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Official agent skill

Finding LLM Gateway Migration Candidates

by PostHog in PostHog/posthog

Finds and ranks callers that could move from services/llm-gateway to PostHog/ai-gateway.

OfficialCustom licenceAuto-check passedAI & LLM Engineering

Install Finding LLM Gateway Migration Candidates

skills CLI
$ npx skills add PostHog/posthog --skill finding-llm-gateway-migration-candidates -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install PostHog/posthog finding-llm-gateway-migration-candidates --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/PostHog/posthog.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/finding-llm-gateway-migration-candidates .claude/skills/finding-llm-gateway-migration-candidates && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
finding-llm-gateway-migration-candidates
GitHub stars
40k
Token cost
~1.7k tokens
SKILL.md length
872 words
Files
1
Skills in repo
254
Repo updated
First seen
Licence
Custom licence

At a glance

Finds and ranks callers that could move from services/llm-gateway to PostHog/ai-gateway.

  • Works in 5 steps: Find the API, task, workflow, schedule,… → For Temporal, map the workflow and… → Inspect every environment overlay that… → …
  • Asked what to migrate next
  • SKILL.md covers Discover callers, Prove the production path, Inventory each candidate and Classify readiness, plus 2 more sections
  • Needs LLM_GATEWAY_API_KEY

What it does

Finding LLM Gateway Migration Candidates is an agent skill from PostHog/posthog, published by the product's own GitHub organization. Finds and ranks callers that could move from services/llm-gateway to PostHog/ai-gateway. Use when asked what to migrate next, to find low-risk gateway migration candidates, to audit remaining Python gateway callers, or to identify callers blocked by Go gateway parity. Searches code and deployment wiring, inventories each caller's required contract, filters out unsupported migrations, and returns an evidence-backed shortlist without changing callers.

Its SKILL.md is about 1.7k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in AI & LLM Engineering, covering Model routing and gateways. It works with PostHog and Python. The repository describes itself as: :hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error…

When your agent uses it

  • Asked what to migrate next
  • Find low-risk gateway migration candidates
  • Audit remaining Python gateway callers
  • Identify callers blocked by Go gateway parity

Example prompts

  • “Use the finding-llm-gateway-migration-candidates skill to find and ranks callers that could move from services/llm-gateway to PostHog/ai-gateway”
  • “/finding-llm-gateway-migration-candidates”

Requirements

  • Python 3
  • A credential in LLM_GATEWAY_API_KEY

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Find the API, task, workflow, schedule, or command that invokes it.
  2. For Temporal, map the workflow and activity to the exact task queue, then map that queue to its deployed worker.
  3. Inspect every environment overlay that runs the caller. Do not borrow configuration from another worker in the same product.
  4. Resolve the configured URL by host and path. Variable names are not proof: an AI_GATEWAY_URL can still contain a Python product-slug URL.
  5. Confirm the current call can succeed. A broad exception handler with a deterministic fallback can hide missing credentials or a route that…

What it can do on your machine

Read from SKILL.md and the folder at commit c012c8d. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • LLM_GATEWAY_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Finding LLM Gateway Migration Candidates loads about 1.7k tokens when it runs. Until then it costs about 124 tokens; SKILL.md has 872 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~124
When it runs · the whole SKILL.md, loaded when a task matches
~1.7k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 872 words (~1,695 tokens).

“Use services/llm-gateway/PARITY.md as the current contract decision record. If implementation evidence contradicts it, run /auditing-llm-gateway-parity before ranking candidates.”

— opening of SKILL.md by PostHog, Custom licence
name
finding-llm-gateway-migration-candidates

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/finding-llm-gateway-migration-candidates of PostHog/posthog.

Open the folder on GitHubat commit c012c8d

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders. This page covers the copy in PostHog/posthog, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Finding LLM Gateway Migration Candidates next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Finding LLM Gateway Migration Candidates compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Finding LLM Gateway Migration Candidates this skillPostHog/posthog40k—~1.7kAutomated safety check: PassCustom licence
SDK CoreVectorSpaceLab/AREX-Skill331—~1.1kAutomated safety check: PassCustom licence
Agent Squad Python Guide2FastLabs/agent-squad7.8k—~4.7kAutomated safety check: PassApache-2.0
Synthetic Data GenerationRed-Hat-AI-Innovation-Team/sdg_hub164—~3.1kAutomated safety check: PassApache-2.0
Openrouter Common Errorsjeremylongshore/tons-of-skills-marketplace2.8k—~2.7kAutomated safety check: PassMIT
Openrouter Debug Bundlejeremylongshore/tons-of-skills-marketplace2.8k—~2.5kAutomated safety check: PassMIT

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Works with

Categories

Questions about Finding LLM Gateway Migration Candidates

What does Finding LLM Gateway Migration Candidates do?

Finds and ranks callers that could move from services/llm-gateway to PostHog/ai-gateway. Finding LLM Gateway Migration Candidates is an agent skill from PostHog/posthog, published by the product's own GitHub organization. Finds and ranks callers that could move from services/llm-gateway to PostHog/ai-gateway.

When should I use Finding LLM Gateway Migration Candidates?

Finding LLM Gateway Migration Candidates fits situations like: asked what to migrate next; find low-risk gateway migration candidates; audit remaining Python gateway callers; identify callers blocked by Go gateway parity.

How do I install Finding LLM Gateway Migration Candidates in Claude Code?

Run `npx skills add PostHog/posthog --skill finding-llm-gateway-migration-candidates -a claude-code`. Or copy the skill folder (.agents/skills/finding-llm-gateway-migration-candidates in PostHog/posthog) into .claude/skills/finding-llm-gateway-migration-candidates in your project. Claude Code loads it when a task matches its description.

How do I install Finding LLM Gateway Migration Candidates in Codex?

Run `npx skills add PostHog/posthog --skill finding-llm-gateway-migration-candidates -a codex`. Or copy the skill folder (.agents/skills/finding-llm-gateway-migration-candidates in PostHog/posthog) into .agents/skills/finding-llm-gateway-migration-candidates in your project. Codex loads it when a task matches its description.

Can I use Finding LLM Gateway Migration Candidates in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add PostHog/posthog --skill finding-llm-gateway-migration-candidates -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/finding-llm-gateway-migration-candidates, .gemini/skills/finding-llm-gateway-migration-candidates, .github/skills/finding-llm-gateway-migration-candidates and .opencode/skills/finding-llm-gateway-migration-candidates in your project.

What does Finding LLM Gateway Migration Candidates need to run?

Going by SKILL.md and its folder, Finding LLM Gateway Migration Candidates needs credentials named LLM_GATEWAY_API_KEY. Our summary lists: Python 3; A credential in LLM_GATEWAY_API_KEY.

Does Finding LLM Gateway Migration Candidates access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Finding LLM Gateway Migration Candidates safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Finding LLM Gateway Migration Candidates use?

Finding LLM Gateway Migration Candidates has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Finding LLM Gateway Migration Candidates use?

About 1.7k tokens (SKILL.md is roughly 6.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Finding LLM Gateway Migration Candidates?

Skills that share tags, products or a category with Finding LLM Gateway Migration Candidates: SDK Core (VectorSpaceLab/AREX-Skill, 331 stars), Agent Squad Python Guide (2FastLabs/agent-squad, 7.8k stars), Synthetic Data Generation (Red-Hat-AI-Innovation-Team/sdg_hub, 164 stars) and Openrouter Common Errors (jeremylongshore/tons-of-skills-marketplace, 2.8k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Finding LLM Gateway Migration Candidates?

PostHog (a GitHub organization, an official publisher) maintains it in PostHog/posthog, which has 40,209 GitHub stars. The repository holds 254 skills in this directory. The repository was last updated on October 10, 2026.

Source: PostHog/posthog on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.