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
| tool | Name of the tool, see the table below. Required. |
| text | Input text. For compare: text A. For alt_text: optional page context. |
| text_b | Text B (compare only). |
| url | Public web page to read instead of text (summarize, accessibility_check). |
| html | HTML of a page to check (accessibility_check), up to 300,000 characters. |
| focus_keyword | Optional focus keyword for seo_meta. Without target, seo_meta writes in language. |
| faq | Optional FAQ snippets (support_reply only). |
| questions | Optional 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. |
| image | Image 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_url | Optional 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. |
| options | Object with options of the tool, for example {"length": "short"}. |
| language | Language of the result and notes: en, de or pl. Default en. For translate, the target language is the option target. |
| no_store | true: the input is deleted right after processing and the result after the first retrieval. |
| brand_voice | Optional: false switches your brand voice off for this job (default: the brand voice applies if you have set one). |
| ai_label | Optional: 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_url | Optional: public https address that gets a signed POST when the job is finished (see Webhooks). |
| render_js | Optional: 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_cache | Optional: 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_language | Optional 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
| Tool | Inputs | Options (first value is the default) | Result fields | Price |
|---|---|---|---|---|
| moderate_commentGranska kommentarer för skräppost | text | – | classification, reason, suggestion, action, note | vanligtvis 1–3 krediter |
| document_htmlGör dokument till 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 | vanligtvis 2–3 krediter |
| image_textHitta text som är inbakad i bilder | 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 | vanligtvis 2–3 krediter |
| pdf_accessibilityKontrollera PDF-tillgänglighet | – | checks, pages, truncated, repaired, note, convert_url | vanligtvis 1–2 krediter | |
| summarizeSammanfatta | text, url | length: medium | short | long | summary, key_points | vanligtvis 1–3 krediter |
| compareJämför | text, text_b | focus: overall | facts | tone | seo | summary, similarities, differences | vanligtvis 1–3 krediter |
| support_replySupportsvar | text, faq | tone: friendly | neutral | formal | reply, concerns, questions | vanligtvis 1–3 krediter |
| alt_textAlternativtexter | 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 | vanligtvis 2–3 krediter |
| rewriteSkriv om | 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 | vanligtvis 1–4 krediter |
| accessibility_checkTillgänglighetskontroll | url, html | – | summary, page, counts, findings, checks, readability, note | fixed 3 credits per task |
| seo_metaSEO-titel och beskrivning | 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_htmlÖversätt 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 | vanligtvis 1–4 krediter |
| product_descriptionProduktbeskrivningar | 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 | vanligtvis 1–3 krediter |
| headlinesRubriker och ämnesrader | 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_schemaFAQ och schemamarkering | 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_briefInnehållsbrief | 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 | vanligtvis 1–2 krediter |
| review_replySvar på recensioner | 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 | vanligtvis 1–2 krediter |
| social_postsInlägg i sociala medier från en artikel | 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 | vanligtvis 1–3 krediter |
| explain_termsFörklara termer | 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 | vanligtvis 1–3 krediter |
| extract_dataExtrahera data | 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 | vanligtvis 1–3 krediter |
| redirect_planOmdirigeringsplan | 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 | vanligtvis 1–3 krediter |
| contrast_checkKontroll av färgkontrast | colors | level: aa | aaatext_size: normal | large | colors, pairs, counts, invalid, settings, palette_check, legend, language, note | vanligtvis 1–2 krediter |
| language_levelSpråknivå (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 | vanligtvis 1–4 krediter |
| llms_txtllms.txt-generator | 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 | vanligtvis 1–3 krediter |
| internal_linksInterna länkar | text, pages, sitemap_url, page_url | – | links, text, text_is_html, counts, pages, dropped, ai, limits, language, detected_language, timeout, notes, note | vanligtvis 1–3 krediter |
| outdated_contentFöråldrat innehåll | 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 | vanligtvis 1–3 krediter |
| inclusive_languageInkluderande och enkelt språk | 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 | vanligtvis 1–3 krediter |
| review_analysisRecensionsanalys | 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 | vanligtvis 1–3 krediter |
| ai_visibility_checkKontroll av AI-synlighet | 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 | vanligtvis 1–3 krediter |
| events_calendarEvenemang till kalendern | 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 | vanligtvis 1–3 krediter |
| product_photoProduktfoto till text | 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 | vanligtvis 2–3 krediter |
| chart_descriptionBeskriv diagram och infografik | 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 | vanligtvis 2–3 krediter |
| design_feedbackDesignfeedback från en skärmbild | 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 | vanligtvis 2–3 krediter |
| job_ad_checkKontroll av platsannonser | 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 | vanligtvis 1–3 krediter |
| green_claims_checkKontroll av miljöpåståenden | 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 | vanligtvis 1–3 krediter |
| third_party_scanKontroll av tredjepartstjänster | url, html | – | url, host, page_from, static_only, counts, consent, groups, cookies, legend, notes, check, note, truncated, checked_at | vanligtvis 1–2 krediter |
| broken_link_checkKontroll av trasiga länkar | 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 | vanligtvis 1–2 krediter |
| duplicate_content_checkKontroll av duplicerat innehåll | url, text | – | language, mode, url, host, summary, counts, findings, passed, hints, thresholds, pages, limits, note, truncated | vanligtvis 1–2 krediter |
| hreflang_checkhreflang-kontroll | url | – | language, url, counts, findings, pages, matrix, annotations, legend, limits, note | vanligtvis 1–2 krediter |
| ai_robots_txtAI-crawlers i 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 | vanligtvis 1–2 krediter |
| faq_from_supportFAQ från supportmeddelanden | 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 | vanligtvis 1–3 krediter |
| price_display_checkKontroll av prisangivelser | 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 | vanligtvis 1–3 krediter |
| form_text_checkFormulärtexter | 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 | vanligtvis 1–3 krediter |
| newsletter_checkNyhetsbrevskontroll | 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 | vanligtvis 1–3 krediter |
| privacy_policy_matchKontroll av integritetspolicy | 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 | vanligtvis 1–3 krediter |
| social_card_checkKontroll av delningskort | url | – | language, url, counts, preview, findings, tags, images, snippet, guidance, limits, note | vanligtvis 1–2 krediter |
| image_performance_checkBildkontroll | url | – | language, url, counts, total, formats, lcp, page_findings, summary, images, more_images, legend, limits, note, truncated | vanligtvis 1–2 krediter |
| ai_transparency_checkKontroll av AI-transparens | 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 | vanligtvis 1–3 krediter |
| structured_data_checkKontroll av strukturerad data | url, html | – | language, url, input, counts, formats, findings, items, rules, visible, limits, truncated, note | vanligtvis 1–2 krediter |
| legal_notice_checkKontroll av 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 | vanligtvis 1–3 krediter |
| glossary_builderBygg en ordlista | 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 | vanligtvis 1–3 krediter |
| local_business_checkKontroll av företagsuppgifter | 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 | vanligtvis 1–2 krediter |
| consent_preload_checkLaddas något före samtycke? | url | – | url, final_url, host, loaded, counts, timing, consent, groups, cookies, storage, notes, check, law, note, truncated, checked_at | vanligtvis 1–2 krediter |
| ai_literacy_policyPolicy för AI-kunnighet (AI-förordningen art. 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 | vanligtvis 1–2 krediter |
| withdrawal_button_checkKontroll av ångerknapp | 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 | vanligtvis 1–3 krediter |
| product_safety_checkKontroll av produktsida (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 | vanligtvis 1–3 krediter |
| website_checkWebbplatskontroll | url | scope: short | full | score, categories, findings, counts, snippet, llms_txt, summary, actions, note | fixed 5 credits per task |
| translateÖversätt | 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 | vanligtvis 1–4 krediter |
| proofreadKorrekturläsning | 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 | vanligtvis 1–4 krediter |
| translate_fileSpråkfiler | text | target: en | de | pl | fr | es | it | nl | cs | sk | uk | bg | da | el | fi | hr | hu | lt | pt | ro | sl | svscope: auto | all | missingline_endings: lf | crlf | lf_no_final_newline | crlf_no_final_newline | format, target, filename, mime, file, entries, counts, flagged, preview, check, notes, note | vanligtvis 5–8 krediter |
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.
Webhooks
Lägg till "callback_url" i POST /api/v1/jobs, så skickar Do4U en signerad POST (händelsen job.finished med status, krediter och resultatlänken - inte själva resultatet) så fort jobbet är klart. Bara offentliga adresser på port 80 eller 443; vi försöker igen upp till 6 gånger med växande pauser.
Exempel: skapa ett jobb med callback_url – och anropet som Do4U skickar till den adressen när jobbet är klart:
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..."} Kontrollera rubriken X-Do4U-Signature: t=<time>,v1=<hex>, där v1 = HMAC-SHA256(secret, "<time>.<raw body>"). Avvisa gamla tidsvärden (t.ex. äldre än 5 minuter). Din hemlighet börjar med whsec_ och visas på sidan API-nycklar.
// 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
När ett kontos kreditsaldo sjunker under tröskelvärdet skickar Do4U en signerad POST till kontots webhook-adress. Händelsen innehåller inga personuppgifter, bara saldot, tröskelvärdet och tiden (UTC). Nästa kommer först efter att krediter har lagts till igen (köp, månatliga gratiskrediter eller kupong). Signatur och hemlighet är desamma som för 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"} Du anger adressen och tröskelvärdet här: API-nycklar
n8n
Färdigt arbetsflöde: en webhook tar emot anropet från Do4U, kontrollerar signaturen, hämtar resultatet och lämnar över det till ditt nästa steg.
Mall, ännu inte testad i en riktig n8n- eller Make-instans – testa signaturkontrollen innan du använder den.
I n8n: Workflows → Import from file. Ange sedan din hemlighet i noden "Check signature" och din API-nyckel i "Do4U: get result", aktivera arbetsflödet och använd webhookens produktions-URL som callback_url. Självhostad n8n behöver miljövariabeln NODE_FUNCTION_ALLOW_BUILTIN=crypto för signaturkontrollen.
Make
- Lägg till modulen Webhooks → Custom webhook som utlösare och slå på "JSON pass-through" och "Get request headers" i dess avancerade inställningar.
- Använd den här webhookens adress som callback_url.
- Kontrollera signaturen: jämför v1 från rubriken X-Do4U-Signature med sha256(t + "." + raw body; hex; din hemlighet).
- Lägg till HTTP → Make a request: GET på result_url med rubriken Authorization: Bearer <your API key>.
- Använd fältet result i dina nästa moduler.
Mall, ännu inte testad i en riktig n8n- eller Make-instans – testa signaturkontrollen innan du använder den.
Recept: kedja verktyg
Ett recept kör 2 till 4 verktyg efter varandra som ett enda jobb. Skicka "recipe" i stället för "tool": antingen namnet på ett färdigt recept eller en lista med steg. Texten går in i det första steget. Resultatet av varje steg är texten för nästa steg. GET /api/v1/recipes listar de färdiga recepten, de verktyg du kan använda och det fält som varje verktyg för vidare.
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": "..."}' Du får en uppskattning för alla steg (credits_estimate). Det beloppet reserveras vid starten. Efter varje steg bokförs den verkliga användningen och resten förblir reserverad till slutet och frigörs sedan. Ett misslyckat steg kostar ingenting, de återstående stegen hoppas över, och steg som redan var klara debiteras.
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} visar varje steg med sin status (pending, queued, running, done, failed, skipped), sina krediter, ett meddelande input_shortened om texten behövde kortas för nästa verktyg, samt resultatet av varje steg när receptet har avslutats. Med no_store visas resultaten en enda gång. callback_url anropas en gång, vid receptets slut.
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.
| Code | HTTP | Meaning |
|---|---|---|
| missing_key | 401 | No API key sent. |
| invalid_key | 401 | Key unknown or revoked. |
| rate_limited | 429 | Too many requests in this minute. |
| invalid_json | 400 | Body is not a JSON object. |
| unknown_tool | 400 | No tool with this name. |
| invalid_option | 400 | Unknown option or value. |
| invalid_field | 400 | A field has the wrong type. |
| invalid_language | 400 | language is not en, de or pl. |
| empty_input | 400 | No text or URL. |
| text_b_required | 400 | compare needs text and text_b. |
| input_too_long | 400 | Input longer than your limit. |
| input_too_large | 400 | Input too large for one job: shorten it or split it into several jobs. |
| invalid_url | 400 | URL not allowed or not readable. |
| invalid_image | 400 | Image missing, wrong format or too large. |
| payload_too_large | 413 | Request body larger than 8 MB. |
| insufficient_credits | 402 | Not enough credits. |
| email_not_verified | 402 | Confirm your email address first. |
| daily_limit | 429 | Free daily limit used up (website_check scope short). |
| too_many_open_jobs | 429 | Too many open jobs in your account. |
| package_required | 403 | The tool needs a purchased package. |
| busy | 503 | The queue is full, try again shortly. |
| tool_unavailable | 503 | The tool is not available right now. |
| not_found | 404 | Unknown endpoint or job. |
| method_not_allowed | 405 | Wrong HTTP method. |
| internal_error | 500 | Error on our side. |
| invalid_idempotency_key | 400 | Idempotency-Key is empty, too long or has characters that are not printable ASCII. |
| idempotency_conflict | 422 | This Idempotency-Key was already used with a different request. |
| idempotency_in_progress | 409 | A request with this Idempotency-Key is still running. Wait a moment (Retry-After). |
| idempotency_unavailable | 503 | Idempotency-Key cannot be used right now. Try again later. |
| same_language | 400 | The text already is in the target language (translate tools). Send allow_same_language: true to translate anyway. |
Limits
- 60 requests per minute per key and 120 per account.
- Open jobs at the same time per account: Free 3, Starter 3, Standard 5, Pro 10, for the website and the API together.
- Input: Free 8 000 characters, paid packages 30 000. Lower limits per tool: compare 20 000, alt_text 1 000, translate 12 000 (compare: both texts together).
- API keys: Free 1, Starter 1, Standard 5, Pro 10.
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.
Svara på mejl utan att byta inkorg
Do4U driver ingen inkorg och sparar aldrig åtkomstuppgifter till din brevlåda. Två sätt att ändå få svarsutkast:
S1 – Mall för n8n eller Make
- Utlösare: ett nytt mejl i din brevlåda (IMAP-utlösare i n8n eller Make – åtkomstuppgifterna stannar där)
- POST /api/v1/jobs med verktyget support_reply, mejltexten och no_store: true
- Vänta några sekunder och hämta GET /api/v1/jobs/{id} tills statusen är done
- Skapa ett utkast i din brevlåda med texten från result.reply (Gmail- eller Outlook-modul)
I Make bygger du samma scenario av modulerna Email (watch emails), HTTP (make a request), Sleep och Gmail eller Outlook (create a draft).
Dev-tillägg och butiksplugin
Packa upp ZIP-filen och läs den medföljande guiden. Läs in webbläsartillägget lokalt; testa butiksplugin först i en testbutik. Din egen Dev-API-nyckel krävs. Shopware har för närvarande ett CLI.