Use whenever the user wants to find, shortlist, vet, or enrich US web development firms — building, refreshing, or rebuilding marketing sites, landing pages, ecommerce, WordPress/Webflow/Shopify, headless CMS, microsites, and web frontend work. Triggers on "find a web developer for a marketing landing page", "shortlist three Webflow agencies in California", "rebuild our ecommerce site on Shopify", or "pull contact info for these 8 web dev shop domains", even when described indirectly (redesign and rebuild our site, ship a microsite). Drives the ServiceGraph API (api.servicegraph.co) — a 100k+ US firm catalog filterable by industry, services, location, size, ratings. Defer to find-software-developer for custom backend/API/mobile/internal-tool work — anything beyond a website. Defer to find-marketing-agency when scope spans broader marketing beyond the build. Skip in-house web-engineer hires, "how do I build X" DIY questions, hosting/CMS-product comparisons, non-US firms, individual freelancers.
Use whenever the user wants to find, shortlist, vet, or enrich US web development firms — building, refreshing, or rebuilding marketing sites, landing pages, ecommerce, WordPress/Webflow/Shopify, headless CMS, microsites, and web frontend work. Triggers on "find a web developer for a marketing landing page", "shortlist three Webflow agencies in California", "rebuild our ecommerce site on Shopify", or "pull contact info for these 8 web dev shop domains", even when described indirectly (redesign and rebuild our site, ship a microsite). Drives the ServiceGraph API (api.servicegraph.co) — a 100k+ US firm catalog filterable by industry, services, location, size, ratings. Defer to find-software-developer for custom backend/API/mobile/internal-tool work — anything beyond a website. Defer to find-marketing-agency when scope spans broader marketing beyond the build. Skip in-house web-engineer hires, "how do I build X" DIY questions, hosting/CMS-product comparisons, non-US firms, individual freelancers.
Drive the ServiceGraph API (https://api.servicegraph.co) to find,
shortlist, and enrich US web development firms via the pro_services
dataset. The catalog tags ~14k firms with
service_provided:web-development under industry:it_services
(web-development is the second-largest service tag in the catalog).
Always pin both industry:it_services and
service_provided:web-development. Platforms (WordPress, Webflow,
Shopify, Next.js, etc.) and verticals (B2B, ecommerce,
agency-vs-studio) are NOT separate tags — they're keyword substring
matches on firm text.
Any HTTP client works (curl, fetch, requests). Examples below use curl.
Sibling skills — defer when scope is different
Custom backend / API / internal tools / mobile app / distributed systems → find-software-developer. The end-product is software beyond a standard website.
Broader marketing strategy and execution beyond the site build (paid media, content strategy, full digital agency engagement) → find-marketing-agency.
SEO-only work on an existing site → find-seo-agency. Web devs build sites; SEO agencies optimize them. If the user wants new pages built AND optimized, this skill is fine.
If unsure, this skill is correct for "build / rebuild / refresh a
website" tasks. The deferral kicks in when the deliverable is
non-website software or non-build marketing work.
Prerequisites
ServiceGraph access, either:
the ServiceGraph MCP server (https://mcp.servicegraph.co) loaded in
your harness — this plugin's .mcp.json wires it up; OAuth 2.1 + PKCE
keeps credentials in the harness sandbox — or
a ServiceGraph API key (vk_…, minted at
https://servicegraph.co/profile/api-keys) available as
SERVICEGRAPH_API_KEY in the environment or .env.local for the REST
path (setup steps under Auth below).
An HTTP client for the REST path — the examples use curl.
Instructions
The loop is free-first: discovery, validation, search, and brief reads cost
nothing; only unlock after the user confirms the spend.
Pick the call path — the ServiceGraph MCP tools if loaded, otherwise the
REST flow (MCP server and Auth sections below).
GET /v1/datasets/pro_services/fields?include_values=1 — confirm the
fields and values you plan to filter on exist.
Build the filter (Filter DSL below) and validate it with
GET /v1/datasets/pro_services/check — or draft it from plain English via
POST /v1/datasets/pro_services/translate-intent.
GET /v1/datasets/pro_services/search — present the free brief cards and
let the user pick.
Quote the unlock cost (10 credits per row, 30-day TTL) and get an explicit
go-ahead.
POST /v1/datasets/pro_services/unlocks with the chosen apexes; report the
revealed detail.
GET /v1/me/credits to report the remaining balance when asked.
MCP server (preferred for authed calls)
If your harness has the ServiceGraph MCP server loaded (tools
containing servicegraph), prefer those — OAuth 2.1 + PKCE keeps the
token in the harness sandbox. Otherwise use the REST flow below.
API surface (dataset id: pro_services)
Every endpoint requires the bearer (Authorization: Bearer vk_…).
No anonymous tier.
Endpoint
Cost
Use it for
GET /v1/datasets/pro_services/fields[?include_values=1]
free
Confirm web-development is in the service_provided value list.
GET /v1/datasets/pro_services/check?filter=…
free
Validate filter.
POST /v1/datasets/pro_services/translate-intent
free
{intent} → DSL filter + sanity count.
GET /v1/datasets/pro_services/search?filter=…&limit=
free
Brief firm cards + per-row unlock hint + total.
GET /v1/datasets/pro_services/:apex
free
One row brief; detail only if unlocked.
POST /v1/datasets/pro_services/unlocks
10 credits / firm
{apexes:[...]} ≤100; atomic; 30-day TTL on detail.
GET /v1/me/credits
free
Balance.
Cost model. Discovery / validation / search / brief reads are
free. Detail (url, phone, email, social, address, full platforms
map) costs 10 credits per firm and lasts 30 days.
Auth
vk_* API keys minted in the dashboard. Keep the token out of the
LLM context — never read .env* into your context; dispatch via
shell.
Try the call first through a shell wrapper that sources .env.local:
"Open https://servicegraph.co/profile/api-keys, create a
key, and add SERVICEGRAPH_API_KEY=vk_… to .env.local here
(or export it). Tell me when done. Please don't paste the key
into chat."
Retry after the user signals ready.
Filter DSL
GitHub-search-style.
filter := orExpr
orExpr := andExpr ("OR" andExpr)*
andExpr := notExpr (("AND")? notExpr)* # whitespace = implicit AND
notExpr := ("NOT" | "-") notExpr | atom
atom := "(" filter ")" | predicate
predicate:= IDENT op valueOrList | bareword
op := ":" | "=" | ">=" | "<=" | ">" | "<"
valueOrList := value ("," value)*
value := IDENT | NUMBER | tagAtEvidence
tagAtEvidence := IDENT "@" ("low"|"medium"|"high")
bareword := IDENT | NUMBER # → keyword:<bareword>
Four rules that bite: AND binds tighter than OR (use parens);
comma list = OR within one predicate; negation is -x or NOT x;
bareword = keyword search (quote multi-word phrases).
Firms are identified by their apex domain (focuslabllc.com, not
www.focuslabllc.com/work).
Output
All responses are JSON.
Search returns free brief firm cards — apex, name, location, and
rating signals — plus a per-row unlock hint and the match total. Briefs
never include url, phone_primary, email_primary, legal_name,
address_full, or the full platforms map.
Unlock (POST …/unlocks) returns each unlocked firm's detail block —
contact fields, address, socials, the platforms map — plus per-item
billing; detail stays readable for 30 days.
Errors arrive as a JSON envelope
{"error": {"code": "…", "message": "…"}} — see Errors below.
Examples
A. Marketing landing page (the baseline)
GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development&limit=10
# Present, get pick of 3. "Unlocking 3 = 30 credits, 30-day TTL."
POST /v1/datasets/pro_services/unlocks
{ "apexes": ["firm-a.com", "firm-b.com", "firm-c.com"] }
B. Webflow agency in a state
GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development+webflow+state:CA&limit=10
C. Shopify ecommerce rebuild
GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development+shopify+ecommerce&limit=10
For Shopify Plus, add plus as an additional bareword.
D. WordPress site refresh / maintenance
GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development+wordpress&limit=10
E. Headless CMS / Next.js
GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development+headless+next.js&limit=10
If sparse, drop next.js — headless alone captures the architectural pattern.
F. Indirect intent — "redesign and rebuild our site"
GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development&limit=10
Or use the translator:
POST /v1/datasets/pro_services/translate-intent
{ "intent": "agency to redesign and rebuild our outdated company site" }
If the user gave a constraint (location, platform, budget proxy via
pricing_model), add it.
G. Quality threshold + platform
GET /v1/datasets/pro_services/search?filter=industry:it_services+service_provided:web-development@high+rating>=4+shopify+plus&limit=10
H. BYO apex list — enrich domains
User pastes 8–20 web-dev shop domains:
GET /v1/datasets/pro_services/:apex per domain — free brief
(404 = not in catalog, no charge). A 404 often means the firm
isn't tagged with web-development specifically — it might be in
the catalog under a different tag.
User picks N to fully enrich. POST /unlocks = 10×N credits,
atomic, detail returned.
Re-runs within 30-day TTL are free.
Gotchas
Always pin both industry:it_services AND service_provided:web-development. Without the industry pin, web-development also appears on some marketing-agency rows; without the service pin, you'd return all IT-services firms.
Defer to find-software-developer for non-website software. Internal tools, custom CRMs, mobile apps (iOS/Android), backend/API, distributed systems — those are software-developer territory. The boundary: is the end-product a public website, or something else?
Defer to find-marketing-agency for full marketing engagements. "Build our site AND run our marketing" is broader than this skill — fire find-marketing-agency, which has web-design as a sub-service too.
Platforms (WordPress, Webflow, Shopify, Next.js) are NOT structured tags. Keyword them.
Frameworks (React, Vue, Astro, Gatsby) are NOT structured tags either. Keyword them.
CMS/hosting/builder product comparisons aren't procurement. "WordPress vs Webflow vs Squarespace" is a knowledge question.
Multi-word phrases must be split or quoted.headless cms parses as two AND'd keywords; "headless cms" is one phrase.
Catalog is US-only B2B. Refuse offshore asks ("Manila", "Karachi"), individual freelancers, and DIY/code-help asks ("debug this CSS").
Briefs DO include apex, name, location, ratings. They DON'T include url, phone_primary, email_primary, legal_name, address_full, full platforms — those require an unlock.
not_found / not_in_dataset 404 = not in pro_services. Skip; not charged.
Unlock is atomic. N apexes either all charge (up to 10×N credits) or none on 402.
