Към съдържанието

API documentation

With the Do4U API you use the same tools as on the website from your own software: summarise, compare, support replies, alt texts, rewrite and translate. Every request is processed on our own servers in Poland, EU.

Base URL: https://do4u.eu/api/v1

OpenAPI 3.1 description (JSON) – Machine-readable description of this API for code generators and tools such as Postman or Insomnia. No key needed.

Authentication

Create a key under API keys in your account. Send it with every request in the header Authorization: Bearer <key> (or X-API-Key: <key>). Keep the key secret and never put it into a web page. You can revoke a key at any time.

How it works

Jobs run asynchronously. You create a job and get its id at once (HTTP 202). Then you fetch the job until its status is done or failed. Ask every 2 to 5 seconds; most jobs take a few seconds.

Endpoints

GET /tools Tools, options and your input limits
GET /balance Your credit balance
POST /jobs Create a job (JSON, or multipart/form-data with an image file)
GET /jobs/{id} Status and result of a job
DELETE /key Revoke the key you send with this request, for example when an integration is disconnected. Jobs already created still finish.
POST /key/revoke The same as DELETE /key, for clients that can only send GET and POST.

Example

Create a job, then fetch the result:

curl -X POST https://do4u.eu/api/v1/jobs \
  -H "Authorization: Bearer d4u_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"tool": "summarize", "text": "...", "options": {"length": "short"}, "language": "en"}'
HTTP/1.1 202 Accepted
{"id": "8f1c0b6a...", "tool": "summarize", "status": "queued", "model": "do4u-standard",
 "credits_estimate": 1, "links": {"self": "https://do4u.eu/api/v1/jobs/8f1c0b6a..."}}
curl https://do4u.eu/api/v1/jobs/8f1c0b6a... -H "Authorization: Bearer d4u_YOUR_KEY"

{"id": "8f1c0b6a...", "tool": "summarize", "status": "done", "model": "do4u-standard", "credits_estimate": 1,
 "result": {"summary": "...", "key_points": ["...", "..."]}, "credits": 1,
 "notice": "AI-generated, please check before use."}
curl -X POST https://do4u.eu/api/v1/jobs -H "Authorization: Bearer d4u_YOUR_KEY" \
  -F tool=alt_text -F language=de -F "text=Product page: hiking boots" -F image=@photo.jpg

Request fields for POST /jobs

toolName of the tool, see the table below. Required.
textInput text. For compare: text A. For alt_text: optional page context.
text_bText B (compare only).
urlPublic web page to read instead of text (summarize, accessibility_check).
htmlHTML of a page to check (accessibility_check), up to 300,000 characters.
focus_keywordOptional focus keyword for seo_meta. Without target, seo_meta writes in language.
faqOptional FAQ snippets (support_reply only).
questionsOptional for seo_meta, content_brief and faq_schema: frequent visitor questions as a list of texts or {"text": ..., "count": n} (up to 50, at most 20 are used). faq_schema answers them first if the source answers them; visitor_questions in the result says what happened to each.
imageImage for alt_text: file field in multipart/form-data, or base64 / data URI in JSON. JPG, PNG, WebP or GIF, up to 5 MB.
image_urlOptional for alt_text instead of image: public address of the image (http or https; JPEG, PNG, WebP or GIF; at most 5 MB). Do4U loads it once in the background. If that fails, the job fails with error image_unavailable and costs nothing.
optionsObject with options of the tool, for example {"length": "short"}.
languageLanguage of the result and notes: en, de or pl. Default en. For translate, the target language is the option target.
no_storetrue: the input is deleted right after processing and the result after the first retrieval.
brand_voiceOptional: false switches your brand voice off for this job (default: the brand voice applies if you have set one).
ai_labelOptional: true shows the visible note "Marked as AI-generated" with the result in the web interface, false hides it. Default: the setting in your account. The machine-readable AI label is always in the result and cannot be switched off: the fields ai_generated and generator, an HTML comment in HTML results, ai_notice for image descriptions. ai_generated is false if the result comes from automatic checks only.
callback_urlOptional: public https address that gets a signed POST when the job is finished (see Webhooks).
render_jsOptional: true loads the page with JavaScript first (pages that build their content in the browser; tools that read a url). Costs the render surcharge only if the page was really loaded this way; the result field render says what happened.
no_cacheOptional: true always starts a new AI job. Without it, a finished and still stored result of your account (or workspace) with the same tool, options and input is reused: the job is done at once, from_history is true and it costs 0 % of the credits of the original. Never with no_store, never for a url.
allow_same_languageOptional for translate, translate_html and translate_file: true translates even if the text already is in the target language. Without it such a job is rejected with same_language (400) – only when the check is sure.

Repeat requests safely (Idempotency-Key)

Send the header Idempotency-Key with POST /jobs, for example a random UUID for each job (1 to 255 printable ASCII characters). If the connection breaks and you send the same request again with the same Idempotency-Key and the same API key within 24 hours, you get the same answer again: the same job, no second job and no second charge. The answer then has the header Idempotent-Replayed: true. Use a new key for every new job. If you send the same key with a different request, you get 422 idempotency_conflict. Errors are not stored: after an error you can send the request again with the same key.

curl -X POST https://do4u.eu/api/v1/jobs \
  -H "Authorization: Bearer d4u_YOUR_KEY" \
  -H "Idempotency-Key: 5f0c2a8e-7d1b-4c3a-9e2f-1b6d8a4c0e77" \
  -H "Content-Type: application/json" \
  -d '{"tool": "summarize", "text": "..."}'

Tools and options

ToolInputs Options (first value is the default)Result fieldsPrice
moderate_commentПроверка на коментари за спам text – classification, reason, suggestion, action, note обикновено 1–3 кредита
document_htmlДокументи в HTML image, pdf, text page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 html, plain_text, notes, page, note обикновено 2–3 кредита
image_textНамери текст във вградени изображения url image_index: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 html, plain_text, notes, images, image_index, coverage, note обикновено 2–3 кредита
pdf_accessibilityПроверка на достъпността на PDF pdf – checks, pages, truncated, repaired, note, convert_url обикновено 1–2 кредита
summarizeРезюме text, url length: medium | short | long summary, key_points обикновено 1–3 кредита
compareСравнение text, text_b focus: overall | facts | tone | seo summary, similarities, differences обикновено 1–3 кредита
support_replyОтговор до клиент text, faq tone: friendly | neutral | formal reply, concerns, questions обикновено 1–3 кредита
alt_textАлтернативни текстове image, text, filename, image_url – alt, caption, description, filename, filename_base, extension, language, alt_length, alt_max, alt_status, caption_length, caption_max, caption_status обикновено 2–3 кредита
rewriteПреработка text style: simpler | shorter | more_formal | more_casual | more_persuasive | easy_to_read text, changes, language, style_label, readability, easy_check, easy_note, review_status, review_limit, diff обикновено 1–4 кредита
accessibility_checkПроверка на достъпността url, html – summary, page, counts, findings, checks, readability, note fixed 3 credits per task
seo_metaSEO заглавие и описание url, text, focus_keyword, questions target: en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv variants, current, focus_keyword, limits, keywords, note fixed 1 credit per task
translate_htmlПревод на HTML html target: en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv html, segments, check, glossary, notes, note, review_status, alignment обикновено 1–4 кредита
product_descriptionОписания на продукти text tone: neutral | friendly | persuasive | formallength: medium | short | longchannel: shop | marketplacetarget: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | svmeta_description: no | yes products, language, detected_language, channel, format, limits, counts, check, note обикновено 1–3 кредита
headlinesЗаглавия и теми на имейли text kind: page | newsletter | adtone: neutral | friendly | persuasive | formalcount: 5 | 3 | 8target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv kind, fields, variants, limits, counts, enough, report, language, detected_language, note fixed 1 credit per task
faq_schemaЧЗВ и schema markup url, text, questions type: faq | organization | localbusiness | productcount: 8 | 5 | 10target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv type, kind, jsonld, html, valid, faq, fields, checks, counts, unverified, dropped, existing, existing_errors, existing_same, page, language, detected_language, notes, note, visitor_questions fixed 2 credits per task
content_briefБриф за съдържание text, audience, questions target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv title, title_length, title_max, title_status, goal, intent, outline, questions, length, markdown, counts, dropped, limits, language, detected_language, notes, note обикновено 1–2 кредита
review_replyОтговори на отзиви text, company stars: 0 | 1 | 2 | 3 | 4 | 5platform: general | google | trustpilot | booking | tripadvisor | airbnb | yelp | app_store | google_playtone: friendly | neutral | formalcount: 3 | 2target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv assessment, variants, limits, platform, stars, tone, counts, dropped, enough, report, hints, checks, language, detected_language, note обикновено 1–2 кредита
social_postsПостове в социални мрежи от статия url, text channels: all | linkedin | facebook | instagram | linkedin+facebook | linkedin+instagram | facebook+instagramtone: friendly | neutral | persuasive | formal | casualvariants: 1 | 2 | 3target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv channels, posts, limits, counts, enough, report, link, link_in_bio, language, detected_language, source, notes, note обикновено 1–3 кредита
explain_termsОбясни термини url, text level: simple | general | expertexamples: no | yestarget: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv terms, level, language, detected_language, source, text_length, text_clipped, counts, dropped, adjusted, limits, other_candidates, checks, markdown, html, notes, note обикновено 1–3 кредита
extract_dataИзвлечи данни url, text types: all | hours | prices | hours+prices | addresses | hours+addresses | prices+addresses | hours+prices+addresses | events | hours+events | prices+events | hours+prices+events | addresses+events | hours+addresses+events | prices+addresses+events | hours+prices+addresses+events | contact | hours+contact | prices+contact | hours+prices+contact | addresses+contact | hours+addresses+contact | prices+addresses+contact | hours+prices+addresses+contact | events+contact | hours+events+contact | prices+events+contact | hours+prices+events+contact | addresses+events+contact | hours+addresses+events+contact | prices+addresses+events+contacttarget: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv kinds, hours, prices, addresses, events, contact, counts, empty, unverified, dropped, limits, source, language, detected_language, notes, note обикновено 1–3 кредита
redirect_planПлан за пренасочване old_urls, new_urls, old_domain, new_domain ai: yes | no old_base, new_base, mappings, counts, unused_new, invalid, dropped, ai, legend, language, domain_ignored, notes, note обикновено 1–3 кредита
contrast_checkПроверка на цветовия контраст colors level: aa | aaatext_size: normal | large colors, pairs, counts, invalid, settings, palette_check, legend, language, note обикновено 1–2 кредита
language_levelЕзиково ниво (A1–C1) text level: B1 | A1 | A2 | B2 | C1target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | svkeep_terms: no | yes text, changes, level, language, detected_language, translated, summary, within_guideline, measures, over_guideline, over_count, readability, content, kept_terms, checks, hints, note обикновено 1–4 кредита
llms_txtГенератор на llms.txt url target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv name, summary, details, file, filename, sections, counts, pages_read, read, existing, dropped, hints, language, detected_language, notes, note обикновено 1–3 кредита
internal_linksВътрешни връзки text, pages, sitemap_url, page_url – links, text, text_is_html, counts, pages, dropped, ai, limits, language, detected_language, timeout, notes, note обикновено 1–3 кредита
outdated_contentОстаряло съдържание url, text, html, reference_date target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv reference_date, reference_date_given, findings, summary, counts, source, dropped, ai, limits, language, detected_language, timeout, notes, note обикновено 1–3 кредита
inclusive_languageПриобщаващ и прост език text scope: both | exclusion | complexitygender: not_prescribed | neutral | pair | star | colon | brand_voice language, scope, gender, summary, counts, findings, candidates, measures, applied, changed, revised_text, diff, dropped, checks, hints, note обикновено 1–3 кредита
review_analysisАнализ на отзиви text focus: all | criticismtarget: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv format, columns, language, detected_language, focus, counts, selection, stars, period, languages, languages_unknown, personal_data, themes, praise, criticism, page, faq, cited, dropped, limits, hints, notes, note обикновено 1–3 кредита
ai_visibility_checkПроверка на видимостта за ИИ url, text, html, topic, questions target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv coverage, coverage_level, counts, questions, faq_questions, sections, qa_on_page, structured_data, llms_txt, robots_txt, readability, hints, source, topic, dropped, ai, limits, files, language, detected_language, note, how обикновено 1–3 кредита
events_calendarСъбития в календар url, text, time_zone, year target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv events, counts, unverified, dropped, timezone, year, today, limits, ics, jsonld, filename, source, language, detected_language, notes, note обикновено 1–3 кредита
product_photoОт снимка на продукт към текст image, image_url, text, languages target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | svcategory_list: google | free language, detected_language, title, title_length, title_max, title_status, short_description, short_length, short_max, short_status, description, description_length, description_max, description_status, bullets, bullets_count, bullets_max_length, bullets_status, alt_text, alt_length, alt_max, alt_status, category_group, attributes, attribute_sources, attribute_list, translations, removed, hints, claims_checked, claims_unchecked, counts, limits, notes, category_list, jsonld, jsonld_check, product_json, check, note обикновено 2–3 кредита
chart_descriptionОписание на диаграми и инфографики image, image_url, text target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | svlength: normal | short chart_type, title, language, detected_language, alt, alt_length, alt_max, alt_status, description, description_length, description_max, description_status, description_size, axes, data, data_rows, table, data_csv, html, image_text, pie_check, hints, counts, limits, notes, verify_numbers, check, note обикновено 2–3 кредита
design_feedbackОбратна връзка за дизайн от екранна снимка image, image_url, text target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | svdevice: auto | phone | desktop language, detected_language, device, summary, findings, image, image_basis, counts, removed, hints, limits, notes, estimate, check, note, text, markdown обикновено 2–3 кредита
job_ad_checkПроверка на обява за работа url, text, html jurisdiction: auto | eu | de | pltarget: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv language, detected_language, jurisdiction, title, checklist, counts, pay, structure, length, findings, titles, summary, source, text_cut, dropped, ai, hints, note обикновено 1–3 кредита
green_claims_checkПроверка на екологични твърдения url, text, html target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv findings, summary, counts, source, dropped, ai, limits, legal, language, detected_language, timeout, notes, note обикновено 1–3 кредита
third_party_scanПроверка на услуги на трети страни url, html – url, host, page_from, static_only, counts, consent, groups, cookies, legend, notes, check, note, truncated, checked_at обикновено 1–2 кредита
broken_link_checkПроверка за счупени връзки url resources: yes | noexternal: no | yes language, url, host, counts, broken, more_broken, redirects, more_redirects, soft, start_soft, suggestions, not_reached, limits, note, truncated обикновено 1–2 кредита
duplicate_content_checkПроверка за дублирано съдържание url, text – language, mode, url, host, summary, counts, findings, passed, hints, thresholds, pages, limits, note, truncated обикновено 1–2 кредита
hreflang_checkПроверка на hreflang url – language, url, counts, findings, pages, matrix, annotations, legend, limits, note обикновено 1–2 кредита
ai_robots_txtИИ ботове в robots.txt site_url, robots_txt, groups, crawlers – file, file_complete, ai_section, crawlers, counts, source, existing, changes, checks, notes, legend, sources, verified_on, language, note обикновено 1–2 кредита
faq_from_supportЧЗВ от запитвания към поддръжката text, faq_url target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv format, input_kind, columns, language, detected_language, languages, counts, selection, faq_page, personal_data, topics, gaps, cited, dropped, limits, placeholder, hints, notes, note, export обикновено 1–3 кредита
price_display_checkПроверка на обозначаването на цените url, text, html ai: yes | nojurisdiction: auto | de | pl jurisdiction, jurisdiction_auto, jurisdiction_label, source, price, previous_prices, prior_30_days, unit_prices, quantities, discounts, hints, structured, findings, counts, checks, ai, dropped, legal_sources, language, notes, note обикновено 1–3 кредита
form_text_checkТекстове във формуляри url, html, error_messages target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | svtone: neutral | friendly | formal language, detected_language, tone, required_word, forms, errors, counts, criteria, summary, source, dropped, ai, hints, note обикновено 1–3 кредита
newsletter_checkПроверка на бюлетин html, eml, text, subject, preheader target: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv language, detected_language, input, subject, preheader, checklist, counts, links, links_total, images, eml, pairs, improvements, text_cut, dropped, ai, hints, note обикновено 1–3 кредита
privacy_policy_matchПроверка на политиката за поверителност website_url, pages, policy_url, policy_text – website, pages, policy, not_in_policy, not_found, matched, categories, counts, dropped, ai, limits, legal, notes, check, note, checked_at обикновено 1–3 кредита
social_card_checkПроверка на карта за социални мрежи url – language, url, counts, preview, findings, tags, images, snippet, guidance, limits, note обикновено 1–2 кредита
image_performance_checkПроверка на изображения url – language, url, counts, total, formats, lcp, page_findings, summary, images, more_images, legend, limits, note, truncated обикновено 1–2 кредита
ai_transparency_checkПроверка на прозрачността за ИИ url, text, html chatbot: auto | yes | nomedia: unknown | no | realistic | artistic | illustrativearticles: unknown | no | unreviewed | reviewedtarget: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv language, detected_language, source, answers, checklist, detected, notices, summary, counts, dropped, ai, legal, hints, note обикновено 1–3 кредита
structured_data_checkПроверка на структурирани данни url, html – language, url, input, counts, formats, findings, items, rules, visible, limits, truncated, note обикновено 1–2 кредита
legal_notice_checkПроверка на правната информация (Impressum) url, text, html ai: yes | nojurisdiction: auto | de | pl jurisdiction, jurisdiction_auto, jurisdiction_basis, jurisdiction_label, source, entity, items, extra, counts, ai, dropped, legal_sources, language, notes, note, truncated обикновено 1–3 кредита
glossary_builderСъздай речник url, text, html, languages source: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | svmax_pages: 1 | 2 | 3 | 5 | 10 language, language_name, language_source, targets, target_names, items, existing, counts, pages, reading, source, text_cut, dropped, glossary, hints, note, export обикновено 1–3 кредита
local_business_checkПроверка на фирмените данни url, text ai: no | yes language, url, host, mode, country, table, findings, counts, structured, suggestion, handover, pages, failed, not_reached, limits, ai, dropped, notes, note обикновено 1–2 кредита
consent_preload_checkЗарежда ли се нещо преди съгласие? url – url, final_url, host, loaded, counts, timing, consent, groups, cookies, storage, notes, check, law, note, truncated, checked_at обикновено 1–2 кредита
ai_literacy_policyПолитика за грамотност в областта на ИИ (Акт за ИИ, чл. 4) text, uses, roles, data, company_name company_size: 1-9 | 10-49 | 50-249 | 250+sector: general | retail | services | crafts | health | finance | education | public_sector | media | it | manufacturing | tourism | socialreview_months: 12 | 6 | 24language: auto | en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv language, title, sections, training, record_columns, markdown, text, profile, counts, dropped, legal, hints, note обикновено 1–2 кредита
withdrawal_button_checkПроверка на бутона за отказ url, text, html ai: yes | nojurisdiction: auto | de | pl | eusubscriptions: auto | yes | no jurisdiction, jurisdiction_auto, jurisdiction_basis, jurisdiction_label, law, source, subscription, items, candidates, counts, ai, dropped, legal_sources, language, notes, note, truncated обикновено 1–3 кредита
product_safety_checkПроверка на продуктова страница (GPSR) url, text, html market_language: auto | bg | cs | da | de | el | en | es | fi | fr | hr | hu | it | lt | nl | pl | pt | ro | sk | sl | sv language, market_language, market_language_label, market_basis, page_language, source, product, manufacturer_seat, items, counts, dropped, ai, hints, notes, legal, legal_sources, note обикновено 1–3 кредита
website_checkПроверка на сайт url scope: short | full score, categories, findings, counts, snippet, llms_txt, summary, actions, note fixed 5 credits per task
translateПревод text target: en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | sv translation, notes, review_status, alignment обикновено 1–4 кредита
proofreadКоректура text text_language: auto | en | de | pl | fr | es | it | pt | nl | cs | sk | uk | ru | bg | ro | hu | sv | da | fi | tr | el | ar | fa | he | hi | zh | ja | ko | th text, html, language, identical, summary, counts, changed_share, changes, notes, beta, note обикновено 1–4 кредита
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Job status

queued and running: still working (position and wait_seconds help you to wait). done: result contains the fields of the tool. failed: nothing was charged (credits is 0); error.code names the reason: address_blocked (Do4U does not open this address, for example a private or internal one; send the text or HTML instead), input_too_large (shorten the input), image_unavailable or job_failed. expired: the result is no longer stored.

Уебкуки

Добави "callback_url" към POST /api/v1/jobs и Do4U изпраща подписан POST (събитие job.finished със статус, кредити и линк към резултата - не самия резултат), щом задачата приключи. Само публични адреси на порт 80 или 443; опитваме до 6 пъти с нарастващи паузи.

Пример: създай задача с callback_url – и заявката, която Do4U изпраща на този адрес, когато задачата приключи:

curl -X POST https://do4u.eu/api/v1/jobs \
  -H "Authorization: Bearer d4u_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"tool": "summarize", "text": "...", "callback_url": "https://example.com/do4u-hook"}'
POST /do4u-hook
Content-Type: application/json
X-Do4U-Event: job.finished
X-Do4U-Signature: t=1793180000,v1=6b1f...

{"event":"job.finished","id":"8f1c0b6a...","tool":"summarize","status":"done","credits":1,
 "created":"2026-10-28T10:00:00+01:00","finished":"2026-10-28T10:00:04+01:00","result_url":"https://do4u.eu/api/v1/jobs/8f1c0b6a..."}

Провери заглавката X-Do4U-Signature: t=<time>,v1=<hex>, където v1 = HMAC-SHA256(secret, "<time>.<raw body>"). Отхвърляй стари времена (напр. по-стари от 5 минути). Тайната ти започва с whsec_ и се показва на страницата API ключове.

// Node.js: rawBody = the request body exactly as received (string)
const crypto = require('crypto');
function do4uSignatureOk(rawBody, header, secret) {
  const t = (header.match(/t=(\d+)/) || [])[1];
  const v1 = (header.match(/v1=([0-9a-f]{64})/) || [])[1];
  if (!t || !v1 || Math.abs(Date.now() / 1000 - Number(t)) > 300) return false;
  const expected = crypto.createHmac('sha256', secret).update(t + '.' + rawBody).digest('hex');
  return crypto.timingSafeEqual(Buffer.from(expected), Buffer.from(v1));
}
// PHP
function do4u_signature_ok(string $raw, string $header, string $secret): bool {
    if (!preg_match('/t=(\d+),v1=([0-9a-f]{64})/', $header, $m) || abs(time() - (int)$m[1]) > 300) return false;
    return hash_equals(hash_hmac('sha256', $m[1] . '.' . $raw, $secret), $m[2]);
}
$ok = do4u_signature_ok(file_get_contents('php://input'), $_SERVER['HTTP_X_DO4U_SIGNATURE'] ?? '', 'whsec_YOUR_SECRET');

credits.low

Когато балансът от кредити на акаунт падне под прага, Do4U изпраща един подписан POST към webhook адреса на акаунта. Събитието не съдържа лични данни, само баланса, прага и часа (UTC). Следващото идва едва след като отново бъдат добавени кредити (покупка, месечни безплатни кредити или ваучер). Подписът и тайният ключ са същите като при job.finished.

POST /do4u-hook
Content-Type: application/json
X-Do4U-Event: credits.low
X-Do4U-Signature: t=1793180000,v1=6b1f...

{"event":"credits.low","balance":18,"threshold":20,"ts":"2026-10-29T10:00:04Z"}

Адреса и прага задаваш тук: API ключове

n8n

Готов работен процес: уебкук получава извикването от Do4U, проверява подписа, взема резултата и го предава на следващата ти стъпка.

Изтегли шаблона за n8n (JSON)

Шаблон, още не тестван в реална инстанция на n8n или Make – моля, тествай проверката на подписа, преди да го използваш.

В n8n: Workflows → Import from file. После въведи тайната си във възела "Check signature" и API ключа си в "Do4U: get result", активирай работния процес и използвай продукционния URL на уебкука като callback_url. Самостоятелно хостваният n8n изисква променливата на средата NODE_FUNCTION_ALLOW_BUILTIN=crypto за проверката на подписа.

Make

  1. Добави модула Webhooks → Custom webhook като тригер и включи "JSON pass-through" и "Get request headers" в разширените му настройки.
  2. Използвай адреса на този уебкук като callback_url.
  3. Провери подписа: сравни v1 от заглавката X-Do4U-Signature с sha256(t + "." + raw body; hex; твоята тайна).
  4. Добави HTTP → Make a request: GET към result_url със заглавка Authorization: Bearer <your API key>.
  5. Използвай полето result в следващите си модули.

Шаблон, още не тестван в реална инстанция на n8n или Make – моля, тествай проверката на подписа, преди да го използваш.

Рецепти: свържи инструменти във верига

Рецептата изпълнява от 2 до 4 инструмента един след друг като една задача. Изпрати "recipe" вместо "tool": или името на готова рецепта, или списък със стъпки. Текстът влиза в първата стъпка; резултатът от всяка стъпка е текстът за следващата стъпка. GET /api/v1/recipes изброява готовите рецепти, инструментите, които можеш да използваш, и полето, което всеки инструмент предава нататък.

curl -X POST https://do4u.eu/api/v1/jobs \
  -H "Authorization: Bearer d4u_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"recipe": [{"tool": "summarize", "options": {"length": "short"}},
               {"tool": "translate", "options": {"target": "pl"}}], "text": "..."}'
curl -X POST https://do4u.eu/api/v1/jobs \
  -H "Authorization: Bearer d4u_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"recipe": "summary_translate_meta", "options": {"target": "pl"}, "text": "..."}'

Получаваш една оценка за всички стъпки (credits_estimate). Тази сума се резервира при старта. След всяка стъпка реалното използване се осчетоводява, а остатъкът остава резервиран до края, след което се освобождава. Неуспешна стъпка не струва нищо, останалите стъпки се пропускат, а вече завършените стъпки се таксуват.

HTTP/1.1 202 Accepted
{"id": "3c9e0d1a...", "tool": "recipe", "recipe": null, "status": "queued", "model": "do4u-standard", "credits_estimate": 4,
 "steps": [{"n": 1, "tool": "summarize", "credits_estimate": 2}, {"n": 2, "tool": "translate", "credits_estimate": 2}],
 "links": {"self": "https://do4u.eu/api/v1/jobs/3c9e0d1a..."}}

GET /api/v1/jobs/{id} показва всяка стъпка със статуса ѝ (pending, queued, running, done, failed, skipped), кредитите ѝ, известие input_shortened, ако текстът е трябвало да бъде скъсен за следващия инструмент, и резултата от всяка стъпка, след като рецептата е приключила. С no_store резултатите се показват веднъж. callback_url се задейства веднъж, в края на рецептата.

GET https://do4u.eu/api/v1/jobs/3c9e0d1a...

{"id": "3c9e0d1a...", "tool": "recipe", "status": "done", "credits_estimate": 4, "credits": 3, "steps_total": 2,
 "steps": [{"n": 1, "tool": "summarize", "status": "done", "credits": 1, "result": {"summary": "...", "key_points": ["..."]}},
           {"n": 2, "tool": "translate", "status": "done", "credits": 2, "notices": ["input_shortened"], "result": {"translation": "...", "notes": []}}],
 "result": {"translation": "...", "notes": []}}

GET https://do4u.eu/api/v1/recipes

Errors

Errors always have the same form: {"error": {"code": "...", "message": "..."}}. With 429 and 503 the header Retry-After says how many seconds to wait.

CodeHTTPMeaning
missing_key401No API key sent.
invalid_key401Key unknown or revoked.
rate_limited429Too many requests in this minute.
invalid_json400Body is not a JSON object.
unknown_tool400No tool with this name.
invalid_option400Unknown option or value.
invalid_field400A field has the wrong type.
invalid_language400language is not en, de or pl.
empty_input400No text or URL.
text_b_required400compare needs text and text_b.
input_too_long400Input longer than your limit.
input_too_large400Input too large for one job: shorten it or split it into several jobs.
invalid_url400URL not allowed or not readable.
invalid_image400Image missing, wrong format or too large.
payload_too_large413Request body larger than 8 MB.
insufficient_credits402Not enough credits.
email_not_verified402Confirm your email address first.
daily_limit429Free daily limit used up (website_check scope short).
too_many_open_jobs429Too many open jobs in your account.
package_required403The tool needs a purchased package.
busy503The queue is full, try again shortly.
tool_unavailable503The tool is not available right now.
not_found404Unknown endpoint or job.
method_not_allowed405Wrong HTTP method.
internal_error500Error on our side.
invalid_idempotency_key400Idempotency-Key is empty, too long or has characters that are not printable ASCII.
idempotency_conflict422This Idempotency-Key was already used with a different request.
idempotency_in_progress409A request with this Idempotency-Key is still running. Wait a moment (Retry-After).
idempotency_unavailable503Idempotency-Key cannot be used right now. Try again later.
same_language400The text already is in the target language (translate tools). Send allow_same_language: true to translate anyway.

Limits

Credits

A new job shows an estimate (credits_estimate); charged is the actual use (credits). Failed jobs cost nothing. Free credits are used first.

Data

Inputs and results are stored for 7 days (Free) or 30 days (paid packages), then deleted. Images are deleted right after processing. Results are AI-generated: please check them before you use them.

Отговаряй на имейли, без да сменяш входящата си поща

Do4U не поддържа входяща кутия и никога не съхранява данни за достъп до пощенската ти кутия. Два начина да получаваш чернови на отговори въпреки това:

S1 – Шаблон за n8n или Make

  1. Тригер: нов имейл в пощенската ти кутия (IMAP тригер в n8n или Make – данните за достъп остават там)
  2. POST /api/v1/jobs с инструмент support_reply, текста на имейла и no_store: true
  3. Изчакай няколко секунди и вземи GET /api/v1/jobs/{id}, докато статусът стане done
  4. Създай чернова в пощенската си кутия с текста от result.reply (модул за Gmail или Outlook)

Изтегли шаблона за n8n (JSON)

В Make изгради същия сценарий от модулите Email (watch emails), HTTP (make a request), Sleep и Gmail или Outlook (create a draft).

Разширения за разработчици и добавки за магазини

Разархивирай ZIP файла и прочети включеното ръководство. Зареди разширението за браузъра локално; първо провери добавките за магазини в тестов магазин. Нужен ти е собствен Dev API ключ. За Shopware в момента има CLI.