Ecosystem Discovery Analysis / buildwithfern.com

Agent-Readiness Index Report

score_version: ars-3.0.0 · ARS methodology

Enterprise Audit
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Executive PDF
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47
DGrade
/ 100
AI-CAPABLE ECOSYSTEM
Agent Ecosystem Discovery
buildwithfern.com
Archetype: Developer Platform & APIDenominator: 86 pts
Partial exploration capabilities. Lacks critical schemas or machine-indexing entrypoints.
FrameworkMintlify
Surfaces
11/13
Large Pages
0pgs
Nav Gap
0pts
Developer Track & MCP Parity
Inspect in CLI or test live agent trajectories in Flight Simulator
Flight Simulator
Surface Inventory11 of 13 active
✓
sitemap.xml Index
ACTIVE
✓
llms.txt Index
ACTIVE
–
llms-full.txt Spec
MISSING
✓
OpenAPI Schema
ACTIVE
✓
MCP Configuration
ACTIVE
✓
GitHub Repository
ACTIVE
✓
Documentation Root
ACTIVE
✓
API Reference
ACTIVE
✓
Company Blog
ACTIVE
✓
Developer Auth
ACTIVE
✓
App Dashboard
ACTIVE
–
Developer Changelog
MISSING
✓
Status Page
ACTIVE
ARS 3.0 Machine Topology MapSub-5s Discovered Surfaces
Visual graph connecting verified machine-readable endpoints across the target ecosystem.
Active
Missing
Partial
buildwithfern.comactive

Host ecosystem entrypoint for autonomous agents.

Inspect Endpoint
ARS 3.0 Standard · 4-Layer Dynamic Architecture119 Discrete Checks
Layer 1: Discovery1/16 checks passed
5/20
Remediate
Layer 2: Access & Understanding17/41 checks passed
21/30
Needs attention+1 bonus
Layer 3: Usability & Interoperability13/56 checks passed
14/35
Needs attention
Layer 4: Payments & Machine Commerce0/6 checks passed
0/0
N/A (Skipped)

Problems

32 detected
●Generate Agent Resource Discovery (ard.json)
discovery

Missing /.well-known/ard.json (ARD v0.91) specification

Target:public/.well-known/ard.json
●registry-branding
discovery

MCP manifest branding missing or incomplete at /.well-known/mcp/manifest.json

●npm-sdk-package
payments

No official SDK package found under scope buildwithfern

●agent-rules-repo
payments

Missing autonomous agent guideline rules (.claude/rules or .cursorrules)

●skills-sh-listed
payments

Not listed in skills.sh verified skills registry

●Ensure Server-Rendered Semantic HTML
access

Zero-JS readability issues: <500 chars prose; missing <h1>;

Target:app/page.tsx
●llms-txt-formatting
access

llms.txt formatting does not meet ARS 3.0 standards (>=5 lines, markdown links)

●markdown-negotiation
payments

Server does not return markdown when requested via Accept: text/markdown

●cors-headers
payments

CORS Access-Control-Allow-Origin header not present on root

●clean-semantic-html
payments

Semantic landmarks need improvement

●meta-description-quality
payments

Missing meta description tag

●json-ld-structured-data
payments

JSON-LD structured data not declared

●sitemap-xml-present
payments

sitemap.xml not accessible at root

●canonical-url-present
payments

Missing rel=canonical tag

●text-density-ratio
payments

Text density ratio: 0%

●security-headers-csp
payments

Content-Security-Policy or security headers missing

●Mount Streamable HTTP MCP Server
usability

No active MCP server endpoint detected

Target:app/api/mcp/route.ts
●mcp-tools-listing
usability

MCP tools listing unavailable

●mcp-tools-breadth
usability

Product MCP lacks tool breadth (<3 tools)

●mcp-tools-schema-strict
usability

Tool schema strict typing unverified

●mcp-auth-requirement
usability

Product MCP authentication protocol verified

●mcp-transport-streamable
usability

Modern Streamable HTTP MCP transport handler active (/api/mcp)

●mcp-transport-sse
usability

SSE channel available for real-time progress streaming

●auth-md-stage-discover
usability

Stage 1 (Discover) missing

●auth-md-stage-methods
usability

Stage 2 (Methods) missing

●auth-md-stage-register
usability

Stage 3 (Register) missing

●auth-md-stage-claim
usability

Stage 4 (Claim) missing

●auth-md-stage-exchange
usability

Stage 5 (Exchange) missing

●auth-md-stage-use
usability

Stage 6 (Use) missing

●auth-md-stage-errors
usability

Stage 7 (Errors) missing

●auth-md-stage-revocation
usability

Stage 8 (Revocation) missing

●api-idempotency-keys
payments

Idempotency-Key support not detected on mutation routes

Solutions

3 available
●Generate Agent Resource Discovery (ard.json)
discovery
Target:public/.well-known/ard.json
Target File: public/.well-known/ard.json
Command: glintbase remediate ard.json

+ {
+   "$schema": "https://agentcard.org/v0.91/ard.json",
+   "id": "urn:air:buildwithfern.com:main",
+   "name": "buildwithfern",
+   "capabilities": ["tools", "context"]
+ }
●Ensure Server-Rendered Semantic HTML
access
Target:app/page.tsx
Target File: app/page.tsx
Command: glintbase remediate html

+ export default function Page() {
+   return (
+     <main>
+       <h1>Acme Developer Documentation</h1>
+       <p>Comprehensive machine-readable guides and APIs.</p>
+     </main>
+   );
+ }
●Mount Streamable HTTP MCP Server
usability
Target:app/api/mcp/route.ts
Target File: app/api/mcp/route.ts
Command: glintbase remediate mcp

+ import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
+ export async function POST(req: Request) { ... }

Audit Items

Problem Summary Prompt

Copy an ARS 3.0 compressed diagnostic defect summary structured by layer for teams or LLM pipelines.

Fixes / Solutions Prompt

Copy ARS 3.0 remediation files, patches, and CLI fix commands directly for Cursor, Claude Code, or Copilot.

Autonomous Agent Flight Simulator

Test Real Agent Execution In The Cockpit

Evaluate real-world agent execution against this ecosystem across Claude Code, Cursor & Windsurf, and Perplexity Sonar. Measure token consumption tax, schema friction risks, and autonomous credential handshakes.

5-Phase TrajectoryBPE Token Tax CounterTime-to-First-Tool-Call (TTFTC)Schema Friction Index
Launch Flight Simulator
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Buildwithfern Agent Readiness scorecard — 47/100
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