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refresh-rate-card

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Actualizado13 de mayo de 2026 a las 18:00

Updates shared/rate-card.json with a new per-model rate table. Validates the proposed update against the existing schema, diffs prices against the current card, and produces a commit-ready diff for human review. Use when: CI nightly job detects a pricing change on Anthropic's published rate page, or when the developer runs /refresh-rate-card after verifying a price change. Do not use at runtime during a Claude Code session — this skill runs in CI or at developer invocation, never inside the observation hot path.

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enchanter-ai

enchanter-ai/pech

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SKILL.md

readonly

name	refresh-rate-card
description	Updates shared/rate-card.json with a new per-model rate table. Validates the proposed update against the existing schema, diffs prices against the current card, and produces a commit-ready diff for human review. Use when: CI nightly job detects a pricing change on Anthropic's published rate page, or when the developer runs /refresh-rate-card after verifying a price change. Do not use at runtime during a Claude Code session — this skill runs in CI or at developer invocation, never inside the observation hot path.
model	sonnet
tools	["Read","Write"]

refresh-rate-card

Preconditions

Fresh rate data is available as structured JSON (provided as argument, not fetched here)
The proposed JSON validates against the schema (see load-rate-card step 2-4)
Not running inside a hook context (refresh is a deliberate developer/CI action)

Inputs

Proposed rate-card JSON: the new values to write
Current card: shared/rate-card.json

Steps

Validate the proposed card's schema (same checks as load-rate-card).
Diff against the current card:
- For each model: compare input_rate and output_rate.
- For each modifier: compare value.
- Summarize changes: {model, field, old_value, new_value, pct_change}.
If any price changes by > 20% in either direction, flag as suspicious_change — require explicit confirmation before writing. Anthropic pricing historically moves by ≤ 10% per change.
Append the current card to state/rate-card-history.jsonl (audit trail of all prior cards).
Write the new card to shared/rate-card.json via atomic temp-rename (@../vis/packages/core/conduct/verification.md § dry-run pattern).
Set _meta.last_verified to today.
Emit pech.rate_card.refreshed with the diff summary.

Success criterion: new card is valid, history is preserved, diff summary emitted. Never overwrite the card without appending history — audit trail is load-bearing for forecasting backtests.

Outputs

Updated shared/rate-card.json
Appended state/rate-card-history.jsonl
Event: pech.rate_card.refreshed with diff

Handoff

CI workflow commits the updated card in a PR. Developer review decides whether suspicious_change flags require reverting.

Failure modes

Code	Scenario	Counter
F10	Overwrite the card without appending history	Hard-fail — atomic rename requires history append in the same operation
F11	Silently pass a > 20% change because the diff looks clean	`suspicious_change` flag is mandatory regardless of visual appearance
F14	Apply a rate change retroactively to old ledger rows	Forbidden — old rows stay at their computed-at-write-time cost; audit trail compares against rate-card-history.jsonl

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name	refresh-rate-card
description	Updates shared/rate-card.json with a new per-model rate table. Validates the proposed update against the existing schema, diffs prices against the current card, and produces a commit-ready diff for human review. Use when: CI nightly job detects a pricing change on Anthropic's published rate page, or when the developer runs /refresh-rate-card after verifying a price change. Do not use at runtime during a Claude Code session — this skill runs in CI or at developer invocation, never inside the observation hot path.
model	sonnet
tools	["Read","Write"]

refresh-rate-card

Preconditions

Fresh rate data is available as structured JSON (provided as argument, not fetched here)
The proposed JSON validates against the schema (see load-rate-card step 2-4)
Not running inside a hook context (refresh is a deliberate developer/CI action)

Inputs

Proposed rate-card JSON: the new values to write
Current card: shared/rate-card.json

Steps

Validate the proposed card's schema (same checks as load-rate-card).
Diff against the current card:
- For each model: compare input_rate and output_rate.
- For each modifier: compare value.
- Summarize changes: {model, field, old_value, new_value, pct_change}.
If any price changes by > 20% in either direction, flag as suspicious_change — require explicit confirmation before writing. Anthropic pricing historically moves by ≤ 10% per change.
Append the current card to state/rate-card-history.jsonl (audit trail of all prior cards).
Write the new card to shared/rate-card.json via atomic temp-rename (@../vis/packages/core/conduct/verification.md § dry-run pattern).
Set _meta.last_verified to today.
Emit pech.rate_card.refreshed with the diff summary.

Success criterion: new card is valid, history is preserved, diff summary emitted. Never overwrite the card without appending history — audit trail is load-bearing for forecasting backtests.

Outputs

Updated shared/rate-card.json
Appended state/rate-card-history.jsonl
Event: pech.rate_card.refreshed with diff

Handoff

CI workflow commits the updated card in a PR. Developer review decides whether suspicious_change flags require reverting.

Failure modes

Code	Scenario	Counter
F10	Overwrite the card without appending history	Hard-fail — atomic rename requires history append in the same operation
F11	Silently pass a > 20% change because the diff looks clean	`suspicious_change` flag is mandatory regardless of visual appearance
F14	Apply a rate change retroactively to old ledger rows	Forbidden — old rows stay at their computed-at-write-time cost; audit trail compares against rate-card-history.jsonl