{"info":{"_postman_id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","name":"FirmSignalIQ — Company Website Intelligence API","description":"

Know the website. See the signals. Track observed changes.

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FirmSignalIQ turns a public company domain into structured website intelligence: company-page metadata, technology signatures, social links, and changes between saved observations. Add website context to CRM records, qualify accounts, or build research workflows without maintaining your own crawler.

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Live enrollment is open. Choose a paid plan at https://firmsignaliq.strigsapi.com/pricing and receive an API key after successful Stripe Checkout. Starter is $9/month for 1,000 successful lookups, Pro is $29/month for 5,000, and Business is $79/month for 20,000. No automatic overage charges; cancellation and refunds are handled under the published terms.

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Interactive API reference · Readiness · Plan details

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Start in three steps

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  1. Fork this collection into your own workspace and send Service Readiness. No key is required.

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    2. \n

  2. Store your evaluation key privately as apiKey in your own environment or Postman Vault. Never publish a key in shared values or examples. Requests inherit the X-API-Key header.

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    3. \n

  3. Send Company Profile, then Technology Signals or Website Signals. Set domain to a public website you want to inspect. Usage & Quota shows your remaining allowance.

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    4. \n
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What you receive

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CapabilityUseful forInterpretation
Website title and descriptionCRM context and researchA page title is not a verified legal company name
Technology signaturesIntegration research and account qualification11 supported technology families; visible HTML/header heuristics
Social profile linksWebsite-linked profile discoveryLinks found on the homepage; ownership is not independently verified
Careers and pricing linksWebsite segmentationA careers link does not prove active hiring
Saved observations and diffsTracking website changesHistory begins with successful uncached lookups; no scheduled monitoring
Sources and timestampsAuditable enrichmentHomepage and DNS evidence, observation times, and cache status
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Approved launch pricing

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PlanUSD/monthSuccessful lookups/monthRequests/minute
Evaluation$05010
Starter$91,00030
Pro$295,00060
Business$7920,000120
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One successful Company Profile, Technology Signals, or Website Signals response uses one lookup credit, including a cached response. Use Company Profile when you need all fields in one credit. Failed lookups consume no lookup credits. History, timeline, and usage reads consume no lookup credits; all authenticated requests count toward the per-minute request limit. Allowances reset on the first of each UTC calendar month, do not roll over, and stop at the limit. No automatic overage charges. Paid plans renew monthly on the subscription anniversary; usage resets by UTC calendar month. Cancel before renewal in the customer portal; cancellation takes effect at the paid period end.

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Freshness and history

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Results may be cached for up to one hour. Check cache.hit and freshness before using them. Cache hits retain the original observation timestamps and do not create new history. Changes and Timeline compare up to 100 observations from the past 90 days. insufficient_history means fewer than two saved observations; it is a normal result, not an error. Changes are detected between observations and do not establish the exact time a website changed. The service does not revisit sites automatically.

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Know the limits

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The API inspects public homepage HTML and DNS. It does not execute JavaScript, bypass login walls or bot protection, crawl whole sites, or supply employee counts, revenue, funding rounds, verified contacts or job listings. Missing fields and empty technology arrays are valid results. A missing signature does not prove a technology is absent. Confidence values are uncalibrated heuristic scores, not accuracy guarantees. HTML responses are limited to 2 MB and redirects to five hops; private-network destinations are rejected.

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Handle errors

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\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
StatusMeaningNext step
400Invalid domain or blocked network destinationUse a public hostname without credentials or a custom port
401Missing, invalid or inactive keyCheck your private X-API-Key value
422Invalid parameters or unsupported/oversized website responseCheck input and target HTML response
429Request rate, lookup quota or capacity limitCheck Usage and respect Retry-After when present
502 / 504Target DNS, connection, response or timeout problemRetry later with backoff; no lookup credit is charged
503Persistence temporarily unavailableCheck readiness and retry with backoff
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The included Company Profile example was captured from the deployed API on September 10, 2026. It intentionally shows a partial result for example.com so you can build reliable handling for missing fields.

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Support and account management

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Pricing and checkout status · Manage billing and API keys · Terms and refunds · Privacy

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Support: ray.finesse [at] outlook.com. Refund requests must be made within 48 hours of the charge, and require review and approval. Save the private recovery code supplied when you retrieve your key. Never include keys, recovery codes or card details in support messages or public examples.

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Built by Strigs API. Evaluate the response on your own target domains before committing to a production integration. Use the workspace comments for general feedback; keep credentials and sensitive customer data private.

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Confirm the API can reach its database. No key or lookup credit required. A 503 indicates the service is not ready.

\n","auth":{"type":"apikey","apikey":{"basicConfig":[{"key":"key","value":"X-API-Key"},{"key":"value","value":""}]},"isInherited":true,"source":{"_postman_id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","name":"FirmSignalIQ — Company Website Intelligence API","type":"collection"}},"urlObject":{"path":["ready"],"host":["https://firmsignaliq-staging.onrender.com"],"query":[],"variable":[]}},"response":[{"id":"e05fccaf-d460-4178-b2d2-1652ecb5ed16","name":"200 — database connected","originalRequest":{"auth":{"type":"noauth"},"method":"GET","header":[{"key":"Accept","value":"application/json"}],"url":"https://firmsignaliq-staging.onrender.com/ready","description":"Confirm the API can reach its database. No key or lookup credit required. A 503 indicates the service is not ready."},"status":"OK","code":200,"_postman_previewlanguage":"json","header":[{"key":"Content-Type","value":"application/json","enabled":true}],"cookie":[],"responseTime":null,"body":"{\n \"status\": \"ready\",\n \"persistence\": \"connected\"\n}"}],"_postman_id":"a713022e-6083-4a23-8735-8c295eac41c1"},{"name":"Liveness","event":[{"listen":"test","script":{"type":"text/javascript","exec":["pm.test(\"Response is JSON\", function () { pm.response.to.be.json; });","pm.test(\"Expected success\", function () { pm.response.to.have.status(200); });"],"id":"3359fe8f-6c3d-4742-9f1c-698da11302f6"}}],"id":"aa06e6a2-3e5a-4518-9504-6d7a89f6d178","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"GET","header":[{"key":"Accept","value":"application/json"}],"url":"https://firmsignaliq-staging.onrender.com/health","description":"

Basic process health and API version. Use Service Readiness to check the database too.

\n","auth":{"type":"apikey","apikey":{"basicConfig":[{"key":"key","value":"X-API-Key"},{"key":"value","value":""}]},"isInherited":true,"source":{"_postman_id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","name":"FirmSignalIQ — Company Website Intelligence API","type":"collection"}},"urlObject":{"path":["health"],"host":["https://firmsignaliq-staging.onrender.com"],"query":[],"variable":[]}},"response":[],"_postman_id":"aa06e6a2-3e5a-4518-9504-6d7a89f6d178"},{"name":"Plans & Limits","event":[{"listen":"test","script":{"type":"text/javascript","exec":["pm.test(\"Response is JSON\", function () { pm.response.to.be.json; });","pm.test(\"Expected success\", function () { pm.response.to.have.status(200); });"],"id":"6b53c002-59fb-4d65-a8f7-726c3cdc18c3"}}],"id":"26dfa2d9-155c-4a07-a835-7eab0b8837cc","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"GET","header":[{"key":"Accept","value":"application/json"}],"url":"https://firmsignaliq-staging.onrender.com/v1/plans","description":"

See planned launch pricing and quota rules. Paid enrollment is not enabled during this developer preview.

\n","auth":{"type":"apikey","apikey":{"basicConfig":[{"key":"key","value":"X-API-Key"},{"key":"value","value":""}]},"isInherited":true,"source":{"_postman_id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","name":"FirmSignalIQ — Company Website Intelligence API","type":"collection"}},"urlObject":{"path":["v1","plans"],"host":["https://firmsignaliq-staging.onrender.com"],"query":[],"variable":[]}},"response":[],"_postman_id":"26dfa2d9-155c-4a07-a835-7eab0b8837cc"},{"name":"Usage & Quota","event":[{"listen":"test","script":{"type":"text/javascript","exec":["pm.test(\"Response is JSON\", function () { pm.response.to.be.json; });","pm.test(\"Expected success\", function () { pm.response.to.have.status(200); });"],"id":"8a5a4802-9573-44bc-aa84-5fc66bfdfbc9"}}],"id":"7cf159f4-f4c8-4023-82ad-f5dbd52ebfec","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"GET","header":[{"key":"Accept","value":"application/json"}],"url":"https://firmsignaliq-staging.onrender.com/v1/usage","description":"

Read your current UTC calendar-month usage, remaining credits and plan. This request uses no lookup credit.

\n","auth":{"type":"apikey","apikey":{"basicConfig":[{"key":"key","value":"X-API-Key"},{"key":"value","value":""}]},"isInherited":true,"source":{"_postman_id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","name":"FirmSignalIQ — Company Website Intelligence API","type":"collection"}},"urlObject":{"path":["v1","usage"],"host":["https://firmsignaliq-staging.onrender.com"],"query":[],"variable":[]}},"response":[],"_postman_id":"7cf159f4-f4c8-4023-82ad-f5dbd52ebfec"},{"name":"Company Profile","event":[{"listen":"test","script":{"type":"text/javascript","exec":["pm.test(\"Response is JSON\", function () { pm.response.to.be.json; });","pm.test(\"Expected success\", function () { pm.response.to.have.status(200); });"],"id":"ce35d60a-c7ba-4241-a844-f8650963c5b4"}}],"id":"2c954dc8-4313-4bb2-9fd8-08bcff74802d","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"GET","header":[{"key":"Accept","value":"application/json"}],"url":"https://firmsignaliq-staging.onrender.com/v1/company?domain=example.com","description":"

Get all website metadata, technologies, social links, evidence and freshness in one response. One credit per successful response, including cache hits. Missing fields are valid; inspect data_quality.partial.

\n","auth":{"type":"apikey","apikey":{"basicConfig":[{"key":"key","value":"X-API-Key"},{"key":"value","value":""}]},"isInherited":true,"source":{"_postman_id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","name":"FirmSignalIQ — Company Website Intelligence API","type":"collection"}},"urlObject":{"path":["v1","company"],"host":["https://firmsignaliq-staging.onrender.com"],"query":[{"description":{"content":"

Public company hostname; no credentials or custom ports.

\n","type":"text/plain"},"key":"domain","value":"example.com"}],"variable":[]}},"response":[{"id":"869af416-b08b-47c7-ae85-7a3f97ebf8c9","name":"200 — real partial profile (example.com)","originalRequest":{"method":"GET","header":[{"key":"Accept","value":"application/json"}],"url":{"raw":"https://firmsignaliq-staging.onrender.com/v1/company?domain=example.com","host":["https://firmsignaliq-staging.onrender.com"],"path":["v1","company"],"query":[{"key":"domain","value":"example.com","description":"Public company hostname; no credentials or custom ports."}]},"description":"Get all website metadata, technologies, social links, evidence and freshness in one response. One credit per successful response, including cache hits. Missing fields are valid; inspect data_quality.partial."},"status":"OK","code":200,"_postman_previewlanguage":"json","header":[{"key":"Content-Type","value":"application/json","enabled":true}],"cookie":[],"responseTime":null,"body":"{\n \"company\": {\n \"name\": \"Example Domain\",\n \"name_basis\": \"website page title, not verified legal name\",\n \"domain\": \"example.com\",\n \"description\": null,\n \"website\": \"https://example.com/\"\n },\n \"website\": {\n \"http_version\": \"HTTP/1.1\",\n \"server\": \"cloudflare\",\n \"content_type\": \"text/html\",\n \"careers_signal\": false,\n \"pricing_signal\": false\n },\n \"network\": {\n \"resolved_ips\": [\n \"104.20.23.154\",\n \"172.66.147.243\",\n \"2606:4700:10::6814:179a\",\n \"2606:4700:10::ac42:93f3\"\n ]\n },\n \"social\": {},\n \"technologies\": [\n {\n \"name\": \"Cloudflare\",\n \"confidence\": 0.92,\n \"confidence_basis\": \"uncalibrated signature heuristic\",\n \"last_verified\": \"2026-09-10T18:23:49.488364+00:00\",\n \"evidence_count\": 2,\n \"matched_signatures\": [\n \"server:cloudflare\",\n \"cf-ray:\"\n ]\n }\n ],\n \"freshness\": {\n \"website\": \"2026-09-10T18:23:49.320260+00:00\",\n \"dns\": \"2026-09-10T18:23:49.320260+00:00\",\n \"technology\": \"2026-09-10T18:23:49.320260+00:00\"\n },\n \"data_quality\": {\n \"sources_observed\": 2,\n \"partial\": true,\n \"scope\": \"homepage HTML and DNS only\",\n \"confidence_basis\": \"heuristics are not calibrated probabilities\"\n },\n \"evidence\": [\n {\n \"source_type\": \"company_website\",\n \"observed_at\": \"2026-09-10T18:23:49.320260+00:00\",\n \"url\": \"https://example.com/\",\n \"fields\": [\n \"company.name\",\n \"company.description\",\n \"website\",\n \"social\",\n \"technologies\"\n ]\n },\n {\n \"source_type\": \"dns_resolution\",\n \"observed_at\": \"2026-09-10T18:23:49.320260+00:00\",\n \"records\": 4,\n \"fields\": [\n \"network.resolved_ips\"\n ]\n }\n ],\n \"cache\": {\n \"hit\": false,\n \"ttl_seconds\": 3600\n },\n \"usage\": {\n \"lookup_credits\": 1\n }\n}"}],"_postman_id":"2c954dc8-4313-4bb2-9fd8-08bcff74802d"},{"name":"Technology Signals","event":[{"listen":"test","script":{"type":"text/javascript","exec":["pm.test(\"Response is JSON\", function () { pm.response.to.be.json; });","pm.test(\"Expected success\", function () { pm.response.to.have.status(200); });"],"id":"d86c9719-2a08-4073-8da8-33b0d796b742"}}],"id":"fc1cebd6-187a-49f4-a7ff-f116d4940edf","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"GET","header":[{"key":"Accept","value":"application/json"}],"url":"https://firmsignaliq-staging.onrender.com/v1/company/technology?domain=example.com","description":"

Return detected technology signatures with matched_signatures and observation timestamps. One credit per successful response. Scores are heuristic; empty results do not prove that no technology is used.

\n","auth":{"type":"apikey","apikey":{"basicConfig":[{"key":"key","value":"X-API-Key"},{"key":"value","value":""}]},"isInherited":true,"source":{"_postman_id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","name":"FirmSignalIQ — Company Website Intelligence API","type":"collection"}},"urlObject":{"path":["v1","company","technology"],"host":["https://firmsignaliq-staging.onrender.com"],"query":[{"description":{"content":"

Public company hostname; no credentials or custom ports.

\n","type":"text/plain"},"key":"domain","value":"example.com"}],"variable":[]}},"response":[],"_postman_id":"fc1cebd6-187a-49f4-a7ff-f116d4940edf"},{"name":"Website Signals","event":[{"listen":"test","script":{"type":"text/javascript","exec":["pm.test(\"Response is JSON\", function () { pm.response.to.be.json; });","pm.test(\"Expected success\", function () { pm.response.to.have.status(200); });"],"id":"9588257f-c751-4998-9db8-f805b8aa956a"}}],"id":"edb097d9-1bb8-44fc-b782-069ac9a396a0","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"GET","header":[{"key":"Accept","value":"application/json"}],"url":"https://firmsignaliq-staging.onrender.com/v1/company/signals?domain=example.com","description":"

Inspect careers/pricing links and detected technologies. A careers link is not verified hiring activity. One credit per successful response.

\n","auth":{"type":"apikey","apikey":{"basicConfig":[{"key":"key","value":"X-API-Key"},{"key":"value","value":""}]},"isInherited":true,"source":{"_postman_id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","name":"FirmSignalIQ — Company Website Intelligence API","type":"collection"}},"urlObject":{"path":["v1","company","signals"],"host":["https://firmsignaliq-staging.onrender.com"],"query":[{"description":{"content":"

Public company hostname; no credentials or custom ports.

\n","type":"text/plain"},"key":"domain","value":"example.com"}],"variable":[]}},"response":[],"_postman_id":"edb097d9-1bb8-44fc-b782-069ac9a396a0"},{"name":"Observed Changes","event":[{"listen":"test","script":{"type":"text/javascript","exec":["pm.test(\"Response is JSON\", function () { pm.response.to.be.json; });","pm.test(\"Expected success\", function () { pm.response.to.have.status(200); });"],"id":"db531a23-c9c5-40c9-9bc7-4c338545d1a6"}}],"id":"dd94bba5-4a78-4f1e-8fb5-5f91acdabff4","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"GET","header":[{"key":"Accept","value":"application/json"}],"url":"https://firmsignaliq-staging.onrender.com/v1/company/changes?domain=example.com&limit=50","description":"

Compare saved observations from the past 90 days. Does not fetch the site or consume a lookup credit. A first lookup normally produces insufficient_history. Obtain another uncached observation after the one-hour cache window to create comparison history.

\n","auth":{"type":"apikey","apikey":{"basicConfig":[{"key":"key","value":"X-API-Key"},{"key":"value","value":""}]},"isInherited":true,"source":{"_postman_id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","name":"FirmSignalIQ — Company Website Intelligence API","type":"collection"}},"urlObject":{"path":["v1","company","changes"],"host":["https://firmsignaliq-staging.onrender.com"],"query":[{"description":{"content":"

Public company hostname; no credentials or custom ports.

\n","type":"text/plain"},"key":"domain","value":"example.com"},{"description":{"content":"

Number of observations to compare, 2–100.

\n","type":"text/plain"},"key":"limit","value":"50"}],"variable":[]}},"response":[],"_postman_id":"dd94bba5-4a78-4f1e-8fb5-5f91acdabff4"},{"name":"Change Timeline","event":[{"listen":"test","script":{"type":"text/javascript","exec":["pm.test(\"Response is JSON\", function () { pm.response.to.be.json; });","pm.test(\"Expected success\", function () { pm.response.to.have.status(200); });"],"id":"425694c1-1ed5-4cdc-9cfe-4d94c0ac9f3b"}}],"id":"cc9af2ba-fe59-48e9-9acd-60a5536363aa","protocolProfileBehavior":{"disableBodyPruning":true},"request":{"method":"GET","header":[{"key":"Accept","value":"application/json"}],"url":"https://firmsignaliq-staging.onrender.com/v1/company/timeline?domain=example.com&limit=50","description":"

Read observed changes in descending time order. No lookup credit. This is lookup-driven observation history, not continuous monitoring or an event feed.

\n","auth":{"type":"apikey","apikey":{"basicConfig":[{"key":"key","value":"X-API-Key"},{"key":"value","value":""}]},"isInherited":true,"source":{"_postman_id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","id":"7d661fc9-a0da-4e73-b1fc-c16cf1ced776","name":"FirmSignalIQ — Company Website Intelligence API","type":"collection"}},"urlObject":{"path":["v1","company","timeline"],"host":["https://firmsignaliq-staging.onrender.com"],"query":[{"description":{"content":"

Public company hostname; no credentials or custom ports.

\n","type":"text/plain"},"key":"domain","value":"example.com"},{"description":{"content":"

Number of observations to compare, 2–100.

\n","type":"text/plain"},"key":"limit","value":"50"}],"variable":[]}},"response":[],"_postman_id":"cc9af2ba-fe59-48e9-9acd-60a5536363aa"}],"auth":{"type":"apikey","apikey":{"basicConfig":[{"key":"key","value":"X-API-Key"},{"key":"value","value":""}]}},"event":[{"listen":"prerequest","script":{"id":"02a096da-6e42-490f-ad35-c92b879f3d8b","type":"text/javascript","packages":{},"requests":{},"exec":[""]}},{"listen":"test","script":{"id":"4a152558-ebaf-4457-97cb-850685a18a0d","type":"text/javascript","packages":{},"requests":{},"exec":[""]}}],"variable":[{"key":"baseUrl","value":"https://firmsignaliq-staging.onrender.com"},{"key":"domain","value":"example.com"},{"key":"apiKey","value":"","description":"Set privately in your own environment or Vault. Never share this value."}]}