Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Goldziher/ai-rulez --skill error-codesgit clone --depth 1 https://github.com/Goldziher/ai-rulezWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/goldziher/ai-rulez/error-codes)<a href="https://agentmods.dev/skills/goldziher/ai-rulez/error-codes"><img src="https://agentmods.dev/badge/skills/goldziher/ai-rulez/error-codes/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/goldziher/ai-rulez/error-codes"><img src="https://agentmods.dev/badge/skills/goldziher/ai-rulez/error-codes.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00030 | $0.00672 |
| Opus 5.5 | $0.00012 | $0.00269 |
| Sonnet 5.5 | $0.00006 | $0.00134 |
| Haiku 4.5 | $0.00003 | $0.00067 |
Grade A, and why
error-codes scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Error codes
Find the code the user pasted in the table, quote its meaning and give the action.
| Code | Meaning | Action |
|---|---|---|
| E1000 | Invalid session token | Re-authenticate |
| E1001 | Expired session | Refresh the session |
| E1002 | Missing API key | Add the header |
| E1003 | Rate limit exceeded | Retry after the delay |
| E1004 | Payload too large | Split the request |
| E1005 | Unsupported media type | Send JSON |
| E1006 | Unknown tenant | Check the tenant slug |
| E1007 | Tenant suspended | Contact support |
| E1008 | Invalid cursor | Restart pagination |
| E1009 | Duplicate request | Use a new idempotency key |
| E1010 | Validation failed | Fix the listed fields |
| E1011 | Unknown field | Remove the field |
| E1012 | Resource locked | Retry later |
| E1013 | Resource not found | Check the identifier |
| E1014 | Conflict on update | Fetch and retry |
| E1015 | Upstream timeout | Retry with backoff |
| E1016 | Upstream unavailable | Retry later |
| E1017 | Quota exceeded | Raise the quota |
| E1018 | Invalid signature | Recompute the signature |
| E1019 | Clock skew too large | Sync the clock |
| E1020 | Bad date range | Use ISO dates |
| E1021 | Unsupported locale | Use a listed locale |
| E1022 | Webhook disabled | Re-enable the webhook |
| E1023 | Webhook URL unreachable | Fix the URL |
| E1024 | Export too large | Narrow the filter |
| E1025 | Export expired | Request a new export |
| E1026 | Import row invalid | Fix the row |
| E1027 | Import header missing | Add the header row |
| E1028 | Import encoding invalid | Use UTF-8 |
| E1029 | Report not ready | Poll again |
| E1030 | Report failed | Retry the report |
| E1031 | Role missing | Grant the role |
| E1032 | Scope missing | Request the scope |
| E1033 | Password too weak | Pick a longer one |
| E1034 | Account locked | Wait or reset |
| E1035 | Email unverified | Verify the email |
| E1036 | Invalid coupon | Check the code |
| E1037 | Coupon expired | Use a current coupon |
| E1038 | Card declined | Use another card |
| E1039 | Currency mismatch | Use the account currency |
| E1040 | Refund exceeds charge | Lower the amount |
| E1041 | Charge already refunded | No action |
| E1042 | Plan not found | Choose a listed plan |
| E1043 | Plan downgrade blocked | Cancel add-ons first |
| E1044 | Seat limit reached | Buy seats |
If the code is not in the table, say so and ask for the full response body.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- today First seen · 59 lines · 30 tokens per session scan A 025bff4779e2
error-codes is a skill published in the GitHub repository Goldziher/ai-rulez (163 stars, last pushed yesterday), licensed MIT. It adds 30 tokens to every session and 672 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-17.
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