Borrowing it
Nothing to install: this file belongs to greenpau/go-authcrunch. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/greenpau/go-authcrunch/main/.codex/skills/authentication-portal-profile/SKILL.mdgit clone --depth 1 https://github.com/greenpau/go-authcrunchWrote 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/greenpau/go-authcrunch/authentication-portal-profile)<a href="https://agentmods.dev/skills/greenpau/go-authcrunch/authentication-portal-profile"><img src="https://agentmods.dev/badge/skills/greenpau/go-authcrunch/authentication-portal-profile/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/greenpau/go-authcrunch/authentication-portal-profile"><img src="https://agentmods.dev/badge/skills/greenpau/go-authcrunch/authentication-portal-profile.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 | $0.00038 | $0.01392 |
| Opus 5.5 | $0.00015 | $0.00557 |
| Sonnet 5.5 | $0.00008 | $0.00278 |
| Haiku 4.5 | $0.00004 | $0.00139 |
Grade A, and why
authentication-portal-profile 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 17d ago.
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.
How it starts
The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Authentication Portal Profile
Ownership and configuration
authn.APIConfig.ProfileEnabled gates profile access. The existing admin API
parser preserves this field but does not configure it; no dedicated profile
enablement parser is present. Keep that legacy configuration gap separate from
the implemented challenge-rule parser used by the flow-selection operations.
Canonical identity and mutations
pkg/authn/handle_api_profile.go dispatches local self-service operations after
JWT authorization and exact-token lookup of the server-cached login through
SessionCache.GetForToken. Matching jti alone must not allow an earlier JWT
to borrow a later account's canonical identity or credential-management proof.
profile_identity.go
wraps the selected backend with ids.IdentityRequestStore; each delegated
operation carries a snapshot of canonical username/email and immutable login
evidence. Never select a profile account from transformed token sub or email,
or accept identity evidence from the request body.
Require matching backend name/realm, local authentication, canonical account fields, immutable user ID and backend epoch. Perform the initial bound GetUser check even for ceremony endpoints that do not otherwise touch the backend. Every later read or mutation must still use the bound wrapper: an earlier successful check cannot authorize an unguarded write after revocation. Unsupported stores and stale/missing identity evidence fail closed.
The local adapter delegates to Database.RequestWithIdentity. Follow
local database transactions for its fresh
snapshot, operation allowlist, locking, rollback and detached response contract.
The generic trusted IdentityStore.Request API remains a separate provisioning
boundary; do not substitute it for authenticated self-service.
Identity-bound password changes accept plaintext and reject reserved hash-import
prefixes before mutation. Keep this check at Database.RequestWithIdentity so
every local self-service caller receives it; trusted provisioning still supports
imports. Follow the password owner
for the shared predicate, work-factor trust boundary and regression coverage.
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 17d ago Changed · +5 lines c1037fd066a6
- 26d ago Changed · +6 lines c02741a5480c
- 28d ago Changed · +8 lines 30d4be57d44f
- 1mo ago Changed · +26 lines b6eeb3a313a9
- 1mo ago Changed · +8 lines 993231716597
- 1mo ago Changed · +10 lines · +8 tokens per session ac9e5983ab0a
- 1mo ago First seen · 57 lines · 30 tokens per session scan A f14048c18cff
authentication-portal-profile is a skill published in the GitHub repository greenpau/go-authcrunch (60 stars, last pushed 10d ago), licensed Apache-2.0. It adds 38 tokens to every session and 1,392 once invoked, about $0.0002 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 2026-09-18.
authentication-portal-profile compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| authentication-portal-profilegreenpau/go-authcrunch | Skill | 60 | 10d ago | Apache-2.0 | A | 38 | Codex |
| mem0-oss-to-platformmem0ai/mem0 | Skill | 68k | 2d ago | Apache-2.0 | A | 217 | Claude Code, Codex |
| azure-mgmt-botservice-dotnetmicrosoft/skills | Skill | 3.2k | yesterday | MIT | A | 78 | Claude Code |
| fastapi-router-pymicrosoft/skills | Skill | 3.2k | yesterday | MIT | A | 46 | Claude Code |
| dev-runtimelangwatch/langwatch | Skill | 5.0k | yesterday | Apache-2.0 | A | 172 | Claude Code |
| api-designericrisco/rsc-harness | Skill | 503 | 2d ago | MIT | A | 105 | Claude Code, Codex |
| migrate-segw-to-raparc-mcp/arc-1 | Skill | 252 | yesterday | MIT | A | 106 | Claude Code |