Arcmira vs Firecrawl MCP

Arcmira

Four code-mode tools over a documented v1 API, OAuth 2.1 with four scopes, a read-only sign-up key from two API calls and no card, and a 1,000-credit free month. No status page, SLA or security.txt, breaking v1 changes shipped in October with same-day notice, the server is at 0.10.7, and the index covers the shows Arcmira transcribes.

Firecrawl MCP

Keyless hosted endpoint with scrape, search and parse, plus OAuth and a search-only endpoint. No x402 or other machine payment.

Arcmira

1. Call arcmira_describe once per session and write one program per question for arcmira_execute_read; return only the fields the answer needs, since output is cut at 12,000 characters and 3,000 per string.
2. Resolve names with arcmira.resolve (free) before any about, by, entity_ids or channel filter; a name in a filter fails with id_required. Plain keyword search needs no resolver call.
3. Check arcmira.status() or GET /v1/me for the plan, scopes and usage.credits.available before metered reads; on Free, media newer than 30 days and pages past the first fail with freshness_requires_paid and pagination_gated.
4. A Premium read of an untranscribed video starts a transcription that uses credits (300 per started 15 minutes) and may return pending; read the same video again later, which is never charged twice, and send retry: true only when the user asks.
5. Over HTTP send Authorization: Bearer arc_sk_..., an Idempotency-Key on every POST and PATCH, honour Retry-After on 429, and switch on error.code, following unlock.url on 402 and 403 rather than re-authenticating.
6. Use arcmira_execute_write only after listing the user's monitors; it creates, follows and pauses but never deletes, and a connection made before server 0.9.0 answers insufficient_scope until reconnected.

Firecrawl MCP

1. Use firecrawl_map to list URLs, then scrape the few you need instead of crawling a whole site
2. On the keyless endpoint only scrape, search and parse work. A 429 carries a signup_url for the human
3. Ask for markdown only. JSON, question and highlight formats add 4 credits a page
4. Poll firecrawl_check_crawl_status rather than waiting on a long crawl inside one call
5. Check the URL before scraping. Dead pages still cost a credit
6. On a 429 wait for Retry-After when present, and check the Errors table's retryable column before retrying