# Social API Reality 2026 Social API Reality 2026 is a tested SKILL.md that tells a publishing agent what the social networks allow, cost and return in autumn 2026, checked on 8 October 2026, before it plans or writes the posting code; an agent buys it once for $0.05 over x402. - Page: https://aiskills402.com/skills/social-api-reality-2026 - Category: Marketing & Copy (https://aiskills402.com/categories/marketing) - Price: $0.05 once, USD-priced, paid in USDC on Base over x402. Price as loaded on this page. The 402 response your agent receives is authoritative. - Version: 1.0.0 - Card (JSON): https://api.aiskills402.com/v1/skills/social-api-reality-2026 ## Use it when Tells a publishing agent what the social networks allow, cost and return in autumn 2026, checked on 8 October 2026, before it plans or writes the posting code. Covers X (no free tier, pay per request, a post with a link costs more), Hashnode (public API now needs a paid plan), Pinterest feed auto-publish (domain claim, first board by alphabet, image tag, first pins within the hour), Mastodon (media 202, scopes, token replacement, one-hour Idempotency-Key, no card fetched), Bluesky (three length units, byte offsets, card thumbnail upload, write budget) and Meta (Development mode versus Live). Answers as JSON when asked and says which facts to re-check. Use when asked to plan, write, fix or review automatic posting of articles to social networks, or why posts do not appear. ## Not for It does not post anything, hold your tokens or look at your accounts, and it cannot see a price or plan that changed after 8 October 2026. It covers X, Hashnode, Pinterest, Mastodon, Bluesky and Meta Pages only; Reddit, LinkedIn, TikTok and Telegram are not in it. It is no guide to what gets clicks. It states what each service allows, costs and returns, and tells you which facts to check again. ## Tested, honestly Tested 2026-10-08. - Strong model (claude-sonnet-5-5 (Claude Code alias "sonnet")): Got 24 of 24 with the skill, read by hand. It answered the Hashnode read-only question as paid, sent Pinterest pins to the first board by alphabet in both cases (Garden, Decor), put the first pins under an hour, and said the 53 Facebook posts become visible after Live with no republish. X pricing, Mastodon 202, the one-hour Idempotency-Key, the scope and card answers, the Bluesky emoji limit, the card thumbnail, the daily write budget and both Bluesky byte offsets were right. In the very first run, with the earlier wording, it made two arithmetic slips on the offsets (an end one byte too far); the wording was fixed and three further runs were all right. - Weak model (claude-haiku-5-5 (Claude Code alias "haiku")): Got 23 of 24 with the skill: all the Hashnode, Pinterest timing, Meta and Bluesky answers were right, including both byte offsets, but on one Pinterest question it still chose Kitchen, the first board it was told of, instead of Decor, the first by alphabet. Note: Twenty-four short questions written by us on six services, each answered as JSON with exact fields: 16 traps on facts that changed in 2026 or that the documentation does not state (X link price, Hashnode plan, Pinterest board and timing and image tag, Mastodon token and card and retry key, Bluesky units and offsets and write budget, Meta Live) and 8 controls where an ordinary answer is right. Each field is compared with the one defensible value; a fence or extra field fails. The task text is the same on both sides. One run per model and question. The facts were read on the services' own pages on 8 October 2026; some come from our own posting tests and are marked as such in the skill. The skill was run four times with it (the Bluesky wording changed after the first) and once without; the with-skill numbers merge the runs. ### With and without the skill Tested 2026-10-08. - Answers that match the checked fact (24 questions): Sonnet 24/24 with, 19/24 without; Haiku 23/24 with, 19/24 without. The same questions on both sides. Without the skill both models failed the same five (Sonnet) or four (Haiku) of them: they believed Hashnode read-only queries are still free, sent Pinterest pins to the newest or first-listed board instead of the first by alphabet, expected the first pins after about 24 hours instead of under an hour, and thought the Facebook posts made in Development mode stay hidden and must be republished after Live. They knew X pricing, Mastodon 202, the Idempotency-Key window and Bluesky units and offsets. With the skill, Sonnet passed all 24 across four runs; Haiku still chose the first-listed board on one Pinterest question. Same cases and the same checks with and without the skill. The cases are ours, written around what the skill is for; with a handful of cases, a difference of one or two is within noise. Full summary: https://aiskills402.com/skills/social-api-reality-2026/tests ## Example ### English (claude-sonnet-5-5) Before: > We want to post blog headlines to X from a script, each with a link to the article, using the official API. Is there a free tier for creating posts, and what does one post that contains a link cost per request in US dollars today? Answer {"free_tier": true|false, "usd_per_post_with_link": }. After: > {"free_tier": false, "usd_per_post_with_link": 0.20} ## What is in the file - The answer - X - Hashnode - Pinterest, feed auto-publish (measured by the author, September 2026) - Mastodon - Bluesky - Meta (Facebook Page) - Work in this order - Short examples ## Languages Any language ## How to buy Agent (HTTP): 1. GET https://api.aiskills402.com/v1/skills/social-api-reality-2026/file without a payment header. The answer is 402 with a PAYMENT-REQUIRED header (x402 v2): exact amount, asset, network, recipient. 2. Sign `accepts[0]` with an x402 client (for example @x402/core + @x402/evm). 3. Repeat the GET with the signature in the PAYMENT-SIGNATURE header. The answer is 200 with the file, its sha256 and a re-download token. Agent (MCP): https://mcp.aiskills402.com/mcp — free tools search_skills, get_skill, redownload_skill. Buying itself is over HTTP. Full flow: https://aiskills402.com/docs ## The file - Version: 1.0.0 - Size: 8.6 KB (8761 bytes) - SHA-256: f9c1795523eace0c45565b3fa64e05d3e40d95849d5705a98d7efe3c98e992f6 - Updated: 2026-10-08 - New versions are free through your re-download token. ## Versions ### 1.0.0 (2026-10-08) First release: what the social networks allow, cost and return in autumn 2026, for agents that publish articles. Covers X (no free tier, pay per request, a link post costs more), Hashnode (public API needs a paid plan), Pinterest feed auto-publish (domain claim, first board by alphabet, image tag, first pins within the hour), Mastodon (media 202, write:media and token replacement, one-hour Idempotency-Key, uploaded card picture), Bluesky (graphemes, bytes and UTF-16 units, byte offsets with a worked example and the end rule, card thumbnail blob, write points) and Meta (Development mode versus Live). Facts checked on 8 October 2026; the skill tells the agent which facts to re-check. Measured on 24 questions: Sonnet 24 of 24 with the skill against 19 without, Haiku 23 against 19. Price $0.05 once. ## License Perpetual, non-exclusive; use and modify for yourself incl. paid work; no resale or republishing. Holder: Georgi Kalchev, aiskills402.com. Terms: https://aiskills402.com/docs#license ## FAQ ### What does an agent get from it? A checked picture of what the networks do now, before the agent plans anything: X has no free tier and bills a post with a link at a higher rate, Hashnode's public API needs a paid plan, Pinterest feeds go to the first board by alphabet, Mastodon media upload answers 202 on success, Bluesky counts length and offsets in different units, and a Facebook app in Development mode posts that only its team can see. When a question shows a JSON shape, the answer is that JSON and nothing else. ### How current is it, and what if a price changes? Every fact was read on the service's own documentation or announcement on 8 October 2026, except a few marked as measured by the author in real posting tests, with their dates. The skill tells the agent that prices, plans and limits change and to ask for a fresh look in the developer console before building on them. A newer version will carry a new date in the changelog. ### Does it post for me or need my tokens? No. It never posts, never asks for a token and never touches an account. It is a text file the agent reads before it plans or writes the posting code, and it works with any code you already have, in any language. It helps with retries too: it says which channel has a safe retry key, for how long, and when a retry makes a duplicate. ### Does it help Claude Sonnet? On a small test of 24 questions, Sonnet got 24 of 24 questions right with the skill and 19 without; Haiku 23 against 19. Both models alone were wrong on the same facts: Hashnode reads now needing a paid plan, the Pinterest board chosen by alphabet, first pins within the hour, and Facebook posts becoming visible after Live. Haiku still picked the first-listed Pinterest board once. A first run had two Bluesky offset slips from Sonnet; the text was fixed and three re-runs were right. ## Related skills - [SEO Meta Writer](https://aiskills402.com/skills/seo-meta.md): $0.03 once - [JSON-LD Schema Writer](https://aiskills402.com/skills/json-ld-schema.md): $0.05 once ## Measurement limits - Models other than the two named above were not run. - Each verdict comes from the test run on the date shown; the skill may have changed since (check the version). - Full test inputs are not published here, only short excerpts of our own text. - Results on your own texts, languages and domains can differ. Offer note: Paid in USDC (USD-pegged) over x402 by an AI agent; one-time.