not apply | 0 of 3 | ACP in the matrix | No commerce signals detected - agent-payment protocols are optional for non-commerce sites |
| AP2 | Does not apply | 0 of 3 | AP2 in the matrix | No commerce signals detected - agent-payment protocols are optional for non-commerce sites |
The other layers, check by check
Every check Ora ran on mercadolibre.com, grouped by layer, with the result, the points and what Ora recorded where its wording passes this site's gate.
Discovery: 11 of 15
| Check | Result | Points | What Ora saw |
|---|---|---|---|
| ARD discovery | Fail | 0 of 1 | No /.well-known/ard.json, no same-site rel="ard" link, and no legacy /.well-known/ai-catalog.json |
| Developer resource discoverability | Pass | 3 of 3 | Pass, no detail recorded. |
| Brand name discoverability | Partial | 1 of 3 | mercadolibre.com ranks #10 for "Mercado Libre" (searched your brand name alone: no main product term from your homepage qualified) |
| Wikipedia / Wikidata entity presence | Pass | 4 of 4 | Wikipedia "MercadoLibre" and Wikidata Q950419 both verified - domain confirmed on both sources |
| robots.txt AI crawler policy | Partial | 1 of 2 | AI search crawlers: allowed in 2 of 3 checks (3 crawlers on 1 page). AI training crawlers: allowed in 0 of 2 checks (2 crawlers on 1 page), not scored. robots.txt restricts 1/3 evaluated search page/crawler pairs. |
| NPM/PyPI SDK package | Pass | 1 of 1 | Pass, no detail recorded. |
| Agent platform configs | Fail | 0 of 1 | Could not locate a public repo containing agent configs or rules. If our probes missed it, AI coding agents likely will too - link the repo from your homepage or docs so it's discoverable. |
| Agent Plugins manifest | Fail | 0 of 1 | No Agent Plugins manifest (plugin.json) found in discovered repos |
| ChatGPT app listed | Fail | 0 of 2 | Not found in ChatGPT app directory |
| Homepage not hidden from search | Pass | 1 of 1 | No noindex on the homepage: no robots, googlebot or bingbot meta tag and no X-Robots-Tag header hides it from search. |
Access: 14 of 54
| Check | Result | Points | What Ora saw |
|---|---|---|---|
| Sitemap exists | Fail | 0 of 2 | No sitemap found |
| Content without JavaScript | Fail | 0 of 3 | Homepage: Very little text content (39 chars) - likely JS-rendered, invisible to AI crawlers. No inner pages checked: the scan found none to sample. |
| Not blocked by bot detection | Partial | 1 of 2 | Some agents blocked: ChatGPT-User, Claude-User, PerplexityBot. A normal browser visit from us got in. |
| Agent discovery file | Fail | 0 of 2 | No agent discovery file found |
| A2A / agent-card | Fail | 0 of 2 | No A2A agent card found at /.well-known/agent-card.json |
| Listed on skills.sh | Fail | 0 of 1 | No official skills self-published on skills.sh (26 community skills with potential relation to this domain found, but only self-published official skills count) |
| pricing.md exists | Fail | 0 of 2 | No pricing.md found - agents need machine-readable pricing to compare products and make purchase recommendations |
| NLWeb Schema Feeds | Fail | 0 of 1 | No schemamap: directive in robots.txt |
| MCP well-known discovery | Fail | 0 of 2 | No MCP server URL discovered |
| Agent mode view | Fail | 0 of 2 | ?mode=agent returns same content as homepage (no dedicated agent view) |
| HTTP Link headers (RFC 8288) | Fail | 0 of 1 | No HTTP Link response headers (RFC 8288) found |
| Markdown URL fallback | Fail | 0 of 2 | Homepage does not support the .md suffix. Probed https://mercadolibre.com/index.md and it did not return markdown (expected text/markdown content-type or a heading-led non-HTML body). |
| Modular llms.txt per product area | Fail | 0 of 1 | No section-level llms.txt found. Tried /docs/llms.txt, /api/llms.txt, /developers/llms.txt, /guides/llms.txt, /reference/llms.txt. This is a bonus check: it can add a point and never costs one. |
| robots.txt agent-user policy | Fail | 0 of 2 | robots.txt restricts 3/3 evaluated page/crawler pairs. Checked 3 user-triggered agents (chatgpt-user, claude-user, perplexity-user) on 1 public page. Restricted: chatgpt-user at https://mercadolibre.com/ (Disallow: / |
| llms.txt exists | Partial | 0 of 1 | A file is present at https://developers.mercadolibre.com/.well-known/llms.txt, but it returns an HTML page rather than a plain-text llms.txt. |
| llms.txt formatting | Fail | 0 of 2 | No llms.txt found to evaluate quality |
| JSON-LD structured data | Fail | 0 of 4 | No JSON-LD structured data found on homepage |
| Pricing info accessible | Fail | 0 of 3 | No pricing page or pricing data found |
| Public API/docs linked from homepage | Pass | 3 of 3 | Documentation site found at https://developers.mercadolibre.com |
| Agent instruction / when-to-use | Fail | 0 of 3 | No agent instruction file with when-to-use guidance found |
| Skills.sh skill quality | Fail | 0 of 2 | No official skills on skills.sh to evaluate |
| JSON-LD entity linking (sameAs) | Fail | 0 of 2 | No JSON-LD found - no entity linking possible |
| Metadata completeness | Partial | 1 of 2 | Only 1/4 metadata signals present - missing: HTML lang attribute, og:image, og:type |
| Organization schema completeness | Fail | 0 of 2 | No JSON-LD found - Organization schema missing |
| Schema type breadth | Fail | 0 of 2 | No extended schema types found - AI can only answer basic questions about this entity |
| Trust anchor pages | Partial | 1 of 2 | Only Privacy page verified - missing: About, Contact |
| Markdown alternate link | Fail | 0 of 1 | No sampled page advertises a markdown alternate. Add <link rel="alternate" type="text/markdown" href="..."> (or the equivalent Link response header) pointing at a markdown twin of the page. |
| Redirect hygiene | Pass | 1 of 1 | Pass, no detail recorded. |
| Page token budget | Pass | 1 of 1 | All 1 measured page fit an agent context budget (largest ~1K tokens) |
| OpenAPI spec published | Fail | 0 of 7 | No OpenAPI/Swagger specification found |
| Developer portal | Pass | 6 of 6 | Developer documentation portal found at https://developers.mercadolibre.com |
| API catalog (RFC 9727) | Fail | 0 of 2 | No /.well-known/api-catalog found (RFC 9727) |
| Markdown agent docs | Fail | 0 of 1 | Missing markdown content negotiation. Homepage returned text/html when probed with Accept: text/markdown (expected text/markdown), and none of the well-known root paths (/llms.md, /auth.md, /agents.md, /developers.md |
| Markdown content negotiation (acceptmarkdown.com) | Fail | 0 of 1 | Homepage https://mercadolibre.com does not meet the Markdown negotiation requirements: Accept: text/markdown returned text/html; Vary header missing Accept (got "none") |
| Bot-UA markdown serving | Fail | 0 of 1 | No probed bot User-Agent (ChatGPT-User, Claude-User, Perplexity-User) receives markdown when requesting HTML. Optional: detect AI-bot UAs server-side and serve them a markdown representation directly. |
| Agent crawler reachability | Partial | 0 of 2 | Some agents are blocked - ChatGPT-User: blocked, OAI-SearchBot: reachable, Claude-User: blocked, PerplexityBot: blocked. A normal browser visit from us got in. |
Usability: 18 of 53
| Check | Result | Points | What Ora saw |
|---|---|---|---|
| Public API with reachable endpoints | Partial | 3 of 7 | Documentation site found at https://developers.mercadolibre.com but API content unclear. Best-of-protocols score: 3/7. |
| OAuth 2.0 support | Fail | 0 of 5 | No OAuth 2.0 or OpenID Connect support detected |
| Scoped permissions | Fail | 0 of 5 | No declared OAuth scopes, security schemes, or scoped-permission documentation found |
| Agent onboarding friction | Partial | 1 of 2 | Onboarding signals described but not verified live: sandbox/test environment |
| Web Bot Auth directory | Fail | 0 of 2 | No /.well-known/http-message-signatures-directory found |
| OAuth Protected Resource metadata (RFC 9728) | Fail | 0 of 2 | No /.well-known/oauth-protected-resource found (RFC 9728) |
| auth.md exists | Fail | 0 of 2 | No /auth.md found at site root |
| auth.md structure | Fail | 0 of 2 | No /auth.md found at site root |
| Agent auth discovery metadata | Fail | 0 of 3 | Neither /.well-known/oauth-protected-resource nor /.well-known/oauth-authorization-server found. Probed: mercadolibre.com, api.mercadolibre.com. |
| Agent auth WWW-Authenticate hint | Fail | 0 of 1 | No 401 with WWW-Authenticate: Bearer resource_metadata=... found. Probed [https://mercadolibre.com/api, https://mercadolibre.com/api/v1, https://mercadolibre.com/v1, https://mercadolibre.com/v2, https://mercadolibre.com/agent/identity |
| agent_auth endpoints reachable | Fail | 0 of 2 | No agent_auth endpoint URIs found in AS metadata or /auth.md prose; nothing to probe |
| MCP server / manifest | Fail | 0 of 6 | No MCP server or manifest found |
| WebMCP support | Fail | 0 of 5 | No WebMCP support detected - no document.modelContext / navigator.modelContext usage found |
| JSON error responses | Pass | 4 of 4 | Pass, no detail recorded. |
| CLI tool available | Fail | 0 of 3 | No CLI tool found |
| Multi-language SDK packages | Partial | 2 of 3 | SDK packages found in npm, rubygems |
| NLWeb /ask endpoint | Fail | 0 of 1 | No NLWeb-conformant /ask endpoint found via GET or POST |
| NLWeb streaming support | Fail | 0 of 1 | NLWeb /ask does not support SSE streaming via GET or POST |
| MCP server-card.json | Fail | 0 of 2 | No MCP server card found (checked /.well-known/mcp/server-card.json, the site's ai-catalog.json, servers[].card in mcp.json, and <server>/server-card) |
| Product + docs MCP coverage | Fail | 0 of 2 | This bonus needs two MCP servers: one for your product so agents can take actions, and a separate one for your documentation so agents can answer questions from your docs. |
| Sandbox / test environment | Fail | 0 of 2 | No sandbox or test environment found |
| Agent-friendly 404s | Partial | 1 of 2 | The nonexistent path https://mercadolibre.com/__ora-404-probe-zmbjg3wz correctly returns HTTP 404. Partial credit: no Markdown error body was detected. |
| Native interactive controls | Pass | 3 of 3 | Pass, no detail recorded. |
| Accessible names on controls | Pass | 2 of 2 | Pass, no detail recorded. |
| Accessibility-tree injection safety (bonus) | Pass | 2 of 2 | Pass, no detail recorded. |
| API schema complexity analysis | Fail | 0 of 2 | No API schema detected |
| Function calling compatibility | Fail | 0 of 2 | No API spec found - function calling requires discoverable endpoints |
The fixes worth most points
Ora attaches an estimate to each failing or partial check: how many points the site would gain by passing it. These are the 5 with the largest estimates for Mercado Libre.
- MCP server / manifest
- Fail, 0 of 6, about 5 points to gain. Ora saw:
No MCP server or manifest found
. - OpenAPI spec published
- Fail, 0 of 7, about 4.3 points to gain. Ora saw:
No OpenAPI/Swagger specification found
. - OAuth 2.0 support
- Fail, 0 of 5, about 4.2 points to gain. Ora saw:
No OAuth 2.0 or OpenID Connect support detected
. - Scoped permissions
- Fail, 0 of 5, about 4.2 points to gain. Ora saw:
No declared OAuth scopes, security schemes, or scoped-permission documentation found
. - WebMCP support
- Fail, 0 of 5, about 4.2 points to gain. Ora saw:
No WebMCP support detected - no document.modelContext / navigator.modelContext usage found
.
Our read
Mercado Libre turns the agents away and renders nothing for the ones it lets in. Ora's probe found ChatGPT-User, Claude-User and PerplexityBot blocked while a normal browser got in, robots.txt allows two of three search crawlers and neither training crawler, and the home page gives 39 characters of text without JavaScript, so the content row fails and the six payment checks did not apply because no commerce signal could be read from the largest marketplace in Latin America. developers.mercadolibre.com is a real portal, but its llms.txt returns an HTML page and the API content Ora could read scored 3 of 7; it found no OpenAPI specification, no MCP server and no OAuth discovery, on a company whose payments arm processes much of the region's online commerce. There is no sitemap and no JSON-LD, and the domain ranks tenth for its own name. The door and the template are both in the way; the door is the cheaper fix.
Test your own checkout
The scan above is free and needs no account: enter a domain at ora.ai and read the same layers for your own site, with the six payment checks mapped to this matrix on the Ora Payments page. The command below runs the same audit from a terminal and exits with 1 under the score you set, so it can gate a deploy. Why Ora, and its limits.
npx ax@0.10 audit https://example.com --min-score 70All 360 checks, one company a day. Corrections to the corrections page.
Sources
- ora.ai/api/score/mercadolibre.com, Ora's scan (vendor), read 14 Nov 2026
- Ora check catalog (GET /api/checks), read 14 Nov 2026
- mercadolibre.com, the company's site, read 14 Nov 2026
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