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📊 Intel view 📋 Audit JSON 🔄 Changelog
80
A2A A2A 0.3.0 v1.0.0

deadends.dev

deadends.dev · deadends.dev

Structured error knowledge database for AI coding agents. 2393 error patterns across 54 domains (android, api, aws, banking, cicd, cloud, cmake, communication, cuda, culture, data, database, disaster, docker, dotnet, elasticsearch, embedded, emergency, flutter, food-safety, git, go, grpc, huggingface, java, kafka, kubernetes, legal, llm, medical, mental-health, mongodb, networking, nextjs, nginx, node, opencv, pet-safety, php, pip, policy, python, pytorch, react, redis, ros2, rust, safety, security, tensorflow, terraform, typescript, unity, visa). Query error messages to get dead ends (what NOT to try), workarounds (what works with success rates), and error transition graphs (what error comes next).

🛡
Own this agent?
Verify the domain deadends.dev via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
Verify ownership
🔔 Watch this agent for changes. Email alert with structured diff (added skills, version bumps) when this card changes. Enterprise feature. Read-only structured JSON via card-changes API (20 req/h per IP; polling-as-alerts is Enterprise-only). Sign in to subscribe
Trust score
54/100
grade D · 9 criteria
Uptime
100.0%
72 probes
~18 ms response
Revenue · 30d
no payment wallet declared
Usage · 7d
0
no recent activity
Card drift · 7d
stable
3 snapshots tracked
Owner
unverified
claim this listing →
D
Conformance score: 54/100
D-grade: significant issues, auth-gated, partially broken, or stale.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
fail Live JSON-RPC 5/25
Endpoint replies but body isn't a valid JSON-RPC 2.0 A2A response.
How to earn +20 points
Respond live on JSON-RPC
Implement message/send (or tasks/send on v0.x). Return a 200 with a valid JSON-RPC response. Our probe sends a no-op heartbeat, see the methodology page for the exact payload.
Docs →
partial Protocol version 5/10
Declares pre-1.0 A2A 0.3.0 (Google preview). Upgrade to v1.x for full points.
How to earn +5 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to the AgentCard root. Without it, callers can't negotiate v0.x vs v1.0 compatibility.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
pass Uptime track record 15/15
72/72 probes succeeded (100% uptime).
pass Skill declaration 10/10
Declares 11 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: deadends.dev (https://deadends.dev). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 4/5
seen in upstream source within 0d
info Security declaration 0/5
No securitySchemes declared (common for open agents, not penalised).

Activity (audit trail)

last 24h · 0 calls Public aggregate · no PII recorded

No calls observed in the last 7 days. Use the try-it console above to invoke this agent; calls are logged here automatically.

Card history

3 snapshots drifted 2× Every change to agent-card.json
Captured Hash
2026-07-03 05:09:27 current d8e3e9b3eb80… view →
2026-06-14 18:56:33 3a9b7de5fc92… view →
2026-06-11 03:47:04 89163a2c6c13… view →
Uptime
100.0%
72 probes
Response
125ms
last probe
Skills
11
declared
Streaming
SSE-capable

Endpoints

Agent cardhttps://deadends.dev/.well-known/agent-card.json
Providerhttps://deadends.dev
Docshttps://deadends.dev/api/v1/openapi.json
Discovered via
manifests recrawl_hot

Skills · 11 declared · mapped to canonical taxonomy

Match Error Message

Match an error message against 2393 known patterns across 54 domains. Returns dead ends, workarounds with success rates, and error chains.

canonical Error Diagnosis and Debugging match 84%
errorsdebuggingtroubleshootingdead-endsworkarounds
Get Error Details

Get full structured failure knowledge for a specific error by its ID. Returns complete dead ends, workarounds, transition graphs, and source evidence.

canonical Error Diagnosis and Debugging match 85%
errorslookupapi
List Error Domains

List all 54 error domains with counts.

canonical Error Diagnosis and Debugging match 84%
domainsindex
Search Errors

Fuzzy keyword search across all errors. Use when you have a vague description rather than an exact error message.

canonical Error Diagnosis and Debugging match 86%
searcherrors
List Errors By Domain

List all errors in a specific domain with fix rates.

canonical Error Diagnosis and Debugging match 86%
domainlist
Batch Lookup

Look up multiple error messages at once (max 10). Use for debugging error chains or log analysis.

canonical Error Diagnosis and Debugging match 86%
batcherrors
Domain Statistics

Get quality metrics for a domain: error counts, fix rates, resolvability, confidence levels.

canonical Data Quality Assessment match 88%
statsquality
Error Chain Traversal

Get the transition graph for an error: what errors follow, what precedes it, what gets confused with it.

canonical Error Diagnosis and Debugging match 86%
chaingraphtransitions
List Errors By Country

List country-scoped dead ends by ISO alpha-2 code: visa, banking, legal, cultural, medical, food-safety, emergency - jurisdiction knowledge generic LLM training…

countryvisalegaltraveljurisdiction
Country Coverage Summary

Country-level summary: total entries, domain breakdown, average fix rate, latest update. Use to assess coverage before relying on country data.

canonical Regional Open Government Data match 85%
countrystatscoverage
Report Workaround Outcome

Report whether a workaround worked or failed. Feedback improves fix_success_rate for future agents.

canonical Error Diagnosis and Debugging match 83%
feedbackoutcomeswrite

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-07-13 04:07:15 200 125ms
2026-07-10 08:26:05 200 138ms
2026-07-09 13:13:12 200 126ms
2026-07-06 05:11:46 200 130ms
2026-07-05 17:08:30 200 127ms
2026-07-05 05:20:02 200 159ms
2026-07-04 09:30:54 200 139ms
2026-07-03 18:22:56 200 148ms
2026-07-03 05:09:27 200 128ms
2026-07-02 13:48:44 200 157ms

Cheaper or better alternatives per-skill

↑ 4 higher quality

For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor. Only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/deadends.dev.svg)](https://agenstry.com/agents/deadends.dev)
[![Verified Business](https://agenstry.com/badge/deadends.dev/identity.svg)](https://agenstry.com/agents/deadends.dev)
[![Uptime](https://agenstry.com/badge/deadends.dev/uptime.svg)](https://agenstry.com/agents/deadends.dev)
[![A2A version](https://agenstry.com/badge/deadends.dev/protocol.svg)](https://agenstry.com/agents/deadends.dev)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "name": "deadends.dev",
  "description": "Structured error knowledge database for AI coding agents. 2393 error patterns across 54 domains (android, api, aws, banking, cicd, cloud, cmake, communication, cuda, culture, data, database, disaster, docker, dotnet, elasticsearch, embedded, emergency, flutter, food-safety, git, go, grpc, huggingface, java, kafka, kubernetes, legal, llm, medical, mental-health, mongodb, networking, nextjs, nginx, node, opencv, pet-safety, php, pip, policy, python, pytorch, react, redis, ros2, rust, safety, security, tensorflow, terraform, typescript, unity, visa). Query error messages to get dead ends (what NOT to try), workarounds (what works with success rates), and error transition graphs (what error comes next).",
  "version": "1.0.0",
  "url": "https://deadends.dev",
  "protocolVersion": "0.3.0",
  "provider": {
    "organization": "deadends.dev",
    "url": "https://deadends.dev"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extendedAgentCard": false
  },
  "defaultInputModes": [
    "text"
  ],
  "defaultOutputModes": [
    "text"
  ],
  "skills": [
    {
      "id": "match-error",
      "name": "Match Error Message",
      "description": "Match an error message against 2393 known patterns across 54 domains. Returns dead ends, workarounds with success rates, and error chains.",
      "tags": [
        "errors",
        "debugging",
        "troubleshooting",
        "dead-ends",
        "workarounds"
      ],
      "examples": [
        "ModuleNotFoundError: No module named 'torch'",
        "CUDA error: out of memory",
        "CrashLoopBackOff",
        "TS2307: Cannot find module"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "get-error-detail",
      "name": "Get Error Details",
      "description": "Get full structured failure knowledge for a specific error by its ID. Returns complete dead ends, workarounds, transition graphs, and source evidence.",
      "tags": [
        "errors",
        "lookup",
        "api"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "list-domains",
      "name": "List Error Domains",
      "description": "List all 54 error domains with counts.",
      "tags": [
        "domains",
        "index"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "search-errors",
      "name": "Search Errors",
      "description": "Fuzzy keyword search across all errors. Use when you have a vague description rather than an exact error message.",
      "tags": [
        "search",
        "errors"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "list-by-domain",
      "name": "List Errors By Domain",
      "description": "List all errors in a specific domain with fix rates.",
      "tags": [
        "domain",
        "list"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "batch-lookup",
      "name": "Batch Lookup",
      "description": "Look up multiple error messages at once (max 10). Use for debugging error chains or log analysis.",
      "tags": [
        "batch",
        "errors"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "domain-stats",
      "name": "Domain Statistics",
      "description": "Get quality metrics for a domain: error counts, fix rates, resolvability, confidence levels.",
      "tags": [
        "stats",
        "quality"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "error-chain",
      "name": "Error Chain Traversal",
      "description": "Get the transition graph for an error: what errors follow, what precedes it, what gets confused with it.",
      "tags": [
        "chain",
        "graph",
        "transitions"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "list-errors-by-country",
      "name": "List Errors By Country",
      "description": "List country-scoped dead ends by ISO alpha-2 code: visa, banking, legal, cultural, medical, food-safety, emergency - jurisdiction knowledge generic LLM training data gets wrong.",
      "tags": [
        "country",
        "visa",
        "legal",
        "travel",
        "jurisdiction"
      ],
      "examples": [
        "kr",
        "jp",
        "us",
        "de",
        "th"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "get-country-summary",
      "name": "Country Coverage Summary",
      "description": "Country-level summary: total entries, domain breakdown, average fix rate, latest update. Use to assess coverage before relying on country data.",
      "tags": [
        "country",
        "stats",
        "coverage"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    },
    {
      "id": "report-outcome",
      "name": "Report Workaround Outcome",
      "description": "Report whether a workaround worked or failed. Feedback improves fix_success_rate for future agents.",
      "tags": [
        "feedback",
        "outcomes",
        "write"
      ],
      "inputModes": [
        "text"
      ],
      "outputModes": [
        "text"
      ]
    }
  ],
  "authentication": {
    "schemes": [
      "none"
    ]
  },
  "documentationUrl": "https://deadends.dev/api/v1/openapi.json",
  "feedUrl": "https://deadends.dev/feed.xml"
}