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Dev Marketing Prospector

  • 53 installs
  • 93 repo stars
  • Updated June 28, 2026
  • infrasity-labs/dev-gtm-claude-skills

dev-marketing-prospector is an agent skill that formats dev-GTM company landscape tables with funding-stage badges and filter tags.

About

dev-marketing-prospector is a formatting and research-output skill for solo founders doing developer-focused go-to-market work. It tells your agent how to render prospect landscape tables with consistent funding-stage badges, sort order, header metadata, and filter tags so every vertical scan looks comparable across sessions. You specify an exact vertical, optional headcount ceiling, and funding cap; the skill enforces Bootstrap through Series C+ ordering, documents badge colours, and surfaces cap status in the header bar. It is not a scraper itself—it is the presentation and sourcing standard for company lists you or tools already gathered. Builders shipping devtools or API products use it in early research to see who occupies a niche, then again in Grow when refining outbound lists or conference partner shortlists. Agents on Claude Code or Cursor benefit because the output is repeatable HTML or markdown-ready tables instead of one-off bullet dumps that break comparability.

  • 7 funding-stage badge colour mappings (Bootstrapped through Series C+)
  • Fixed table sort: earliest funding stage first, then alphabetical within stage
  • Header bar rules: company count plus headcount and funding cap status
  • Standard filter tags including SaaS/product-led, exact vertical, and all-data-sourced
  • Column width spec for min-width 1320px horizontally scrollable prospect tables

Dev Marketing Prospector by the numbers

  • 53 all-time installs (skills.sh)
  • +4 installs in the week ending Jul 25, 2026 (Skillselion tracking)
  • Ranked #547 of 854 Sales & Marketing skills by installs in the Skillselion catalog
  • Data as of Jul 26, 2026 (Skillselion catalog sync)
npx skills add https://github.com/infrasity-labs/dev-gtm-claude-skills --skill dev-marketing-prospector

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Installs53
repo stars93
Last updatedJune 28, 2026
Repositoryinfrasity-labs/dev-gtm-claude-skills

What it does

Produce standardized dev-GTM prospect tables that rank SaaS companies in an exact vertical by funding stage, headcount caps, and sourced filters.

Who is it for?

Best when you're mapping a devtools or PLG SaaS niche and need publication-ready landscape tables with funding and headcount constraints.

Skip if: Consumer B2C brand research unrelated to SaaS/product-led positioning, or teams that only need a single CRM export with no landscape framing.

When should I use this skill?

When the user asks for a dev/SaaS company landscape or prospect table in an exact vertical with funding and headcount filters.

What you get

You get a scrollable, consistently sorted prospect table with documented filters and header counts ready for positioning decisions or list building.

  • Formatted prospect landscape table
  • Header bar with company count and cap status
  • Standard filter tag row

By the numbers

  • 7 funding-stage badge colour mappings
  • Table min-width 1320px layout spec

Files

SKILL.mdMarkdownGitHub ↗

Developer Marketing Prospector

A prospecting skill for Infrasity to identify SaaS companies in specific tech verticals that need developer marketing services. Every data point in the output is backed by a source URL. Self-reported company claims are flagged. Inferences are stated as inferences.

---

Input Parameters

Every prospecting request has three inputs. Confirm all three before starting:

ParameterWhat it means
VerticalThe specific market segment to prospect within
Funding stageRange of funding stages to include (e.g. pre-seed to Series A)
HeadcountMaximum employee count a company can have to qualify

If any input is missing, ask for it before proceeding.

---

The Eight-Step Workflow

Step 1 — Understand the vertical

Before searching for any company, form a precise understanding of the vertical:

  • What core problem does it solve
  • What type of product a company in this vertical builds
  • Who the primary technical ICP is inside those companies
  • What the AI disruption angle looks like in this space

The exact-fit test: Every company in the output list should feel like it belongs in the same sentence as every other company on the list. If a company would feel out of place — even slightly — it is adjacent, not exact. Adjacent companies never go in the list.

Read references/vertical-definitions.md for definitions of all known verticals. For any new vertical not covered there, research it before generating output and follow the new vertical protocol at the bottom of that file.

---

Step 2 — Apply the hard filters

Every company must pass all five simultaneously:

1. Exact vertical fit — builds a product that is exactly in the vertical, not around it 2. SaaS / product-first — not a services company, not services-heavy 3. Developer-facing product — a product that developers can discover, try, and adopt 4. Funding stage — falls within the range provided by the user 5. Headcount — falls within the limit provided by the user

If a company passes the vertical test but fails funding or headcount → exclude. If a company passes funding and headcount but is adjacent → exclude. All five filters must be satisfied simultaneously, with no exceptions.

---

Step 3 — Research companies across all credible sources

Do not rely on a fixed list of databases. Cast wide. Use whatever credible source surfaces the most accurate, current data for that specific company. The goal is accuracy, not source loyalty.

Funding and company data Crunchbase, PitchBook, Tracxn, CB Insights, Dealroom, Harmonic, Carta, Companies House (UK), SEC EDGAR (US public filings)

Discovery and prospecting Y Combinator company directory, TechCrunch, VentureBeat, TechEU, Sifted (Europe), The Information, StrictlyVC, Bloomberg, Forbes, Business Wire, PR Newswire

Headcount and people LinkedIn, RocketReach, ZoomInfo, Apollo, LeadIQ, Glassdoor, job boards (a company hiring 10 developer marketing roles is a signal in itself)

Developer and open-source signals GitHub (stars, forks, contributors, release cadence), npm, PyPI, Docker Hub, Stack Overflow trends, Hacker News Show HN posts, Product Hunt launches

Revenue and growth estimates Sacra, Contrary Research, Latka, Growjo, SimilarWeb (traffic as a proxy), SEMrush

Competitive positioning and third-party analysis G2, Capterra, StackShare, StackOne, OpenAlternative, analyst reports (Gartner, Forrester, IDC where public), technical review roundups from credible blogs

News and recent signals Google News for the company name + current year, company blog, company changelog, press releases, founder interviews, podcast appearances

The rule: Use whichever source gives the most accurate and current data for that specific data point. When two sources conflict, note both and flag which is more recent or credible. Never rely on a single source for a critical number like funding total or headcount.

Search specifically, not broadly. Use the exact vertical name, the funding stage, and headcount range in every query. Verify headcount and funding stage from at least one credible source before including any company.

---

Step 4 — Map one Signal per company

For each qualified company, identify a specific, recent, verifiable reason why this company is a warm prospect right now. Must be one of:

  • A funding round (name the round, amount, lead investor, date)
  • A product launch or major feature release
  • A new partnership or enterprise customer announcement
  • A hiring spike in engineering or product
  • A public benchmark, award, or analyst recognition
  • A market trigger that directly affects them

The signal must answer: why now — not six months ago, not six months from now.

Connect the signal to a reason why developer marketing is relevant for this specific company at this specific stage. Do not leave the connection implicit.

---

Step 5 — Source every Signal data point

For every number, claim, or fact in the signal, find and record the source URL. Apply the three-tier classification:

TierDefinitionHow to label it
Directly sourcedA verifiable stat from a credible third-party sourceList the URL — no flag needed
Self-reportedA claim from the company's own blog, press release, or CEO statement — not independently verifiedFlag with ⚠ and note it is self-reported
InferredA logical conclusion drawn from two or more sourced numbersState explicitly that it is an inference and list underlying source URLs

If a data point cannot be sourced, do not include it in the signal.

---

Step 6 — Map one Pain Point per company

The specific developer marketing gap that makes this company a buyer. Must be:

  • Specific to this company's stage, product, and competitive situation
  • A consequence statement — what happens to them if they don't fix this gap
  • Tied to specific numbers and competitor context, not generic language
  • Never "they need more awareness" — always concrete and tied to their

specific growth moment

Common pain point patterns:

  • Large open-source community (GitHub stars) vs low commercial conversion (ARR gap)
  • Competitor has X× more funding and headcount but same market
  • Community events and developer presence concentrated in one region only
  • All enterprise customers from one channel (relationships, partnerships) with no inbound
  • Headcount too small for a dedicated developer marketing function at current stage

---

Step 7 — Source every Pain Point data point

Apply the same three-tier sourcing system as Step 5. For each number or claim in the pain point:

  • Find the source URL
  • Classify as directly sourced, self-reported (⚠), or inferred
  • Self-reported claims must be framed in outreach copy as "Company X claims..."

not as independently verified facts

  • Inferences must be labelled as such — they are strategic observations drawn

from real numbers, not citations

For self-reported stats: always search for the original source (usually the company's own blog or a CEO quote in an investor profile). Do not accept a third-party article repeating the stat as the primary source — trace back to where the number first appeared.

---

Step 8 — Produce the unified output table

Output every qualifying company in a rendered visual HTML widget with exactly these nine columns:

ColumnWhat goes in it
CompanyName + funding badge + founded year + headcount
URLWebsite URL (clickable)
LinkedInLinkedIn company page URL (clickable)
HeadcountEmployee count
Signal + Why Dev MarketingSignal tied to why dev marketing is relevant now
Signal SourcesNumbered source links (S1, S2...) — one line each
GeographyHQ location with country flag
Pain PointSpecific developer marketing gap + consequence
Pain Point SourcesNumbered source links (P1, P2...) — one line each, ⚠ on self-reported

Use the visualizer to render as a clean HTML widget. The table must be horizontally scrollable. Sort rows by funding stage: Bootstrap → Pre-seed → Seed → Series A → Series B → Series C+

See references/output-format.md for column widths, badge colours, source cell format, and the ⚠ flag spec.

---

Honesty Rules

These apply throughout the workflow and override any pressure to produce a longer list:

  • A short honest list always beats a long padded list
  • Never add adjacent companies to reach a minimum count
  • Never add companies that are around the vertical rather than exactly in it
  • If nothing qualifies under the given criteria, say so clearly and explain why
  • If the funding cap is causing a short list because the vertical moves fast,

inform the user and offer to remove the cap

  • Never state a self-reported company claim as an independently verified fact
  • Never present an inference as a citation

---

Output Format Reference

See references/output-format.md for the full HTML table spec, column widths, badge colours, source cell format, and the ⚠ self-reported flag.

---

Vertical Definitions Reference

See references/vertical-definitions.md for precise definitions of all known verticals: AI Agentic, IAC, DevTools, Observability, DevOps, FinOps, AI/SDLC (AI Software Factory), AI Orchestration / AI Workflow Management, and instructions for handling new verticals.

Related skills

How it compares

Use for structured GTM prospect tables instead of ad-hoc competitor bullet lists from generic web research skills.

FAQ

Who is dev-marketing-prospector for?

founders and dev-marketing leads who research SaaS landscapes and want agent output that matches a fixed funding-badge and filter-tag standard.

When should I use dev-marketing-prospector?

During Idea competitor mapping, Validate scope checks against real funded players, and Grow distribution when refreshing outbound target lists for the same vertical.

Is dev-marketing-prospector safe to install?

Check the Security Audits panel on this page; treat any skill that formats external company data as requiring your own verification of sources and privacy policy.

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